ML17010A374

Edwin I. Hatch Nuclear Plant, Unit Nos. 1 and 2 - FSAR Part 9 -Redacted

ML17010A374
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Site:	Hatch
Issue date:	01/10/2017
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Orenak M D, NRR-DORL 415-3229
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HNP-FHA i REV 28 11/10 EDWIN I. HATCH NUCLEAR PLANT FIRE HAZARDS ANALYSIS AND FIRE PROTECTIONS PROGRAM TABLE OF CONTENTS Section Page

1.0 INTRODUCTION

1-1 1.1 Purpose 1-1 1.2 Scope 1-1 2.0 DEFINITIONS 2-1 3.0 METHODOLOGY 3-1 3.1 Bases for the Fire Hazard Analysis 3-1 3.2 Design Input Summary/As-Built Verification 3-1 3.3 Fire Hazard Analysis Methodology and Format 3-2 3.4 Establishment of Fire Areas/Zones 3-4 3.5 Design Basis Fire 3-5 3.6 Summary of the Safe Shutdown Evaluation 3-7 3.7 Flooding/Inadvertent Actuation 3-8 4.0 FIRE PROTECTION FEATURES 4.1 Defense-In-Depth 4-1 4.2 Separation Criteria 4-1 4.3 Fire Barriers 4-2 4.4 Combustible and Ignition Source Control 4-3 4.5 Material Control 4-3 4.6 Detection and Annunciation Systems 4-3 4.7 Fire Protection Water Supplies 4-5 4.8 Fixed Water Suppression Systems 4-6 4.9 Standpipes and Hose Stations 4-7 4.10 Portable Extinguishers 4-7 4.11 Gaseous Suppression Systems 4-7 4.12 Emergency Lighting 4-8 4.13 Ventilation 4-8 5.0 FIRE AREA DATA SHEET EXPLANATORY NOTES 5-1 5.1 Fire Area/Zone 5-1 5.2 Description 5-1 5.3 Drawing Number(s) 5-2 5.4 Area 5-2 5.5 Combustibles 5-2 5.6 Design Basis Fire 5-2 5.7 Fire Protection (Available) 5-3 5.8 Fire Resistance (Construction) 5-4

HNP-FHA ii REV 28 11/10 TABLE OF CONTENTS (CONTINUED) Section Page

6.0 REFERENCES

6-1 7.0 FIRE SUPPRESSION AND DETETION SYSTEM SUMMARY 7-1 8.0 FIRE HAZARD ANALYSIS FIGURES 8-1 9.0 APPENDICES 9.1 Appendix A Fire Protection Program Plan 9.2 Appendix B Fire Protection Equipment Operating and Surveillance Requirements 9.3 Appendix C Exemption Request Submittals and Safety Evaluation Reports (Moved to Historical Volume 4) 9.4 Appendix D Appendix A Compliance Matrix 9.5 Appendix E Safe Shutdown System Methodology 9.6 Appendix F Detection Scope Document (Moved to Historical Volume 4) 9.7 Appendix G Response to Generic Letter 81-12 (Moved to Historical Volume 4) 9.8 Appendix H NFPA Deviation Summary 9.9 Appendix I Fire Barrier Penetration Report 9.10 Appendix J Fire Resistance of Concrete Block at HNP (Moved to Historical Volume 4) 9.11 Appendix K Combustibility of Askarels (Moved to Historical Volume 4) 9.12 Appendix L Miscellaneous Supporting Calculations (Moved to Historical Volume 4) 9.13 Appendix M Fire Detection Systems Phased Implementation Database (Moved to Historical Volume 4) 10.0 COMMON AREAS FIRE HAZARD ANALYSIS 11.0 UNIT 1 AREAS FIRE HAZARD ANALYSIS 11.1 Areas 10XX, Unit 1 Control Building 11.2 Areas 11XX, Unit 1 Turbine Building 11.3 Areas 12XX, Unit 1 Reactor Building 11.4 Areas 13XX, Unit 1 Radwaste and Radwaste Addition Buildings 11.5 Areas 14XX, Unit 1 Diesel Generator Building 11.6 Areas 16XX, Unit 1 Yard 11.7 Areas 18XX, Unit 1 Miscellaneous 12.0 UNIT 2 AREAS FIRE HAZARD ANALYSIS 12.1 Areas 20XX, Unit 2 Control Building 12.2 Areas 21XX, Unit 2 Turbine Building 12.3 Areas 22XX, Unit 2 Reactor Building 12.4 Areas 23XX, Unit 2 Radwaste Building

HNP-FHA iii REV 28 11/10 TABLE OF CONTENTS (CONTINUED)

12.5 Areas 24XX, Unit 2 Diesel Generator Building 12.6 Areas 26XX, Unit 2 Yard 12.7 Areas 28XX, Unit 2 Miscellaneous

13.0 HISTORICAL MATERIAL

13.1 Exemption Request Submittals and Safety Evaluation Reports 13.2 Detection Scope Document 13.3 Response to Generic Letter 81-12 13.4 Fire Resistance of Concrete Block at HNP 13.5 Combustibility of Askarels 13.6 Miscellaneous Supporting Calculations 13.7 Fire Detection Systems Phased Implementation Database HNP-FHA-1 1-1 REV 28 11/10

1.0 INTRODUCTION

In October 1976, Georgia Power Corporation (GPC) submitted a report entitled "Evaluation of the Hatch Nuclear Plant Fire Protection Program", documenting its evaluation of the fire protection provisions at E. I. Hatch Nuclear Plant (HNP). This report described the Fire Protection Program, evaluated the effects of postulated fires on nuclear plant safety (Fire Hazard Analysis), and provided a comparison with the guidelines contained in Appendix A to the Nuclear Regulatory Commission's (NRC) Branch Technical Position APCSB 9.5-1. In October 1978, the NRC issued a Safety Evaluation Report judging the compliance of HNP to the guidelines of Appendix A as acceptable, pending implementation of certain modifications.

In October 1980, the NRC approved a new rule concerning fire protection at nuclear power plants. This rule and its Appendix R, "Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1, 1979," required GPC to re-evaluate the fire protection provisions at HNP, particularly with respect to the capability to achieve and maintain safe shutdown in the event of a fire. As a result of this re-evaluation, additional modifications to the design and operation of HNP have been implemented.

1.1 Purpose This report represents an update of the 1976 Fire Hazard Analysis and incorporated the results of the safe shutdown assessment documented in calculations performed by the architect/engineers for GPC. The objectives of this updated Fire Hazard Analysis are:

a. To define fire areas and fire zones consistent with the guidelines of both Appendix A and Appendix R;

b. To document and quantify all combustibles located in each fire area and zone and to calculate the design bases fire (DBF) for each fire area and zone;

c. To summarize, by fire area, the location of circuits and components required to safely shut down the reactor;

d. To describe the capabilities of the fire protection features for all areas, including those to protect at least one path of safe shutdown equipment in each fire area.

This updated Fire Hazard Analysis was performed by individuals knowledgable in both nuclear plant systems and fire protection and was reviewed and approved by a fire protection engineer who is qualified for member grade in the Society of Fire Protection Engineers.

1.2 Scope This fire hazard analysis included all plant areas which either:

a. Contain safety-related and/or safe shutdown equipment;

b. Contain neither safety-related nor safe shutdown equipment but represent an exposure hazard to any such area; or HNP-FHA-1 1-2 REV 28 11/10 c. Have the potential for a significant release of radioactive material.

In addition, other plant areas have been included that present a significant hazard or investment. These areas, while not affected by regulatory requirements, represent a significant investment by GPC and it is good fire protection practice to include them in this updated Fire Hazard Analysis.

This report also readdresses those positions of BTP 9.5-1 associated with plant design features.

Those positions in the BTP associated with administration, organization, training, and quality assurance are readdressed in the Fire Protection Plan provided as Appendix A of this report.

HNP-FHA-2 2-1 REV 28 11/10 2.0 DEFINITIONS Approved - Tested and accepted for a specific purpose or application by a nationally recognized testing laboratory.

Authority Having Jurisdiction - An organization, office, or individual responsible for enforcing the requirements of a code or standard or for approving equipment, materials, an installation, or a procedure (e.g., Nuclear Electric Insurance Limited (NEIL)).

Automatic - Self-acting, operating by its own mechanism when actuated by some impersonal influence, as for example, a change in voltage, pressure, temperature or mechanical configuration.

Combustible Material - Any material that does not meet the definition of noncombustible.

Design Basis Fire - A design basis fire is a theoretical event that postulates the complete combustion of all the combustibles (i.e., flashover is assumed) in a compartment and considers the total heat released under these conditions. An actual fire always involves varying amounts of incomplete combustion and, therefore, yields a lower total heat release to the compartment; thus, an actual fire is less severe than a design basis fire.

Exposure Fire - An exposure fire is a fire in a given area that involves either in situ or transient combustibles and is external to any structures, systems, or components located in or adjacent to that same area. The effects of such a fire could adversely affect those structures, systems, or components important to safety. Thus, a fire involving one path of safe shutdown equipment may constitute an exposure fire for the redundant path located in the same area, and a fire involving combustibles other than either redundant path may constitute an exposure fire to both redundant paths located in the same area.

Fire Area - An area sufficiently bounded to withstand the hazards associated with the area and, as necessary, to protect important equipment within the area from a fire outside the area.

Fire Barrier - Those components of construction including walls, floors, enclosures, roofs penetration seals, fire-rated doors, and ventilation dampers that are rated by approving laboratories in hours of resistance to fire to prevent the propagation of fire. Structural steel forming a part of these barriers is provided with protective coatings to preclude fire damage.

Fire barriers may also consist of a combination of existing architectural features and suppression systems as detailed in section 3.4 of this report.

Fire Detectors - A device designed to automatically detect the presence of fire and initiate an alarm.

a. Heat (Thermal) Detector - A device which detects abnormally high temperature or rate of temperature rise.

b. Smoke Detector - A device which detects the visible or invisible products of combustion.

HNP-FHA-2 2-2 REV 28 11/10 c. Line-Type Thermal Detector - A device in which detection is continuous along a path, e.g., fixed-temperature, heat-sensitive cable, and rate-of-rise pneumatic tubing detectors. Fire Rating - The endurance period of a fire barrier or structure to a standard fire exposure elapsing before the first critical point in behavior is observed. (Refer to NFPA Standard No. 251 or ASTM E-119).

Fire Suppression - The capability for control and extinguishment of fires. Manual fire suppression activities are the application of hose streams or portable extinguishers to control and extinguish a fire. Automatic fire suppression is the application of fixed systems such as automatic sprinklers, halon, carbon dioxide, or fixed water spray, installed in specific areas to control and extinguish fires.

Fire Zone - That portion of a fire area that is best analyzed separately as a zone within a fire area due to its unique combustible loading or fire characteristics. A fire zone is a subset of a fire area.

Labeled - Equipment or materials to which has been attached a label, symbol, or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner.

Listed - Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a specified purpose.

Noncombustible Material a. A material in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat.

b. Material having a structural base of noncombustible material as defined in a., above, with a surfacing not over 1/8-inch thick that has a flame spread rating not higher than 50 when measured using ASTM E-84 Test "Surface Burning Characteristics of Building Materials."

Safety Related - Fire areas and zones are defined as safety related if they contain any safety equipment as defined in Table 1 of reference 1.

Sprinkler System - A system of piping and components from the first supply valve to the point where water discharges from the system to the protected area. The system sometimes includes a controlling and/or a sectionalizing valve which is activated by a fire detection system (thermal or smoke) and a device for actuating an alarm when the system is in operation.

HNP-FHA-2 2-3 REV 28 11/10 a. Wet Pipe - A system employing automatic closed head (fusible link operated) sprinklers attached to a piping system containing water and connected to a water supply so that water discharges immediately from sprinklers opened by a fire.

b. Dry Pipe - A system employing automatic closed head sprinklers attached to a piping system containing air under pressure, the release of which from the opening of a sprinkler permits the water to open a valve known as a dry pipe valve. The water then flows into the piping system and out the opened sprinklers as the air pressure drops.

c. Pre Action System - A system employing automatic closed head sprinklers attached to a piping system containing air that may or may not be under pressure, with a fire detection system installed in the same areas as the sprinklers. Actuation of the fire detection system opens a valve which permits water to flow into the piping system and discharges from all open sprinklers simultaneously.

d. Deluge - A system employing open head sprinklers attached to a piping system connected to a water supply through a valve which is opened upon actuation of a fire detection system in the same area as the sprinklers and/or nozzles. When this valve opens, water flows into the piping system and discharges from all open sprinklers simultaneously.

e. Water Spray System - A network of piping similar to a sprinkler system except that it utilizes directional spray nozzles. NFPA Standard No. 15, "Water Spray Fixed System," provides guidance on these systems.

f. Standpipe and Hose System - A fixed piping system connected to a water supply to provide effective hose streams in the shortest possible time to specific areas inside the building.

Fire-rated Class A, B, C - Fire-rated rating class applied to fire doors and dampers as follows:

Class Fire Rating A 3 h B 1-1/2 h C 3/4 h

HNP-FHA-3 3-1 REV 33 12/14 3.0 METHODOLOGY The bases and methodology used in producing this Fire Hazard Analysis are as follows.

3.1 Bases for the Fire Hazard Analysis This Fire Hazard Analysis is performed to:

a. Consider potential in-situ and transient fire hazards.

b. Determine the consequences of fire in any location of the plant on the ability to safely shut down the reactor or on the ability to minimize and control the release of radioactivity to the environment.

c. Specify measures for fire prevention, fire detection, fire suppression, and fire containment and alternative shutdown capability as required for each fire area containing structures, systems, and components important to safety in accordance with Nuclear Regulatory Commission (NRC) guidelines and regulations.

d. Assess the fire protection measures throughout the E. I. Hatch Nuclear Plant (HNP).

3.2 Design Input Summary/As-Built Verification The E. I. Hatch Nuclear Plant Fire Hazard Analysis drawings (section 8.0) provide the following information:

• Suppression system coverage.

• Detection system coverage.

• Fire area boundary definitions.

• Fire barrier ratings.

• Fire door ratings.

• Portable extinguisher coverage.

• Hose station coverage.

The square footage of the fire areas was determined using various Unit 1 general arrangement and equipment location drawings and Unit 2 general arrangement and architectural drawings as referenced in section 5.3 of this report.

The summary information regarding the safe shutdown circuits and components located in each area was extracted from the Safe Shutdown Analysis Report. The methodology used for this extraction is noted in section 3.6 of this report.

The inventory of combustible materials in each fire area and zone, with the exception of cable insulation, was determined via a detailed plant walkdown conducted in June and July of 1985.

HNP-FHA-3 3-2 REV 33 12/14 The cable combustible inventory was calculated as is stated in section 3.5 and in appendix L of this report. Any additional information not specified here was determined during the previously noted walkdown.

3.3 Fire Hazard Analysis Methodology and Format The extent to which this updated Fire Hazard Analysis meets the above bases and the methodology and format employed are discussed below:

3.3.1 Fire Hazard Analysis Methodology This updated Fire Hazard Analysis identifies and quantifies the combustible contents of, as a minimum, all structures housing safety-related equipment or presenting an exposure hazard to safety-related equipment. Conservative values of heat release, assuming total combustion of all fixed combustibles in each fire area and zone, are utilized to maximize the effect of potential fire hazards. Cable insulation, which represents a major hazard in nuclear power plants, is evaluated assuming cable tray sections are filled to the maximum design limit or the actual fill, whichever is greater.

With regards to transient combustibles, it should be noted that HNP utilizes a permit system for control of transient combustibles. All movement of transients through safety-related structures are reviewed and approved by site fire protection personnel. Since the evaluation of the acceptability of transient combustibles is made at the time of the permit, transient combustibles have not been specifically included in this updated Fire Hazard Analysis except as follows:

• Combustibles which are not "fixed" but are, nonetheless, considered permanent (e.g., dress out areas, supply storage, etc.) were included.

• Known transient combustibles in the yard area (e.g., diesel fuel transport) were evaluated for their effects on safety-related equipment in the yard.

This updated Fire Hazard Analysis summarizes the analyses performed by the architect/engineers to demonstrate compliance to Sections III.G of Appendix R. For each fire area, this summary includes the identification of the path of equipment to be utilized to achieve safe shutdown, diesel generators required, number of safe shutdown components (e.g., pumps, valves, etc.) located in the area, and safe shutdown components of the path used for safe shutdown for which electrical cabling passes through the area. Circuit protection or special operator actions required to safely shut down the reactor are also identified. The release of radioactivity resulting from a fire may be due to the airborne release of surface contamination of combustible materials, the failure of waste processing systems, or the initiation of a plant transient involving the rupture of a fission product barrier. Such a release is not specifically addressed in each fire area and zone analysis since:

• All buildings containing contaminated materials are of substantial construction and surface contamination released due to a fire is expected to be insignificant and remain local to the structure.

HNP-FHA-3 3-3 REV 33 12/14

• The failure of waste processing systems is bounded by the analysis in chapter 15 of the FSAR.

• The provisions of Appendix R ensure the ability to achieve safe shutdown with no fuel failures or failures of high-low pressure boundaries. Inasmuch as the fire prevention, fire detection, fire suppression, and fire containment features at HNP have been previously approved by the NRC (SER dated October 1978), this updated Fire Hazard Analysis has focused on the subsequent changes to the plant approved features and on the evaluation of new systems to meet GPC commitments to NRC guidelines and regulations.

Alternative shutdown capability has been approved by the NRC (SER dated February 1983) and has been incorporated as discussed in section 3.6. For convenience, appendix D of this report provides a cross-reference matrix referencing the NRC position in BTP 9.5-1, the GPC response to each position as stated in the "Evaluation of the Hatch Nuclear Plant Fire Protection Program" (reference 1), and the current response as stated in this report. 3.3.2 Format of the Detailed Fire Hazard Analysis The analysis in sections 10.0 through 12.0 consists of a fire analysis data sheet for each fire area and zone and a detailed hazards analysis. The fire analysis data sheet is a summary of all important information contained in each fire area or zone and is described in section 5.0 of this report. The following sections are contained in the detailed hazards analysis of each fire area and zone. Description - This section lists the building in which the area or zone is located, the floor elevation, and the description of the area or zone.

Drawing Number(s) - This identifies the E. I. Hatch Nuclear Plant Fire Hazard Analysis drawing or drawings on which the area or zone is depicted.

Area - This section lists the floor area of the area or zone in square feet.

Combustible Material - This section defines the combustible loading as low, moderate, or high (as defined in section 3.5) and lists the major types of combustible material in the area or zone.

Design Basis Fire (DBF) - This section contains the postulated worst case fire in the fire area or zone in terms of an equivalent fire referenced to the standard exposure fire (as defined in section 2.0).

Construction - This section contains a description of the construction and rating of the boundaries of the fire area or zone.

Fire Protection - This section lists all of the elements of the fire protection systems within the fire area or zone.

HNP-FHA-3 3-4 REV 33 12/14 Appendix R Exemptions - This section lists any Appendix R exemptions that have been submitted or granted for the area.

Consequences of Design Basis Fire - This section contains the possible safety consequences for the plant in the event of a design basis fire. This section also contains a description of the sequence of events which will mitigate the consequences of a design basis fire and an evaluation of the ability of area or zone boundaries to contain the design basis fire.

Safe Shutdown Analysis - This section contains a listing of the safe shutdown components affected due to a loss of circuits in the area (for the path used for shutdown only) and the circuit protection or operator actions required.

3.4 Establishment of Fire Areas/Zones Fire areas are generally bounded on all sides by rated fire barriers or by substantially constructed walls exempted from rating requirements. Rated fire barriers typically have openings or penetrations protected with seals or closures, having a fire resistance rating equivalent to or greater than that of the barrier, including doors and HVAC dampers. All openings in rated barriers that do not have a fire resistance rating equal to that of the penetrated barrier have been evaluated according to the criteria in appendix I of this report.

Structural steel, which forms a part of a rated barrier, is protected with an equivalent rated coating of fire retardant material.

Where fire area boundaries are not rated fire barriers, the barriers have been evaluated for their ability to contain a design basis fire and to protect equipment within the area from a fire outside the area. Nonrated barriers typically considered acceptable are exterior concrete walls of major structures subject to insignificant outside fire hazards and interior concrete walls with few unsealed openings separating fire areas that have very low (less than 20,000 Btu/ft2) combustible loadings. Additional considerations include the available active fire protection features, location and size of openings, ceiling height, and location of safe shutdown equipment.

Requests for exemption from the requirement for a 3-h rating of nonrated fire barriers separating fire areas have been submitted based on these evaluations. Appendix C provides these exemption requests, along with the safety evaluation reports for those that have been granted. Appendix I of this report provides the evaluation criteria for penetrations in fire barriers that do not meet accepted, standard configurations or that cannot be inspected to verify their compliance with accepted standards.

An exception to the above boundary philosophy is the use of a combination of circuit protection and water suppression to divide each reactor building into two fire areas at and below elevation 185 ft 0 in. These boundaries consist of those engineered systems of sprinklers and circuit protection, in combination with existing architectural features, used to prevent a fire that occurs on one side of each unit's reactor building from propagating to or damaging safe shutdown circuits in the opposite side.

These systems consist of automatic sprinkler systems extending from the east-west centerline of each reactor building into each adjacent fire area to a distance of 20 ft beyond the last redundant opposite path component. Where only one path of equipment exists, the area of HNP-FHA-3 3-5 REV 33 12/14 sprinkler coverage is at least 20 ft wide. This separation has been reviewed and approved by the NRC (reference 8).

In a few instances, artificial area boundaries have been created to separate the control building from each turbine building. However, no credit has been taken for these artificial boundaries to prevent the propagation of a fire.

Hazards in the yard areas have been analyzed as separate hazards where there is no possibility of fire propagating due to large spatial separations or other physical features.

Fire zones within a fire area are established either on the basis of individual rooms or compartments for the convenience of identifying the combustible inventories, or on the basis of a significant concentration of combustible materials within an area. The Fire Hazard Analysis for fire zones evaluates the likelihood of propagation beyond the zone boundaries, assuming that the fire protection features in the zone are available, but takes credit for fire containment only at fire area boundaries.

3.5 Design Basis Fire The approach and analysis methods used for the calculation of the design basis fire for this Fire Hazard Analysis are described below:

3.5.1 Combustible Loading Combustible materials are categorized and quantified in each fire area or zone. Complete combustion of all combustible materials in the fire area or zone is assumed for the design basis fire. Each type of combustible (for cable trays see subsection 3.5.2) is multiplied by its heat of combustion, listed in table 3-1. The combustible loading is calculated by dividing the total heat of combustion by the floor area of the fire area or zone. The combustible loading is defined as low, moderate, or high as follows:

Low - the loading does not exceed an average of 100,000 Btu/ft2. Moderate - the loading exceeds an average of100,000 Btu/ft2 but is less than 200,000 Btu/ft2.

High - the loading exceeds an average of 200,000 Btu/ft2. Cable in conduit is not considered a part of the combustible loading. Small quantities of miscellaneous combustibles are, in some instances, not considered when they represent an insignificant contribution to the total combustible loading. For example, emergency light battery cases (approximately 4 lb of plastic) are not included, unless the room in which they are located is very small or contains very few other combustibles. TF-1, a class of less flammable synthetic fluids, is used in several transformers within the plant. This fluid has a flash point at or above 200° F; the heat of combustion is 4,800 Btu/lb. (See appendix K of this report for additional detail.)

HNP-FHA-3 3-6 REV 33 12/14 Silicone, a class of less flammable synthetic fluids containing polydimethylsiloxane, is used in several transformers within the plant. This fluid has an auto ignition point of 460°F. The heat of combustion is 11,600 Btu/lb.

3.5.2 Cable Tray Combustible Loading and Heat Release Calculation The purpose for performing this calculation is to determine the quantity of combustible cable insulation in each fire area or zone and the theoretical heat that could be released upon complete combustion of that insulation.

The length and size of cable trays is determined for each area or zone. The volume of a cable tray (in.2-ft) is calculated by multiplying its length in the area or zone by its cross-sectional area. The volume of cable is calculated by multiplying the cable tray volume by the percentage fill.

The percentage fill is recorded as 40 percent, the administrative design limit, for all cable trays that are filled with cable up to 40 percent by volume. This is a very conservative assumption since the actual fill of cable trays in the plant is generally much less than 40 percent. For cable trays that are more than 40-percent full, the actual percentage fill is used. For cases where the use of the 40% fill assumption could result in exceeding the maximum permissible loading for a zone, the actual tray fill may be used for all trays in the affected zone.

The insulation weight is calculated by multiplying the calculated volume by a mean unit weight of 0.617 lb/in.2-ft.

To calculate the heat released by the combustion of the insulation in each cable tray, multiply the insulation weight by an average calorific value of 11,500 Btu/lb of insulation. Appendix L of this report provides additional detail. The total cable insulation weight and potential heat release in each area is determined by the summation of these values for all cable trays in the area. Where cable trays are wrapped with a 1- or 3-h fire resistant material, the quantity of such cable is included in the calculated weight of combustibles in the analysis and matrix, but is not included in the heat release or fire loading (i.e., the heat of combustion is set equal to 0). 3.5.3 Maximum Permissible Fire Loading The maximum permissible fire loading represents an administrative limit on the maximum permanent and transient combustibles which can be contained in the fire area or zone.

Transient combustible loadings are not generally included in the calculation of the design basis fire; however, administrative controls require all movement of transient combustibles in safety-related structures to be approved by site fire protection personnel. It is intended that only those transient loads that cause the total combustible loading to exceed the maximum permissible loading would require further evaluation by the site fire protection personnel, with respect to additional suppression capability.

HNP-FHA-3 3-7 REV 33 12/14 The maximum permissible fire loading is determined by various factors, such as construction of the area or zone, available fire protection features, and commitments to support Appendix R exemptions. In general, the maximum permissible fire loading is limited to the following: a. Area or zone with no - 20,000 Btu/ft2 detection or automatic suppression.

b. Area or zone with - 100,000 Btu/ft2 detection and/or automatic suppression.

In the event that the existing fixed combustible loading is greater than the guidelines above, the maximum combustible loading is stated as the existing fixed loading plus 20,000 Btu/ft2.

3.5.4 Design Basis Fire Duration The design basis fire assumes total combustion of all combustibles contained in the fire area or zone. To calculate the design basis fire, the standard exposure fire (curve E, figure 3-1) is assumed. The fire loading calculated for each fire area or zone is divided by the heat rate for the standard exposure fire (table 3-2, 80,000 Btu/ft2 - h) to give the maximum fire duration in hours.

The design basis fire requires postulating the loss of components in the fire area or zone.

Considering this, there are two objectives in the fire hazard analysis of each area:

a. The boundaries, or fire barriers, are analyzed to verify their adequacy in containing the design basis fire in the fire area, so the adjacent fire areas with redundant equipment will not be jeopardized.

b. Safe shutdown components and circuits are evaluated to determine separation per 10 CFR 50, Appendix R, section III.G. 3.6 Summary of the Safe Shutdown Evaluation The evaluation of safe shutdown capability has been performed and documented in the Safe Shutdown Analysis Report. Appendix E of this report describes the assumptions and methodology utilized in these evaluations. These analyses determine paths (path 1, 2, and 3) of minimum equipment required to safely shut down (cold shutdown) HNP Units 1 and 2 for a design basis fire. The fire hazards analysis summarizes the results of these analyses by stating which path is required for shutdown in each fire area, diesel generator(s) required for shutdown for each fire area, number of safe shutdown components in each fire area, and tabulating the safe shutdown components of the path used for safe shutdown which are affected by a fire in the area as a result of having circuits routed through the area. These analyses also indicate any required actions. The major systems and equipment required were defined by General Electric in "Minimum Systems Required for Safe Shutdown During a Fire in Edwin I. Hatch HNP-FHA-3 3-8 REV 33 12/14 Nuclear Power Stations Units 1 and 2" (NEDO-24372) and further refined in "Safe Shutdown Appendix R Analyses for Edwin I. Hatch Nuclear Power Stations Units 1 and 2" (MDE-03-0186).

High/low pressure interface components are analyzed separately from the "normal" path 1 and path 2 safe shutdown systems and are not summarized in this report.

In addition, each fire area or zone has been categorized as safety related or nonsafety related based on whether any safety-related equipment is located within the area or zone boundaries as defined in table 1 of reference 1.

3.7 Flooding/Inadvertent Actuation The Fire Hazard Analysis does not specifically address the effects of flooding or water spray due to the rupture or inadvertent actuation of fire suppression systems. Rupture of moderate energy systems is described in chapter 3 of the FSAR.

HNP-FHA-3 REV 28 11/10 TABLE 3-1 (SHEET 1 OF 2) TABLE OF COMBUSTIBLE CHARACTERISTICS Density Heat of Combustion Material (lb/unit value) (Btu/lb or unit)

Oils and Greases Grease 7.04 lb/gal 155040 Btu/gal Diesel Fuel Oil 7.43 lb/gal 148600 Btu/gal Lube Oil 7.40 lb/gal 132800 Btu/gal Gasoline 6.15 lb/gal 127700 Btu/gal Transformer Oil 7.48 lb/gal 143000 Btu/gal EHC Fluid 7.00 lb/gal 16000 Btu/lb TF-1/TF-X Fluid 12.50 lb/gal 4800 Btu/lb Transformer Oil Silicone 8.00 lb/gal 11600 Btu/lb Class A Combustibles Wood 36.3 lb/ft3 8000 Btu/lb Plank (2 x 4) 2.02 lb/lin ft 8000 Btu/lb Plank (2 x 10) 5.04 lb/lin ft 8000 Btu/lb Plank (2 x 12) 6.05 lb/lin ft 8000 Btu/lb 1/2 in. Plywood 48.4 lb/8 ft sheet 8000 Btu/lb 3/4 in. Plywood 72.6 lb/8 ft sheet 8000 Btu/lb 1 in. Plywood 96.8 lb/8 ft sheet 8000 Btu/lb Paper 58.0 lb/ft3 7800 Btu/lb Rags & Cloth 5 lb/gal 7800 Btu/lb Cardboard 63 lb/ft3 7200 Btu/lb Clothing (PCs) 5 lb/gal 9000 Btu/lb Wood Desks 400 lb/desk 8000 Btu/lb Metal Files 500 lb/file 8000 Btu/lb Ladders (fiberglass) 3 lb/lin ft 43333 Btu/lb Charcoal 33 lb/ft3 12920 Btu/lb Carpet 1.98 lb/ft2 13300 Btu/lb Tape (cloth) 37.4 lb/ft3 7800 Btu/lb Plastics Plastic - 20000 Btu/lb Respirators - 9000 Btu/lb Battery Cases - 20000 Btu/lb HNP-FHA-3 REV 28 11/10 TABLE 3-1 (SHEET 2 OF 2)

Density Heat of Combustion Material (lb/unit value) (Btu/lb or unit)

Miscellaneous Acetylene 14.7 ft3/lb 1451 Btu/ft3 Hydrogen 192.0 ft3/lb 319 Btu/ft3 Propane 8.51 ft3/lb 2480 Btu/ft3 Resin 40 lb/ft3 19000 Btu/lb Rubber 94 lb/ft3 19400 Btu/lb Cable Insulation 88.9 lb/ft3 11500 Btu/lb Dimethylamine 42.5 lb/ft3 18000 Btu/lb Paint 7.86 lb/gal 12000 Btu/lb Solvent 6.6 lb/gal 13250 Btu/lb Methanol 6.68 lb/gal 9758 Btu/lb HNP-FHA-3 REV 28 11/10 TABLE 3-2 TYPICAL TABLE OF FIRE RESISTANCE REQUIREMENT Fire Loading (Btu/ft2) Barrier NFPA Curve Fire Resistance Requirement A B C D E**

30 min. 10,000 20,000 28,000 33,000 40,000

1 h 20,000 40,000 56,000 66,000 80,000 1 h., 30 min. 30,000 60,000 84,000 99,000 120,000

2 h 40,000 80,000 112,000 132,000 160,000 2 h., 30. min. 50,000

• 100,000

• 140,000

• 165,000

• 200,000

3 h 60,000

• 120,000

• 168,000

• 198,000

• 240,000

• Extrapolated value

• • Standard Time-Temperature Curve (NFPA 251, 1981)

HNP-FHA-5 5-1 REV 28 11/10 5.0 FIRE AREA DATA SHEET EXPLANATORY NOTES This section contains descriptions of the various parts that make up the Fire Hazard Analysis (FHA) data sheet contained in the detailed fire hazard analyses.

5.1 Fire Area/Zone A fire area is defined as an area sufficiently bounded to withstand the hazards associated with the area and, as necessary, to protect important equipment within the area from a fire outside the area. A fire zone is that portion of a fire area that is best analyzed separately as a zone within a fire area due to its unique combustible loading or fire characteristics. A fire zone is a subset of a fire area. Each fire area/zone has an alphanumeric designator as follows:

XXXXX Unit (see below) Fire Zone Identifier Building I.D. (Alpha Character). If this (see below) designator is not present, the fire area is not Sequential Area I.D. subdivided into zones.

Building I.D. Description Unit Designation 0 Control building 0 Common areas 1 Turbine building 1 Unit 1 2 Reactor building 2 Unit 2 3 Radwaste and radwaste addition bldg. 4 Diesel building 5 Intake structure 6 Yard areas containing safe shutdown circuits or components, a significant radiological hazard, or safety-related equipment 7 Fire pump building 8 Miscellaneous Each fire area or fire zone will have a data sheet and will be identified as being safety related or nonsafety related.

5.2 Description Brief descriptions of the fire areas or zones are given as determined from plant drawings and walkdowns. The elevation is also determined from plant drawings.

HNP-FHA-5 5-2 REV 28 11/10 5.3 Drawing Number(s)

The applicable FHA drawings for the fire areas or fire zones are listed.

5.4 Area The floor areas were calculated using plant civil and structural drawings as a reference. Internal floor areas of stairwells are for only one elevation.

5.5 Combustibles The combustibles in each fire area or zone are determined by a detailed review of drawings and equipment specifications, cable and raceway schedules, and a detailed physical survey of the plant. Combustible material is categorized by type as:

• Oil and grease.

• Cable (see subsection 3.5.2).

• Class A (wood-based products and cloth).

• Charcoal.

• Plastics.

• Miscellaneous (rubber, carpet, fiberglass ladders, solvents, etc.).

• Miscellaneous gases (bottled combustible gases).

Bottled gases and piped gases (hydrogen for generator cooling) are included in the combustible loading.

5.6 Design Basis Fire The design basis fire (DBF) represents the complete combustion of all flammable materials in the area or zone and is expressed as a fire loading in Btu per square foot. This is an extremely conservative definition of the DBF, since it is based upon 40-percent cable tray fill volume or the actual tray fill, whichever is greater, plus the actual amount of other combustibles.

The fire loading for each fire area is calculated by the methodology described in section 3.0 of this report and by the FPDS (Fire Protection Data System) computer code supplied as an integral part of this report.

For the calculation of the heat released by the complete combustion of the cable insulation in each area, see section 3.0 of this report. In this analysis, cable routed in conduit is not HNP-FHA-5 5-3 REV 28 11/10 considered as a combustible and is not included in the calculation of the DBF. Cable which is wrapped with a 1-h or 3-h fire resistant barrier is also not included in the calculation of the design basis fire.

The maximum permissible fire loading is an administrative limit which defines the maximum fire loading which may be contained in the area or zone. The maximum fire loading value is based on an even distribution of the combustible materials within the fire area or zone and is determined using the methodology in section 3.0 of this report.

The maximum permissible fire loading value is based upon curve E from NFPA 251 as shown in figure 3-1.

The difference between the maximum permissible fire loading and the actual fire loading reflects the administrative amount of transient combustibles which may be allowed in the area or zone.

Authorization by the manager-engineering support, upon recommendation of the plant fire protection staff, must be obtained prior to exceeding the maximum permissible fire loading.

The fire duration stated is the total burn time of the DBF determined by dividing the fire loading for the area or zone by 80,000 B/ft2 which corresponds to a 1-h fire on the NFPA curves.

5.7 Fire Protection (Available) The fire suppression and detection available in the fire area or zone is listed in tabular form in this section of the data sheet.

Suppression - The type of fixed suppression in the fire area or zone is noted.

Hose Stations - The type (H2O, CO2) of hose stations in the fire area or zone is noted.

Portable Extinguishers - The type of portable fire extinguishers is provided.

CO2 - Carbon Dioxide Dry Chem - Extinguisher suitable for fighting Class A, B, or C fires

Halon

Detectors - The type of detectors is indicated. FC is used to denote full area or zone coverage by detectors. PC indicates partial coverage. The portions of the area or zone equipped with partial coverage are described in the text section which follows each data sheet and on the figures depicting each fire area and zone.

HNP-FHA-5 5-4 REV 28 11/10 5.8 Fire Resistance Rating (Construction) 5.8.1 Walls The material of construction and the ratings for the area or zone boundaries are listed in an abbreviated format. The abbreviations used are as follows:

Materials:

C - concrete (minimum 8-in. thickness)

B - concrete block S - steel or sheet steel SR - sheetrock (gypsum board) H - PROMAT-H Ratings 3 h rated 2 h rated 1 h rated NR - Nonrated

An example of the format used on the data sheet is:

N,S,W-C/3;E-B/3,NR This is interpreted as; north, south and west boundaries are constructed of concrete and are 3-h rated. The east wall is constructed of concrete block. A portion of this wall is 3-h rated and a portion is nonrated. The specifics of walls, which are partially rated or are constructed of more than one material, are provided in the text section.

5.8.2 Floors, Ceiling, or Roof Only the material of construction is provided on the data sheet for floors and ceilings. Their ratings are discussed in the text section.

5.8.3 Fixed Openings Openings such as hatches and open stairwells and openings in walls, floors, or ceilings are listed as fixed openings in the rated fire barriers. The following abbreviations are used:

HNP-FHA-5 5-5 REV 28 11/10 Fixed Openings Legend OS = open stairwell or ladder OP = opening OD = open doorway CH = concrete hatch OH = open or grated hatch MH = metal hatch SG = seismic gap M = manhole SD = smoke damper The fire area or zone with which the fixed opening communicates is also listed. As an illustration, OH/1101 indicates an open hatch that communicates with fire area 1101.

5.8.4 Penetrations Penetrations are addressed in the text for fire areas only. Penetrations, which are rated equal to or greater than the penetrated structure, are not specifically noted. Those penetrations that deviate from rating requirements or standard configurations in any way are evaluated under the criteria discussed in appendix I of this report.

Each penetration is assigned an alphanumeric designator that conforms to the following structure:

Fire Protection MPL Fire Protection Penetration Unit No. (Unit 1 if Common) Sequential No. 1 U 43 H 001 A Building Code Floor Elevation T = Reactor A = 087 ft U = Turbine B = 103 ft V = Radwaste C = 112 ft X = Other D = 130 ft Y = Diesel Generator E = 132 ft Z = Control F = 147 ft G = 148 ft H = 158 ft J = 164 ft K = 180/185 ft L = 203 ft M = 228 ft HNP-FHA-5 5-6 REV 28 11/10 5.8.5 Doors All of the doors that serve the area or zone are listed in the following manner: Fire-rated class area or zone number (I.D.). The following abbreviations are used for listings and class.

NR = nonrated door L = nonrated, bullet-resistant door A = Class A fire door (3-h fire-resistance rating)

B = Class B fire door (1 1/2-h fire-resistance rating)

C = Class C fire door (3/4-h fire-resistance rating)

W = Watertight door - nonrated X = Class A equivalent fire door

For example, A/1104 indicates a Class A door to fire area 1104; WX/1005 indicates a nonrated, watertight door for which an exemption from the requirement for a Class A door has been granted.

HNP-FHA-6 6-1 REV 28 11/10

6.0 REFERENCES

1. "Evaluation of the Hatch Nuclear Plant Fire Protection Program," Georgia Power Company, Amendment 9.

2. Edwin I. Hatch Safety Evaluation Report, Fire Protection Review Units 1 and 2, USNRC, October 4, 1978. (See Appendix C.)

3. "Response to 10CFR50.48 and Appendix R," Georgia Power Company, Amendment 3, June 17, 1983.

4. Impell Corporation Calculation No. 1380-027-C001, "Model Cable Calculation," Revision 1. (See Appendix L.)

5. Impell Corporation Calculation No. 1380-027-C004, "Combustible Value Calculation," Revision 0. (See Appendix L.)

6. Administrative Control Procedure, Fire Protection Program, Procedure Number 40AC-ENG-008-0S.

7. Title 10 to the Code of Federal Regulations, Section 50.48, "Fire Protection" and Appendix R, "Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1, 1979."

8. Safety Evaluation Report, Exemption from 10CFR50 Appendix R, USNRC, April 18, 1984. (See Appendix C.)

9. Safety Evaluation Report, Appendix R to 10CFR50, USNRC, February 11, 1983. (See Appendix C.)

10. ASTM E-119, "Fire Test of Building Construction and Materials."

11. Fire Protection Handbook, Fifteenth Edition, National Fire Protection Association, 1981.

12. E.I. Hatch Nuclear Plant-Unit 1 Electrical Separation Criteria and Raceway and Cable Numbering System, Drawing No. A-17361, Revision 4.

13. E.I. Hatch Nuclear Plant-Unit 2 Electrical Separation Criteria and Raceway and Cable Numbering System, Drawing No. A-27001, Revision 7.

14. Generic Letter 86-10, "Implementation of Fire Protection Requirements," USNRC, April 24, 1986.

15. "Response to Application for Change to Facility Operating Licenses," USNRC, Amendments Nos. 133 and 70, November 24, 1986.

16. Safety Evaluation Report, Exemption from 10CFR50 Appendix R, USNRC, January 2, 1987. (See Appendix C.)

17. E.I. Hatch Nuclear Plant Safe Shutdown Analysis Report, Revision 2.

HNP-FHA-6 6-2 REV 28 11/10 18. Edwin I. Hatch Nuclear Plant Unit No. 1 and 2 Fire Hazard Analysis Drawings:

Sheet Number H-11801 H-11802 H-11804 H-11805 H-11806 H-11807 H-11811 H-11812 H-11814 H-11815 H-11816 H-11817 H-11818 H-11820 H-11821 H-11822 H-11823 H-11826 H-11827 H-11828 H-11829 H-11830 H-11831 H-11832 H-11833 H-11834 H-11835 H-11836 H-11837 H-11839 H-11840 H-11841 H-11842 H-11843 H-11844 H-11846 H-11847 H-11848 H-11850 H-11851 H-11852 H-11854 H-11855 H-11856 H-11857 H-11859 H-11860 H-11861 HNP-FHA-6 6-3 REV 28 11/10 Sheet Number H-11862 H-11863

HNP-FHA-7 Fire Suppression and Detection System Summary 7-1 REV 28 11/10 LEGENDS Suppression Zone System Type CO2 Carbon Dioxide DL Deluge DP Dry Pipe H Halon PA Pre Action WP Wet Pipe WS Water Spray Detection Zone System Type DP Dry Pilot IS Ionization Smoke LT Linear Thermal PE Photoelectric PS Pressure Switch ST Spot Thermal Buildings CAS Central Alarm Station CB Control Building CST Condensate Storage Tank DG Diesel Generator Building FPP Fire Protection Pumphouse IS Intake Structure LLR Low Level Radwaste Building OG Offgas Building RA Radwaste Building Addition (U1) RW Radwaste Building RX Reactor Building SB Service Building SIM Simulator Building TB Turbine Building WG Waste Gas Building YD Yard Areas or Structures

8.0 Fire Hazard Analysis Figures

Date: 5/14/2010Time : 10:22:56 AMTitle: C:\DATA\Documentum\Viewed\H11801.cal

HNP-FHA-9 REV 28 9/10

SECTION 9.0 APPENDICES

HNP-FHA-9 9.8-H-1 REV 31 9/13 APPENDIX H APPLICATION OF NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) CODES 1.0 GENERAL The fire detection and suppression systems were installed at Plant Hatch following the special hazards design basis technique allowed by the National Fire Protection Association codes. This technique utilized a combination of NFPA 13, 15, 72A, 72B, 72C, 72D, and 72E to ensure the maximum effectiveness of the system to limit the fire hazard at Plant Hatch and to take into account the unique structural configuration and protection problems inherent in a power plant.

These codes and regulations are basically tailored for protection of rooms or areas with relatively regular surfaces and features. This is a situation seldom realized in the highly congested conditions encountered in the majority of the rooms in a power plant. In recognition of such conditions and of the special hazards encountered in a nuclear power plant, sound engineering judgment must be exercised in the design and installation of its fire protection systems rather than routine, absolute compliance with rules which are not always appropriate to the situation.

Occasionally, minor deviations from the codes, principally in sprinkler head or detector placement relative to the ceiling, must be taken because of congestion; e.g., cable trays, piping, ducting, in the area of a suppression system. Such deviations are taken only when they will result in equal or superior protection to that which would result from an inflexible conformance to codes or regulations, if such were possible.

2.0 SPECIFIC CODE DEVIATIONS The following paragraphs outline certain general code deviations that have been necessary in past installations of fire protection systems. Nuclear Regulatory Commission (NRC) approval of these deviations from NFPA codes was granted in the October 1978 or April 1982 Safety Evaluation Report. Each of the following paragraphs contains a justification for the requested code deviation.

2.1 DEPARTURE FROM NFPA 13, 14, AND 15 WITH RESPECT TO HANGER SELECTION AND SPACING NFPA criteria governing the hanger design, selection, and spacing criteria for fire suppression systems outlined in NFPA 13, 14, and 15 do not provide for a seismic hanger support system.

In order to achieve the necessary system integrity for a Class 1 support system, the piping configuration is subjected to a sophisticated rigid analysis for hanger location. The type of hanger assemblies required to withstand the excessive loads and movement above NFPA allowances results in each hanger assembly as a unique design requirement. The resulting installation is an engineered system of superior integrity as opposed to the generalized HNP-FHA-9 9.8-H-2 REV 31 9/13 instructions set forth by NFPA for such structures as warehouse, health care facilities, and general office structures.

It is, therefore, necessary to depart from these codes for pipe supports.

2.2 DEPARTURE FROM NFPA 13, 14, AND 15 WITH RESPECT TO COMPONENT SELECTION The NFPA codes specify the use of components listed for fire service by Underwriters Laboratory (UL). Components listed by UL are used to the extent practicable, but not all components are UL listed.

UL does not list every component utilized in the fire protection systems. In selected cases, more stringent operability requirements, contrary to fire protection desires, dictate the selection of nuclear grade devices. However, in each case, an engineering evaluation is performed to ensure all criteria are satisfied prior to the final selection.

Closed head directional spray nozzles are utilized because of the ability of the nozzle to deliver better water dispersion with the excessive congestion that exists. The directional spray nozzles were reviewed by the NRC and accepted for use in the subject utility during the initial Fire Protection Reevaluation. Additional considerations for head selection included overspray control for equipment and devices not involved with the specific hazard.

The component selection is judged equal to or better than NFPA guidelines due to the ability to provide water coverage and protection for the hazard while controlling water overspray and flooding potential.

Multibushing reductions are used in a limited number of cases due to nonavailable American Society of Testing Materials (ASTM) A-234 forged steel reducing fittings and excessive congestion for the pipe runs. Flow capability and pressure retention are verified at the conclusion of installation by flow test and hydrostatic pressure tests. In light of the quality control provisions required for this facility, fabrication material, acceptance testing, and frequency of inspection, each system is judged superior in quality and exceeds the provisions set forth by NFPA guidelines.

2.3 DEPARTURES FROM NFPA 13 AND 15 WITH RESPECT TO SPRINKLER HEAD/NOZZLE PLACEMENT Sprinkler head/nozzle placement does not follow NFPA 13 and 15 criteria in all locations.

Deviations exist where congestion will not allow placement of the device within NFPA allowable tolerances. An engineering analysis (as permitted by the special hazards philosophy discussed in the NFPA codes) is performed on each head/nozzle that cannot be located per NFPA guidelines. This analysis is performed on a case-by-case basis to ensure that the system performance meets or exceeds NFPA criteria. As a result of excessive congestion of ductwork, trays, and piping, sprinkler head placement was selected for water distribution requirements, head obstruction, heat stratification, and heat banking to ensure timely delivery of a sufficient head flux level so the sprinkler head actuates. In addition, the sprinkler densities and the HNP-FHA-9 9.8-H-3 REV 31 9/13 selection of lower operating temperature elements, which exceed the minimum directions provided by NFPA, were incorporated to maintain acceptable time lag for suppression system operation.

In view of the material presented above, the system departures from NFPA are judged equal or better than the location criteria outlined for conventional structures through the applicable sections of NFPA 13 and 15.

2.4 DEPARTURES FROM NFPA 72E WITH RESPECT TO DETECTOR PLACEMENT Smoke/heat/fire detector placement does not follow NFPA 72E criteria in all locations. The location of each detector utilized several variables, such as smoke and heat stratification, heating, ventilation, and air-conditioning (HVAC) airflow(s), ceiling congestion, distance from floor to ceiling, as well as the building's configuration and the manufacturer's recommendations (as instructed by NFPA 72E) when placing the detectors. Detectors are placed per NFPA 72E, when the engineering analysis provides an acceptable system performance. The NRC recognizes the lack of solid criteria provided by NFPA 72E, as well as the limited state-of-the-art knowledge in fire detection equipment and location. In view of this art of detection, the detection equipment and installation are judged as equal to the NFPA 72E series with respect to installed equipment.

2.5 DEPARTURES FROM NFPA 13, 14, 15, AND 20 WITH RESPECT TO WELDING PROVISIONS Exemption is taken from the no welding provisions of NFPA 13, 14, 15, and 20. Justification for this exemption resides in the controls required for hot work activities, which are in accordance with other NFPA guidelines. These controls and the requirements for Seismic Class 1 installation and restricted movement during modification or maintenance activities often require welded assemblies. These features, in conjunction with the fire watch and extensive training of site personnel, assure that potential fire conditions are controlled in an acceptable manner.

2.6 DEPARTURES FROM NFPA 20 WITH RESPECT TO ELECTRIC FIRE PUMP CONTROLLERS The applicable guidelines for the electric fire pump motor and controller are found in Chapter 7 of NFPA No. 20. Information is provided below which demonstrates how the HNP fire pump motor and controls meet each of the requirements of the corresponding numbered part of Chapter 7 of NFPA No. 20.

7-1.1.1 The Westinghouse Electric Corp. Type 4160-V metal-clad switchgear is listed for electric motor-driven pump service.

7-1.1.2 The switchgear meets the requirement.

HNP-FHA-9 9.8-H-4 REV 31 9/13 7-1.1.3 A nameplate is on the door of the switchgear frame designating the breaker for the electric fire pump. The other requirements are met.

7-1.1.4 Westinghouse service representatives are available when needed.

7-2.1 The switchgear breaker is not in sight of the electric motor.

7-2.2 The switchgear breaker is located in another building and is not subject to water escaping from pumps or pump connections.

7-2.3 The switchgear breaker is serviced from the front of the unit.

7-3.1 The switchgear is located in an electrical equipment room.

7-3.2 The switchgear is attached to a steel channel embedded in a concrete floor which is part of a Seismic Category I building.

7-3.3 The switchgear housing is Seismic Category I and protects the breaker as specified.

7-3.4.1 The switchgear will meet this requirement.

7-3.4.2 See 7-6.2.

7-3.4.3 The switchgear will meet this requirement.

7-3.5 Fuses and/or circuit breakers are provided in the dc control circuit.

7-3.6 The circuit breaker is used as a disconnect switch and meets the code requirement to be externally operable.

7-3.7.1 A wiring diagram is furnished and is stored in the plant record file as is all wiring diagrams for Plant Hatch.

7-3.7.2 The switchgear meets this requirement.

7-3.8 The electrical system will meet this requirement.

7-3.9 Instruction books as well as drawings are furnished with the equipment and are filed in the record section of Plant Hatch.

7-4.1 HNP has no isolating switch as such. HNP has the capability of drawing out the 4-kV breaker and locking it in this drawout position for circuit isolation.

7-4.2.1 The switchgear will meet this requirement.

7-4.2.2 The switchgear breaker will meet this requirement.

HNP-FHA-9 9.8-H-5 REV 31 9/13 7-4.2.3 The switchgear breaker will meet this requirement.

7-4.2.4 The switchgear breaker will meet this requirement.

7-4.2.5 The switchgear breaker will meet this requirement.

7-4.2.7 The switchgear breaker will meet this requirement.

7-4.2.7(a) The switchgear breaker is of the time delay type and has a time delay of not over 20 s. It is standard motor protection practice to set breakers at 140 percent of the motor full-load current, and the fire pump breaker is set at this value.

7-4.2.7(b) Not applicable.

7-4.2.8 The switchgear breaker short-circuit rating is greater than the available short-circuit current of the circuit. No current limiting fuses are needed.

7-4.2.9 A short-circuit study was made to establish the available short-circuit current at the switchgear, and this information was factored into the purchase of the switchgear.

7-4.2.10 A nameplate is attached to the door of the switchgear breaker.

7-4.3 It is standard practice to use a switchgear breaker instead of a starter for all 4-kV motor control.

7-4.4 See 7-6.6.

7-4.5(a) There is an annunciator in the main control room (MCR) that indicates the pump is running. The power supply for the annunciator is monitored continuously.

7-4.5(b) There is an annunciator in the MCR that indicates bus potential on all three phases of the switchgear. There is an alarm on loss of power on the bus.

7-4.6 Auxiliary contacts on the breaker are used to provide pump indication.

7-5.1 The switchgear breaker is closed by (1) drop in water pressure, (2) deluge or sprinkler valve opening, or (3) manually starting at either the pushbutton station in the mail room or in the pump house.

7-5.2.1 See 7-6.4.

7-5.2.2 The fire pumps started automatically from the following two control signals: drop in pressure on water main or opening of any deluge or sprinkler valve.

When the deluge or sprinkler valve opens, a relay is energized whose contact closes to close the breaker and start the pump. The power source for the circuit is from the station battery.

HNP-FHA-9 9.8-H-6 REV 31 9/13 7-5.2.3 HNP does not have electrical pumps operating in parallel.

7-5.2.4 The breaker can be operated mechanically with loss of control power.

7-5.2.5 The electric fire pump can be shut down manually at a pushbutton station at the fire pump house.

7-5.3.3 See 7-5.2.4.

7-5.4 The electric fire pump can only be stopped manually from a pushbutton station located at the fire pump station.

7-6.2 HNP has an ammeter mounted on the switchgear and bus potential.

7-6.3 The circuit breaker used as an isolating device is rated for load interrupting and does not require this restriction.

7-6.4 The pressure switch and the switchgear breaker are located in separate buildings.

7-6.5 The control voltage is from the Class IE station battery system.

7-6.6 There are bus potential indicating lights in the MCR to indicate potential on all three phases of the switchgear bus to which the electric fire pump is connected. The control power for these indicating lamps comes from the secondary winding of the bus potential transformers.

7-6.7 Necessary provisions are made in the switchgear construction to protect personnel from accidental contact with high voltage.

7-6.8 The circuit breaker provided is capable of interrupting a short circuit on the load side of the breaker.

7-7 Not applicable.

2.7 DEPARTURES FROM NFPA 13 WITH RESPECT TO NAMEPLATE REQUIREMENTS Exception is taken to the requirement of NFPA 13:7-1.2 to supply each hydraulically calculated automatic sprinkler system riser with a nameplate denoting the location and design basis of the sprinkler system. This exception is based upon the following measures which generate familiarity with established fire-fighting systems and more than compensate for the absence of nameplates.

1. Plant Hatch is a private facility staffed with trained fire-fighting personnel who are knowledgable of the plant's automatic water suppression apparatus.

HNP-FHA-9 9.8-H-7 REV 31 9/13 2. All information required for nameplates is readily available in the Plant Hatch document control system.

3. Fire drills and surveillances are conducted regularly.

2.8 DEPARTURE FROM NFPA 20 WITH RESPECT TO FUEL SUPPLY TO FIRE PUMPS Exception is taken to the requirement of NFPA 20:8-4.4 to provide separation of fuel supply to multiple fire pumps. The fire pump fuel supply at Plant Hatch uses separate tanks and lines that are joined by a common crossover line with an isolation valve. The isolation valve is normally locked closed, thus providing effective separation between the two fuel supply systems. Each tank and fuel supply line system is dedicated to the pump it directly supplies. The crossover line provides an added measure of security to the fuel supply system in the event of an interruption of fuel supply to either of the fire pumps. Since separation of fuel supply is the normal operating mode and the crossover acts only as a contingency in case of emergency, the system at Plant Hatch is compatible with NFPA 20:8-4.4.

2.9 DEPARTURE FROM NFPA 24 WITH RESPECT TO HYDRANT OUTLET HEIGHT (ABOVE GRADE OR SLAB SURFACE) Exemption is taken for the minimum distance requirements for hydrant outlets from grade or slab surface as indicated in NFPA 24:4-3.3. The requirement is intended to guarantee unobstructed hose access to the outlet connection. Some of the hydrants at Plant Hatch do not fully comply with the minimum distance specified in the NFPA code.

However, according to Plant Hatch fire protection engineering response to AIT

1. RC9600072, field trials demonstrate that all applicable hydrants are functionally compliant with the intent of NFPA 24.

2.10 DEPARTURE FROM NFPA 80 WITH RESPECT TO FUSIBLE LINKS Exemption is taken for the installation of fusible links on both sides of sliding doors as indicated in NFPA 80:4-6.3 (1983 edition). The requirement is intended to ensure a fire on either side of the sliding door would close the fire door and contain the fire spread. Some of the sliding doors at Plant Hatch do not fully comply with the requirement to have a fusible link on both sides of the door as specified in the NFPA code. However, according to DOEJ-HRLDCR2011067, which is attached to LDCR 2011-067 and TE 297827 and TE 297831 as a non-QA record (in Documentum as Doc ID RE203108429 and Doc ID RE203108430), the single-sided fusible links are deemed acceptable.

HNP-FHA-9 9.9-I-1 REV 28 11/10 EVALUATION OF NON-RATED PENETRATION SEALS IN RATED FIRE BARRIERS

1.0 INTRODUCTION

AND SCOPE Section III.G.2 of Appendix R to 10 CFR 50 provides prescriptive measures for the protection of cables or equipment of redundant systems necessary to achieve and maintain hot shutdown conditions when located in the same fire area. In generic letter 86-10, the Nuclear Regulatory Commission (NRC) defined a fire area as "an area sufficiently bounded to withstand the hazards associated with the area and, as necessary, to protect important equipment within the area from a fire outside the area."

In general, this definition is met by designing the boundaries (walls, floors, and ceilings) of the fire area as rated fire barriers with all penetrations sealed with a fire resistance rating equal to or greater than that of the barrier. However, where the fire area boundaries are not completely sealed wall-to-wall and floor-to-ceiling, the NRC states that the licensee may perform an evaluation to determine if the boundaries will withstand the hazards associated with the area.

Plant Hatch maintains a program to document the integrity of its existing fire barriers and to evaluate the need to upgrade additional walls for compliance with Appendix R. This program includes a field verification of each fire barrier penetration to document type, location, and conformance to design criteria. Exception reports are generated for any penetrations not properly sealed or where the fire resistance rating cannot be verified.

These reports evaluate each penetration to determine the effect on the fire-rated barrier.

2.0 METHODOLOGY The evaluation of the acceptability of an unrated penetration in a fire-rated barrier is based on the likelihood of significant propagation of heat (radiant, conductive, or convective) through the penetration. Such an evaluation is usually qualitative and is dependent upon such factors as size and location of the penetration, type, and location of combustible materials, the fire protection features provided to detect or suppress fires, and the relative location of safe shutdown components.

3.0 ANALYSIS The detailed deviation analyses for all excepted penetrations are located in calculation SMNH 98-023, a dynamic record of evaluation. Any penetration configurations that do not conform to documented testing criteria for the specific barrier rating are included in this calculation. Penetrations that are upgraded from an excepted condition to an acceptable configuration supported by testing documentation are removed from the calculation. The calculation may include, but is not limited to, the following criteria for establishing a reasonable deviation analysis for each excepted seal configuration:

• Identification of the penetration configuration by MPL number HNP-FHA-9 9.9-I-2 REV 28 11/10

• Identification of the fire-rated barrier (including location, rating, and fire zone numbers)

• Reference drawing numbers

• Area fire protection features (including automatic suppression/detection systems, fire loading, and fire severity determination)

The deviation analysis criteria are used to establish a qualitative argument demonstrating that the excepted seal does not compromise the rating of the barrier.

This argument is the basis for the exception.

HNP-FHA-9 9.9-I-3 REV 28 11/10 TABLE 9.9-1 (Deleted)

HNP-FHA-9 9.9-I-4 REV 28 11/10 TABLE 9.9-2 (Deleted)

Section 9.3 has been relocated to FHA Volume 4, Historical Fire Hazards Analysis and Fire Protection Program Information under tab 13.1, Exemption Request Submittals and Safety Evaluation Reports.

10.0 Common Areas Fire Hazard Analysis

HNP-FHA-10 10.2-1 REV 28 11/10 FIRE AREA 0101 This area is not considered safety related.

DESCRIPTION Turbine Operating Deck Unit 1 and Unit 2 Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11807, H-11817, H-11823

AREA 85,126 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A Wood, paper, tape (cloth), trash, cardboard, plywood, clothing, files, plank Charcoal Charcoal Plastics Plastic, ladders, respirators Miscellaneous Rubber, carpet Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2; Dry chem; Portable foam unit Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W,-C/NR

- Floors, Ceiling, or Roof Concrete

- Fixed Openings OS, OH, SG, CH, MH/2101,1101;MH/1023,2023, MH/0025;OP/0031;SD/Outside,1102,1103,2102,2103

- Penetrations See text

- Doors (Fire-rated Class/Zone no.) 5-A/0024;2-A/2301;A/1203;2-B/0002;B/1102,1103, 2102,2103;NR/0028

HNP-FHA-10 10.2-2 REV 28 11/10 CONSTRUCTION The north, south, east, and west walls of this area are reinforced concrete turbine building exterior walls and are nonrated. The walls around the main control room (MCR) (area 0024) are concrete and are 3-h rated, with the exception of the MCR west entryway, which is block and 3-h rated. The walls around the freight elevator and stairwell (area 0002) are block and 2-h rated. The east wall contains nonrated steam blowout panels communicating with areas 1205 and 2205 (see exemptions). There are four stairwells; two on the north end of the area (areas 1102 and 1103) and two on the south end (areas 2102 and 2103) which have block walls and are 2-h rated. There is a nonrated metal building outside the MCR on the south side enclosing the stairwell to area 0028. The floor is reinforced concrete with open hatches down to areas 1101 and 2101. There are also closed hatches to areas 2101, 1101, 0025, 1023, and 2023. The ceiling is reinforced concrete with smoke dampers. There are eight fire-rated Class A doors; five to area 0024, one to area 1203, and two to area 2301. There are six fire-rated Class B doors; two to area 0002, and one each to areas 2102, 2103, 1102, and 1103. There is a nonrated door in the metal building to 0028.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

The floor is considered an area boundary only for purposes of defining the open, common turbine operating deck, which is shared by both units, as a common area. Due to the hatches (down to areas 1101 and 2101), this floor is not rated. Defining this floor as a nonrated area boundary is acceptable, since:

A. Only areas 1101, 2101, and 0031 (MCR roof) communicate with or through this area. All of these areas rely on path 2 for safe shutdown. A rated barrier is not required between areas relying on the same path to achieve safe shutdown.

B. A fire is not expected to propagate from any adjacent area across the operating deck to any other areas due to the large amount of spatial separation of the propagation paths (hatches) and the arrangement of the fixed combustibles away from the propagation paths.

FIRE PROTECTION The turbine and generator bearings are provided with a fixed, manual water spray suppression system. Upon detection of high temperature, alarms annunciate both locally and in the MCR. The water spray is then manually activated after verification of a fire condition. The reactor feed pump rooms are provided with automatic water spray systems activated by the dry pilot portion of the system. The Unit 1 reactor feed pump turbine oil conditioner, located in this area, is also provided with an automatic water spray system activated by the dry pilot portion of the system.

Activation of the suppression systems results in an alarm in the MCR.

HNP-FHA-10 10.2-3 REV 28 11/10 FIRE PROTECTION (continued)

There are hose stations, a portable oil emulsion foam generator, portable CO2 and dry chemical fire extinguishers located throughout the area.

APPENDIX R EXEMPTIONS An exemption from the section III.G.2 requirements of Appendix R has been approved for the nonrated steam blowout panels between this area and areas 1205 and 2205. Exemptions from the section III.G.2 requirement for complete 3-h fire barriers have been requested, as is documented in appendix C of this document for:

- The nonrated metal hatches in the floor of this area to areas 1023 and 2023.

- The nonrated parapet walls and open ceiling between this area and area 0031.

- The nonrated metal stairwell enclosure around the stairs from this area to area 0028.

- The nonrated steam blowout panels between this area and area 1205.

However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire on the turbine operating floor would be associated with localized and widely separated concentrations of combustibles. Oil hazards associated with the turbine-generator bearings and the reactor feed pumps are equipped with automatic or manual water spray systems. There is no areawide detection, however, a fire would be identified in its early stages by the normal occupancy and high traffic flow. The high ceiling and large separation between concentrations of combustibles preclude flashover. The available firefighting equipment is adequate to extinguish a fire in this area. The open hatchways in the floor create a fire propagation possibility to the adjacent areas; however, the absence of any intervening combustibles between this area and the adjacent areas, the low combustible loading and substantial wall and floor construction preclude the propagation of the fire beyond this area. There are no fire hazards in the yard areas outside of the turbine building sufficient to breach the nonrated but substantially constructed exterior walls.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-10 10.2-4 REV 28 11/10 FIRE ZONE 0101A This zone is not considered safety related.

DESCRIPTION Unit 1 Turbine Building Main Floor Area Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11807, H-11817

AREA 24,290 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A Wood, paper, tape (cloth), trash, cardboard Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2; Drychem; Portable foam unit Detectors (type) Heat det at Gen bearings (PC); Ionization detectors in the Packaged Electrical & Electronic Control Compartment (PEECC) Bldg. and the power conversion room (PCR). (See section 7.0).

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W -C/NR; S-C/3, B/1, B/2, B/2 at TB and CB Stairwells - Floors, Ceiling, or Roof Concrete

- Fixed Openings OH/1101; SG/1101;2-CH/1101J; SD/Outside, SD/1102, 1103; MH/1023, 0025; OP/0101B, C, D, J, 0031 - Penetrations See Area 0101 text - Doors (Fire-rated Class/Zone no.) 2-A/0024C, D, 1203I; B/0002A, B, 0101E, 1102, 1103; C/0101H; 3-NR/0101B; NR/0101C, D HNP-FHA-10 10.2-5 REV 28 11/10 CONSTRUCTION The north, east, and west walls are nonrated, reinforced concrete. The south boundary of this zone consists of the following: concrete block which provides a 1-h fire barrier to zones 0101E, F, G, H; concrete block which provides a 2-h fire barrier to area 0002; and concrete which provides a 3-h fire barrier to area 0024. There is an open hallway on the east side of this zone which accesses zone 0101J. The walls around zones 0101B, C, D are nonrated, partial height concrete. There are five nonrated doors, three of which access zone 0101B and two which access zones 0101C and 0101D. There are four fire-rated Class A doors; one accesses zone 0024C, two access zone 0024D, and one accesses area 1203. There are five fire-rated Class B doors which access areas 1102, 1103, and zones 0002B, 0002A, and 0101E. There is one fire-rated Class C door which accesses zone 0101H. The floor and ceiling are nonrated, reinforced concrete. The ceiling contains numerous smoke venting dampers. There are two stairwells (areas 1102 and 1103) in the north end of this zone. The stairs are enclosed by block walls which provide a 2-h fire barrier. There are smoke dampers in the ceiling of each stairwell.

The main equipment hatch in the northeast corner is open to zone 1101J below. In addition, there are several concrete covered hatches accessing zones 1101J, 1101K, and 1101M below and metal hatches accessing areas 0025 and 1023 below. Nonrated steam blowout panels are located in the east wall, communicating with area 1205 (see exemptions in area 0101). See area 0101 for penetrations.

FIRE PROTECTION This zone is equipped with two water spray systems. Generator bearings are provided with a manually actuated water spray system that is activated by operations personnel upon verification of a fire following a thermostat detector alarm. The reactor feed pump oil conditioner is provided with curbing to contain any oil spills to the immediate vicinity of the conditioner and an automatic water spray suppression system, activated by the dry pilot portion of the system.

Activation of the water spray results in an alarm both locally and in the MCR.

In addition, there is a portable oil emulsion foam generator in the zone and there are hose stations and portable CO2 and dry chemical fire extinguishers located throughout the zone.

CONSEQUENCES OF DESIGN BASIS FIRE A fire on the turbine operating floor would be associated with localized and widely separated concentrations of combustibles. Oil hazards associated with the generator bearings and the reactor feed pump oil conditioner are equipped with automatic or manual water spray systems.

There is no areawide detection; however, a fire may be identified in its early stages by plant personnel. The high ceiling and large separation between concentrations of combustibles preclude flashover. The ceiling smoke vents are expected to open to further dilute any

HNP-FHA-10 10.2-6 REV 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE (cont'd) products of combustion. The available firefighting equipment is adequate to extinguish a fire in this zone. The open hatchways in the floor create a fire propagation possibility to the adjacent zones and areas; however, the absence of any intervening combustibles between this zone and the adjacent zones and areas, the low combustible loading, and substantial construction preclude the propagation of the fire beyond this zone.

Propagation of a fire to other zones in this area or to area 1101 will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-7 REV 28 11/10 FIRE ZONE 0101B This zone is not considered safety related.

DESCRIPTION Unit 1 Main Turbine Deck Area Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11807

AREA 14,586 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A Wood Charcoal None Plastics Plastic, respirators Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR (see text) - Floors, Ceiling or Roof Floor-Concrete; Ceiling-Open

- Fixed Openings OP/0101A, C, D; MH, CH, OH, OS/1101

- Penetrations See area 0101 text - Doors (Fire-rated Class/Zone no.) 3-NR/0101A

HNP-FHA-10 10.2-8 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and are nonrated. The north, south, and east walls are partial height walls. The west wall is the nonrated, reinforced concrete turbine building exterior wall. The ceiling of the zone is open up the turbine building roof. The floor is nonrated, reinforced concrete. There is one nonrated door in the south wall to zone 0101A. There are also two nonrated doors in the north wall accessing zone 0101A. There are several open and covered concrete hatches which access area 1101 below this zone. See area 0101 for penetrations.

FIRE PROTECTION The turbine bearings are provided with a manually actuated water spray system. Thermostats provide an alarm in the MCR and, after verification of a fire, the system can be activated by operations personnel. Manual firefighting equipment in the zone consists of hose stations.

Portable CO2 and dry chemical fire extinguishers are available in adjacent zone 0101A.

CONSEQUENCES OF DESIGN BASIS FIRE The main combustible in this zone is lube oil which is concentrated at the turbine bearings. The turbine bearings are equipped with thermostats, which alarm both locally and in the MCR. Upon verification of a fire, operations personnel will initiate manual actuation of the bearing water spray systems to suppress or control a fire. In the event of a seal or lube oil piping rupture and a subsequent fire, there is a potential threat of fire propagation to the adjacent zone (0101A) and area 1101 below (zones 1101J, 1101K); however, early warning (provided by thermostats, seal or lube oil low pressure alarms) and prompt response by the plant fire brigade are expected to prevent fire propagation. Other combustibles in the zone are limited and widely separated and could potentially result in only small localized fires.

Propagation of a fire to other zones in this area or to area 1101 will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-9 REV 28 11/10 FIRE ZONE 0101C This zone is not considered safety related.

DESCRIPTION Unit 1 Reactor Feed Pump Room A Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11807

AREA 1,260 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 128,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (FC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Floor-Concrete; Ceiling-Open

- Fixed Openings OP/0101A,B,D

- Penetrations See Area 0101 text - Doors (Fire-rated Class/Zone no.) NR/0101A

HNP-FHA-10 10.2-10 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and nonrated. These are partial height walls and the ceiling is open up to the turbine building roof. The floor is nonrated, reinforced concrete. There is one nonrated door in the east wall to zone 0101A. See area 0101 for penetrations.

FIRE PROTECTION This zone is provided with a full coverage automatic water spray suppression system activated by a dry pilot system. Activation of the suppression system results in an alarm both locally and in the MCR. There is no manual firefighting equipment in this zone. A hose station, portable dry chemical extinguishers, and portable CO2 extinguishers are available from the adjacent zone 0101A.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible fire of significant size in this zone is an oil fire resulting from leakage or rupture of the lube oil system. The automatic water spray system provides for prompt extinguishment of such a fire. Actuation of the dry pilot portion of the system results in an alarm both locally and in the MCR which ensures prompt response by the plant fire brigade. The walls surrounding this zone are of sufficient construction to contain the design basis fire. The heated combustion products will leave the zone through the open ceiling. Due to the high ceiling and very large volume of the turbine building along with the smoke dampers in the roof, significant dilution of the hot gases will occur and prevent propagation of the fire outside the zone.

HNP-FHA-10 10.2-11 REV 28 11/10 FIRE ZONE 0101D This zone is not considered safety related.

DESCRIPTION Unit 1 Reactor Feed Pump Room B Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11807

AREA 1,392 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 129,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (FC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR

- Floors, Ceiling or Roof Floor-Concrete; Ceiling-Open

- Fixed Openings OP/0101A,B,C

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101A

HNP-FHA-10 10.2-12 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and nonrated. These are partial height walls and the ceiling is open up to the turbine building roof. The floor is nonrated, reinforced concrete. There is one nonrated door in the east wall to zone 0101A. See area 0101 for penetrations.

FIRE PROTECTION The zone is provided with a full coverage automatic water spray suppression system activated by a dry pilot system. Actuation of either the dry pilot or suppression system results in an alarm both locally and in the MCR. There is no manual firefighting equipment in this zone. A hose station, portable dry chemical extinguishers, and portable CO2 extinguishers are available in the adjacent zone 0101A.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible fire of significant size in this zone is an oil fire resulting from leakage or rupture of the lube oil system. The automatic water spray system provides for prompt extinguishment of such a fire. Actuation of the dry pilot portion of the system results in an alarm both locally and in the MCR which ensures prompt response by the plant fire brigade. The walls surrounding this zone are of sufficient construction to contain the design basis fire. The heated combustion products will leave the zone through the open ceiling. Due to the high ceiling and very large volume of the turbine building, along with the smoke dampers in the roof, significant dilution of the hot gases will occur and prevent propagation of the fire outside the zone.

HNP-FHA-10 10.2-13 REV 28 11/10 FIRE ZONE 0101E This zone is not considered safety related.

DESCRIPTION East Main Control Room Entry Way Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11817

AREA 61 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-B/NR

- Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101A;NR/0101F

HNP-FHA-10 10.2-14 REV 28 11/10 CONSTRUCTION All walls are block and are nonrated. The floor and ceiling are reinforced concrete. There is a nonrated door in the south wall to zone 0101A and a nonrated door in the west wall to zone 0101F. See area 0101 for penetrations.

FIRE PROTECTION No detection or suppression system is provided in this zone; however, it is provided with a portable CO2 fire extinguisher. A hose station is also provided nearby in zone 0101A.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible products. The only fire which is credible for this zone would result from transient combustibles. The negligible combustible loading and substantial construction of the concrete walls preclude the propagation of a fire beyond the boundaries of this zone. The available firefighting equipment in this zone and in adjacent zone 0101A is adequate to extinguish a fire.

HNP-FHA-10 10.2-15 REV 28 11/10 FIRE ZONE 0101F This zone is not considered safety related.

DESCRIPTION Main Control Room Break Area Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11817

AREA 399 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Wood, plywood, paper, clothing, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 41,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers Drychem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-B/NR;S-C/3;E-B/NR,1;W-B/NR

- Floors, Ceiling or Roof Concrete; Concrete/Suspended

- Fixed Openings None

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101E,G

HNP-FHA-10 10.2-16 REV 28 11/10 CONSTRUCTION The south wall is reinforced concrete and is 3-h rated. The north wall, east wall, and west wall are nonrated block walls. The floor and ceiling are nonrated, reinforced concrete. There are two nonrated doors; one in the east wall to zone 0101E and one in the west wall to zone 0101G.

A suspended ceiling is located at approximately el 172 ft. See area 0101 for penetrations.

FIRE PROTECTION This zone is equipped with full coverage heat detection which provides an early warning alarm in the adjacent MCR. Manual firefighting equipment is also provided in the form of a portable dry chemical fire extinguisher.

CONSEQUENCES OF DESIGN BASIS FIRE This zone and the adjacent zones are normally occupied at all times by the MCR operators who include trained members of the plant fire brigade. Detection and suppression should be immediate. Limited combustibles combined with short estimated fire duration should preclude any potential for fire propagation to adjacent zones.

HNP-FHA-10 10.2-17 REV 28 11/10 FIRE ZONE 0101G This zone is not considered safety related.

DESCRIPTION Chart Storage Room and Hallway Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11817

AREA 247 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Paper, clothing, cardboard, files Charcoal None Plastics Plastic, respirators Miscellaneous Rubber, carpet Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 548,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-B/NR;S-C/3;E,W-B/NR

- Floors, Ceiling or Roof Concrete; Concrete/Suspended

- Fixed Openings None

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) A/0024C;2-NR/0101H;NR/0101F

HNP-FHA-10 10.2-18 REV 28 11/10 CONSTRUCTION The south wall is reinforced concrete and 3-h rated. The north, east, and west walls are nonrated block walls. There is a nonrated block wall which separates this zone into two sections. The floor and ceiling are nonrated, reinforced concrete. There is a nonrated door in the east wall to zone 0101F and there are two nonrated doors in the west wall to zone 0101H.

There is one nonrated bulletproof door in series with fire-rated Class A rollup door in the south wall to area 0024. A suspended ceiling is located at approximately el 172 ft. See area 0101 for penetrations.

FIRE PROTECTION This zone has full coverage heat detectors which provide an early warning alarm in the adjacent MCR. The zone contains no automatic suppression system; however, portable dry chemical and CO2 fire extinguishers are available in nearby zones 0101F and 0101E, respectively. Hose stations able to reach this zone are located at the control building freight elevator and at the east turbine building wall immediately outside zone 0101E.

CONSEQUENCES OF DESIGN BASIS FIRE The heat detectors located in this zone are expected to detect the combustion products from an incipient fire and provide early warning in the adjacent MCR to ensure prompt response by the plant fire brigade, members of which are constantly on duty in adjacent zone 0024C. The high combustible loading and nonrated east and west walls present a threat that the design basis fire may propagate to adjacent zones 0101F and 0101H. However, presence of the shift personnel in adjacent zone 0101H and continuous traffic in adjacent zones 0101F and 0024C provides a high probability of detection and suppression of a fire in its early stages. A fire in the tightly stacked Class A materials will develop slowly and ensure ample time for response by the plant fire brigade. The available manual fire equipment is adequate to extinguish the fire.

In addition, propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-19 REV 28 11/10 FIRE ZONE 0101H This zone is not considered safety related.

DESCRIPTION Shift Clerk/Operations Supervisor's Office Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11817

AREA 399 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Plywood, paper, files Charcoal None Plastics Plastic Miscellaneous Rubber, carpet Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 277,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,W-B/NR;S-C/3;E-B/NR

- Floors, Ceiling or Roof Concrete; Concrete/Suspended

- Fixed Openings None

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101A;2-NR/0101G

HNP-FHA-10 10.2-20 REV 28 11/10 CONSTRUCTION The south wall is reinforced concrete and 3-h rated. The north, west, and east walls are block and nonrated. The floor and ceiling are nonrated, reinforced concrete. There are two nonrated doors to zone 0101G and a nonrated door to zone 0101A. This zone has vinyl wall covering and carpet and a suspended ceiling at approximately el 172 ft. See area 0101 for penetrations.

FIRE PROTECTION This zone is equipped with full coverage heat detection which provides an early warning alarm in the adjacent MCR. This zone is not equipped with a manual or automatic suppression system. However, portable CO2 fire extinguishers are provided in adjacent zone 0024C and a hose station is located immediately outside the door of this zone in zone 0101A.

CONSEQUENCES OF DESIGN BASIS FIRE The heat detection located in this zone is expected to detect the combustion products from an incipient fire and provide early warning in the adjacent MCR to ensure prompt response by the plant fire brigade. The high fire loading and nonrated east wall present a threat that the design basis fire may propagate to adjacent zones. However, the continuous presence of the shift personnel in this zone provides a high probability of detection and suppression of a fire in its early stages. The available manual firefighting equipment is adequate to extinguish a fire in this zone.

Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-21 REV 28 11/10 FIRE ZONE 0101I This zone is not considered safety related.

DESCRIPTION Unit 2 Main Turbine Deck Area Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11823

AREA 14,319 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR (see text)

- Floors, Ceiling or Roof Floor-Concrete; Ceiling Open

- Fixed Openings OP/0101J,K,L; MH,CH,OH,OS/2101

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) 3-NR/0101J

HNP-FHA-10 10.2-22 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and nonrated. The north, east and south walls are partial height. The west wall is the nonrated, reinforced concrete turbine building exterior wall. The ceiling in this zone is open up to the turbine building roof. The floor is nonrated, reinforced concrete. The zone contains three nonrated doors which access zone 0101J. There are several open and covered hatches which access area 2101 below. See area 0101 for penetrations.

FIRE PROTECTION The turbine bearings are provided with a manually actuated water spray system. Thermostats provide an alarm in the MCR and, after verification of a fire, the system can be activated by operations personnel. In addition, hose stations are provided in the zone.

CONSEQUENCES OF DESIGN BASIS FIRE The main combustible in this zone is lube oil which is concentrated at the turbine bearings. The turbine bearings are equipped with heat detectors which alarm in the MCR. Upon verification of a fire, operating personnel will initiate manual actuation of the bearing water spray system to suppress or control a fire. In the event of a lube or seal oil piping rupture and subsequent fire, there is a potential for fire propagation to the adjacent zone 0101J and area 2101 below (zones 2101J & 2101K); however, early warning (provided by heat detectors, seal or lube-oil low pressure alarms) and prompt response by the plant fire brigade could prevent fire propagation.

The other combustibles in the zone are limited and widely separated and potentially result in only small localized fires.

Propagation of a fire to other zones in this area, or to area 2101 will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-23 REV 28 11/10 FIRE ZONE 0101J This zone is not considered safety related.

DESCRIPTION Unit 2 Turbine Building Main Floor Area Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11817, H-11823

AREA 25,482 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Wood, plank, clothing, trash Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) Heat det (PC) ionization detectors in the Packaged Electrical & Electronic Control Compartment (PEECC) Building and the Power Conversion Room (PCR) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3;S,W,E-C/NR,C,B/2 at 2102,2103

- Floors, Ceiling, or Roof Concrete

- Fixed Openings OP/0031,0101A,I,K,L;SG,OH,CH/2101; MH/2023;SD/Outside,2102,2103

- Penetrations See Area 0101 text

- Doors (Fire-rated Class/Zone no.) 2-A/2301;A/0024;B/2102,2103;3-NR/0101I; NR/0028,0101K,L

HNP-FHA-10 10.2-24 REV 28 11/10 CONSTRUCTION The east, south, and west walls are reinforced, nonrated concrete turbine building exterior walls.

There is a partial height nonrated, reinforced concrete wall around zones 0101I, 0101K, and 0101L. The north wall borders the MCR and is reinforced concrete and 3-h rated. There is an open passageway which accesses zone 0101A on the east side of this zone. There are five nonrated doors, three accessing zone 0101I and one each accessing zones 0101K and 0101L.

There are two fire-rated Class A doors accessing area 2301. There are two stairwells (areas 2102 and 2103) enclosed by walls constructed partially of block and partially of concrete which provide a 2-h fire barrier. The stairwell ceilings are concrete and are provided with smoke dampers. Access to the stairwells is obtained through a fire-rated Class B door to each. The floor and ceiling are nonrated, reinforced concrete. The ceiling is open up to the turbine building roof and contains numerous smoke venting dampers. There is an open equipment hatch which accesses zone 2101J below. In addition, there are several concrete hatches which access zone 2101J below. A metal hatch accesses area 2023 below. There is a nonrated metal enclosure containing a nonrated door around the stairwell to area 0028. Nonrated steam blowout panels are located in the east wall, communicating with area 2205 (see exemptions in area 0101). See area 0101 for penetrations. FIRE PROTECTION This zone is equipped with a fixed water spray system at the generator bearings. The system is manually actuated by operations personnel upon verification of a fire following a thermostat detector alarm. Activation of the detectors or water spray results in both a local and MCR alarm.

In addition, there are hose stations and portable CO2 and dry chemical fire extinguishers in the zone. A portable oil emulsion foam generator is located in adjacent zone 0101A and is available for use in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE A fire on the turbine operating floor would be associated with localized and widely separated concentrations of combustibles. Oil hazards associated with the generator bearings are equipped with a manual water spray system. There is no areawide detection; however, a fire may be identified in its early stages by plant personnel. The high ceiling and large separation between concentrations of combustibles preclude flashover. The ceiling smoke vents are expected to open to further dilute any products of combustion. The available firefighting equipment is adequate to extinguish a fire in this zone. The open hatchways in the floor create a fire propagation possibility to the adjacent zones and areas; however, the absence of any intervening combustibles between this zone and the adjacent zones and areas, the low

HNP-FHA-10 10.2-25 REV 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE (cont'd) combustible loading and substantial construction preclude the propagation of the fire beyond this zone.

Propagation of a fire to other zones in this area or to area 2101 will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.2-26 REV 28 11/10 FIRE ZONE 0101K This zone is not considered safety related.

DESCRIPTION Unit 2 Reactor Feed Pump A Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11823

AREA 1,383 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 118,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR

- Floors, Ceiling or Roof Floor-Concrete; Ceiling-Open

- Fixed Openings OP/0101I,J,L

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101J

HNP-FHA-10 10.2-27 REV 28 11/10 CONSTRUCTION All the walls are partial height nonrated, reinforced concrete walls. The floor is nonrated, reinforced concrete. The ceiling is open up to the turbine building roof. There is a nonrated door in the east wall to zone 0101J. See area 0101 for penetrations.

FIRE PROTECTION This zone is provided with a partial coverage automatic water spray suppression system activated by a dry pilot system. Activation of the suppression system results in an alarm both in the MCR and locally. There is no manual firefighting equipment in this zone. Hose stations and portable CO2 and dry chemical fire extinguishers are available in adjacent zone 0101J.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible fire of significant size in this zone is an oil fire resulting from leakage or rupture of the lube oil system. The automatic water spray system provides for prompt extinguishment of such a fire. Activation of the dry pilot portion of the system results in an alarm both locally and in the MCR which ensures prompt response by the plant fire brigade. The walls surrounding this zone are of sufficient construction to contain the design basis fire. The heated combustion products will leave the zone through the open ceiling. Due to the high ceiling and very large volume of the turbine building, along with the smoke dampers in the roof, significant dilution of the hot gases will occur and prevent propagation of the fire outside the zone.

HNP-FHA-10 10.2-28 REV 28 11/10 FIRE ZONE 0101L This zone is not considered safety related.

DESCRIPTION Unit 2 Reactor Feed Pump Room B Turbine Building - el 164 ft

DRAWING NUMBER(S) H-11823

AREA 1,308 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 136,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR

- Floors, Ceiling or Roof Floor-Concrete; Ceiling-Open

- Fixed Openings OP/0101I,J,K

- Penetrations See area 0101 text

- Doors (Fire-rated Class/Zone no.) NR/0101J

HNP-FHA-10 10.2-29 REV 28 11/10 CONSTRUCTION All the walls are partial height nonrated, reinforced concrete. The floor is nonrated concrete and the ceiling is open up to the turbine building roof. The floor is nonrated, reinforced concrete.

There is a nonrated door in the east wall to zone 0101J. See area 0101 for penetrations.

FIRE PROTECTION This zone is provided with a partial coverage automatic water spray suppression system activated by a dry pilot system. Activation of the suppression system results in an alarm both in the MCR and locally. There is no manual firefighting equipment in this zone. A hose station and portable CO2 and dry chemical fire extinguishers are available in adjacent zone 0101J.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible fire of significant size in this zone is an oil fire resulting from leakage or rupture of the lube oil system. The automatic water spray system provides for prompt extinguishment of such a fire. Activation of the dry pilot portion of the system results in an alarm both locally and in the MCR which ensures prompt response by the plant fire brigade. The walls surrounding this zone are of sufficient construction to contain the design basis fire. The heated combustion products will leave the zone through the open ceiling. Due to the high ceiling and very large volume of the turbine building, along with the smoke dampers in the roof, significant dilution of the hot gases will occur and prevent propagation of the fire outside the zone.

HNP-FHA-10 10.3-1 REF 28 11/10 FIRE AREA 0201 This area is considered safety related.

DESCRIPTION Reactor Building Refueling Floor Unit 1 and Unit 2 Reactor Buildings-el 228 ft

DRAWING NUMBER(S) H-11829, H-11830, H-11831, H-11835, H-11836, H-11837

AREA 30,710 ft2

COMBUSTIBLES Oil and Grease None Cable Cable insulation Class A Wood, plywood, paper, clothing, trash, rags, desks Charcoal Charcoal Plastics Plastic, respirators Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 27,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3,NR - Floors, Ceiling or Roof Concrete - Fixed Openings SD/Outside;CH,SD/1205,2205;MH/1201,2201; OP/2203 - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/2203;B/1203;NR/1205,2205,Outside

HNP-FHA-10 10.3-2 REF 28 11/10 CONSTRUCTION The boundaries of the area are the reactor building exterior walls which are constructed of prefabricated concrete panels with a minimum thickness of 8 in. The portions of the west wall adjacent to the reactor building stairwells are 3-h rated. A fire-rated Class B door is provided to area 1203 (stairwell). The airlock to the Unit 2 reactor building stairwell on the west side of this area contains a fire-rated Class A door to the stairwell (area 2203) and a nonrated door to the outside. The floor is the airtight refueling deck. The floor is considered an area boundary only for purposes of defining the open, common refueling floor, which is shared by both units, as a common area (see exemptions). The floor area includes the spent-fuel pool, dryer/separator storage pools, etc. The floor contains numerous sealed hatches and a stairwell in each unit, enclosed by nonrated concrete block "doghouses." Each "doghouse" contains a nonrated access door and two tornado vent assemblies in its roof. The roof of this area is concrete and contains numerous tornado vent assemblies. A nonrated vault-type door accesses the outside.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been exempted or evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area contains hose stations and portable CO2 fire extinguishers. It contains no detection or automatic suppression systems.

APPENDIX R EXEMPTIONS Requests for exemption from the section III.G.2 requirement for complete 3-h barriers have been submitted as documented in appendix C of this document for:

- The openings from 0201 to the Unit 2 stairwell, zone 2203I.

- The fire-rated Class B door to the Unit 1 stairwell, zone 1203I.

- The nonrated refueling floor itself.

- The nonrated access stairwell "doghouses."

However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

HNP-FHA-10 10.3-3 REF 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE This area contains an insignificant loading of combustible materials, but the design basis fire for the area is conservatively assumed to result in the loss of the safe shutdown circuits contained in the area. The low fire loading results in a maximum fire duration of less than 5 min. The floor itself is designated as a nonrated area boundary for the purpose of separating the common refuel floor from the balance of the Unit 1 and Unit 2 reactor buildings. The limiting propagation path for a design basis fire from another fire area adjacent to the floor is the nonrated "doghouses" enclosing the access stairwells. The limiting design basis fire for the doghouses would occur in area 1205 and is approximately 30 min in duration. The doghouses are constructed to easily withstand this exposure without loss of structural integrity. Any limited propagation of combustion products through the doghouses would be sufficiently diluted in the large volume of the refuel floor that no significant hazard exists. Therefore, the substantial construction of the reactor building exterior walls and roof and the refuel floor preclude the propagation of the design basis fire beyond the boundaries of this area. The available manual firefighting equipment in the area is adequate to extinguish any fires which might occur.

The area contains radioactive materials which, if involved in the design basis fire, are expected to remain confined to the area due to the substantial construction. No significant radioactive releases are considered credible for a fire in this area. A fire in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.3-4 REF 28 11/10 FIRE ZONE 0201A This zone is considered safety related.

DESCRIPTION Unit 1 Refueling Floor Unit 1 Reactor Building - el 228 ft

DRAWING NUMBER(S) H-11831

AREA 15,355 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Wood, plywood, paper, clothing, trash, rags, desks Charcoal None Plastics Plastic, respirators Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls E,N-C/NR;S-Open;W-C/3,NR,B/NR Wall Enclosing 1205Y - Floors, Ceiling or Roof Concrete

- Fixed Openings MH/1201;CH,SD/1205;OP/0201B;SD/Outside

- Penetrations See area 0201 text - Doors (Fire-rated Class/Zone no.) B/1203;NR/1205

HNP-FHA-10 10.3-5 REF 28 11/10 CONSTRUCTION The north, east, and west walls are prefabricated concrete panel reactor building exterior walls and nonrated, except the west wall from 5 ft south of column line R11 to column line R13 (adjacent to stairwell zone 1203I), which is 3-h rated. The south zone boundary is open to zone 0201B, the Unit 2 refueling floor. The floor is an airtight boundary constructed of reinforced concrete with closed concrete hatches to zones 1205Y, 1205U, and 1205X. There is a stairwell down to zone 1205Y, which is enclosed by a concrete block doghouse, containing a nonrated access door and tornado vent assemblies in the ceiling. The ceiling of this zone is reinforced concrete and contains tornado vent assemblies. There is a fire-rated Class B door in the west wall to zone 1203I. See area 0201 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or automatic suppression systems. This zone is provided with hose stations and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible loading of combustible materials located in widely separated concentrations. The low fire loading, large dilution volume, and substantial construction preclude propagation of the design basis fire to any other zones or areas except adjacent zone 0201B which contains no safe shutdown equipment or circuits. The manual firefighting equipment in this zone is sufficient to extinguish the design basis fire.

HNP-FHA-10 10.3-6 REF 28 11/10 FIRE ZONE 0201B This zone is considered safety related.

DESCRIPTION Refueling Floor Unit 2 Reactor Building - el 228 ft

DRAWING NUMBER(S) H-11837

AREA 15,355 ft2

COMBUSTIBLES Oil and Grease None Cable Cable insulation Class A Wood, plywood, clothing, trash, rags, desks Charcoal Charcoal Plastics Plastic, respirators Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 29,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-Open;E,S-C/NR;W-C/3,NR, B/NR Wall Enclosing 2205Y - Floors, Ceiling, or Roof Concrete

- Fixed Openings SD/Outside;OP/0201A,2203;CH,SD/2205;MH/2201

- Penetrations See area 0201 text - Doors (Fire-rated Class/Zone no.) NR/2205, Outside

HNP-FHA-10 10.3-7 REF 28 11/10 CONSTRUCTION The east, south, and part of the west wall are prefabricated concrete panel reactor building exterior walls and are nonrated. The remaining part of the west wall adjacent to the stairs (zone 2203I) is 3-h rated. There are large openings in the wall between this zone and zone 2203I (see exemptions in area 0201). The north zone boundary is open to zone 0201A, the Unit 1 refueling floor. The airlock to the Unit 2 reactor building stairwell on the west side of this zone contains a fire-rated Class A door to the stairwell (area 2203) and a nonrated door to the outside. The floor is an airtight boundary constructed of reinforced concrete with closed concrete hatches to zones 2205Y, 2205U, and 2205X. There is a stairwell down to zone 2205Y, which is enclosed by a concrete block doghouse containing a nonrated access door and tornado vent assemblies in the ceiling. The ceiling of this zone is reinforced concrete and also contains tornado vent assemblies. See area 0201 for penetrations.

FIRE PROTECTION The reactor building refueling floor is not equipped with any detection or automatic suppression systems. However, hose stations and CO2 fire extinguishers are provided in this zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible loading of combustible materials located in widely separated concentrations. The low fire loading, large dilution volume, and substantial construction preclude propagation of the design basis fire to any areas or zones other than 0201A, which contains only Unit 1 path 1 safe shutdown circuits. The manual firefighting equipment in this zone is adequate to extinguish the design basis fire.

HNP-FHA-10 10.4-1 REV 28 11/10 FIRE AREA 0401 This area is not considered safety related.

DESCRIPTION Diesel Building Hallway Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,660 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable None Class A None Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,E,S-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/1403,1407,1411,2403,2407;A/1401,1405,1409, 2401,2405;2-NR/Outside

HNP-FHA-10 10.4-2 REV 28 11/10 CONSTRUCTION All the walls of the diesel generator building hallway are nonrated, reinforced concrete except the west wall which is reinforced concrete and a 3-h fire barrier. There are two nonrated fenced doors in the north and west walls of this area. There are ten fire-rated class A double doors in the west wall to provide access to the day tank rooms and the diesel generator rooms. Large fire-rated class A rollup doors are also provided into each engine room. Ventilation ducts with 3-h rated dampers designed to close automatically on CO2 system actuation are provided into each day tank and engine room.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION No automatic or manual suppression system is provided in this area. However, portable dry chemical fire extinguishers are located in this area and portable CO2 and dry chemical fire extinguishers are available from the adjacent diesel generator room areas. Hydrants are located immediately to the east and west of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains an insignificant loading of combustible materials. The negligible loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this area. The available firefighting equipment in this area and in the adjacent diesel rooms is adequate to extinguish any fires which might occur.

A fire in this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-10 10.5-1 REV 30 9/12 FIRE AREA 0501 This area is considered safety related.

DESCRIPTION Intake Structure North Boundary of Plant Site

DRAWING NUMBER(S) H-11847

AREA 3,879 ft2

COMBUSTIBLES Oil and Grease Grease, lube oil Cable None Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 8,541 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Thermal det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Floor-Concrete/Grating;Ceiling-Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-NR/Outside

HNP-FHA-10 10.5-2 REV 30 9/12 CONSTRUCTION The intake structure is constructed of nonrated, reinforced concrete with a grated "ceiling" over the strainer pit portion on the south side of the area. There are also grating sections between the main floor and the pump suction area. There are open penetrations throughout the walls and floors, particularly the north and south walls.

There is a nonrated door located in the east wall and in the west wall. Steel spray barriers are installed between the plant service water and residual heat removal service water (RHRSW) sections of the building, between the Unit 1 and Unit 2 RHRSW sections and between each redundant set of pumps. This ensures that, in the event of a pump fire, the fixed automatic suppression system will cause no water damage to any adjacent, redundant pumps. Concrete curbs have been installed around each redundant set of RHRSW pumps for each unit to contain any oil spills to the localized area around each pump set. This area is separated by greater than 50 ft from all other areas of the plant and thus does not present an exposure fire hazard to any other areas. There are therefore no penetrations to adjacent areas.

FIRE PROTECTION Each of the 16 large pumps in this area is equipped with a fixed automatic water spray system, directly over the pump motors. As described above, spray barriers are installed between redundant paths of each unit's pumps to prevent water damage to the adjacent pumps in the event of a pump fire or inadvertent spray actuation. Thermal detectors are installed throughout the interior portion of the area, as are portable CO2 fire extinguishers and hose stations for manual firefighting.

APPENDIX R EXEMPTIONS An exemption from the requirements of Section III.G.2 of Appendix R has been granted for this area per the April 1984 NRC Safety Evaluation Report based on existing fire protection and on a low combustible loading.

CONSEQUENCES OF DESIGN BASIS FIRE The technical requirements of Section III.G.2 are not met in this area because of the absence of an areawide automatic fire suppression system. In addition, the fire barriers between the pumps and MCCs are not 1-h fire rated.

The fire protection requirements of Section III.G of Appendix R represent an aggregate, comprised of active and passive components. They act synergistically to achieve an acceptable level of fire safety. In this area, active protection has been provided in the form of a complete thermal detection system. This system will provide reasonable assurance of early fire awareness and response by operating personnel and the plant fire brigade.

HNP-FHA-10 10.5-3 REV 30 9/12 CONSEQUENCES OF DESIGN BASIS FIRE (continued)

Additional protection is provided in the river intake structure by the water spray system over the pump motors. Passive protection is achieved by physical separation of redundant divisions by open spaces without intervening combustibles, by partial height barriers to protect the safety components, or by complete 1-h fire rated barriers.

The fire loading in this location is low. Storage of any transient combustible materials in this area is procedurally prohibited. The primary combustibles are cable insulation in trays and oil in pump sumps. The majority of the cables have been provided with fire resistive wrap, specifically for the purpose of reducing the combustible loading in this area. Ignition of the oil in closed sumps is extremely unlikely. If the combustibles were totally consumed, they would produce a fire which corresponds to a fire severity of less than 15 min; but this fire would be unlikely to occur because of the existing level of fire protection.

Therefore, a fire, if one should occur, would not be significant and would not breach the protection provided by the physical fire barriers until the fire self-extinguished or was suppressed by the plant fire brigade. Hence, a fire in this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-10 10.6-1 REV 28 11/10 FIRE AREA 0601 This area is not considered safety related.

DESCRIPTION Waste Gas Treatment Building East of the Power Block - el 106 ft

DRAWING NUMBER(S) H-11855

AREA 8,640 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A Wood, clothing, trash, cardboard, rags Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 151,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR

- Floors, Ceiling, or Roof Concrete

- Fixed Openings CH/Outside

- Penetrations See text

- Doors (Fire-rated Class/Zone no.) 3-NR/Outside

HNP-FHA-10 10.6-2 REV 28 11/10 CONSTRUCTION The waste gas treatment building is constructed of solid, reinforced concrete. The exterior walls are typically a minimum of 4 ft thick, except the portion of the west wall in the operating and access room, which is approximately 3 ft thick. All walls are nonrated but contain essentially no penetrations. The floor is concrete base slab, and the roof is reinforced, nonrated concrete.

Three building access doors are provided, all nonrated in each of the north, west, and south walls. Since this area is not important to safe shutdown and is located away from any other areas, penetrations are not sealed.

FIRE PROTECTION This area contains no automatic suppression or detection systems. Manual firefighting equipment in this area includes hose stations, portable CO2 fire extinguishers, and portable dry chemical fire extinguishers throughout the area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is assumed to result in the loss of all equipment in the building. However, there is no safe shutdown equipment in the area. The exceptionally substantial construction of the building is expected to contain the design basis fire to this area.

If propagation outside of the area did occur, the only other plant area within 50 ft of the building is the plant stack. The stack is approximately 40 ft away with few intervening combustibles and also contains no safe shutdown equipment. Thus, the design basis fire for this area will not have an adverse effect on the ability to safely shut down either unit or result in a significant release of radioactivity. In addition, it is expected that, if a fire did occur in the building, the plant operators would receive high temperature alarms in the main control room (MCR) for the various waste gas streams. Once the fire was detected in this way, prompt response by the plant fire brigade, using the available manual firefighting equipment, would quickly extinguish the fire.

HNP-FHA-10 10.6-3 REV 28 11/10 FIRE ZONE 0601A This zone is not considered safety related.

DESCRIPTION Waste Gas Treatment Working Floors East of the Power Block - el 106 ft and 127 ft

DRAWING NUMBER(S) H-11855

AREA 6,250 ft2

COMBUSTIBLES Oil and Grease Lube oil Cable Cable insulation Class A Wood, clothing, trash, cardboard, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 47,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings None

- Penetrations See area 0601 text - Doors (Fire-rated Class/Zone no.) 3-NR/Outside;NR/0601B,C

HNP-FHA-10 10.6-4 REV 28 11/10 CONSTRUCTION The walls, floor, and ceiling of the zone are constructed of reinforced concrete of substantial thickness (typically 3 ft). Interior walls are similar but contain open floor and wall penetrations.

The walls surrounding the charcoal adsorber rooms (zones 0601B and 0601C) are approximately 4 ft thick and contain very limited penetrations. The roof contains numerous equipment hatches closed with concrete hatch covers. The interior doors to zones 0601B, 0601C, and the building access doors located in the north, west, and south walls are nonrated.

See area 0601 for penetrations.

FIRE PROTECTION This zone contains hose stations, portable CO2 fire extinguishers, and portable dry chemical fire extinguishers. No automatic suppression or detection systems are contained in the zone.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this zone primarily involves cable insulation which is predominately IEEE-383 qualified. The other combustible materials are concentrated in widely separated sections of the zone. The design basis fire is, therefore, expected to develop slowly and propagation from room to room is unlikely. Since no combustibles are concentrated near the adsorber room walls (the walls are of substantial construction with limited penetrations and the primary combustible in the adsorber rooms is charcoal contained in steel vessels), the design basis fire is not expected to propagate to the other zones of area 0601. Although the zone contains no detection system, it is expected that the MCR operators will become aware of any fire in this zone via high temperature alarms for the various waste gas streams routed through the zone. Detection of the fire in this way will result in prompt response to and extinguishment of the fire by the plant fire brigade using the available manual firefighting equipment.

HNP-FHA-10 10.6-5 REV 28 11/10 FIRE ZONE 0601B This zone is not considered safety related.

DESCRIPTION Unit 1 Waste Gas Charcoal Adsorber Waste Gas Treatment Building - el 106 ft

DRAWING NUMBER(S) H-11855

AREA 1,195 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Wood Charcoal Charcoal Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 422,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 0601 text - Doors (Fire-rated Class/Zone no.) NR/0601A

HNP-FHA-10 10.6-6 REV 28 11/10 CONSTRUCTION This zone is constructed of reinforced, nonrated concrete, approximately 4 ft thick, with very limited penetrations. The floor is concrete base slab and the ceiling is reinforced concrete with concrete covered hatches for equipment removal. A nonrated door, enclosed in a concrete entranceway, provides access to the zone. See area 0601 for penetrations.

FIRE PROTECTION There is no fire protection equipment in this zone; however, manual firefighting equipment is located in adjacent zone 0601A.

CONSEQUENCES OF DESIGN BASIS FIRE The probability of ignition of the charcoal in the gas adsorber vessels is low since ignition sources exterior to the vessel must be of high enough energy to breach the steel vessel walls and high energy sources are not normally in this zone. A mechanistic self ignition of the charcoal caused by radioactive decay is not likely; however, assuming ignition, the rate of heat release would be low due to the burning characteristics of charcoal. There are six vessels in the zone. Full involvement of the charcoal can occur only by passing from one vessel to another in series. Each vessel houses sufficient charcoal to sustain a fire of approximately 1-h severity per the standard time-temperature curve. This exposure is not likely to breach the steel vessels. If a rupture of a vessel were to occur, the substantial construction enclosing the zone would preclude propagation to other zones. The ignition of the charcoal would result in a high temperature alarm condition for various waste gas streams. Action by the plant fire brigade could include isolation of the affected vessels by closing valves resulting in smothering the fire (preferred) or the introduction of water into the vessel to extinguish the fire.

HNP-FHA-10 10.6-7 REV 28 11/10 FIRE ZONE 0601C This zone is not considered safety related.

DESCRIPTION Unit 2 Waste Gas Charcoal Adsorber Waste Gas Treatment Building - el 106 ft

DRAWING NUMBER(S) H-11855

AREA 1,195 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Wood Charcoal Charcoal Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 422,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 0601 text - Doors (Fire-rated Class/Zone no.) NR/0601A

HNP-FHA-10 10.6-8 REV 28 11/10 CONSTRUCTION This zone is constructed of reinforced, nonrated concrete, approximately 4 ft thick, with very limited penetrations. The floor is concrete base slab and the ceiling is reinforced concrete with concrete covered hatches for equipment removal. A nonrated door enclosed in a concrete entranceway provides access to the zone. See area 0601 for penetrations.

FIRE PROTECTION There is no fire protection equipment in this zone, however, manual firefighting equipment is located in adjacent zone 0601A.

CONSEQUENCES OF DESIGN BASIS FIRE The probability of ignition of the charcoal in the gas adsorber vessels is low since ignition sources exterior to the vessel must be of high enough energy to breach the steel vessel walls and high energy sources are not normally in this zone. A mechanistic self ignition of the charcoal caused by radioactive decay is not likely; however, assuming ignition, the rate of heat release would be low due to the burning characteristics of charcoal. There are 6 vessels in the zone. Full involvement of the charcoal can occur only by passing from one vessel to another in series. Each vessel houses sufficient charcoal to sustain a fire of approximately 1-h severity per the standard time-temperature curve. This exposure is not likely to breach the steel vessels. If a rupture of a vessel were to occur, the substantial construction enclosing the zone would preclude propagation to other zones. The ignition of the charcoal would result in a high temperature alarm condition for various waste gas streams. Action by the plant fire brigade could include isolation of the affected vessels by closing valves resulting in smothering the fire (preferred) or the introduction of water into the vessel to extinguish the fire.

HNP-FHA-10 10.6-9 REV 28 11/10 FIRE AREA 0602 This area is not considered safety related.

DESCRIPTION Main Stack East of the Power Block - el 120 ft

DRAWING NUMBER(S) H-11802

AREA 1,220 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A Clothing, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/Outside

- Penetrations See text - Doors (Fire-rated Class/Zone #) 3-NR/Outside

HNP-FHA-10 10.6-10 REV 28 11/10 CONSTRUCTION The walls are all nonrated, reinforced concrete. The floors at el 120 ft, 135 ft, and 150 ft are nonrated, reinforced concrete. A large nonrated rolling door is located in the west wall at el 120 ft. Open hatches on this elevation access the after filter area below the 120-ft floor. A nonrated entry door is provided in the south wall at the 120-ft el and in the east wall at the 135-ft el.

Airtight hatches access the 150-ft shield roof from the 135-ft el. Since this area is not important to safe shutdown and is located away from any other plant areas, penetrations are not sealed.

FIRE PROTECTION Portable CO2 fire extinguishers are located in this area. There are no automatic detection or suppression systems in this area. Yard hydrants are available near the area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible combustible loading and the substantial, nonrated construction of the main stack structure, the design basis fire for this area is expected to remain confined to the area.

The design basis fire is assumed to result in the loss of the equipment in the stack, but will not affect any other plant areas due to the large (Greater than 40 ft) separation of this area from other areas. The design basis fire for this area will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-10 10.6-11 REV 28 11/10 FIRE AREA 0603 This area is not considered safety related.

DESCRIPTION Low Level Radwaste Facility Southeast Corner of Site

DRAWING NUMBER(S) H-11802

AREA 16,400 ft2

COMBUSTIBLES Oil and Grease Grease Cable None Class A Wood, paper, cardboard, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber, solvent Miscellaneous Gases Acetylene

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Dry Pipe (FC) (see section 7.0)

Hose Stations None - Hydrant to east of bldg Portable Extinguishers CO2; Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/Outside

- Penetrations See text - Doors (Fire-rated Class/Zone no.) 2-NR/Outside

HNP-FHA-10 10.6-12 REV 28 11/10 CONSTRUCTION The low level radwaste facility is constructed with nonrated, reinforced concrete walls approximately 8 in thick. The floor is nonrated, reinforced concrete slab and the roof is constructed of precast concrete "T" panels equipped with ventilation dampers constructed of plastic over a wood frame. Large rollup, nonrated doors in the northeast and southeast corners of the building provide access to the outdoors. Since this area is not important to safe shutdown and is located away from any other plant areas, penetrations are not sealed.

FIRE PROTECTION This area is equipped with a full coverage automatic dry pipe sprinkler system. In addition, dry chemical and portable CO2 fire extinguishers and a fire hydrant, located outside the building, are provided for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no Unit 1 or Unit 2 safe shutdown equipment and does not present a fire exposure hazard to any other plant areas. A fire in this area may involve the release of small amounts of radioactive material if the building perimeter was breached, due to surface contamination of the combustible contents. However, the automatic suppression system is expected to quickly extinguish any fire which may occur. A fire for this area is, therefore, unlikely to breach the building perimeter and will not affect the ability to achieve safe shutdown.

HNP-FHA-10 10.7-1 REV 28 11/10 FIRE AREA 0702 This area is not considered safety related.

DESCRIPTION Fire Pump House West Area Fire Pump House - el 128 ft

DRAWING NUMBER(S) H-11848

AREA 950 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None - Hydrants nearby Portable Extinguishers CO2; Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,W-S/NR;E-B/2

- Floors, Ceiling or Roof Floor-Concrete; Ceiling-Steel

- Fixed Openings N/A

- Penetrations See text

- Doors (Fire-rated Class/Zone #) A/0703;2-NR/Outside

HNP-FHA-10 10.7-2 REV 28 11/10 CONSTRUCTION All area walls are nonrated sheet metal, except the east wall which is block and 2-h rated. The ceiling is nonrated sheet metal. The floor is nonrated concrete slab. There are two nonrated doors, one in each the north and west walls accessing the outside. There is a rollup, fire-rated Class A door in the east wall to area 0703.

Penetrations in the boundary between this area and area 0703 are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with a full coverage automatic wet pipe suppression system. Portable CO2 fire extinguishers are located in this area. In addition, portable dry chemical extinguishers are located in adjacent area 0703 and a fire hydrant is located to the south of the area, by the fire protection water tanks.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains a negligible combustible loading. Propagation of the design basis fire beyond the area boundaries is, therefore, not credible. Actuation of the automatic suppression system in this area will result in both local and MCR alarms to ensure prompt response by the plant fire brigade. The available automatic suppression system or manual firefighting equipment is adequate to extinguish the fire.

A design basis fire in this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-10 10.7-3 REV 28 11/10 FIRE ZONE 0702A This zone is not considered safety related.

DESCRIPTION Fire Pump House - Water Pump Room Fire Pump House - el 130 ft

DRAWING NUMBER(S) H-11848

AREA 392 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,W-S/NR;E-B/NR - Floors, Ceiling or Roof Floor-Concrete; Ceiling-Steel

- Fixed Openings OP/0702B

- Penetrations See area 0702 text - Doors (Fire-rated Class/Zone #) NR/0702B,Outside

HNP-FHA-10 10.7-4 REV 28 11/10 CONSTRUCTION The north, south, and west walls are nonrated sheet metal walls. The east wall of this zone is concrete block, open at the top to adjacent zone 0702B, and is nonrated. There are nonrated doors in the east and west walls communicating with zone 0702B and the outside, respectively.

Two windows are provided in the north and west wall. The floor is nonrated, reinforced concrete slab and the ceiling is nonrated sheet metal. See area 0702 for penetrations.

FIRE PROTECTION This zone is equipped with an automatic wet pipe sprinkler system. A portable CO2 fire extinguisher is located this zone. There is no detection system in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE The only fire postulated for this zone would involve a procedurally controlled amount of transient combustibles. The available manual firefighting equipment or automatic suppression system is adequate to extinguish any fire which may occur as a result of the introduction of transient combustibles to this zone.

HNP-FHA-10 10.7-5 REV 28 11/10 FIRE ZONE 0702B This zone is not considered safety related.

DESCRIPTION Fire Pump House - West Fire Pump Room Fire Pump House - el 130 ft

DRAWING NUMBER(S) H-11848

AREA 588 ft2

COMBUSTIBLES Oil and Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S-S/NR;W-B/NR;E-B/2 - Floors, Ceiling or Roof Floor-Concrete; Ceiling-Steel

- Fixed Openings OP/Outside,0702A

- Penetrations See area 0702 text - Doors (Fire-rated Class/Zone #) A/0703;NR/Outside,0702A

HNP-FHA-10 10.7-6 REV 28 11/10 CONSTRUCTION The north and south walls of this zone are constructed of nonrated sheet metal. The east and west walls are concrete block walls. The west wall is nonrated and open at the top to adjacent zone 0702A. The east wall is 2-h rated and contains a fire-rated Class A rolling fire door to adjacent area 0703. A double nonrated door in the north wall and nonrated door in the west wall provide access to the outside and to zone 0702A, respectively. The floor is nonrated, reinforced concrete slab. The ceiling is nonrated sheet metal. See area 0702 for penetrations.

FIRE PROTECTION This zone is equipped with an automatic wet pipe sprinkler system and portable CO2 fire extinguisher. There is no detection system in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only significant fire postulated would be as a result of the introduction of procedurally controlled transient combustibles. The available suppression is adequate to extinguish any fire which may occur.

The extremely low fire loading and automatic sprinkler system preclude propagation of a fire beyond the boundaries of this zone.

HNP-FHA-10 10.7-7 REV 28 11/10 FIRE AREA 0703 This area is not considered safety related.

DESCRIPTION Fire Pump House - Central Fire Pump Room Fire Pump House - el 130 ft

DRAWING NUMBER(S) H-11848

AREA 324 ft2

COMBUSTIBLES Oil and Grease Diesel fuel, lube oil Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 278,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S-S/NR;E,W-B/2 - Floors, Ceiling or Roof Floor-Concrete; Ceiling-Steel

- Fixed Openings None

- Penetrations See text - Doors (Fire-rated Class/Zone #) A/0702,0704

HNP-FHA-10 10.7-8 REV 28 11/10 CONSTRUCTION The north and south walls of this area are constructed of nonrated sheet metal. The east and west walls are 2-h rated block fire barriers. A window is provided in the north wall. A fire-rated Class A rolling door is provided in each of the east and west walls to areas 0704 and 0702, respectively. The floor is nonrated, reinforced concrete slab and the ceiling is nonrated sheet metal.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with a full coverage wet pipe suppression system and a portable dry chemical fire extinguisher. No automatic detection system is provided in this area. Manual firefighting equipment is also available in the adjacent areas and a yard fire hydrant is available to the south of the area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is postulated to be a result of catastrophic failure of the diesel-driven fire pump. It conservatively assumes the involvement of the entire inventory of the diesel fuel oil tank (which is located outside this building). Since a fire of this type would not have an incipient stage, no early warning detection system is provided. Actuation of the full coverage wet pipe sprinkler system will provide MCR alarms to ensure prompt response by the plant fire brigade. The suppression system, along with the available manual firefighting equipment, is adequate to extinguish the fire. The fire barriers between fire pump trains preclude fire propagation damage to more than one train of fire pumps. A fire in this area will not affect the ability to achieve safe shutdown or result in any radioactive release.

HNP-FHA-10 10.7-9 REV 28 11/10 FIRE AREA 0704 This area is not considered safety related.

DESCRIPTION East Fire Pump Room Fire Pump House - el 130 ft

DRAWING NUMBER(S) H-11848

AREA 510 ft2

COMBUSTIBLES Oil and Grease Diesel fuel, lube oil Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 84,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-S/NR;W-B/2

- Floors, Ceiling or Roof Floor-Concrete; Ceiling-Steel

- Fixed Openings None

- Penetrations See text

- Doors (Fire-rated Class/Zone #) A/0703;NR/Outside

HNP-FHA-10 10.7-10 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this area are nonrated sheet metal. The west wall is a 2-h-rated block wall separating this area from area 0703. A fire-rated Class A rolling door is provided in the west wall. A nonrated door in the east wall allows access to the outside. The floor is nonrated concrete slab and the ceiling is nonrated sheet metal.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with a full coverage, wet pipe sprinkler system. No detection system is provided in the zone. A portable dry chemical fire extinguisher is located in this area for manual firefighting. Additional portable fire extinguishers are located in the adjacent areas and a yard fire hydrant is available to the south of the area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is postulated to be a result of catastrophic failure of the diesel-driven fire pump. It conservatively assumes the involvement of the entire inventory of the diesel fuel oil tank (which is located outside this building). Since a fire of this type would not have an incipient stage, no early warning detection system is provided. Actuation of the full coverage wet pipe sprinkler system will provide MCR alarms to ensure prompt response by the plant fire brigade. The suppression system, along with the available manual firefighting equipment is adequate to extinguish the fire. The fire barriers between fire pump trains preclude fire propagation damage to more than one of the fire pumps. A fire in this area will not affect the ability to achieve safe shutdown or result in any radioactive release.

11.0 Unit 1 Areas Fire Hazard Analysis HNP-FHA-11 11.1-1 REV 31 9/13 FIRE AREA 1003 This area is considered safety related.

DESCRIPTION Oil Storage Tank Room Control Building - el 112 ft2

DRAWING NUMBER(S) H-11812

AREA 648 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 5,170,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Deluge (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E, W-C/3; S-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-11 11.1-2 REV 31 9/13 CONSTRUCTION The north, south and west walls are 3-h-rated, reinforced concrete. The east wall is 3-h-rated block and contains a doorway to area 0001 with fire-rated Class A sliding fire doors both on the inside and outside of the wall. The bottom of the door opening is approximately 5 ft above floor level to ensure that any oil spills are contained within the area. The floor is nonrated, reinforced concrete slab. The ceiling is 3-h-rated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with a full coverage, automatic deluge suppression system activated by the dry pilot portion of the system. Activation of the deluge system will result in both local and main control room (MCR) alarms. This area contains no manual firefighting equipment.

However, portable CO2 and dry chemical extinguishers, a hose station, and a portable oil emulsion foam unit are available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The only significant fire which can be postulated for this area would be as a result of the rupture of the oil storage tank or piping. Such a fire would not have an incipient stage, thus an early warning detection system is not provided. The full coverage deluge system provides for rapid extinguishment of any fire which may occur. The fire would be oxygen limited, which would retard the rate of combustion until extinguishment. Rapid response of the plant fire brigade would be expected to protect sensitive equipment outside the fire area. The rated walls will contain the fire until the fire can be extinguished.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radiation.

HNP-FHA-11 11.1-3 REV 31 9/13 FIRE AREA 1004 This area is considered safety related.

DESCRIPTION Station Battery Room 1A Control Building - el 112 ft

DRAWING NUMBER(S) H-11811, H-11812

AREA 766 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) WX/0001

HNP-FHA-11 11.1-4 REV 31 9/13 CONSTRUCTION

The north wall is reinforced concrete and is 3-h rated. The south, east, and west walls are block and are 3-h rated. The floor is reinforced concrete base slab and the ceiling is 3-h-rated, reinforced concrete. There is a nonrated watertight door in the south wall to area 0001 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. There is no automatic suppression system or manual firefighting equipment in this area. There are hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0001.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for a complete 3-h-rated barrier, was granted for the nonrated, watertight door by the April 1984 NRC Safety Evaluation Report (SER).

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area would consist of plastic battery cases. Hydrogen generated by the batteries is maintained at insignificant levels by the ventilation system.

See calculation 1380-027-C009 in appendix L of this document for further details. The smoke detectors will alarm both in the MCR and locally to ensure prompt response by the plant fire brigade. The rated walls and substantial door construction, along with the available manual firefighting equipment from adjacent area 0001, preclude the propagation of this fire to other areas.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-5 REV 31 9/13 FIRE AREA 1005 This area is considered safety related.

DESCRIPTION Station Battery Room 1B Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 828 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C, B/3; S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) WX/0001

HNP-FHA-11 11.1-6 REV 31 9/13 CONSTRUCTION The north wall is partially reinforced concrete and partially block and is 3-h rated. The south, east and west walls are block with a 3-h rating. The floor is nonrated, reinforced concrete base slab. The ceiling is 3-h-rated, reinforced concrete. There is a nonrated watertight door in the south wall to area 0001 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. There is no automatic suppression system or manual firefighting equipment in this area. However, there are portable CO2 and dry chemical fire extinguishers and hose stations available to this area from adjacent areas 0001 and 0007.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h-rated barriers was granted for the nonrated, watertight door per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area would involve primarily plastic battery cases and cable insulation. Hydrogen generated by the batteries is maintained at insignificant concentrations by the dedicated ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. The installed smoke detectors are expected to provide early fire warning both to the MCR and locally to ensure prompt response by the plant fire brigade. The rated walls and substantial door construction, along with the available firefighting equipment preclude propagation of a fire beyond the area boundaries.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-7 REV 31 9/13 FIRE AREA 1006 This area is considered safety related.

DESCRIPTION Unit 1 Water Analysis Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 659 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper Charcoal None Plastics Plastic, PVC Miscellaneous Rubber Miscellaneous Gases Dimethylamine

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 59,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S, E-B/3, N, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0007A

HNP-FHA-11 11.1-8 REV 31 9/13 CONSTRUCTION The walls of this area are constructed of concrete block. The north, west, south, and east walls are 3-h rated. A 3-h-rated door to zone 0007A is provided in the east wall.

The floor is reinforced concrete base slab and the ceiling is 3-h-rated, reinforced concrete. Penetrations in the area boundaries are equal to or greater than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area contains no suppression or detection systems. Portable CO2 fire extinguishers and a hose station are located in the hall outside this area (zone 0007A).

CONSEQUENCES OF DESIGN BASIS FIRE The primary combustible in this area is cable insulation which is predominantly IEEE-383 qualified. The design basis fire for this zone is, therefore, expected to develop slowly.

Propagation of the design basis fire from this area to zone 0007A is unlikely due to the rated walls with sealed penetrations. If propagation occurs, the fire is expected to be rapidly detected by the detection system in zone 0007A (smoke and linear thermal detection) extinguished by the plant fire brigade using the manual firefighting equipment in zone 0007A.

HNP-FHA-11 11.1-9 REV 31 9/13 FIRE AREA 1008 This area is considered safety related.

DESCRIPTION Unit 1 AC Inverter Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 406 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-11 11.1-10 REV 31 9/13 CONSTRUCTION All walls are block and are 3-h rated. The ceiling is reinforced concrete and 3-h rated.

The floor is nonrated, reinforced concrete base slab. There is a fire-rated Class A door in the north wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. There is no automatic suppression coverage or manual firefighting equipment in this area. However, hose stations and portable CO2 and dry chemical fire extinguishers are available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The available smoke detectors in this area are expected to provide an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade.

The low fire loading, rated construction, and available manual firefighting equipment located in area 0001 preclude propagation of a fire to adjacent areas.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-11 REV 31 9/13 FIRE AREA 1009 This area is considered safety related.

DESCRIPTION RPS Battery Room South Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 130 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-11 11.1-12 REV 31 9/13 CONSTRUCTION All the walls are block and 3-h rated. The ceiling is concrete and 3-h rated. The floor is nonrated, reinforced concrete base slab. There is a fire-rated Class A door in the west wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. This area has no automatic suppression system or manual firefighting equipment. There are, however, hose stations and portable CO2 and dry chemical fire extinguishers available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible quantity of fixed combustibles, a significant fire in this area is not considered credible. Hydrogen generated by the batteries is maintained at insignificant concentrations by the dedicated ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. Should a fire occur, smoke detectors will provide an early warning alarm both locally and to the MCR to ensure prompt response by the plant fire brigade. The low fire loading, rated construction, and the available firefighting equipment in area 0001 preclude the propagation of a fire outside area 1009.

A fire in this area will not affect the capability to achieve safe shutdown or result in the significant release of radioactivity.

HNP-FHA-11 11.1-13 REV 31 9/13 FIRE AREA 1010 This area is considered safety related.

DESCRIPTION RPS Battery North Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 130 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-11 11.1-14 REV 31 9/13 CONSTRUCTION All the walls are block and 3-h rated. The ceiling is reinforced concrete and 3-h rated.

The floor is nonrated, reinforced concrete base slab. There is a fire-rated Class A door in the west wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which provides alarms both locally and in the MCR. There is no automatic suppression system or manual firefighting equipment in this area. However, hose stations and portable CO2 and dry chemical fire extinguishers are available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible quantity of fixed combustibles, a significant fire in this area is not considered credible. Hydrogen generated by the batteries is maintained at insignificant concentrations by the dedicated ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. The available smoke detectors in this area are expected to provide an early warning alarm, both locally and to the MCR to ensure prompt response by the plant fire brigade. The low fire loading, rated construction, and available firefighting equipment located in area 0001 preclude propagation of a fire to adjacent areas.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-15 REV 31 9/13 FIRE AREA 1013 This area is considered safety related.

DESCRIPTION RPS MG Set Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 276 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014, 0040

HNP-FHA-11 11.1-16 REV 31 9/13 CONSTRUCTION All walls are concrete block and 3-h rated. The ceiling and floor are reinforced concrete and 3-h rated. There are two fire-rated Class A doors; one in the east wall to area 0040 and one in the west wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in Appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area, however, hose stations and portable CO2 and dry chemical fire extinguishers are located in adjacent area 0014.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the installed smoke detectors will alert the MCR to ensure prompt response by the plant fire brigade. Available firefighting equipment in area 0014, along with 3-h-rated wall and door construction, preclude the propagation of a fire to other areas. A fire in this area will not affect safe shutdown capability or result in a significant release of radioactivity.

HNP-FHA-11 11.1-17 REV 31 9/13 FIRE AREA 1015 This area is considered safety related.

DESCRIPTION Unit 1 Annunciator Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 200 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-18 REV 31 9/13 CONSTRUCTION All walls are concrete block and are 3-h rated. The floor and ceiling are 3-h-rated, reinforced concrete. A fire-rated Class A sliding door to area 00l4 is located in the north wall.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There are hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a fire in this area, the installed smoke detectors will alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction, along with the available manual firefighting equipment from area 0014, precludes the propagation of a fire outside this area. A fire in this area will not affect the capability to achieve and maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-19 REV 31 9/13 FIRE AREA 1016 This area is considered safety related.

DESCRIPTION West 600-V Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 462 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; E, S-B/2; W-B, H/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-20 REV 31 9/13 CONSTRUCTION The north wall is concrete and 3-h rated. The west wall is block and is 3-h rated. The south and east walls are block and 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and are 3-h rated. The south wall contains a fire-rated Class A sliding door to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There are H2O hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS This area is exempt from the Section III.G.2 requirements for an areawide suppression system and the 2-h-rated boundaries of the area are exempted from the requirement for complete 3-h-rated barriers per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the available smoke detectors will provide an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction, along with available firefighting equipment from area 0014, precludes the propagation of a fire outside this area. A fire in this area will not affect the capability to achieve and maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-21 REV 31 9/13 FIRE AREA 1017 This area is considered safety related.

DESCRIPTION East 600-V Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 462 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; W, S-B/2; E-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-22 REV 31 9/13 CONSTRUCTION The north wall is 3-h-rated, reinforced concrete. The east, west, and south walls are block. The east wall is 3-h rated and the west and south walls are 2-h rated (see exemptions). The ceiling and floor are reinforced concrete and are 3-h rated. There is a fire-rated Class A sliding door in the south wall to area 0014. Also, there is a 1.5-in.-high oil retaining curb in the doorway of fire door 1L48-C31.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which provides alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There are H2O hose reels and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h-rated fire barriers was granted for the 2-h-rated walls in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a fire in this area, the available smoke detectors are expected to provide an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The low fire loading, rated construction, and available firefighting equipment from area 0014 preclude propagation of a fire beyond the boundaries of this area.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-23 REV 31 9/13 FIRE AREA 1018 This area is considered safety related.

DESCRIPTION West DC Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 245 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E, S-B/2; W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-24 REV 31 9/13 CONSTRUCTION The west wall is block and is 3-h rated. The south, east, and north walls are block and are 2-h rated (see exemptions). The ceiling and floor are reinforced concrete and 3-h rated. There is a fire-rated Class A sliding door in the south wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. There is no automatic suppression system or manual firefighting equipment in this area. There are hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h-rated fire barriers was granted for the 2-h-rated barriers in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The low fire loading, rated construction, and available firefighting equipment from area 0014 preclude the propagation of a fire outside this area.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-25 REV 31 9/13 FIRE AREA 1019 This area is considered safety related.

DESCRIPTION Transformer Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 218 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 145,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/2 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-26 REV 31 9/13 CONSTRUCTION All the walls are block with a 2-h rating (see exemptions). The floor and ceiling are reinforced concrete and are 3-h rated. There is a fire-rated Class A sliding door in the east wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There are hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS This area is exempted from the Section III.G.2 requirements for an areawide automatic suppression system and the 2-h-rated boundaries of the area are exempted from the requirements for complete 3-h-rated fire barriers per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction along with available manual firefighting equipment from area 0014 preclude the propagation of a fire outside this area.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-27 REV 31 9/13 FIRE AREA 1020 This area is considered safety related.

DESCRIPTION East DC Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 292 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls S, W, N-B/2; E-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

HNP-FHA-11 11.1-28 REV 31 9/13 CONSTRUCTION All the walls are block. The east wall is 3-h rated and the rest of the walls are 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and 3-h rated. There is a fire-rated Class A sliding door in the west wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR. There is no automatic suppression system or manual firefighting equipment in this area. There are H2O hose stations and portable CO2 and dry chemical fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h-rated barriers was granted for the 2-h walls in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The low fire loading, rated wall and door construction, and available firefighting equipment from area 0014 preclude the propagation of a fire outside this area.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.1-29 REV 31 9/13 FIRE AREA 1023 This area is not considered safety related.

DESCRIPTION Oil Conditioner Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 1912 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 670,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls W, N-C/3; S-B/3; E-B/3 - Floors, Ceiling, or Roof Concrete

- Fixed Openings None

- Penetrations See text

- Doors (Fire-rated Class/Zone no.) A/0014

HNP-FHA-11 11.1-30 REV 31 9/13 CONSTRUCTION The north and west walls are 3-h-rated reinforced concrete. The east wall and the south wall are 3-h-rated block. There is a fire-rated Class A sliding door in the south wall accessing area 0014. The entry is provided with a high curb designed to contain the maximum postulated oil spill to the area. The floor and ceiling are reinforced 3-h-rated concrete. The ceiling contains a shaft which extends up to el 164 ft. The walls of this shaft are 3-h-rated concrete. The top of the shaft is covered by a nonrated metal hatch cover (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document analysis.

FIRE PROTECTION This area is equipped with full wet pipe sprinkler coverage. There is no manual firefighting equipment in the area. However, portable CO2 and dry chemical fire extinguishers and a hose station, located immediately outside this area, are available in area 0014. Since the only credible fire for this area is an oil fire with no incipient stage, an early warning detection system is not provided. Activation of the suppression system results in an alarm, both locally and in the MCR.

APPENDIX R EXEMPTIONS An exemption was requested from the Section III.G.2 requirement for complete 3-h-rated barriers for the nonrated hatches in the ceiling of this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The only significant fire that can be postulated for this area would be as a result of the ignition of the turbine lube oil or EHC fluid. The full coverage wet pipe sprinklers provide for rapid extinguishment of this type of fire. The rated or substantial construction of the area boundaries will contain the fire until it can be extinguished. Activation of the suppression system results in an alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. In the event of a failure of the suppression system, the fire brigade can extinguish the fire using the available manual suppression in adjacent area 0014.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.3-1 REV 28 11/10 FIRE AREA 1201 This area is considered safety related.

DESCRIPTION Unit 1 Drywell and Torus Unit 1 Reactor Building

DRAWING NUMBER(S) H-11826, H-11827, H-11828, H-11829, H-11830

AREA 3,157 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 55,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S, C/NR - Floors, Ceiling or Roof Steel - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone no.) NR/1203F, 1205F

HNP-FHA-11 11.3-2 REV 28 11/10 CONSTRUCTION The boundaries of this area are nonrated, reinforced concrete and steel exempted barriers (see exemptions). The torus and downcomers are steel, approximately 1-in. thick. All penetrations and doors to adjacent areas are nonrated and airtight.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION There is no detection system, automatic suppression system, or manual firefighting equipment in the drywell. However, the drywell is inerted during power operation, thereby preventing fires from being ignited or sustained. A hose stream can be provided to all parts of this area using the hose stations located in areas 1205 and 1203, during nonpower operation.

APPENDIX R EXEMPTIONS The drywell vessel and shield walls comprise a portion of the boundary between the north and south halves of the reactor building. This boundary, including the drywell walls, has been exempted from the Section III.G.2 requirement for complete, 3-h-rated barriers per the April 1984 NRC Safety Evaluation Report (SER).

CONSEQUENCES OF DESIGN BASIS FIRE During power operation, the drywell is inerted and a fire is not credible. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown. Per Appendix R to 10 CFR 50, no further protection is required. During periods when the drywell is not inerted (i.e.,

outages) a fire will not propagate to other fire areas due to the substantial construction and the low combustible loading. In the event of a fire during an outage, the high traffic in the drywell will ensure prompt detection of a fire in its early stages. Existing drywell temperature instruments may also be used for drywell fire detection. Fire detection by either means is expected to result in prompt response by the plant fire brigade. The available manual firefighting equipment in the adjacent areas is adequate to extinguish the fire. The primary combustibles in this area are concentrated in four specific locations; in each of the two recirculation pumps and each of two cable penetration sections. Curbs are provided under each recirculation pump to contain any oil spills to the localized area of the pump, thereby preventing propagation of a pump lube oil fire throughout the area. The two cable penetration sections are on opposite sides of the area. Each section contains cables of predominantly one safe shutdown path. This separation provides assurance that damage to only one safe shutdown path will result from a fire in this area and that a fire originating in one cable penetration section will not propagate to the other.

Similarly, any radioactive materials contained in the area will be confined to the area in the event of a fire.

HNP-FHA-11 11.3-3 REV 28 11/10 FIRE AREA 1203 This area is considered safety related.

DESCRIPTION Reactor Building South Unit 1 Reactor Building - All elevations

DRAWING NUMBER(S) H-11826, H-11827, H-11828, H-11829, H-11830, H-11831

AREA 22,226 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil Cable Cable insulation Class A Plank, plywood, paper, rags, wood, clothing, trash, cardboard Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases Acetylene

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC); Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C, S/3-NR, Open; S-C, S/3; E-C/NR; W-C/3 (See text) - Floors, Ceiling, or Roof Concrete - Fixed Openings OP, OD, OH/1205; SD/Outside; CH/1201 - Penetrations See text - Doors (Fire-rated Class/Zone no.) 2-A/1205, 2203; A/0101, 1105; B/0201, 1205; 2-NR/1604; NR/1609 HNP-FHA-11 11.3-4 REV 28 11/10 CONSTRUCTION Below Elevation 130 ft The west and south walls are reinforced concrete reactor building exterior walls and are 3-h-rated barriers. The east wall is a nonrated, below grade, reinforced concrete exterior wall. The north boundary is open on the east and west to area 1205 and defined by the nonrated concrete drywell in the center (see exemptions). Area 1201 (drywell and torus) is separated from area 1203 at this elevation by the nonrated but substantial torus vessel and downcomer walls which are constructed of approximately 1-in.-thick steel. The floor and ceiling are nonrated, reinforced concrete. There are several equipment hatches and two stairwells accessing the 130 ft elevation of this area.

Elevation 130 ft The west and south walls are exterior, 3-hr-rated, reinforced concrete. The east wall is a nonrated, reinforced concrete exterior wall except for that portion of the wall adjacent to area 1604. The north boundary is comprised of: the steam chase on the west which is open to area 1205 through the labyrinth entrys, the nonrated concrete drywell in the center, and the open corridor east to area 1205 (see exemptions). Access to other levels of the reactor building is provided through open stairways to el 87 ft and 158 ft. In addition, there is an elevator enclosed in a block wall and a large open equipment hatch to upper levels of the reactor building. The east wall contains a large, nonrated, railroad airlock door and a nonrated door accessing the railroad airlock, area 1604. The west wall contains a fire-rated Class A door to area 1105 and a nonrated steam blowout panel to area 1101 (see exemptions). The floor and ceiling are nonrated, reinforced concrete. The ceiling and floor contain steam vent openings to area 1205 and zone 1203A, respectively (see exemptions).

Elevation 158 ft The east wall is nonrated, reinforced concrete exterior wall. The west wall is reinforced concrete and 3-h rated. The southwest corner walls (around the stairwell) are reinforced concrete and 3-h rated. The north area boundary consists of the nonrated, reinforced concrete shield wall adjacent to the phase separators (zone 1205M), the concrete drywell wall, and the open corridor on the east side to area 1205 (see exemptions). The floor and ceiling are nonrated, reinforced concrete. The ceiling of this elevation is the boundary between areas 1203 and 1205. It is provided with full coverage wet pipe suppression at el 185 ft.

There are three fire-rated Class A doors in the stairwell portion of this elevation; one in the west wall, one in the south wall, and one in the north wall, which access the Unit 1 turbine building (0101), the Unit 2 reactor building (area 2203), and the HVAC room (area 1205), respectively.

There is an elevator and a stairwell which access the 130-ft and 185-ft elevations of this area.

In addition, there is an open equipment hatch which accesses the 130-ft elevation below and area 1205 on the 185-ft elevation above. The hatch is equipped with a fixed water spray suppression system around its perimeter on the 185-ft elevation.

HNP-FHA-11 11.3-5 REV 28 11/10 CONSTRUCTION (cont'd) 185-ft Elevation (Stairwell)

All the walls are reinforced concrete and 3-h barriers. There is an elevator and an open stairwell which access the 203-ft and 158-ft elevations within this area. The floor and ceiling are nonrated, reinforced concrete. There are two fire-rated Class A doors which access adjacent areas 1205 and 2203 in the east and south walls, respectively. A nonrated airlock vault type door in the north wall accesses area 1609.

203-ft Elevation (Stairwell)

All the walls are reinforced concrete and 3-h rated. An elevator and open stairwell access the l85-ft and 228-ft elevations of this area. The east wall contains a fire-rated Class B door which accesses area 1205. The floor and ceiling are reinforced, nonrated concrete.

228-ft Elevation (Stairwell)

All the walls are concrete and 3-h rated. An elevator and open stairwell access lower elevation 203 ft of this area. A fire-rated class B door in the east wall accesses area 0201 and a nonrated door in the west wall accesses the turbine building roof.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with wet pipe sprinkler systems which are designed to function as a fire propagation barrier to separate the south half of the reactor building (area 1203) from the north half (area 1205). These systems are described and defined in section 3.4 of this document.

These wet pipe systems are located in the east and west torus room on el 87 ft, in the east corridor on el 130 ft, on either side of the main steam chase on el 130 ft, and in the east corridor on el 158 ft. The ceiling of the 158-ft elevation east of column line RB is the 185-ft elevation reactor building working floor (area 1205). The hatchway penetrating this ceiling is equipped with a high density, fixed water spray suppression system around the hatch. The remainder of the 185-ft elevation working floor (with exception of the corridor south of the fuel pool) on the south half of the reactor building is equipped with a full coverage sprinkler system. The combination of sprinkler systems is designed to preclude propagation of a fire either up or down through the floor or hatch.

HNP-FHA-11 11.3-6 REV 28 11/10 FIRE PROTECTION (cont'd)

An additional wet pipe system is provided in the RCIC pump room. Linear thermal detectors are provided in the reactor building centerline suppression system sections on el 87 ft and the east reactor building centerline suppression system section on el 130 ft. Linear thermal detectors are also provided in the RHR pump room on el 87 ft and the CRD area on elevation 130 ft.

Smoke detectors are provided in the reactor building centerline suppression system section south of the main steam chase on el 130 ft, in the southeast corner of the area at el 130 ft and in the east reactor building centerline suppression system section on el 158 ft. Activation of the detection or suppression systems results in an alarm, both locally and in the MCR.

There are hose stations and portable CO2 fire extinguishers located throughout the area.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements of Appendix R has been approved for the nonrated walls, openings (such as steam vents) and open areas separating this area from the north half of the reactor building for the nonrated steam blowout panel between this area and area 1101, and for the lack of areawide suppression coverage per the April 1984 NRC SER.

An exemption from Section III.G.2 requirements has been approved for certain safe shutdown components located under the reactor building centerline suppression system per the January 1987 NRC SER.

An exemption from Section III.G.2 requirements has been requested for the 1 1/2-h-rated doors between this area and areas 0201 and 1205, as is detailed in appendix C of this document.

However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

HNP-FHA-11 11.3-7 REV 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE The north half of the Unit 1 reactor building primarily contains components and cables for safe shutdown path 2 and the south half primarily contains components and cables for safe shutdown path 1. Path 1 systems that are located in the north half and path 2 systems that are located in the south half of the reactor building and are required for safe shutdown, are protected by a 1-h fire-rated barrier. All safe shutdown circuits in the reactor building centerline suppression system sections are protected by a 1-h fire-rated barrier.

The existing fire detection systems provide reasonable assurance that a fire will be detected in its initial stages before significant damage occurs. The fire will then be suppressed by the automatic systems or manually by the plant fire brigade before it represents a serious threat to safe shutdown systems. The fire suppression systems, fire barriers, the large open areas of the reactor building, and the existing spatial separation between redundant paths provide assurance that one path will remain free of fire damage.

Therefore, a fire in the north half of the Unit 1 reactor building will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.3-8 REV 28 11/10 FIRE ZONE 1203A This zone is considered safety related.

DESCRIPTION Reactor Building South Unit 1 Reactor Building - Below el l30 ft

DRAWING NUMBER(S) H-11826

AREA 6,670 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C, S/NR, Open; S, W-C/3; E-C/NR; SE, SW-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OP/1205; CH, M, OP/1203F - Penetrations See area 1203 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-9 REV 28 11/10 CONSTRUCTION The north zone boundary consists of the drywell in the center, which is nonrated steel and concrete. The east and west sides of the north boundary are open to adjacent area 1205. The west and south walls (along columnn lines RA and Rl3, respectively) are reinforced concrete and are 3-h fire barriers. The southeast, southwest, and east walls are nonrated, reinforced concrete. The ceiling and floor are also nonrated, reinforced concrete. There are concrete and metal covered hatches and steam vent openings in the ceiling which access zone 1203F above.

Area 1201, the drywell and torus, is separated from area 1203 in this zone by the nonrated steel torus vessel walls. See area 1203 for penetrations.

FIRE PROTECTION The zone is equipped with a partial coverage linear heat detection system and wet pipe sprinkler system along the openings accessing area 1205. In addition, hose stations and a CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The reactor building centerline suppression system sprinklers are designed to prevent fire propagation through the open sections of this zone along column line R7 to area 1205. The suppression system, low combustible loading, and substantial construction preclude propagation of a design basis fire to other adjacent zones or areas. Activation of the suppression or detection system results in an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is sufficient to extinguish the fire.

HNP-FHA-11 11.3-10 REV 28 11/10 FIRE ZONE 1203B This zone is considered safety related.

DESCRIPTION Reactor Building Southeast Corner Room Unit 1 Reactor Building - el 87 ft

DRAWING NUMBER(S) H-11826

AREA 714 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E, NW-C/NR; S-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings CH, OS/1203F - Penetrations See area 1203 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-11 REV 28 11/10 CONSTRUCTION The south wall is reinforced concrete with a 3-h rating. The east and northwest diagonal walls are nonrated, reinforced concrete. The east wall is below grade reactor building exterior wall.

The floor and ceiling are nonrated, reinforced concrete. Stairs along the east wall access zone 1203F at the 130-ft elevation. Concrete covered hatches in the ceiling at the 130-ft elevation are provided for removal of the pumps and heat exchanger. See area 1203 for penetrations.

FIRE PROTECTION This zone is provided with full linear thermal detector coverage which provides alarms both locally and in the MCR. Manual firefighting equipment consisting of a hose station and portable CO2 fire extinguishers is located in this zone. No automatic suppression is provided in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low combustible loading consisting primarily of IEEE-383 qualified, fire retardant cables. The open stairwell creates a fire propagation possibility to zone 1203F.

However, the detection and alarm systems are expected to promptly alert the plant fire brigade to respond and suppress a fire using hose stations and portable fire extinguishers located in this zone. If propagation does occur, it will not result in any adverse impact on safe shutdown, since only other zones of area 1203 will be affected.

HNP-FHA-11 11.3-12 REV 28 11/10 FIRE ZONE 1203C This zone is considered safety related.

DESCRIPTION Reactor Building Southwest Corner Room Unit 1 Reactor Building - el 87 ft

DRAWING NUMBER(S) H-11826, H-11827

AREA 714 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls NE-C/NR; W, S-C/3; B/NR around stairwell - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 1203 text - Doors (Fire-rated Class/Zone #) NR/1203F

HNP-FHA-11 11.3-13 REV 28 11/10 CONSTRUCTION The south and west walls of this zone are reinforced concrete and 3-h fire rated. The northeast diagonal wall is nonrated, reinforced concrete. The stairway along the south wall provides access to zone 1203F at el 130 ft. The floor is reinforced concrete base slab and the ceiling is nonrated, reinforced concrete. The stairwell penetrates the ceiling and is enclosed at el 130 ft by a nonrated block enclosure containing a nonrated door. See area 1203 for penetrations.

FIRE PROTECTION This zone is equipped with an automatic wet pipe suppression system. Activation of the suppression system results in an alarm both locally and in the MCR. The manual firefighting equipment provided in this zone includes a hose station and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE The nonrated ceiling and diagonal wall provide a fire propagation possibility to zone 1203F and 1203A, respectively. However, the low combustible loading, the automatic suppression, and the substantial wall construction preclude the propagation of the fire to adjacent zones. The alarms which would result from suppression system actuation ensure prompt response by the plant fire brigade. In addition, if propagation of the design basis fire did occur, no adverse impact on safe shutdown would result, since only other zones of fire area 1203 would be affected. Manual firefighting equipment provided is adequate to extinguish the fire.

HNP-FHA-11 11.3-14 REV 28 11/10 FIRE ZONE 1203F This zone is considered safety related.

DESCRIPTION Working Floor South Unit 1 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11827

AREA 8172 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases Acetylene

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 116,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC); Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR, Open; S-C/3, B/NR; E-C/NR; W-C/3, B/NR

- Floors, Ceiling or Roof Concrete - Fixed Openings CH, OS/1203B; OD, OP/1205; CH, M, OP/1203A; OH/1203K,1205N;OS/1203I

- Penetrations See area 1203 text - Doors (Fire-rated Class/Zone #) A/1105; 2-NR/1604; NR/1203C, I

HNP-FHA-11 11.3-15 REV 28 11/10 CONSTRUCTION The south wall and essentially all of the west wall is 3-h-rated, reinforced concrete reactor building exterior. The east wall and the portion of the north wall around the drywell and personnel access area are nonrated, reinforced concrete. The remainder of the north boundary (northeast and northwest portions) is open to area 1205. The elevator (zone 1203I) and stairwell (zone 1203C) located in the southwest corner of this zone are enclosed in nonrated block structures with nonrated access doors. The floor and the ceiling are nonrated, reinforced concrete. The floor and ceiling inside the main steam chase portion of this zone contain nonrated steam vents to area 1205 above and zone 1203A below (see exemptions in area 1203). An open stairwell in the southeast corner communicates with zone 1203B. A fire-rated Class A door accesses the east cableway foyer of the control building (area 1105). A nonrated railroad airlock vault door and a nonrated door in the east wall communicate with the railroad airlock (area 1604). Nonrated, concrete covered equipment hatches penetrate the floor and ceiling and a large open hatch in the ceiling communicates with zone 1203K. A nonrated steam blowout panel to area 1101 is located in the west wall of the zone (see exemptions in area l203). See area 1203 for penetrations.

FIRE PROTECTION Linear thermal and smoke detection systems provide alarms both locally and in the MCR for the entire zone except the main steam chase and above adjacent to area 1604. A wet pipe reactor building centerline suppression system is installed to separate the reactor building into two halves (areas 1203 and 1205). The portion of the suppression system in this zone extends approximately 20 ft south of R7 on the east side of the drywell and extends from the main steam chase to the southwest stairwell enclosure. This zone contains no other automatic suppression system. In addition, hose stations and portable CO2 fire extinguishers are located in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone has a moderate combustible loading and substantial fire barriers which are expected to prevent propagation to adjacent zones and areas. Fire propagation possibilities are greatest at the nonrated east wall to the railroad airlock (area 1604) and at the stairwells and floor and ceiling hatches. However, the moderate combustible loading and minimal amounts of intervening combustibles greatly reduce this possibility. The railroad airlock door is constructed of solid steel, approximately 1 in. thick. The east wall is a reactor building exterior wall constructed of reinforced concrete a minimum of 8 in. thick. Propagation through the stairwells and hatches would have no adverse impact on safe shutdown since it would affect only other zones of fire area 1203. The detection system ensures rapid detection and prompt response by the plant fire brigade. The available firefighting equipment in this zone is adequate to extinguish the fire.

HNP-FHA-11 11.3-16 REV 28 11/10 FIRE ZONE 1203I This zone is not considered safety related.

DESCRIPTION Stairwell Vestibule Reactor Building - el 130 ft, 158 ft, 185 ft, 203 ft, and 228 ft

DRAWING NUMBER(S) H-11827, H-11828, H-11829, H-11830, H-11831

AREA 677 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Wood, plank, plywood, paper, clothing, trash, cardboard, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 90,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 (See text) - Floors, Ceiling or Roof Concrete - Fixed Openings OS/1203F - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/1205; 2-A/2203I; A/0101; B/0201, 1205; NR/1203F, K, 1609; Outside

HNP-FHA-11 11.3-17 REV 28 11/10 CONSTRUCTION All stairwell walls are 3-h rated, reinforced concrete. The stairwell is open to the reactor building 130-ft floor (zone 1203F). The stairwell doors are fire-rated Class A except for the nonrated secondary containment airlock vault doors at el 185 ft (to area 1609) and at approximately el 245 ft (to turbine building roof) and the fire-rated Class B doors to areas 1205 and 0201 on the 203-ft and 228-ft elevations, respectively. The elevator doors at all elevations, as well as the block enclosure around the elevator shaft, are nonrated. See area 1203 for penetrations.

FIRE PROTECTION Portable CO2 fire extinguishers are located in this zone. Hose stations are accessible from the reactor building at all elevations except 203 ft. The zone contains no detection or automatic suppression systems.

CONSEQUENCES OF DESIGN BASIS FIRE The low combustible loading and substantial, rated concrete wall construction of this zone preclude the propagation of fire to adjacent zones. The only credible propagation which may occur is into the base of the stairwell from a design basis fire in zone 1203F. This propagation is acceptable since all redundant safe shutdown circuits throughout area 1203 are protected as required. Although there are no automatic detection or suppression systems, this zone is a high traffic area. Prompt detection by plant personnel and prompt response by the plant fire brigade using the available firefighting equipment are adequate to contain the fire.

HNP-FHA-11 11.3-18 REV 28 11/10 FIRE ZONE 1203K This zone is considered safety related.

DESCRIPTION Working Floor South Unit 1 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11828

AREA 5,956 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Plank, plywood, paper, clothing, rags, and cloth Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR, Open; E-C/NR; S-S/3; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OH/1203F, 1205; OD, OP/1205 - Penetrations See area 1203 text - Doors (Fire-rated Class/Zone #) NR/1203I

HNP-FHA-11 11.3-19 REV 28 11/10 CONSTRUCTION The east wall is a nonrated, reinforced concrete exterior wall. The west wall is 3-h-rated, reinforced concrete. The entire north boundary is an exempted Appendix R boundary consisting of the concrete shield wall adjacent to the reactor water cleanup phase separators, the drywell wall, shield wall adjacent to the reactor water cleanup pump, and the open corridor to area 1205. The south wall is a steel and fire resistant material composite and is a 3-h-rated fire barrier. There is a nonrated door in the west wall which accesses zone 1203I. The floor and ceiling are nonrated, reinforced concrete. There is an open equipment hatch which accesses zone 1203F below and area 1205 above. The ceiling of this zone serves as the area boundary between area 1203 and 1205. To ensure that propagation of a fire through this boundary does not occur, the majority of the el 185-ft south floor is covered by a wet pipe suppression system and the hatch is equipped with closely spaced fixed spray sprinkler heads around its perimeter. See area 1203 for penetrations.

FIRE PROTECTION A wet pipe reactor building centerline suppression system, installed to separate the reactor building into two halves (areas 1203 and 1205), extends approximately 20 ft into this zone south of column line R7 on the east side of this zone. Smoke detection is provided in the suppression coverage section. Individual full coverage wet pipe suppression systems are provided in the ASD "A" area and ASD "B" area of this fire zone as full coverage suppression systems.

Activation of the system results in an alarm both locally and in the MCR. The ASD "A" area and ASD "B" area contain no manual firefighting equipment. However, manual firefighting equipment including hose stations and portable CO2 fire extinguishers is available in this fire zone (Fire Zone 1203K). Manual firefighting equipment consists of a hose station and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this zone, the open passageways and hatches create a fire propagation hazard to adjacent areas and zones. The suppression system in the northeast section of this zone is designed to prevent this propagation. Similarly, the areawide sprinkler coverage and hatch spray system around the open hatch on the 185-ft elevation are designed to prevent propagation through the hatch. The remainder of the zone boundaries are rated fire barriers or nonrated but substantial shield walls (see exemptions in area 1203). Products of combustion due to a fire in this zone are expected to actuate the detection system in the northeast part of the zone to ensure prompt response by the plant fire brigade. The substantial or rated construction, the installed suppression systems, the likelihood of early detection, and the low combustible loading preclude propagation of the design basis fire beyond the boundaries of this zone.

HNP-FHA-11 11.3-20 REV 28 11/10 FIRE AREA 1205 This area is considered safety related.

DESCRIPTION Unit 1 Reactor Building North Unit 1 Reactor Building - All elevations

DRAWING NUMBER(S) H-11826, H-11827, H-11828, H-11829, H-11830, H-11831

AREA 49,759 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil Cable Cable insulation Class A Clothing, trash, wood, paper, rags, plank, plywood, tape (cloth) Charcoal Charcoal Plastics Plastic, ladders, respirators Miscellaneous Rubber, solvent Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe; Water spray; Preaction (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det; Smoke det; Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls W, N-C/3, NR; S-C, S/3, NR, Open; E-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings CH, MH/1201; OP, OD, OH/1203; SD, CH/0201 - Penetrations See text - Doors (Fire-rated Class/Zone no.) 2-A/1203; A/1301; B/1203; NR/0201

HNP-FHA-11 11.3-21 REV 28 11/10 CONSTRUCTION Below Elevation 130 ft The north and west walls of this area consist of 3-h-rated, reinforced concrete, reactor building exterior walls separating this area from the radwaste building and turbine building, respectively.

The central part of the south boundary (enclosing the drywell) is nonrated, reinforced concrete; the remaining part of the south boundary is open to area 1203 (see exemptions). The east wall is a nonrated, reinforced concrete, reactor building exterior wall. Access from the el 130-ft working floor to the northeast and southwest corner rooms is provided through open stairways.

Access to the main floor at this elevation is by a small hatch on the north side of the 130-ft elevation floor. The floor is nonrated, reinforced concrete slab. The ceiling is nonrated, reinforced concrete. The drywell and torus (area 1201) are separated from this area by the nonrated but substantial steel torus vessel and downcomer walls which are constructed of approximately one 1-in.-thick steel.

The west wall and west portion of the north wall (adjacent to area 1301) are 3-h-rated, reinforced concrete, reactor building exterior walls. The east wall and the remainder of the north wall are nonrated, reinforced concrete exterior walls. The south boundary is open to area 1203 on the east side, open to area 1203 through the labyrinth entries of the main steam chase on the west side, and defined by the drywell and personnel access area walls in the center (see exemptions). There is one fire-rated Class A door in the north wall accessing area 1301. There are open stairwells and covered equipment hatches accessing the upper and lower elevations of this area. The floor and ceiling are nonrated, reinforced concrete. The ceiling and floor contain steam vent openings to zones 1205A below and 1205N above.

Elevation 158 ft The west wall, the section of wall along column line RB from column lines R5 to R11 and the west portion of the north wall (adjacent to area 1301), are 3-h-rated, reinforced concrete, reactor building exterior wall. The east wall and remainder of the north wall are nonrated, reinforced concrete exterior walls. The south wall is 3-h-rated, reinforced concrete around zone 1203I and open to area 1203 on the east side of this floor. The remainder of the south boundary consists of the nonrated, reinforced concrete, drywell, reactor water cleanup (RWCU) phase separator room and RWCU pump room south shield walls (see exemptions). The floor and ceiling are nonrated, reinforced concrete. There is an open stairwell and several covered equipment hatches which access the upper and lower elevations of this area. Openings in the floor to area 1203 and zone 1205F and steam blowout panels located in the west wall are designed to vent steam from a main steam piping rupture to the turbine building, area 0101 (see exemptions). There is a fire-rated Class A door in the south wall to area 1203.

HNP-FHA-11 11.3-22 REV 28 11/10 CONSTRUCTION (cont'd) 185 ft and 203 ft Elevations This section consists of the entire reactor building floor on these elevations with the exception of the 185-ft elevation roof (area 1609), the drywell (area 1201), the refueling and storage pools (area 0201), and the stairwell (zone 1203I). All walls are nonrated, reinforced concrete with the exception of the south wall and the walls enclosing the stairwell, which are both 3-h-rated, reinforced concrete. The floors and ceilings are reinforced, nonrated concrete. The floors contain open stairwells and equipment hatches to the lower elevations of this area and area 1203. The ceiling is the refueling floor, a part of secondary containment. It contains a stairwell opening, enclosed in a block "dog-house," with a nonrated access door to area 0201. The ceiling also contains several covered and sealed equipment hatches. See area 0201 for an evaluation of this area boundary. There is a fire-rated Class A door on the 185-ft elevation and a fire-rated Class B door on the 203-ft elevation to zone 1203I.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in Appendix I of this document.

FIRE PROTECTION This area is equipped with wet pipe sprinklers designed as a fire propagation barrier to separate the north half of the reactor building (area 1205) from the south half (area 1203).

These systems are described and defined in section 3.4 of this document. These wet pipe systems are located on the east and west sides of the drywell at el 87 ft, on the east side of the drywell at el 130 ft, on both sides of the main steam chase at el 130 ft, on the east side of the drywell at el 158 ft, the entire south half of the building at el 185 ft with the exception of the corridor (zone 1205W) beside the fuel pool. A high density, fixed water spray suppression system is provided around the equipment hatch at el 185 ft. This combination of suppression systems at el 185 ft is designed to prevent propagation of a fire either up or down through the floor or hatch.

Additional suppression systems include a wet pipe system in zone 1205Z, a water spray system with directional spray heads to provide a propagation barrier for the south wall of this zone, a preaction system in zone 1205N, and individual deluge systems for the charcoal filters in zones 1205N and 1205Q. Linear thermal heat detectors are provided in the reactor building centerline suppression systems sections at el 87 ft and 130 ft, in zone 1205B, in zone 1205F at el 130 ft, and in zones 1205N and 1205Q

HNP-FHA-11 11.3-23 REV 28 11/10 FIRE PROTECTION (cont'd) at el 158 ft. Smoke detectors are provided in the corners of el 130 ft (in the vicinity of stairwells and hatches) and in the reactor building centerline suppression system section of el 158 ft.

Thermal detectors are provided for the deluge systems in all filters containing charcoal.

Activation of any of the detection or suppression systems (except zone 1205Z south wall water curtain) results in both local and MCR alarms.

The area is equipped with hose stations and portable CO2 fire extinguishers for manual firefighting.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements has been approved for the nonrated walls and open areas separating this area from the south half of the reactor building, for the lack of full area suppression coverage, and for the nonrated main steam blowout panels, per the April 1984 NRC SER.

Additional exemptions from the Section III.G.2 separation requirements have been approved for certain safe shutdown components located under the reactor building centerline suppression systems and for HPCI system components located in this area per the January 1987 NRC SER.

Requests for exemptions from the Section III.G.2 requirement for complete 3-h-rated barriers have been submitted as documented in appendix C of this document for the nonrated refueling floor and refueling floor access stairwell doghouses. However, per the January 1987 NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The north half of the Unit 1 reactor building primarily contains components and cables for safe shutdown path 2, and the south half primarily contains components and cables for safe shutdown path 1. Path 1 systems that are located in the north half and path 2 systems that are located in the south half of the reactor building are protected by a 1-h fire-rated barrier. All safe shutdown circuits for both paths are protected by a 1-h fire-rated barrier in the reactor building centerline suppression system zones.

The existing fire detection systems provide reasonable assurance that a fire will be detected in its initial stages before significant damage occurs. The fire will then be suppressed by the automatic systems or manually by the plant fire brigade before it represents a serious threat to shutdown systems. The fire suppression systems, fire barriers, the large open areas of the reactor building, and the existing spatial separation between redundant safe shutdown paths provide assurance that one path will remain free of fire damage.

Therefore, a fire in the south half of the Unit 1 reactor building will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.3-24 REV 28 11/10 FIRE ZONE 1205A This zone is considered safety related.

DESCRIPTION Reactor Building North Unit 1 Reactor Building - Below el 130 ft

DRAWING NUMBER(S) H-11826

AREA 6,770 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; S-C, S/NR, Open; E-C/NR; W-C/3; NE, NW-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH, M, OP/1205F; OP/1203 - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.3-25 REV 28 11/10 CONSTRUCTION The north and west walls are reinforced concrete, below grade, reactor building exterior walls and are 3-h fire barriers. The northeast, northwest, and east walls are nonrated, reinforced concrete. The south zone boundary is nonrated concrete and steel, defined by the drywell in the center. The east and west sides of the south boundary along column line R7 are open to area 1203. The floor and ceiling are nonrated, reinforced concrete. There are several covered equipment hatches and a steam vent opening in the ceiling which communicate with zone 1205F above. Area 1201 (drywell and torus) is separated from area 1205 in this zone by the nonrated steel torus vessel and downcomer walls. See area 1205 for penetrations.

FIRE PROTECTION The zone is equipped with partial coverage linear heat detection and wet pipe sprinklers along the openings in the south boundary and extending approximately 25 ft into this zone. Activation of a detection or suppression system results in an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. In addition, hose stations and a portable CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The suppression systems in this zone are designed to prevent fire propagation through the openings along column line R7 to area 1203. The suppression system, the low fire loading, and substantial concrete walls preclude propagation of the design basis fire beyond the boundaries of this zone. Actuation of the installed suppression or detection system provides both local and MCR alarms which ensure prompt response by the plant fire brigade. The available firefighting equipment in this zone is adequate to extinguish a fire.

HNP-FHA-11 11.3-26 REV 28 11/10 FIRE ZONE 1205B This zone is considered safety related.

DESCRIPTION Reactor Building Northeast Corner Room Unit 1 Reactor Building - el 87 ft

DRAWING NUMBER(S) H-11826

AREA 714 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E, SW-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/1205F - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) NR/1205Z

HNP-FHA-11 11.3-27 REV 28 11/10 CONSTRUCTION The north and southwest walls are nonrated, reinforced concrete. The east wall is reinforced concrete, below grade, reactor building exterior wall. The floor is nonrated, reinforced concrete base slab. The ceiling is nonrated, reinforced concrete with an open stairwell and concrete covered hatches to zone 1205F. There is one nonrated, water tight door in the north wall to zone 1205Z. See area 1205 for penetrations.

FIRE PROTECTION This zone is equipped with a full coverage linear heat detection system which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system in this zone. There is a suppression system in adjacent zone 1205Z equipped with spray heads directed onto the interface wall designed to prevent fire propagation through the wall. A hose station and portable CO2 fire extinguishers are provided in this zone for manual firefighting. An additional hose station is available from adjacent zones 1205Z and 1205F.

CONSEQUENCES OF DESIGN BASIS FIRE During a design basis fire, the linear heat detection system in this zone is expected to alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The available firefighting equipment is adequate to extinguish the fire. The low fire loading combined with the substantial wall construction is expected to preclude the possibility of propagation of the fire beyond the boundaries of this zone. The suppression system in zone 1205Z provides additional assurance that propagation through this boundary will not occur.

HNP-FHA-11 11.3-28 REV 28 11/10 FIRE ZONE 1205C This zone is considered safety related.

DESCRIPTION Northwest Corner Room Unit 1 Reactor Building - Below el 130 ft

DRAWING NUMBER(S) H-11826

AREA 714 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 40,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, W-C/3; SE-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings OS, CH/1205F - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.3-29 REV 28 11/10 CONSTRUCTION The north and west walls are reinforced concrete, reactor building exterior and are 3-h fire barriers. The southeast wall is nonrated, reinforced concrete adjacent to zone 1205A. The floor and ceiling are nonrated, reinforced concrete. There is an open stairwell and a concrete hatch which access zone 1205F above. See area 1205 for penetrations.

FIRE PROTECTION The zone is not equipped with any detection or automatic suppression systems; however, a hose station and portable CO2 fire extinguishers are located in this zone, and an additional hose station is available in zone 1205F for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading and substantial or rated concrete walls preclude propagation of the design basis fire beyond the boundaries of this zone, except potentially through the open stairwell to zone 1205F. This is not expected to occur, since there are no intervening combustibles in the vicinity of the stairwell opening in zone 1205F. This zone contains a low combustible loading, and the minimal quantities of hot smoke and gas propagating through the opening would be rapidly diluted in the large volume of zone 1205F. In the unlikely event that propagation occurs, the ability to achieve safe shutdown will not be affected. Detection of a fire will likely be provided by the smoke detectors in the vicinity of the stairwell in zone 1205F and result in prompt response by the plant fire brigade. The available firefighting equipment in this zone is adequate to extinguish a fire.

HNP-FHA-11 11.3-30 REV 28 11/10 FIRE ZONE 1205F This zone is considered safety related.

DESCRIPTION Working Floor North Unit 1 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11827

AREA 8,083 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Plank, plywood, clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 136,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC); Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3, NR; S-C/NR, Open; E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/1205B, C, I; M, CH, OP/1205A; OD, OP/1203; CH/1201; OH/1205N - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) A/1301; NR/1201

HNP-FHA-11 11.3-31 REV 28 11/10 CONSTRUCTION The north wall of the zone from column line RA to approximately column line RH is a reinforced concrete 3-h-rated fire barrier. The remainder of the north wall and the east wall are nonrated, reinforced concrete reactor building exterior walls. The south boundary is partially open to area 1203 along column line R7 on the east and west and is defined by the drywell concrete walls in the center. The west wall is a reinforced concrete, 3-h-rated fire barrier adjacent to the turbine building. There is a fire-rated Class A door in the north wall to the radwaste building. The floor is nonrated, reinforced concrete with covered equipment hatches accessing zones 1205A, 1205B, and 1205C below. There are two open stairways which access zones 1205B and 1205C. The ceiling is nonrated, reinforced concrete with one open stairway accessing zone 1205I above. The floor and ceiling in the main steam chase portion of this zone contain steam vent openings to zone 1205A below and 1205N above this zone. There is a nonrated airtight door accessing area 1201. See area 1205 for penetrations.

FIRE PROTECTION The zone contains a partial coverage detection system in the corners of the area near the stairs and hatches and partial coverage linear heat detection. There are hose stations and portable CO2 fire extinguishers provided for manual firefighting. An automatic reactor building centerline suppression system is provided as a propagation barrier on the east side of the south zone boundary along column line R7 and adjacent to the steam chase.

CONSEQUENCES OF DESIGN BASIS FIRE During a design basis fire, the installed smoke and heat detection systems will provide an early warning alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. The 3-h-rated north and west walls which border the radwaste and turbine buildings and the substantial, nonrated east reactor building exterior wall are adequate to contain a design basis fire. The automatic reactor building centerline suppression system and substantial construction of the drywell wall will preclude any potential fire propagation into area 1203 (zone 1203F) and area 1201, respectively. Due to the substantial construction, the installed suppression systems and the moderate combustible loading, propagation through the floor or ceiling is not considered probable. Fire propagation through the northeast and northwest stairwells is unlikely due to the minimal amount of combustibles in the immediate area.

In the unlikely event that propagation does occur, only other zones of area 1205 will be affected, thus ensuring that only one train of safe shutdown systems is damaged. Prompt detection and response combined with the utilization of the manual firefighting equipment available should be sufficient to extinguish a fire.

HNP-FHA-11 11.3-32 REV 28 11/10 FIRE ZONE 1205I This zone is not considered safety related.

DESCRIPTION Working Floor North Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11828

AREA 3,700 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Wood, plank, plywood, clothing, trash, rags Charcoal None Plastics Plastic, respirators, ladders Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3, NR; S-C/NR, Open; W, E-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings 2-OD/1205L; OP/1203; CH, OS/1205F, R - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.3-33 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete except for the west portion of the north wall which is a 3-h-rated fire barrier and the portion of the south boundary along column line R7 which is open to area 1203. The floor and ceiling are nonrated, reinforced concrete with an open stairwell and covered hatches to zones 1205F below and 1205R above. There are two open doorways to zone 1205L. See area 1205 for penetrations.

FIRE PROTECTION This zone is equipped with partial coverage smoke detection which provides an early warning alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. This zone is also equipped with hose stations and a portable CO2 fire extinguisher for manual firefighting. An automatic reactor building centerline suppression system is provided in the southeast portion of the zone in the open passage to area 1203.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire, the two open passageways create a fire propagation path to adjacent zone 1205L and area 1203. The automatic reactor building centerline suppression system in the southeast portion of the zone is designed to suppress or contain a fire and eliminate any potential for propagation to area 1203. The open entryway to adjacent zone 1205L is located in close proximity to the portion of zone 1203I protected by smoke detectors, so that immediate response to a fire is expected. The substantial construction, low combustible loading, installed detection and suppression systems, and likelihood of prompt plant fire brigade response preclude propagation of the design basis fire beyond the boundaries of this zone. In the unlikely event that propagation occurs to zone 1205L, it will result in no acceptable consequences on the ability to achieve safe shutdown.

HNP-FHA-11 11.3-34 REV 28 11/10 FIRE ZONE 1205L This zone is not considered safety related.

DESCRIPTION Reactor Water Cleanup (RWCU) Heat Exchanger Room Unit 1 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11828

AREA 1,926 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E, W-C/NR; S-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1203, 1205I, 1205M - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-35 REV 28 11/10 CONSTRUCTION The north, west, and east walls are nonrated, reinforced concrete except for the removable block shielding on the east wall around the RWCU heat exchangers. The south wall is the nonrated, reinforced concrete and steel drywell. The extreme southeast corner of this zone containing the RWCU pumps is separated from the balance of the zone by a partial height reinforced concrete shield wall, approximately 15 ft high which provides an effective heat shield to prevent propagation within this zone. The ceiling and floor are nonrated, reinforced concrete.

There are open doorways which access adjacent zones 1205I, 1205M, and 1203K. See area 1205 for penetrations.

FIRE PROTECTION This zone contains no detection, automatic suppression, or manual firefighting equipment; however, manual firefighting equipment consisting of hose stations and a portable CO2 fire extinguisher is available in adjacent zone 1205I.

CONSEQUENCES OF DESIGN BASIS FIRE Early detection of a fire in this zone is improbable; however, a fire in this zone is unlikely due to the negligible combustion loading. The only significant fire postulated for this zone would result from the introduction of controlled amounts of transient combustibles. Propagation of a fire resulting from the introduction of transient combustibles will not occur through the openings to zones 1203K and 1203I since the sprinkler systems in zones 1203K and 1203I are expected to actuate to prevent propagation. The substantial construction with limited penetrations and the negligible amount of combustibles preclude fire propagation beyond the boundaries of this zone.

HNP-FHA-11 11.3-36 REV 28 11/10 FIRE ZONE 1205M This zone is not considered safety related.

DESCRIPTION Cleanup Phase Separators Unit 1 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11828

AREA 488 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1205L - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-37 REV 28 11/10 CONSTRUCTION The north, east, and west walls of the zone are nonrated, reinforced concrete. Access to the zone is via an open doorway from zone 1205L in the east wall. Credit is taken for the substantial concrete construction of the south wall to provide separation of the north and south halves of the reactor building per an approved Appendix R exemption (see area 1205 text). The floor and ceiling are nonrated, reinforced concrete. See area 1205 for penetrations.

FIRE PROTECTION The zone contains no automatic fire suppression, detection, or manual firefighting equipment.

In the unlikely event of a fire in this zone, there is manual firefighting equipment consisting of a portable CO2 fire extinguisher and hose stations in zone 1205I, which can be accessed through adjacent zone 1205L. A hose stream can be provided to this zone using multiple lengths of fire hose.

CONSEQUENCES OF DESIGN BASIS FIRE The only fire postulated for this zone would involve controlled amounts of transient combustibles. In the unlikely event of a significant fire due to the introduction of transient combustibles, the open passageway in the west wall creates a fire propagation hazard to adjacent zone 1205L. However, due to the lack of fixed combustibles, the absence of any intervening combustibles in the adjacent zone and the extremely substantial construction of the balance of the zone boundaries, propagation of a fire outside of this zone is precluded.

HNP-FHA-11 11.3-38 REV 28 11/10 FIRE ZONE 1205N This zone is considered safety related.

DESCRIPTION HVAC Room Unit 1 Reactor Building - el 164 ft

DRAWING NUMBER(S) H-11828

AREA 3,305 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics Ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Pre-action (FC); Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers CO2 Detectors (type) Heat det (PC); Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; S, W-C/3; E-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1205Q; MH/1203; OH/1205F - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) A/1203

HNP-FHA-11 11.3-39 REV 28 11/10 CONSTRUCTION The south and west walls are reinforced concrete and are 3-h fire barriers. The south wall has a fire-rated Class A double door which accesses area 1203. The north wall is nonrated concrete and has an open doorway to zone 1205Q. The east wall, adjacent to the reactor building working floor, zone 1203K, is 3-h rated, reinforced concrete. The balance of the east wall is reinforced, nonrated concrete. The floor and ceiling are nonrated, reinforced concrete, except for the portion of the floor over the main steam chase, containing the main steam vent openings. These openings and the main steam blowout panels located in the west wall of this zone are exempted from the requirements for complete 3-h barriers (see exemptions). See area 1205 for penetrations.

FIRE PROTECTION The HVAC filters are provided with individual heat detection devices and water spray suppression systems in the filters. The zone is also equipped with an areawide linear heat detection system and a preaction sprinkler system actuated by the linear thermal detectors. Actuation of any of the detection or suppression systems, excluding the HVAC filter suppression system, results in both local and MCR alarms. A portable CO2 fire extinguisher is located in this zone and a hose station is available in nearby zone 1203K. An additional portable CO2 fire extinguisher is available in adjacent zone 1203I.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the full coverage detection system would assure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish the fire. A design basis fire would be concentrated at the HVAC charcoal filters. The filter water spray systems initiated by the fire brigade are expected to rapidly extinguish the fire and prevent propagation outside of the filter units. In the event that the water spray systems fail, the zone is also equipped with preaction sprinklers which are expected to extinguish a fire within the zone. The low fire loading, likelihood of early detection, the available automatic and manual suppression, and the lack of intervening combustibles preclude propagation through the open doorway or nonrated barriers to adjacent areas or zones.

HNP-FHA-11 11.3-40 REV 28 11/10 FIRE ZONE 1205Q This zone is considered safety related.

DESCRIPTION Standby Gas Filter Room Unit 1 Reactor Building - el 164 ft

DRAWING NUMBER(S) H-11828

AREA 796 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics Ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (PC); Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls W, N-C/3; S, E-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1205N - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-41 REV 28 11/10 CONSTRUCTION The south and east walls are nonrated, reinforced concrete. The north and west walls are reinforced concrete, reactor building exterior, 3-h-rated fire barriers. There is one open doorway on the west side of the south wall to zone 1205N. The floor and ceiling are nonrated, reinforced concrete. See area 1205 for penetrations.

FIRE PROTECTION The zone is equipped with full coverage linear heat detection and thermal detectors in the filter units which would provide an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The HVAC filters in this zone are equipped with water spray systems. The zone contains no manual firefighting equipment. The hose station in nearby zone 1203K is able to provide an effective hose stream to this zone if additional hose lengths are used. In addition, a portable CO2 fire extinguisher is available in adjacent zone 1205N.

CONSEQUENCES OF DESIGN BASIS FIRE

In the event of a design basis fire, the local heat detectors within the charcoal filters or the full coverage linear heat detection system in the zone are expected to provide an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. Due to the small quantities of fixed and transient combustibles and the substantial or rated construction, a design basis fire is not expected to propagate beyond this zone. The primary combustible in the zone is the HVAC charcoal filters. The water spray system initiated by the fire brigade is capable of extinguishing a fire of this type. The manual hose station available in zone 1203K and the portable CO2 extinguisher in adjacent zone 1205N provide adequate manual suppression capability to extinguish a fire.

HNP-FHA-11 11.3-42 REV 28 11/10 FIRE ZONE 1205R This zone is not considered safety related.

DESCRIPTION Working Floor North Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 7,361 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, paper, clothing, tape (cloth), trash, rags Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Rubber, solvent Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 30,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E, W-C/NR; S-C/NR-Open - Floors, Ceiling or Roof Concrete - Fixed Openings OP/1205S, U; OS, CH/1205I, Y; OD/1205T - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) NR/1205S

HNP-FHA-11 11.3-43 REV 28 11/10 CONSTRUCTION This zone consists of the entire north half of the l85-ft reactor building floor with the exception of the filter demineralizer room (zone 1205T) in the northwest corner. All the walls are reinforced concrete and nonrated except for the walls around the decontamination room, which are nonrated block. Part of the south zone boundary is the drywell which is nonrated, reinforced concrete and steel (exempted barrier). The balance of the south boundary is open on the east and west side of the drywell to zones 1205S and 1205U, respectively. A portion of the south boundary consists of the south wall of the decontamination room. The floor is nonrated, reinforced concrete with an open stairwell and covered equipment hatches down to zone 1205I.

The ceiling is nonrated, reinforced concrete with an open stairwell and covered equipment hatches up to zone 1205Y. There is an open doorway to zone 1205T. There are closed equipment hatches which access zones 1205I and 1205Y and a nonrated door in the block wall around the decontamination room, which accesses zone 1205S. See area 1205 for penetrations.

FIRE PROTECTION This zone is equipped with no automatic suppression or detection system; however, the south boundary is the edge of the wet pipe suppression systems in zones 1205S and 1205U. Hose stations and CO2 fire extinguishers are provided in the zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire is postulated to be a slow developing fire consisting primarily of fire retardant, IEEE-383 qualified cable insulation, and Class A combustibles. Propagation of the fire to adjacent zones 1205S and 1205U is precluded by the wet pipe suppression systems in these zones. The substantial construction with limited penetrations and the low combustible loading make it unlikely for a fire to propagate to zone 1205T or area 1609. The only potential propagation path through the floor or ceiling is the open stairwell. Due to the low fire loading, this is credible but unlikely. In the unlikely event that propagation to any of these adjacent zones or areas does occur, only one safe shutdown path will be affected. The manual firefighting equipment in the zone is adequate to extinguish the fire.

HNP-FHA-11 11.3-44 REV 28 11/10 FIRE ZONE 1205S This zone is not considered safety related.

DESCRIPTION Working Floor South Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 3,049 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood, plywood, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-B/NR, Open; S-C/3; E-C/NR; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OP/1205R; OS/1205Y; OH/1203, 1205Y; OD/1205W - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) NR/1205R; NR/1205W

HNP-FHA-11 11.3-45 REV 28 11/10 CONSTRUCTION The north side of this zone has a partial, nonrated block wall around the decontamination room.

There is a nonrated door in this wall which accesses zone 1205R. The remainder of the north boundary is open to zone 1205R. The east and west walls are reinforced concrete, nonrated reactor building exterior and fuel pool walls, respectively. There is a nonrated door in the east wall access to zone 1205W. The south wall is the reinforced concrete, reactor building exterior, 3-h-rated fire barrier. The floor and ceiling are reinforced concrete and nonrated. There is an open stairwell which accesses upper level zone 1205Y. An equipment hatch, which is open to zone 1205Y above and area 1203 below, is located in the center of this zone. There is an open doorway to zone 1205W. See area 1205 for penetrations.

FIRE PROTECTION This zone is not equipped with a fire detection system. The portion of the zone around the equipment hatch is equipped with a high density ring of fixed spray heads designed to prevent propagation either up or down through the hatch. The balance of the zone is equipped with a full coverage wet pipe suppression system. Manual firefighting equipment available in this zone consists of a hose station and a portable CO2 fire extinguisher.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire, actuation of the suppression systems in the zone will result in both local and MCR alarms to ensure prompt response by the plant fire brigade. The construction is substantial and the expected fire severity is sufficiently low to preclude fire propagation to adjacent zones 1205W and 1205R. The open equipment hatch and open hallway pose some threat of propagation to area 1203 and zone 1205Y and to zone 1205R, respectively. Propagation to zone 1205R or 1205Y is acceptable since both zones rely on path 2 for safe shutdown. However, the installed full coverage suppression system is expected to rapidly extinguish any fire which might occur. The automatic high density suppression system around the equipment hatch is designed to preclude propagation of a design basis fire through the hatch in either direction. Propagation is, therefore, not expected to occur. The manual firefighting equipment provided in this zone is adequate to extinguish any fire which may occur.

HNP-FHA-11 11.3-46 REV 28 11/10 FIRE ZONE 1205T This zone is considered safety related.

DESCRIPTION Filter Demineralizer Room Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 748 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH/1205X; OD/1205R - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.3-47 REV 28 11/10 CONSTRUCTION All the zone walls are reinforced concrete and nonrated. The floor and ceiling are nonrated, reinforced concrete. There is an open doorway in the east wall to zone 1205R. There are four reinforced concrete tank enclosures in this zone, with concrete covered hatches up to zone 1205X. See area 1205 for penetrations.

FIRE PROTECTION No automatic suppression or detection system coverage is provided in this zone; however, manual firefighting equipment consisting of hose stations and portable CO2 fire extinguishers is available from adjacent zone 1205R.

CONSEQUENCES OF DESIGN BASIS FIRE The open doorway in the east wall creates a fire propagation hazard to the adjacent zone; however, the substantial wall construction and the low combustible loading preclude propagation of a fire beyond the boundaries of this zone. The available firefighting equipment in the adjacent zone is adequate to extinguish the fire.

HNP-FHA-11 11.3-48 REV 28 11/10 FIRE ZONE 1205U This zone is not considered safety related.

DESCRIPTION Southwest Corridor Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 696 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-Open; S-C/3; E-C/NR; W-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1205W; OP/1205R - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) A/1203; NR/1205W

HNP-FHA-11 11.3-49 REV 28 11/10 CONSTRUCTION The north end of this zone is open to zone 1205R. The east wall consists of the drywell and fuel pool walls which are substantial nonrated, reinforced concrete and steel. The west wall is nonrated, reinforced concrete reactor building exterior wall with the exception of the south portion adjacent to area 1203 which is a 3-h fire barrier. There is a nonrated door in the west wall access to zone 1205W. The south wall is a 3-h rated barrier. The floor and ceiling are nonrated, reinforced concrete. There is a fire-rated Class A door to area 1203 and an open doorway to zone 1205W. See area 1205 for penetrations.

FIRE PROTECTION No early warning fire detection system is provided in this zone; however, full area coverage by wet pipe sprinklers is provided. Activation of the sprinkler system initiates an alarm both in the MCR and locally. In addition, a hose station and CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The open passageway and doorway create a fire propagation threat to adjacent zones 1205R and 1205W, respectively; however, the negligible combustible loading, the substantial construction with limited penetrations, and the automatic wet pipe sprinklers preclude propagation of a fire beyond the boundaries of this zone. Actuation of the suppression system will provide both local and MCR alarms to ensure prompt response by the plant fire brigade. The available firefighting equipment in this zone is adequate to extinguish the fire.

HNP-FHA-11 11.3-50 REV 28 11/10 FIRE ZONE 1205W This zone is not considered safety related.

DESCRIPTION Room South of Spent Fuel Pit Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 355 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E, W-C/NR; S-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OD/1205S, U - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) NR/1205S; NR/1205U

HNP-FHA-11 11.3-51 REV 28 11/10 CONSTRUCTION The north, east, and west walls of this zone are nonrated, reinforced concrete. The north wall is a portion of the refueling pool wall. The south wall is a reinforced concrete, 3-h fire barrier.

The floor and ceiling are nonrated, reinforced concrete. There are two doorways with nonrated grating doors, one to zone 1205S and one to zone 1205U in the east and west walls, respectively. See area 1205 for penetrations.

FIRE PROTECTION There is no detection or automatic suppression system in the zone. A portable CO2 fire extinguisher is located in this zone and hose stations are located in adjacent zones 1205S and 1205U.

CONSEQUENCES OF DESIGN BASIS FIRE The only fire postulated for this zone would involve controlled amounts of transient combustibles. In the unlikely event of a fire in this zone due to the introduction of transient combustibles, the open doorways in the east and west walls of this zone create a fire propagation possibility to the adjacent zones. However, the lack of fixed combustibles, the automatic wet pipe suppression systems in these adjacent zones, and the substantial construction preclude propagation of the fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zones is adequate to extinguish the fire.

HNP-FHA-11 11.3-52 REV 28 11/10 FIRE ZONE 1205X This zone is not considered safety related.

DESCRIPTION Stack Monitoring Room Unit 1 Reactor Building - el 203 ft

DRAWING NUMBER(S) H-11830

AREA 2,121 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Plank, plywood, clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; S-C/3; E-C, S/NR; W-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH/1205T, 0201 - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) B/1203

HNP-FHA-11 11.3-53 REV 28 11/10 CONSTRUCTION All the zone walls are reinforced concrete and nonrated except the south wall and the west wall adjacent to the reactor building stairwell, zone 1203I, which is a 3-h fire barrier. The east wall consists of the nonrated but substantially constructed dryer/separator storage pool, drywell, and refuel pool walls. The west wall is reactor building exterior wall. The floor and ceiling are nonrated, reinforced concrete with concrete covered hatches to zone 1205T and area 0201.

There is a fire-rated Class B door in the west wall to zone 1203I. See area 1205 for penetrations.

FIRE PROTECTION No manual firefighting equipment, detection or automatic suppression systems are provided in this zone; however, an effective hose stream can be provided to this zone using multiple hose lengths from the hose station provided in zone 1205U. A portable fire extinguisher is available in adjacent zone 1203I.

CONSEQUENCES OF DESIGN BASIS FIRE Early detection of a fire in this zone is not likely. However due to the extremely low combustible loading and substantial wall construction, propagation of the design basis fire outside of the zone boundaries is not credible.

HNP-FHA-11 11.3-54 REV 28 11/10 FIRE ZONE 1205Y This zone is considered safety related.

DESCRIPTION Working Floor Unit 1 Reactor Building - el 203 ft

DRAWING NUMBER(S) H-11830, H-11831

AREA 7,545 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, paper, clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 33,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls E, N-C/NR; S-C/3, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH, SD/0201; OS, OH/1205S; OS/1205R - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone #) NR/0201

HNP-FHA-11 11.3-55 REV 28 11/10 CONSTRUCTION All the zone walls are reinforced concrete and nonrated except for the south wall which is 3-h rated. The west wall consists of the nonrated but substantially constructed dryer/separator pool, the drywell, and the refuel pool walls. The remaining walls are reactor building exterior walls.

The floor is nonrated, reinforced concrete with two open stairwells, one down to zone 1205S and one down to zone 1205R. There is also an open hatch down to zone 1205S. The ceiling is nonrated, reinforced concrete with an open stairwell and a closed hatch up to area 0201. The ceiling consists of the refueling floor, which assures that all penetrations in the ceiling are closed and airtight sealed. See area 0201 for an evaluation of this area boundary. The stairwell is enclosed in a block "doghouse" on the 228-ft elevation with a nonrated door. See area 1205 for penetrations.

FIRE PROTECTION There are no detection or automatic suppression systems in this zone. Manual firefighting equipment consists of hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the extremely substantial construction of the zone boundaries, the only credible propagation paths for a design basis fire in this zone are through the open stairwells and hatches. All of the combustibles in this zone are concentrated toward the center of the zone, away from these potential propagation paths. Propagation up through the stairwell to area 020l is not considered credible as discussed in the text for area 0201. Propagation down through the hatches and stairwells is unlikely due to the lack of intervening combustibles. In the event that propagation does occur through the hatch or stairwell in the south part of this zone, actuation of the hatch water spray system and/or general area wet pipe sprinklers on the 185-ft elevation is expected. Actuation of these suppression systems will provide both local and MCR alarms to ensure prompt response by the plant fire brigade. Propagation through these openings or the stairwell in the north part of the zone will affect only other zones of area 1205 which assures damage to only one safe shutdown path.

HNP-FHA-11 11.3-56 REV 28 11/10 FIRE ZONE 1205Z This zone is considered safety related.

DESCRIPTION HPCI Pump Room Unit 1 Reactor Building - Below el 130 ft

DRAWING NUMBER(S) H-11826

AREA 1,388 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC); Water spray (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, W-C/3; S, E-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH/Outside - Penetrations See area 1205 text - Doors (Fire-rated Class/Zone no.) NR/1205B

HNP-FHA-11 11.3-57 REV 28 11/10 CONSTRUCTION The north and west walls are below grade, concrete reactor building exterior walls and are 3-h-rated fire barriers. The south and east walls are reinforced concrete and nonrated. The floor and ceiling are reinforced concrete and nonrated. There is one nonrated door in the south wall which accesses zone 1205B. A concrete hatch in the ceiling accesses the outside. See area 1205 for penetrations.

FIRE PROTECTION This zone is not equipped with any early warning fire detection system. A full coverage wet pipe sprinkler suppression system is provided in this zone as well as a water spray system with directional water spray nozzles to provide spray onto the nonrated south wall. Actuation of the full coverage sprinkler system results in an alarm both locally and in the MCR. In addition, a hose station and a portable CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible propagation of the design basis fire is through the south wall of this zone.

This propagation is acceptable since only other zones of area 1205 would be damaged, thereby limiting fire damage to one safe shutdown path. In the event of a design basis fire, the substantial or rated wall construction coupled with the limited number of penetrations would limit the potential for fire propagation to adjacent areas or zones. The wet pipe sprinkler system is expected to activate during a fire, alarming both locally and in the MCR to ensure prompt response by the plant fire brigade. In addition, the directional spray nozzles are expected to prevent the propagation of fire through the south wall. The manual firefighting equipment provided is adequate to control a fire in the zone.

HNP-FHA-11 11.4-1 REV 28 11/10 FIRE AREA 1301 This area is not considered safety related.

DESCRIPTION Unit 1 Radwaste Building Radwaste Building - All Elevations

DRAWING NUMBER(S) H-11839, H-11840

AREA 21,135 ft2

COMBUSTIBLES Oil and Grease Lube oil, grease Cable Cable insulation Class A Clothing, trash, rags, wood, paper, tape (cloth), files Charcoal Charcoal Plastics Plastic, ladders, PVC Miscellaneous Rubber, resin Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Dry pipe; water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,E,W-C/NR;W-C/3

- Floors, Ceiling or Roof Concrete

- Fixed Openings OP/Outside

- Penetrations See text

- Doors (Fire-rated Class/Zone #) A/1101,1105,1205;5-NR/outside;W/1302

HNP-FHA-11 11.4-2 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and nonrated with the exception of the west wall which is 3-h rated. The south wall is adjacent to the 3-h-rated reactor building wall. The floor and the ceiling are nonrated, reinforced concrete. There are fire-rated Class A doors that communicate with fire areas 1101, 1104, and 1205. There are five nonrated doors to the outside; a double door on the 130-ft elevation in the north wall, a door on the 144-ft elevation in the north wall to the roof, and three steel radiation shield doors which provide access to the drum storage area.

A nonrated, waterproof, submarine-type door to area 1302 is located in the east wall at the 108-ft elevation.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with smoke detection in the radwaste control room and the 132-ft elevation drum filling and capping hallway which provides both local and MCR alarms to ensure prompt response by the plant fire brigade. The exhaust filter room has heat detectors and a water spray system associated with the filters. The drywaste storage area at the 132-ft elevation is equipped with a dry pipe sprinkler system. Manual firefighting equipment consists of hose stations and portable CO2 fire extinguishers throughout the area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area may propagate among zones of the area through the open and nonrated zone boundaries, particularly in the few places where local concentrations of combustibles are located near openings between zones. This propagation is acceptable within the area since no safe shutdown circuits or components are located in the area. The effects of a fire on the radwaste systems are bounded by the analysis as described in the HNP-2-FSAR.

No significant radioactive releases were determined to result from exposure of these systems to fire. All radwaste building exterior walls are approximately 2 ft thick. The design basis fire is not considered capable of breaching these area boundaries. In addition, all sections of this area which contain specific fire hazards (charcoal filters) or high concentrations of combustibles (drywaste storage area, radwaste control room) are equipped with detection, suppression, or both. The combustible loading in many zones is negligible and is very low throughout the area.

HNP-FHA-11 11.4-3 REV 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE (cont'd)

Although the internal walls are nonrated and contain openings between zones, they are of substantial, reinforced concrete construction. Actuation of any of the detection or suppression systems, expected to occur in the incipient stages of a fire, will provide both local and MCR alarms to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish any fire which might occur. Therefore, propagation of a fire among zones is considered unlikely; and propagation outside of the area is not credible. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.4-4 REV 28 11/10 FIRE ZONE 1301A This zone is not considered safety related.

DESCRIPTION West Condensate Phase Separator Room Unit 1 Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 357 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-5 REV 28 11/10 CONSTRUCTION The walls of the zone are reinforced concrete and are nonrated with the exception of the west wall which is 3-h rated. The floor and the ceiling are nonrated, reinforced concrete. There is an open doorway in the south wall to zone 1301G. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system; however, a hose station and portable CO2 fire extinguisher are located in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction prelude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 1301G is adequate to extinguish any fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-11 11.4-6 REV 28 11/10 FIRE ZONE 1301B This zone is not considered safety related.

DESCRIPTION East Condensate Phase Separator Room Unit 1 Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 368 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-7 REV 28 11/10 CONSTRUCTION The walls of this zone are reinforced concrete and are nonrated. The floor and the ceiling are also nonrated, reinforced concrete. There is an open doorway in the south wall to zone 1301G.

See area 1301 for penetrations.

FIRE PROTECTION There is no automatic suppression or detection system or manual firefighting equipment available in this zone. However, a hose station and portable CO2 fire extinguisher are provided in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in the adjacent zone 1301G is adequate to extinguish any fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-11 11.4-8 REV 28 11/10 FIRE ZONE 1301C This zone is not considered safety related.

DESCRIPTION Waste Sludge and Spent Resin Tank and Pump Rooms Unit 1 Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 552 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-9 REV 28 11/10 CONSTRUCTION The walls are reinforced concrete and are nonrated. The two rooms (waste sludge tank room and spent resin tank room) in this zone are separated by a nonrated wall. The floor and the ceiling are nonrated reinforced concrete. There is an open doorway in the south wall to zone 1301G. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, a hose station and portable CO2 fire extinguisher are available in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The low fire loading and substantial construction preclude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 1301G is adequate to extinguish any fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-11 11.4-10 REV 28 11/10 FIRE ZONE 1301D This zone is not considered safety related.

DESCRIPTION Chemical Waste and Floor Drain Collection Tank Room Unit 1 Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 540 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-11 REV 28 11/10 CONSTRUCTION The walls are constructed of reinforced concrete and are nonrated. The east and west walls are partial-height walls, open at the top to zones 1301F and 1301E, respectively. The floor and ceiling are nonrated, reinforced concrete. This zone is accessed from zone 1301G through an open doorway in the north wall. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, a hose station and portable CO2 fire extinguisher are available in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available fire fighting equipment in the adjacent zone 1301G is adequate to extinguish a fire in this zone.

HNP-FHA-11 11.4-12 REV 28 11/10 FIRE ZONE 1301E This zone is not considered safety related.

DESCRIPTION Waste Collector Tank Room Unit 1 Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 378 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-13 REV 28 11/10 2ONSTRUCTION The north, south and east walls of this zone are nonrated, reinforced concrete walls. The west wall is a 3-h-rated, reinforced concrete wall. The east wall is a partial-height wall, open at the top to zone 1301D. The floor and ceiling are nonrated, reinforced concrete. There is an open doorway in the north wall to zone 1301G. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, a hose station and portable CO2 fire extinguisher are provided in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible products. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 1301G is adequate to extinguish a fire in this zone.

HNP-FHA-11 11.4-14 REV 28 11/10 FIRE ZONE 1301F This zone is not considered safety related.

DESCRIPTION Waste Sludge and Sample Tank Room Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 2,255 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 42,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301G

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) W/1302

HNP-FHA-11 11.4-15 REV 28 11/10 CONSTRUCTION The north, south, east, and west walls of this zone are nonrated, reinforced concrete. The south end of the west wall is open at the top to zone 1301D. This zone also communicates with zone 1301G and area 1302 via an open doorway in the west wall and a nonrated water tight door in the east wall, respectively. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with any fire detection or automatic suppression system. However, a portable CO2 fire extinguisher and hose station are available in adjacent zone 1301G.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this zone involves only cable which is predominantly IEEE-383 qualified. The design basis fire would, therefore, develop and propagate through the zone very slowly. The low combustible loading and substantial construction of the zone minimize the possibility of a fire propagating to other zones. The fire may be detected in the early stages due to the slow development and personnel traffic in the vicinity. The manual firefighting equipment available in this zone and adjacent zones is adequate to extinguish the fire.

HNP-FHA-11 11.4-16 REV 28 11/10 FIRE ZONE 1301G This zone is not considered safety related.

DESCRIPTION Working Floor Radwaste Building - el 108 ft

DRAWING NUMBER(S) H-11839

AREA 2,396 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 80,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301A, B, C, D, E, F; OS/1301J

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) A/1101

HNP-FHA-11 11.4-17 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this zone are nonrated, reinforced concrete. The west wall is a reinforced concrete 3-h fire barrier. The north wall communicates with zones 1301A, 1301B, and 1301C via open doorways. The east wall has an open doorway to zone 1301F and the south wall contains open doorways to zone 1301D and zone 1301E. A stairway also communicates with zone 1301J. There is a fire-rated Class A door located in the west wall, accessing area 1101. The ceiling and floor are nonrated, reinforced concrete. See area 1301 for penetrations.

FIRE PROTECTION This area is not equipped with any fire detection or automatic suppression system. However, manual firefighting equipment in this zone consists of portable CO2 fire extinguishers and a hose station.

CONSEQUENCES OF DESIGN BASIS FIRE The combustibles in this zone consist of localized concentrations (dress out areas, waste oil drums at sumps) which are separated by significant distance (typically greater than 20 ft). The adjacent zones at the 108-ft elevation all contain negligible combustible loadings. Propagation of the design basis fire among these zones is, therefore, unlikely.

The open stairwell and nonrated ceiling of the zone are credible propagation paths; however, the migration of combustion products through these paths would likely result in actuation of the detection systems located in zones 1301H and 1301J, directly above this zone, or in detection by the continuous staffing in zone 1301H. The resulting local and MCR alarms would ensure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish the fire.

HNP-FHA-11 11.4-18 REV 28 11/10 FIRE ZONE 1301H This zone is not considered safety related.

DESCRIPTION Unit l Radwaste Control Room Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11839

AREA 776 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash, files Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers Halon Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301I

HNP-FHA-11 11.4-19 REV 28 11/10 CONSTRUCTION The east, west, north, and south walls of the radwaste control room are reinforced concrete and nonrated except for the west wall which is 3 h rated. The south wall is adjacent to the 3-h-rated reactor building wall. The floor and ceiling are reinforced, nonrated concrete. A nonrated door is located on the north wall of the radwaste control room communicating with zone 1301I. See area 1301 for penetrations.

FIRE PROTECTION This area is equipped with smoke detectors which provide an early warning alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. Manual firefighting equipment consists of a halon extinguisher beside the door inside zone 1301H and a CO2 portable fire extinguisher available from adjacent zone 1301I. In addition, a hose station is available in adjacent zone 1301H.

CONSEQUENCES OF DESIGN BASIS FIRE The detectors located in this zone are expected to detect the combustion products from an incipient fire and alert the personnel in the radwaste control room and in the MCR to ensure prompt response by the plant fire brigade. The available firefighting equipment provided in this and adjacent zones is adequate to extinguish the fire.

In addition, the presence of an operator in this zone at all times allows for rapid detection and suppression of a fire. The likelihood of early detection and substantial construction of the walls precludes the propagation of the design basis fire beyond the boundaries of this zone.

HNP-FHA-11 11.4-20 REV 28 11/10 FIRE ZONE 1301I This zone is not considered safety related.

DESCRIPTION Chemical Treatment Room Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11839

AREA 700 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber, resin Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 90,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301J

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) A/1104; NR/1301H

HNP-FHA-11 11.4-21 REV 28 11/10 CONSTRUCTION All walls of the zone are nonrated, reinforced concrete with the exception of the west wall which is 3-h rated. The east wall is separated from the main hall area (1301J) by two open doorways and a fire-rated Class A door separates this zone from area 1104. A nonrated door separates this zone from zone 1301H. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with fire detection or automatic suppression systems. Manual firefighting equipment in this zone consists of a portable CO2 fire extinguisher. Additional extinguishers and a hose station are available in adjacent zone 1301J.

CONSEQUENCES OF DESIGN BASIS FIRE The personnel traffic in this area may provide early detection of a fire. Available manual firefighting equipment is adequate to extinguish the fire. In the event a fire did propagate to zone 1301J (drywaste storage), there is a dry pipe sprinkler system in that zone that would provide immediate suppression. Any propagation of combustion products to either adjacent zone (1301J, 1301H) would likely result in actuation of early warning fire alarms, both locally and in the MCR, by the installed smoke detection systems in these zones. These alarms would ensure prompt response by the plant fire brigade. Due to the low combustible loading, the likelihood of early fire detection and the substantial construction of the walls, propagation of a fire to other zones is unlikely.

HNP-FHA-11 11.4-22 REV 28 11/10 FIRE ZONE 1301J This zone is not considered safety related.

DESCRIPTION Working Floor Radwaste Building - el 132 ft

DRAWING NUMBER(S) H-11839

AREA 5,687 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, paper, clothing, tape (cloth), trash, rags Charcoal None Plastics Plastic, PVC Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Dry pipe (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1301I; OS/1301G, M

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) A/1205; 4-NR/Outside

HNP-FHA-11 11.4-23 REV 28 11/10 CONSTRUCTION The walls of the main working floor zone of the radwaste building at 132-ft elevation are reinforced concrete except the part of the west wall adjacent to zone 1301I which is a block wall. Three small, heavy steel radiation shield "doors" are provided in the northeast and east walls for access to the drum storage area. All walls are nonrated. The south wall contains a fire-rated Class A door which accesses area 1205. The west wall has open doorways to zone 1301I. The north wall has a nonrated vault-type double door which accesses the outside. The floor and ceiling are nonrated, reinforced concrete. The floor and ceiling have stairs connecting zones 1301G below and 1301M above. See area 1301 for penetrations.

FIRE PROTECTION The drum fill and cap area is equipped with smoke detectors which provide an early warning alarm both locally and in the MCR. The dry waste storage area (northwest end of the zone) is equipped with a dry pipe suppression system. Actuation of the sprinklers also results an alarm both locally and in the MCR. Manual firefighting equipment in this zone consists of portable CO2 fire extinguishers and a hose station.

CONSEQUENCES OF DESIGN BASIS FIRE The drywaste storage section of this zone contains the bulk of the combustibles in the zone. A fire originating in this section is expected to be rapidly extinguished by the installed dry pipe sprinkler system. In addition, alarms resulting from actuation of the suppression system over the drywaste storage area or the smoke detectors in the drum fill and cap area and personnel traffic in this zone ensure early fire detection and prompt response by the plant fire brigade.

The open stairwells and doorways represent a fire propagation possibility to adjacent zones 1301G, 1301M, and 1301I, respectively; however, the low combustible loading and the likelihood of early fire detection preclude fire propagation. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-11 11.4-24 REV 28 11/10 FIRE ZONE 1301K This zone is not considered safety related.

DESCRIPTION Radwaste Exhaust Filter Room Radwaste Building - el 144 ft

DRAWING NUMBER(S) H-11840

AREA 1,015 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301M

HNP-FHA-11 11.4-25 REV 28 11/10 CONSTRUCTION The north, south, east, and west walls are nonrated, reinforced concrete walls except the west wall which is 3-h rated. The south wall is adjacent to the 3-h-rated reactor building wall. A nonrated double door in east wall connects this zone with the l44-ft elevation radwaste working floor (1301M). See area 1301 for penetrations.

FIRE PROTECTION This zone is equipped with heat detectors in the charcoal filters which provide an early warning alarm both locally and in the MCR. Fire brigade personnel will actuate a water spray system to suppress a fire in the filters. The zone is not equipped with any manual firefighting equipment.

A hose station and CO2 portable fire extinguishers are available in adjacent zone 1301M.

CONSEQUENCES OF DESIGN BASIS FIRE The major combustible in this zone is charcoal, contained in the filters which are equipped with internal heat detectors and suppression systems. The heat detectors are expected to provide an early warning alarm both locally and in the MCR, to ensure prompt response by the plant fire brigade. The suppression system provided in the filter units will be initiated by the fire brigade to suppress the fire. The manual firefighting equipment provided in the adjacent zone 1301M is also available. The low fire loading and substantial wall construction precludes the propagation of the fire beyond the boundaries of this zone.

HNP-FHA-11 11.4-26 REV 28 11/10 FIRE ZONE 1301L This zone is not considered safety related.

DESCRIPTION Hopper B Room Unit 1 Radwaste Building - el 144 ft

DRAWING NUMBER(S) H-11840

AREA 238 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301M

HNP-FHA-11 11.4-27 REV 28 11/10 CONSTRUCTION The zone walls are reinforced concrete and nonrated. The ceiling and floor are also reinforced, nonrated concrete. There is a nonrated door in the west wall to zone 1301M. See area 1301 for penetrations.

FIRE PROTECTION This zone contains no manual or automatic detection or suppression system. However, there are portable CO2 fire extinguishers and a hose station available in adjacent zone 1301M for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 1301M is adequate to extinguish any fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-11 11.4-28 REV 28 11/10 FIRE ZONE 1301M This zone is not considered safety related.

DESCRIPTION Southeast Radwaste Building Unit 1 Radwaste Building - el 144 ft

DRAWING NUMBER(S) H-11840

AREA 2,101 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 39,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/1301J, P

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301K, L, N, Outside

HNP-FHA-11 11.4-29 REV 28 11/10 CONSTRUCTION The zone walls are reinforced, nonrated concrete. The floor and ceiling are also reinforced, nonrated concrete. The west wall contains a nonrated double door to zone 1301K. This zone communicates with zone 1301J at the 132-ft elevation and zone 1301P at the 156-ft elevation via the stairway provided in the southwest corner of this zone. There is a nonrated door to zone 1301N, a nonrated door to zone 1301L, and a nonrated door in the north wall that accesses the roof of the radwaste building. See area 1301 for penetrations.

FIRE PROTECTION There is no detection or automatic suppression system in the zone. However, a hose station and portable CO2 fire extinguishers are provided in the zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The low fire loading and substantial construction precludes fire propagation beyond the boundaries of this zone. The available firefighting equipment in this zone is adequate to extinguish the fire.

HNP-FHA-11 11.4-30 REV 28 11/10 FIRE ZONE 1301N This zone is not considered safety related.

DESCRIPTION Hopper A Room Unit 1 Radwaste Building - el 144 ft

DRAWING NUMBER(S) H-11840

AREA 224 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301M

HNP-FHA-11 11.4-31 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete. The floor and ceiling are also reinforced, nonrated concrete. There is a nonrated door in the east wall to zone 1301M. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with detection or suppression systems or manual firefighting equipment. A hose station and portable CO2 fire extinguishers are available in adjacent zone 1301M.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 1301M is adequate to extinguish any fire which resulted from the introduction of transient combustibles.

HNP-FHA-11 11.4-32 REV 28 11/10 FIRE ZONE 1301P This zone is not considered safety related.

DESCRIPTION Working Floor Unit 1 Radwaste Building - el 156 ft-4 in.

DRAWING NUMBER(S) H-11840

AREA 1,975 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH, OS/1301M

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301Q, R, S

HNP-FHA-11 11.4-33 REV 28 11/10 CONSTRUCTION The zone walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. A nonrated double door in the west wall provides access to zone 1301Q.

Two nonrated doors provide access to zones 1301R and 1301S. A stairway in the southwest portion of the zone communicates with zone 1301M at the 144-ft elevation. See area 1301 for penetrations.

FIRE PROTECTION This zone is not equipped with detection or automatic suppression systems. However, a hose station and portable CO2 fire extinguishers are provided in the zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The insignificant fire loading and substantial construction preclude propagation of a design basis fire beyond the boundaries of this zone. The available firefighting equipment in this zone is adequate to extinguish any fire which may occur as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-34 REV 28 11/10 FIRE ZONE 1301Q This zone is not considered safety related.

DESCRIPTION Ventilation Room Unit 1 Radwaste Building - el 156 ft-4 in.

DRAWING NUMBER(S) H-11840

AREA 1,025 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 28,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls E, S, N-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/outside

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301P

HNP-FHA-11 11.4-35 REV 28 11/10 CONSTRUCTION The north, south, east, and west walls are nonrated, reinforced concrete with the exception of the west wall which is 3-h rated. The floor and ceiling are also reinforced, nonrated concrete.

There is a nonrated double door in the east wall to zone 1301P. See area 1301 for penetrations.

FIRE PROTECTION No automatic detection or suppression systems or manual firefighting equipment is provided in this zone. A hose station and portable CO2 fire extinguishers are provided in adjacent zone 1301P.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in the adjacent zones is adequate to extinguish the fire.

HNP-FHA-11 11.4-36 REV 28 11/10 FIRE ZONE 1301R This zone is not considered safety related.

DESCRIPTION Centrifuge Room - A Radwaste Building - el 156 ft-4 in.

DRAWING NUMBER(S) H-11840

AREA 261 ft2

COMBUSTIBLES Oil & Grease Grease Cable None Class A Clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 51,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text - Doors (Fire-rated Class/Zone #) NR/1301P

HNP-FHA-11 11.4-37 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete. A nonrated door is provided in the east wall of this zone to zone 1301P. See area 1301 for penetrations.

FIRE PROTECTION No automatic suppression, fire detection, or manual firefighting equipment is provided in this zone. However, a hose station and portable CO2 fire extinguishers are provided in adjacent zone 1301P.

CONSEQUENCES OF DESIGN BASIS FIRE The low fire loading and substantial construction of the concrete walls preclude the possiblity of a design basis fire from propagating beyond the boundaries of this zone. The manual firefighting equipment (hose station and CO2 portable fire extinguishers) provided in the adjacent zone are adequate to suppress a fire in this zone.

HNP-FHA-11 11.4-38 REV 28 11/10 FIRE ZONE 1301S This zone is not considered safety related.

DESCRIPTION Centrifuge Room - B Radwaste Building - el 156 ft-4 in.

DRAWING NUMBER(S) H-11840

AREA 287 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Clothing, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 47,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR

- Floors, Ceiling or Roof Concrete

- Fixed Openings None

- Penetrations See area 1301 text

- Doors (Fire-rated Class/Zone #) NR/1301P

HNP-FHA-11 11.4-39 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete walls. The floor and ceiling are nonrated, reinforced concrete. A nonrated door is provided in the west wall of this zone to zone 1301P.

See area 1301 for penetrations.

FIRE PROTECTION No automatic suppression, fire detection, or manual firefighting equipment is provided in this zone. However, a hose station and portable CO2 fire extinguishers are provided in the adjacent zone 1301P.

CONSEQUENCES OF DESIGN BASIS FIRE The low fire loading and substantial construction of the concrete walls preclude the possibility of a design basis fire from propagating beyond the boundaries of this zone. The manual firefighting equipment (hose station and portable CO2 fire extinguishers) provided in the adjacent zone will be adequate to suppress a fire in this zone.

HNP-FHA-11 11.4-40 REV 28 11/10 FIRE AREA 1302 This area is not considered safety related.

DESCRIPTION Unit l Radwaste Addition Building All elevations

DRAWING NUMBER(S) H-11841

AREA 9,274 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, clothing, trash Charcoal Charcoal Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings OP, CH/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) 3-NR/Outside; NR/1301

HNP-FHA-11 11.4-41 REV 28 11/10 CONSTRUCTION All the walls are reinforced concrete and nonrated. The floor and ceiling are also nonrated, reinforced concrete. There are four nonrated doors, two vault-type doors in the north wall, one in the south wall communicating with the outside at el 132 ft, and one watertight door in the west wall to area 1301 at el 108 ft.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is not equipped with any detection or automatic suppression systems except for heat detector actuated automatic water spray systems in the filters (zone 1302J) at el 150 ft. Manual firefighting equipment in this area includes hose stations and portable CO2 fire extinguishers.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area may propagate among zones of the area through the open and nonrated zone boundaries, particularly in the places where local concentrations of combustibles are located near openings between zones. This propagation is acceptable within the area since no safe shutdown circuits or components are located in the area. The effects of a fire on the radwaste systems are bounded by the analysis described in the Unit 2 FSAR. No significant radioactive releases were determined to result from exposure of these systems to fire. All radwaste addition building exterior walls are approximately 2-ft thick. The design basis fire is not considered capable of breaching these area boundaries. In addition, the sections of this area which contain specific fire hazards (charcoal filters) are equipped with detection systems, automatic suppression systems, or both. The combustible loading in many zones is negligible and is very low throughout the area. Although the internal walls are nonrated and contain openings between zones, they are of substantial reinforced concrete construction. The available manual firefighting equipment is adequate to extinguish any fire that might occur.

Therefore, propagation of a fire among zones is considered unlikely and propagation outside of the area is not credible. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.4-42 REV 28 11/10 FIRE ZONE 1302A This zone is not considered safety related.

DESCRIPTION Concentrated Radwaste Pump Room Radwaste Addition Building - el 108 ft

DRAWING NUMBER(S) H-11841

AREA 205 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1302C - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-43 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. The north and west walls are exterior walls.

This zone communicates with zone 1302C via an open doorway in the south wall. The floor and ceiling are nonrated, reinforced concrete. See area 1302 for penetrations.

FIRE PROTECTION There is no fire detection, automatic suppression, or manual firefighting equipment in this zone; however, a hose station and portable CO2 fire extinguisher are provided in adjacent zone 1302C.

CONSEQUENCES OF DESIGN BASIS FIRE The negligible combustible loading and substantial construction of the concrete walls preclude the possibility of a design basis fire from propagating to other zones. The available firefighting equipment in adjacent zone 1302C is adequate to extinguish a fire.

HNP-FHA-11 11.4-44 REV 28 11/10 FIRE ZONE 1302B This zone is not considered safety related.

DESCRIPTION Chemical Waste Neutralizer Tank Room Unit 1 Radwaste Addition Building

DRAWING NUMBER(S) H-11841

AREA 400 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings OD/1302E - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.4-45 REV 28 11/10 CONSTRUCTION The zone walls are reinforced concrete and are nonrated. The floor and ceiling are also nonrated, reinforced concrete. There is an open doorway in the west wall to zone 1302E. See area 1302 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression systems or manual firefighting equipment. However, a hose station and portable CO2 fire extinguisher are available in nearby zone 1302C, and a hose station is available in adjacent zone 1302E.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible combustible loading. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The open doorway in the west wall creates a fire propagation hazard to the adjacent zone; however, the negligible combustible loading reduces the probability of propagation of the fire to the adjacent zone. The available firefighting equipment in adjacent zones 1302C and 1302E is adequate to extinguish any fire that occurs as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-46 REV 28 11/10 FIRE ZONE 1302C This zone is not considered safety related.

DESCRIPTION Chemical Waste Sample Tank Room Radwaste Addition Building - el 108 ft

DRAWING NUMBER(S) H-11841

AREA 1935 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 48,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/1302F; OD/1302A, E, D - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) W/1301

HNP-FHA-11 11.4-47 REV 28 11/10 CONSTRUCTION All zone walls are constructed of nonrated, reinforced concrete. Part of the east wall communicates with zone 1302D via an open doorway. The north wall of this zone contains doorways open to zones 1302A and 1302E. The zone also communicates with zone 1302F via open stairways. There is a nonrated, watertight, submarine-type door in the west wall communicating with zone 1301F. The floor and ceiling are nonrated, reinforced concrete. See area 1302 for penetrations.

FIRE PROTECTION There is no automatic suppression or fire detection system in the zone. The manual firefighting equipment consists of a hose station and portable CO2 fire extinguisher.

CONSEQUENCES OF DESIGN BASIS FIRE The majority of the combustibles in this zone are located in the hot tool room which is surrounded by concrete walls with an open doorway to the rest of the rooms in the zone. The low combustible loading and substantial construction of the walls precludes a design basis fire from propagating to other zones. Although this zone communicates with other zones through open doorways, hot gases from a fire in this zone will be significantly diluted by passage through the labyrinth propagation path before reaching other zones. Therefore, a fire is not likely to propagate. The substantial reinforced concrete, below grade, radwaste addition building exterior wall on the west side of this zone, and the nonrated, watertight door in the wall are capable of withstanding the less than 30-min duration of the design basis fire without being breached. The available fire protection is adequate to extinguish a fire.

HNP-FHA-11 11.4-48 REV 28 11/10 FIRE ZONE 1302D This zone is not considered safety related.

DESCRIPTION Concentrator Tank Room Unit l Radwaste Addition Building - el 108 ft

DRAWING NUMBER(S) H-11841

AREA 100 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) OD/1302C

HNP-FHA-11 11.4-49 REV 28 11/10 CONSTRUCTION The zone walls are reinforced, nonrated concrete. The floor and ceiling are also reinforced, nonrated concrete. There is an open doorway in the west wall to zone 1302C. See area 1302 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression systems or manual firefighting equipment. However, a hose station and portable CO2 fire extinguisher are provided in adjacent zone 1302C.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible combustible loading. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The open passageway in the west wall creates a fire propagation hazard to the adjacent zone; however, the low combustible loading and the substantial construction preclude propagation of the fire to the adjacent zone.

The available firefighting equipment in adjacent zone 1302C is adequate to extinguish any fire which occurred as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-50 REV 28 11/10 FIRE ZONE 1302E This zone is not considered safety related.

DESCRIPTION Chemical Waste Neutralizer Pump Room and Dumbwaiter Hall Unit l Radwaste Addition Building - el 108 ft

DRAWING NUMBER(S) H-11841

AREA 207 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/1302B, C; OP/1302L - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-51 REV 28 11/10 CONSTRUCTION The zone walls are reinforced, nonrated concrete walls. The floor and the ceiling are also nonrated, reinforced concrete. This zone communicates with zones 1302B and 1302C through open doorways and with zone 1302L above this zone through the dumbwaiter opening. See area 1302 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or automatic suppression systems; however, the zone is provided with a hose station. In addition, a hose station and portable CO2 fire extinguisher are available in adjacent zone 1302C.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible combustible loading. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The open doorways in the east and south walls create a fire propagation hazard to the adjacent zones 1302B and 1302C; however, the negligible combustible loading and substantial construction preclude propagation of the fire to the adjacent zone. The available manual firefighting equipment in this and the adjacent zones is adequate to extinguish any fire which occurs as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-52 REV 28 11/10 FIRE ZONE 1302F This zone is not considered safety related.

DESCRIPTION Working Floor Radwaste Addition Building - el 132 ft

DRAWING NUMBER(S) H-11841

AREA 1,985 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 40,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/1302C, J - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) NR/outside, 1302H, 1302L

HNP-FHA-11 11.4-53 REV 28 11/10 CONSTRUCTION All walls of this zone are nonrated, reinforced concrete. There are two nonrated doors in the north wall, one communicating with zone 1302H and the other with zone 1302L. A nonrated door in the south wall communicates with the outside and an open stairway communicates with zones 1302C below and 1302J above this zone. The floor and ceiling are nonrated, reinforced concrete. See area 1302 for penetrations.

FIRE PROTECTION There is no fire detection or automatic suppression system in the zone. Manual firefighting equipment in the zone consists of a portable CO2 fire extinguisher. In addition, a hose station and portable CO2 fire extinguisher are available in fire zone 1302C.

CONSEQUENCES OF DESIGN BASIS FIRE The majority of the zone boundaries are radwaste addition building exterior walls, substantially constructed with essentially no penetrations. The low fire loading and substantial construction of the concrete walls preclude a design basis fire from propagating beyond the boundaries of the fire zone. The manual firefighting equipment available is adequate to extinguish a fire.

HNP-FHA-11 11.4-54 REV 28 11/10 FIRE ZONE 1302G This zone is not considered safety related.

DESCRIPTION Radwaste Concentrate Tank Room Unit 1 Radwaste Addition Building - el 132 ft

DRAWING NUMBER(S) H-11841

AREA 100 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/Outside - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-55 REV 28 11/10 CONSTRUCTION The zone walls are all reinforced, nonrated concrete. The floor and the ceiling are nonrated, reinforced concrete. A concrete covered hatch is provided in the ceiling for equipment removal.

There is no other access to this zone. See area 1302 for penetrations.

FIRE PROTECTION Since this is a sealed zone with no means of normal access, containing no fixed combustibles, no fire protection features are provided for this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible loading of combustible material. The only fire postulated for this zone would involve transient combustibles. Since this zone is completely sealed with no normal access possible, the introduction of transient combustibles is not expected. In the unlikely event of any fire in this zone, the negligible fire loading and substantial construction preclude propagation of a fire beyond the boundaries of this zone.

HNP-FHA-11 11.4-56 REV 28 11/10 FIRE ZONE 1302H This zone is not considered safety related.

DESCRIPTION Floor Drain Sample Tank Room Unit 1 Radwaste Addition Building - el 132 ft

DRAWING NUMBER(S) H-11841

AREA 528 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) NR/1302F

HNP-FHA-11 11.4-57 REV 28 11/10 CONSTRUCTION The zone walls are reinforced, nonrated concrete. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door in the south wall to zone 1302F. See area 1302 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression systems or manual firefighting equipment. However, a portable CO2 fire extinguisher is available in adjacent zone 1302F and hose stations are available in zones 1302C and 1302J.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zones is adequate to extinguish any fire which occurs as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-58 REV 28 11/10 FIRE ZONE 1302I This zone is not considered safety related.

DESCRIPTION HVAC Room Unit 1 Radwaste Addition Building - el 150 ft

DRAWING NUMBER(S) H-11841

AREA 367 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/Outside - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) NR/1302J

HNP-FHA-11 11.4-59 REV 28 11/10 CONSTRUCTION The zone walls are reinforced, nonrated concrete. The floor and ceiling are also nonrated, reinforced concrete. The east wall has an opening to the outside for air intake. A nonrated door in the west wall communicates with zone 1302J. See area 1302 for penetrations.

FIRE PROTECTION This zone is not equipped with any automatic suppression or detection systems. There is a portable CO2 fire extinguisher and a hose station available in adjacent zone 1302J and a hose station available in this zone.

CONSEQUENCES OF DESIGN BASIS FIRE The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible combustible loading and substantial construction preclude propagation of a fire to the adjacent zones. The available firefighting equipment in this zone is adequate to extinguish any fire which occurs as a result of the introduction of transient combustibles.

HNP-FHA-11 11.4-60 REV 28 11/10 FIRE ZONE 1302J This zone is not considered safety related.

DESCRIPTION Working Floor Radwaste Addition Building - el 150 ft

DRAWING NUMBER(S) H-11841

AREA 2,797 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, clothing Charcoal Charcoal Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/1302L; OS/1302F - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) NR/1302I

HNP-FHA-11 11.4-61 REV 28 11/10 CONSTRUCTION The zone walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated reinforced concrete. A nonrated door at the south end of the east wall connects zone 1302I with this zone. There is an open stairway in the west part of the floor that leads to zone 1302F below this zone. The dumbwaiter shaft in the north section of this zone is open to zone 1302L below. See area 1302 for penetrations.

FIRE PROTECTION The charcoal filters in this zone are equipped with heat detection and internal water spray systems. In addition, a hose station and portable CO2 fire extinguishers are located in the zone.

CONSEQUENCES OF DESIGN BASIS FIRE The open stairwell and dumbwaiter shaft in the floor area creates a fire propagation hazard to adjacent zones 1302F and 1302L, respectively; however, the low combustible loading and substantial construction preclude propagation of the fire to adjacent zones. In the event of a design basis fire in the zone, the detection system in the filters would provide early warning alarms in the local area and in the MCR to assure prompt response by the plant fire brigade.

The fire brigade will initiate the water spray system in the filter unit to suppress the fire. The available firefighting equipment in this zone is adequate to extinguish the fire.

HNP-FHA-11 11.4-62 REV 28 11/10 FIRE ZONE 1302K This zone is not considered safety related.

DESCRIPTION Floor Drain Demineralizer Room Unit 1 Radwaste Addition Building - el 150 ft

DRAWING NUMBER(S) H-11841

AREA 100 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/Outside - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-11 11.4-63 REV 28 11/10 CONSTRUCTION The zone walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. A nonrated door in the south wall of this zone accesses adjacent zone 1302I. See area 1302 for penetrations.

FIRE PROTECTION Since this is a sealed zone with no means of normal access, containing no fixed combustibles, no fire protection features are provided for this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible loading of combustible material. The only fire postulated for this zone would involve transient combustibles. Since this zone is completely sealed with no normal access possible, the introduction of transient combustibles is not expected. In the unlikely event of any fire in this zone, the negligible fire loading and substantial construction preclude propagation of a fire beyond the boundaries of this zone.

HNP-FHA-11 11.4-64 REV 28 11/10 FIRE ZONE 1302L This zone is not considered safety related.

DESCRIPTION Solidification Area Radwaste Addition Building - el 132 ft

DRAWING NUMBER(S) H-11841

AREA 550 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, clothing Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 46,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/1302E, J - Penetrations See area 1302 text - Doors (Fire-rated Class/Zone #) 2-NR/Outside; NR/1302F

HNP-FHA-11 11.4-65 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. A nonrated door in south wall communicates with zone 1302F and two nonrated, vault type double doors in the north wall communicate with the outside. There is a dumbwaiter which accesses zones 1302E below and 1302J above. The floor and ceiling are nonrated, reinforced concrete. See area 1302 for penetrations.

FIRE PROTECTION No automatic suppression or fire detection system is located in the zone. There is no manual firefighting equipment provided in this zone; however, hose stations in zones 1302C and 1302J are capable of reaching this zone with an effective hose stream.

CONSEQUENCES OF DESIGN BASIS FIRE The north and west zone boundaries are reinforced concrete, radwaste addition building exterior walls containing essentially no penetrations. The balance of the zone boundaries are reinforced concrete, approximately 2 ft thick. The low fire loading and substantial construction preclude a design basis fire from propagating beyond the boundaries of this zone. The available manual fire protection is adequate to extinguish a fire.

HNP-FHA-11 11.5-1 REV 28 11/10 FIRE AREA 1401 This area is considered safety related.

DESCRIPTION Day Tank Room 1C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 83 ft2

COMBUSTIBLES Oil & Grease Diesel fuel Cable None Class A Paper Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 1,814,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/0401

HNP-FHA-11 11.5-2 REV 28 11/10 CONSTRUCTION All area walls are reinforced concrete and 3-h rated. The floor and roof are nonrated, reinforced concrete. A fire-rated Class A door in the east wall provides access to adjacent area 0401.

There are ventilation ducts with 3-h fire dampers in the east wall to adjacent area 0401. These dampers close automatically on high temperature or CO2 flooding system actuation or they may be manually closed.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage heat detectors to provide an early warning alarm both locally and in the main control room (MCR). In addition, an automatic CO2 flooding system is provided. There is no manual firefighting equipment in this area; however, portable CO2 and dry chemical fire extinguishers are easily accessible in adjacent areas 0401 and 1403. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area involving diesel fuel oil as a result of leakage or rupture of the day tank will be rapidly detected by the thermal detectors and extinguished by the CO2 flooding system. Activation of the detection and suppression system will provide an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction of the area boundaries is sufficient to contain the fire until it is extinguished. A fire in this area will not affect the capability to achieve safe shutdown or result in a release of radioactivity. Overflow of the day tank as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-3 REV 28 11/10 FIRE AREA 1402 This area is considered safety related.

DESCRIPTION Battery Room 1C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 191 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Thermal det (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/1404

HNP-FHA-11 11.5-4 REV 28 11/10 CONSTRUCTION All walls of the area are constructed of 3-h-rated, reinforced concrete. The floor is base slab and the roof is nonrated, reinforced concrete. There is a fire-rated Class A door in the west wall to fire area 1404. A 3-h-rated vent damper communicating with area 1403 is provided in the north wall.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with a thermal detection system which will provide an early warning alarm, both locally and in the MCR. There is no automatic suppression system within the area. No manual firefighting equipment is available in this area; however, several dry chemical and portable CO2 fire extinguishers are located in adjacent areas 1404 and 1403. Also, a CO2 hose reel is available in area 1404.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since the area is bounded on all sides by 3-h-rated barriers, propagation of the design basis fire outside of this area is not considered credible. In addition, due to the low combustible loading and installed detection system, which alarms both locally and in the MCR, the fire is expected to be detected in its incipient stages to ensure prompt response by the plant fire brigade. Hydrogen generated by the batteries is maintained at insignificant concentrations by the ventilation system in the area. See calculation 1380-027-C009 in appendix L of this document for further details. The available manual firefighting equipment from adjacent areas is adequate to extinguish the fire. The design basis fire for this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-11 11.5-5 REV 28 11/10 FIRE AREA 1403 This area is considered safety related.

DESCRIPTION Diesel Generator Room 1C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,598 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2; Dry chem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/0401;A/1404

HNP-FHA-11 11.5-6 REV 28 11/10 CONSTRUCTION The walls of the area are constructed of 3-h-rated, reinforced concrete. One large nonrated and one small 3-h-rated ventilation damper are located in the east wall, communicating with area 0401. An additional 3-h-rated damper in the south wall communicates with area 1402. All dampers are closed by high temperature, CO2 flooding system actuation, or manual actuation. Fire-rated Class A doors in the east and west walls access area 0401 and 1404, respectively. A fire-rated Class A rolling door is also provided in the east wall in series with the large vent damper. The floor and ceiling are both nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION Heat detectors are located within the area and provide both local and MCR alarms. The area is also equipped with an automatic CO2 flooding system. Several portable CO2 and dry chemical fire extinguishers are located in the area for manual firefighting. In addition, a CO2 hose reel is located in adjacent area 1404. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the enclosure of this area with 3-h-rated barriers and the low combustible loading, the design basis fire is not expected to propagate outside of the area. A design basis fire will, therefore, not affect the capability to achieve or maintain safe shutdown or result in any release of radioactivity. In addition, the installed detection system provides both local and MCR alarms to ensure prompt response by the plant fire brigade. As a result, rapid extinguishment of the fire is expected either by the installed suppression system or by the plant fire brigade using the available manual firefighting equipment. Overflow of the diesel generator fuel oil day tanks as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-7 REV 28 11/10 FIRE AREA 1404 This area is considered safety related.

DESCRIPTION Switchgear Room 1G Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/3; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/1402; 1403; NR/Outside

HNP-FHA-11 11.5-8 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this area are 3-h-rated reinforced concrete walls. The west wall is nonrated, reinforced concrete. There are two fire-rated Class A doors in the east wall to areas 1402 and 1403. There is one nonrated double door in the west wall with nonrated dampers in the vent located above the door, both communicating with the outside. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full area coverage smoke detection which provides an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The area is also provided with a CO2 hose reel and a CO2 portable fire extinguisher to support manual firefighting. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly, allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning alarms, both locally and in the MCR to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response does not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve safe shutdown or result in the release of any radioactivity.

Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-9 REV 28 11/10 FIRE AREA 1405 This area is considered safety related.

DESCRIPTION Day Tank Room lB Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 83 ft2

COMBUSTIBLES Oil & Grease Diesel fuel Cable None Class A Paper Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 1,990,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/0401

HNP-FHA-11 11.5-10 REV 28 11/10 CONSTRUCTION All area walls are reinforced concrete and 3-h rated. The floor and roof are nonrated, reinforced concrete. A fire-rated Class A door in the east wall provides access to adjacent area 0401.

There are ventilation ducts with 3-h fire dampers in the east wall to adjacent area 0401. These dampers close automatically on high temperature or CO2 flooding system actuation or they may be manually closed.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage heat detectors to provide an early warning alarm both locally and in the MCR. In addition, an automatic CO2 flooding system is provided. There is no manual firefighting equipment in this area; however, portable CO2 and dry chemical fire extinguishers are easily accessible in adjacent areas 0401 and 1407. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area involving diesel fuel oil as a result of leakage or rupture of the day tank will be rapidly detected by the thermal detectors and extinguished by the CO2 flooding system. Activation of the detection and suppression system will provide an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction of the area boundaries is sufficient to contain the fire until it is extinguished. A fire in this area will not affect the capability to achieve safe shutdown or result in a release of radioactivity. Overflow of the day tank as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-11 REV 28 11/10 FIRE AREA 1406 This area is considered safety related.

DESCRIPTION Battery Room 1B Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 191 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Thermal det (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling, or Roof Concrete

- Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/1408

HNP-FHA-11 11.5-12 REV 28 11/10 CONSTRUCTION All walls of the area are constructed of 3-h-rated, reinforced concrete. The floor is base slab and the roof is nonrated, reinforced concrete. There is a fire-rated Class A door in the west wall to fire area 1408. A 3-h-rated vent damper communicating with area 1407 is provided in the north wall.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with a thermal detection system which provides both local and MCR alarms. There is no automatic suppression system within the area. No manual firefighting equipment is available in this area; however, portable dry chemical and CO2 fire extinguishers are located in adjacent area 1407. A CO2 hose reel is also available in adjacent area 1408.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since the area is bounded on all sides by 3-h-rated barriers, propagation of the design basis fire outside of this area is not considered credible. Hydrogen generated by the batteries is maintained at insignificant concentrations by the ventilation system in the area. See calculation 1380-027-C009 in appendix L of this document for further details. In addition, due to the low combustible loading and installed detection system, which alarms both locally and in the MCR, the design basis fire is expected to be detected in its incipient stages to ensure prompt response by the plant fire brigade. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-11 11.5-13 REV 28 11/10 FIRE AREA 1407 This area is considered safety related.

DESCRIPTION Diesel Generator Room 1B Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,598 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2; Dry chem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/0401, A/1408

HNP-FHA-11 11.5-14 REV 28 11/10 CONSTRUCTION The walls of the area are constructed of 3-h-rated, reinforced concrete. One large nonrated and one small 3-h-rated ventilation damper are located in the east wall, communicating with area 0401. An additional 3-h-rated damper in the south wall communicates with area 1406. All dampers are closed by high temperature, CO2 flooding system actuation, or manual actuation. Fire-rated Class A doors in the east and west walls access area 0401 and 1408, respectively. A fire-rated Class A rolling door is also provided in series with the large damper in the east wall.

The floor and ceiling are both nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION Heat detectors located within the area provide both local and MCR alarms. The area is also equipped with an automatic CO2 flooding system. Portable CO2 and dry chemical fire extinguishers are located in the area for manual firefighting. In addition, a CO2 hose reel is located in adjacent area 1408 and yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the enclosure of this area with 3-h-rated barriers and the low combustible loading, the design basis fire is not expected to propagate outside of the area. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity. In addition, the local and MCR alarms provided by the installed detection system will ensure prompt response to and extinguishment of the fire either by the installed suppression system or by the plant fire brigade using the available manual firefighting equipment.

Overflow of the diesel generator fuel oil day tanks as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-15 REV 28 11/10 FIRE AREA 1408 This area is considered safety related.

DESCRIPTION Switchgear Room 1F Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/3; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/1406, 1407; NR/Outside

HNP-FHA-11 11.5-16 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this area are 3-h-rated reinforced concrete walls. The west wall is reinforced concrete, nonrated diesel building exterior wall. There are two fire-rated Class A doors in the east wall to areas 1406 and 1407. There is one nonrated double door in the west wall with nonrated dampers in the vent located above the door. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full area coverage smoke detection which provides an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The area is also provided with a CO2 hose reel and a CO2 portable fire extinguisher to support manual firefighting. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS An exemption from the section III.G.2 requirement for a full automatic suppression system has been requested for this area as is documented in appendix C of this document. This exemption request was denied per the January 1987 NRC SER. The fire area no longer contains safe shutdown equipment or circuits.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly, allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response does not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in the release of any radioactivity. Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-17 REV 28 11/10 FIRE AREA 1409 This area is considered safety related.

DESCRIPTION Day Tank Room 1A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 83 ft2

COMBUSTIBLES Oil & Grease Diesel fuel Cable None Class A Paper Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 1,814,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/0401

HNP-FHA-11 11.5-18 REV 28 11/10 CONSTRUCTION All area walls are reinforced concrete and 3-h rated. The floor and roof are nonrated, reinforced concrete. A fire-rated Class A door in the east wall provides access to adjacent area 0401.

There are ventilation ducts with 3-h fire dampers in the east wall to adjacent area 0401. These dampers close automatically on high temperature or CO2 flooding system actuation or they may be manually closed.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage heat detectors to provide an early warning alarm both locally and in the MCR. In addition, an automatic CO2 flooding system is provided. There is no manual firefighting equipment in this area; however, portable CO2 and dry chemical fire extinguishers are easily accessible in adjacent areas 0401 and 1411. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area involving diesel fuel oil as a result of leakage or rupture of the day tank will be rapidly detected by the thermal detectors and extinguished by the CO2 flooding system. Activation of the detection and suppression system will provide an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction of the area boundaries is sufficient to contain the fire until it is extinguished. A fire in this area will not affect the capability to achieve safe shutdown or result in a release of radioactivity. Overflow of the day tank as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-19 REV 28 11/10 FIRE AREA 1410 This area is considered safety related.

DESCRIPTION Battery Room 1A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 191 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Thermal det (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/1412

HNP-FHA-11 11.5-20 REV 28 11/10 CONSTRUCTION All walls of the area are constructed of 3-h-rated, reinforced concrete. The floor is concrete base slab and the roof is nonrated, reinforced concrete. There is a fire-rated Class A door in the west wall to fire area 1412. A 3-h-rated vent damper communicating with area 1411 is provided in the north wall.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with a thermal detection system which provides both local and MCR alarms. There is no automatic suppression system within the area. No manual firefighting equipment is available in this area; however, dry chemical and portable CO2 fire extinguishers are located in adjacent areas 1412 and 1411. A CO2 hose reel is also located in area 1412.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since the area is bounded on all sides by 3-h-rated barriers, propagation of the design basis fire outside of this area is not considered credible. Hydrogen generated by the batteries is maintained at insignificant concentrations by the ventilation system in the area. See calculation 1380-027-C009 in appendix L of this document for further details. In addition, due to the low combustible loading and installed detection systems, which alarm both locally and in the MCR, the fire is expected to be detected in its incipient stages to ensure prompt response by the plant fire brigade. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-11 11.5-21 REV 28 11/10 FIRE AREA 1411 This area is considered safety related.

DESCRIPTION Diesel Generator Room 1A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,598 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2; Dry chem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/0401; A/1412, 2409

HNP-FHA-11 11.5-22 REV 28 11/10 CONSTRUCTION All walls of this area are 3-h-rated, reinforced concrete. A fire-rated Class A double door is provided in the east wall to area 0401. There are two fire-rated Class A doors in the west wall communicating with areas 1412 and 2409. There are two open vents in the east wall of this area; one large and nonrated and one small and equipped with a 3-h-rated damper. All dampers are closed by high temperature, CO2 flooding system actuation, or by manual actuation. The east wall also contains a fire-rated Class A rolling door in series with the large vent damper. An additional vent with a 3-h-rated fire damper is provided in the south wall of this area communicating with area 1410. The floor and ceiling are both nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION Heat detectors located within the area provide both local and MCR alarms. The area is also equipped with an automatic CO2 flooding system. Portable CO2 and dry chemical fire extinguishers are located in the area and CO2 hose reels are located in adjacent areas 1412 and 2409 for manual firefighting. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the enclosure of this area with 3-h-rated barriers and the low combustible loading, the design basis fire is not expected to propagate outside of the area. In addition, the installed detection system will provide both local and MCR alarms to ensure prompt extinguishment of the fire either by the installed suppression system or by the plant fire brigade using the available manual firefighting equipment. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity. Overflow of the diesel generator fuel oil day tanks as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.5-23 REV 28 11/10 FIRE AREA 1412 This area is considered safety related.

DESCRIPTION Switchgear Room 1E Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/3; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/1410, 1411; NR/Outside

HNP-FHA-11 11.5-24 REV 28 11/10 CONSTRUCTION The north, south, and the east walls of this area are 3-h-rated, reinforced concrete. Two fire-rated Class A doors are provided in the east wall to areas 1411 and 1410. There is one nonrated double door in the west wall with nonrated dampers in the vent above the door. The west wall is constructed of nonrated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full area coverage smoke detection which provides an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The area is also provided with a CO2 hose reel and a CO2 portable fire extinguisher to support manual firefighting. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS An exemption from the section III.G.2 requirement for a full automatic suppression system has been requested for this area as is documented in appendix C of this document. This exemption request was denied per the January 1987 NRC SER. The fire area no longer contains safe shutdown equipment or circuits.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response do not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in the release of any radioactivity. Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-11 11.6-1 REV 28 11/10 FIRE AREA 1601 This area is considered safety related.

DESCRIPTION Unit 1 Service Water Valve Pit 1A East of the Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 144 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Below grade - Floors, Ceiling, or Roof Floor-gravel over concrete, ceiling-grating

- Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.6-2 REV 28 11/10 CONSTRUCTION The valve pit is constructed with reinforced concrete walls and floor approximately 14 ft below grade. The "roof" is grating with access hatch. This construction is defined as a separate fire area due to the spatial separation of greater than 20 ft between this and any other plant areas.

There are two cable ducts connecting this area with area 1602 (service water valve pit 1B).

These are not considered to be propagation paths due to their small size, long length, and the negligible combustible loading in both areas. Since this is an open yard area, there are no other penetrations.

FIRE PROTECTION Two hydrants, one to the northwest and one to the east of the valve pits, are accessible for manual firefighting.

APPENDIX "R" EXEMPTIONS An exemption from the literal requirements in Section III.G.2 for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-

10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences, since loss of the single, redundant circuit in the area may be compensated for by manual actions. Thus, the only fires of concern are those external exposure fires involving both this area and area 1602 (service water valve pit 1B). These areas are separated by approximately 28 ft. An asphalt road runs between the two areas and is not considered a propagation path due to a lack of any ignition sources or combustibles sufficient to transfer enough heat to the asphalt material to raise it to its ignition temperature. The largest fixed combustible source presenting a hazard to both pits is the auxiliary boiler fuel oil tank. The maximum probable fire at the nearby auxiliary boiler fuel oil tank will not radiate enough heat to either valve pit to result in damage. (See calculation 1380-027-C007 contained in appendix L of this document. Note from the analysis that radiant heat is the only feasible mode of heat transfer due to the dike constructed around the tank to contain the maximum postulated fuel oil spill to the immediate area of the tank). The only transient combustible presenting an exposure fire hazard to both areas is the truck transport of fuel oil to the tank. The only credible mechanism for a large spill of fuel oil is human error during refilling operations. The auxiliary boiler fuel oil tank refilling connection is greater than 40 ft from the nearest valve pit. The grade slopes to a yard drain located between the fuel oil tank and the valve pits, which then diverts any spill away from the pits. Each pit has a 6-in. curb at the edge of the road to prevent possible entrance of liquid combustibles. Since the safe shutdown components are below grade and a spill will not enter the pits, there is no effect on safe shutdown capability. Thus, a fire in or near this area does not affect the ability to safely shut down the plant. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-11 11.6-3 REV 28 11/10 FIRE AREA 1602 This area is considered safety related.

DESCRIPTION Unit 1 Service Water Valve Pit 1B East of the Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 144 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Below grade - Floors, Ceiling, or Roof Floor-gravel over concrete, ceiling-grating - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.6-4 REV 28 11/10 CONSTRUCTION The valve pit is constructed with reinforced concrete walls and floor approximately 14 ft below grade. The "roof" is grating with access hatch. This construction is defined as a separate fire area due to the spatial separation of greater than 20 ft between this and any other plant areas.

There are two cable ducts connecting this area with area 1601 (service water valve pit 1A).

These are not considered to be propagation paths due to their small size, long length, and the negligible combustible loading in both areas. Since this is an open yard area, there are no other penetrations.

FIRE PROTECTION Two hydrants, one to the northwest and one to the east of the valve pits, are accessible for manual firefighting.

APPENDIX R EXEMPTIONS An exemption from the literal requirements in Section III.G.2 for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 2, 1987, NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences, since loss of the single, redundant circuit in the area may be compensated for by manual actions. Thus, the only fires of concern are those external exposure fires involving both this area and area 1601 (service water valve pit 1A). These areas are separated by approximately 28 ft. An asphalt road runs between the two areas and is not considered a propagation path due to a lack of any ignition sources or combustibles sufficient to transfer enough heat to the asphalt material to raise it to its ignition temperature. Each pit has a 6-in.

curb at the edge of the road. The largest fixed combustible source presenting a hazard to both pits is the auxiliary boiler fuel oil tank. The maximum probable fire at the nearby auxiliary boiler fuel oil tank will not radiate enough heat to either valve pit to result in damage. (See calculation 1380-027-C007 contained in appendix L of this document. Note that radiant heat is the only feasible mode of heat transfer due to the dike constructed around the tank to contain the maximum postulated fuel oil spill to the immediate area of the tank.) The only transient combustible presenting an exposure fire hazard to both areas is the truck transport of fuel oil to the tank. The only credible mechanism for a large spill of fuel oil is human error during refilling operations. The auxiliary boiler fuel oil tank refilling connection is greater than 40 ft from the nearest valve pit. The grade slopes to a yard drain located between the fuel oil tank and the valve pits, which then diverts any spill away from the pits. Each pit has a 6-in. curb at the edge of the road to prevent possible entrance of liquid combustibles. Since the safe shutdown components are below grade and a spill will not enter the pits, there is no effect on safe shutdown capability. Thus, a fire in or near this area does not affect the ability to safely shut down the plant. This area contains no radioactive materials which could be released in the event of a fire

HNP-FHA-11 11.6-5 REV 28 11/10 FIRE AREA 1603 This area is considered safety related.

DESCRIPTION Unit 1 Condensate Storage Tank/Pump East of the Unit 1 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 4,020 ft2

COMBUSTIBLES Oil & Grease Grease Cable None Class A Wood, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Paint, rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Floor-concrete slab; ceiling-open - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.6-6 REV 28 11/10 CONSTRUCTION The condensate tank and pump enclosures are constructed with reinforced concrete walls approximately 20-ft high. The floor is a reinforced concrete slab, and the "ceiling" is open.

Access is via metal stairs on the side of the enclosure. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION There is no detection or automatic suppression in the area. A hydrant is located near the southeast corner of the enclosure.

APPENDIX "R" EXEMPTIONS An exemption from the literal requirements in Section III.G.2 for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area that damages redundant safe shutdown equipment is not considered credible for the following reasons:

1. The majority of the combustibles in this fire area is small quantities associated with dressout areas at the tops of the access stairs which are separated from the nearest safe shutdown components by at least 15 ft.

2. Due to the very limited amount of equipment inside the enclosure, there is little likelihood of transient combustibles commonly associated with maintenance and modification activities being introduced. Similarly, there is little likelihood for the introduction of ignition sources.

3. The only safe shutdown components are located on opposite sides of the condensate storage tank and are not susceptible to a single exposure fire. The circuits associated with these components are routed in conduit which provides a sufficient radiant heat shield for the low concentration of combustibles.

4. The condensate tank enclosure is sufficiently constructed to protect safe shutdown components from a fire external to the enclosure.

In addition, the available manual suppression is adequate to extinguish any insignificant fire which may occur. A fire in this area will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-7 REV 28 11/10 FIRE AREA 1604 The area is considered safety related.

DESCRIPTION Unit 1 RB Railroad Airlock/Nitrogen Storage Tank East of Unit 1 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11802, H-11860

AREA 2,500 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood, plank, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 200,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrant outside Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S-C/NR; N-Open; W-C, Open/NR; E-C, Open/NR - Floors, Ceiling or Roof Concrete (see zone text) - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-NR/Outside; 2-NR/1203; NR/2604

HNP-FHA-11 11.6-8 REV 28 11/10 CONSTRUCTION The north boundary of the area is open with no barriers. The south boundary of the area is the reinforced concrete south wall of the railroad airlock with a nonrated door to area 2604. The west boundary includes an open area with no barriers and the nonrated, reinforced concrete reactor building exterior wall containing a nonrated airtight, personnel access door and a nonrated airtight railroad access door. The east boundary includes an open area with no barriers and the reinforced concrete railroad airlock exterior wall containing a nonrated, airtight railroad access door.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in Appendix I of this document.

FIRE PROTECTION There is no detection or suppression in the area. Adjacent area 2604 provides hose stations and CO2 fire extinguishers for manual fire protection. A fire hydrant for manual firefighting is provided on the south side of the Unit 1 condensate storage tank.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h barriers, has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area may potentially result in a loss of Unit l drywell air system, nitrogen storage, and safe shutdown components. However, shutdown can be achieved using the Unit 2 nitrogen system components. In addition, a fire in this area presents an exposure hazard to safe shutdown equipment in adjacent areas 1203, 1205, 1603, and 2604. The east boundaries of fire areas 1203 and 1205 consist of the nonrated exterior walls of the Unit 1 reactor building.

These secondary containment walls are a minimum of 2-ft thick with no penetrations in the vicinity of the hazard. Thus, a fire in this area will not propagate to areas 1203 and/or 1205.

Fire area 1603 is the condensate storage tank and pump enclosure. The only safe shutdown equipment in this area is located inside the tank enclosure, which is greater than 15 ft from the hazard. In addition to the separation distance, the 20-ft-high enclosure walls act as a radiant heat shield to protect safe shutdown equipment. Fire area 2604 contains the redundant Unit 2 nitrogen system. The boundary between the two areas is the south wall of the reactor building railroad airlock which is reinforced, solid concrete with nonrated doors and limited penetrations.

The railroad airlock is free of any substantial combustibles. The significant concentration of combustibles in this area is also separated from area 2604 by the north wall of the railroad airlock which is similar in construction to the south wall. Thus, a fire in area 1604 will not HNP-FHA-11 11.6-9 REV 28 11/10 propagate to area 2604. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-10 REV 28 11/10 FIRE ZONE 1604A This zone is considered safety related.

DESCRIPTION Unit 1 Reactor Building Railroad Airlock - el 130 ft

DRAWING NUMBER(S) H-11802, H-11852, H-11860

AREA 1,540 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood, plank, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 200,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See area 1604 text - Doors (Fire-rated Class/Zone no.) 2-NR/1203; 2604, Outside

HNP-FHA-11 11.6-11 REV 28 11/10 CONSTRUCTION The railroad airlock is constructed of nonrated reinforced concrete, including the floor and ceiling. There are large vault-type, nonrated airlock doors in both the west wall adjacent to reactor building zone 1203F and in the east wall to the outside. A double nonrated airlock door in the south wall accesses area 2604.

A personnel airlock is located along the north wall of this zone. The south wall of the personnel airlock is constructed of nonrated 8-in. concrete block. The roof is constructed of 4-in.-thick nonrated concrete. A nonrated door in the west wall of the personnel airlock accesses reactor building zone 1203F. A nonrated airlock door in the north wall (at the east end) provides access to zone 1604B and outside.

See area 1604 for penetrations.

FIRE PROTECTION There is no detection or automatic suppression system in this zone. Hose stations and a portable CO2 fire extinguisher are available in adjacent area 2604 for manual firefighting. In addition, yard hydrants are located immediately outside near each condensate storage tank.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire duration is less than 15 min, which is considered to be insufficient to cause other than localized damage. Although the walls and doors in this zone are nonrated, they are of solid, reinforced concrete and steel and of substantial thickness. The design basis fire is not considered to be capable of breaching these barriers. A fire in this zone will not affect safe shutdown capability. There is no potential for a significant release of radioactivity from a fire in this zone.

HNP-FHA-11 11.6-12 REV 28 11/10 FIRE ZONE 1604B This zone is not considered safety related.

DESCRIPTION Unit 1 Nitrogen Storage Tank Outside and to the north of the RB Railroad Airlock - el 130 ft

DRAWING NUMBER(S) H-11802, H-11860

AREA Approximately 960 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 200,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N/A/outside - Floors, Ceiling or Roof N/A/outside - Fixed Openings OP/Outside - Penetrations See area 1604 text - Doors (Fire-rated Class/Zone #) N/A

HNP-FHA-11 11.6-13 REV 28 11/10 CONSTRUCTION This zone is an outside area. See area 1604 for penetrations.

FIRE PROTECTION There is no detection or suppression system in the zone. Hose stations and portable CO2 fire extinguishers are available in adjacent area 2604. In addition, yard hydrants are located immediately outside this zone at the Unit 1 condensate storage tank.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible amount of combustibles, a design basis fire of significant size is not considered credible for this zone. A fire in this zone will not affect safe shutdown capability or result in a significant release of radioactivity.

HNP-FHA-11 11.6-14 REV 28 11/10 FIRE AREA 1605 This area is not considered safety related.

DESCRIPTION Unit 1 Circulating Water Pump Pit East of the Power Block

DRAWING NUMBER(S) H-11802

AREA 2,555 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A None Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 46,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants @ cooling towers & CST Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Floor-concrete; ceiling-none - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-11 11.6-15 REV 28 11/10 CONSTRUCTION The circulating water pump pits are constructed with reinforced concrete walls and floor approximately 15 ft below grade. The "roof" is at grade and is open. Since this is an open yard area, penetrations are not sealed.

FIRE PROTECTION This area contains portable CO2 fire extinguishers. Fire hydrants are located near the condensate storage tanks and the cooling towers. No automatic detection or suppression systems are provided.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is assumed to result in the loss of both Unit 1 circulating water pumps and associated equipment. However, the pumps are not required for safe shutdown.

Due to the low combustible loading, the substantial, below grade construction of the pit and the greater than 50-ft separation of the pit from any other plant areas, propagation of the design basis fire outside of this area is not considered credible.

HNP-FHA-11 11.6-16 REV 28 11/10 FIRE AREA 1606 This area is not considered safety related.

DESCRIPTION Unit 1 Transformer Yard West of the Unit 1 Turbine Building

DRAWING NUMBER(S) H-11802, H-11850

AREA Approximately 15,400 ft2 enclosing all six transformers and the fire protection valve house.

COMBUSTIBLES Oil & Grease Transformer oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading See text Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations Hydrants Portable Extinguishers Dry chem Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls None - Floors, Ceiling, or Roof Concrete pad/gravel; None - Fixed Openings N/A - Penetrations See text - Doors (Fire-rated Class/Zone no.) N/A

HNP-FHA-11 11.6-17 REV 28 11/10 CONSTRUCTION This open area contains six large oil filled transformers mounted on concrete pads surrounded by gravel which is designed to contain any oil spills to a localized area. All six transformers are located within 50 ft of the turbine building exterior wall, which forms the east boundary of the area. The transformer cases are constructed of heavy sheet steel. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION Each transformer is equipped with a fixed automatic water spray suppression system activated by a dry pilot system above and around the transformers. The area is equipped with fire hydrants and a portable dry chemical fire extinguisher located in the valve house. In addition, the high visibility and traffic in the area would provide rapid detection of any fire and ensure prompt response by the plant fire brigade which is trained in the fighting of transformer fires.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area presents an exposure fire hazard to the Unit 1 turbine building. The guidance of Appendix A to BTP 9.5-l Position D.1.h indicates that oil filled transformers adjacent to safety-related structures should have any openings in the separating wall sealed to a 3-h rating. Three transformers in this area are less than 20 ft from the turbine building exterior wall and three transformers are less than 40 ft from the same wall. The turbine building contains circuits for both safe shutdown paths. This is considered acceptable since:

(1) The only openings in the turbine building west wall are the switchgear control cable tray and the main plant bus duct penetrations; (2) Radiant and convected heat entering the openings will be rapidly diluted in the large volume of the turbine building; (3) Each transformer is provided with an automatic water spray system;

(4) Only one safe shutdown path will be affected in the unlikely event a fire propagates to the turbine building.

(5) The PPT transformer is separated from the main power transformer by a fire barrier.

A fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-11 11.6-18 REV 28 11/10 FIRE AREA 1608 This area is not considered safety related.

DESCRIPTION Offgas Recombiner Building North of the Unit 1 Turbine Building - el 130 ft and l52 ft

DRAWING NUMBER(S) H-11857

AREA 4,767 ft2

COMBUSTIBLES Oil & Grease Transformer oil Cable Cable insulation Class A Wood, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings CH/Outside - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-NR/Outside

HNP-FHA-11 11.6-19 REV 28 11/10 CONSTRUCTION The exterior walls of this building serve as the area boundary. They are of substantial nonrated, reinforced concrete construction, approximately 3 ft thick. The floor is reinforced concrete slab; the roof is also nonrated, reinforced concrete approximately 2 ft thick containing several solid concrete hatches for equipment removal. Nonrated doors in the south and west walls are provided for access to the building. Since this area is located away from other plant areas and contains no safe shutdown circuits or components, penetrations are not sealed.

FIRE PROTECTION Zone 1608A of this area contains partial coverage smoke detection, hose stations, and portable CO2 fire extinguishers. The other zones contain no fire protection features but also contain negligible combustible loadings.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area involves a low combustible loading, resulting in an equivalent fire duration of less than 30 min. Although the exterior of this building is not fire rated, it is of very substantial construction (minimum 2-ft-thick concrete containing essentially no penetrations). The fire is therefore not expected to be capable of breaching the area boundaries. Activation of the detection system in zone 1608A will provide an alarm, both locally and in the main control room (MCR) to ensure prompt response by the plant fire brigade. Also, the available firefighting equipment in the area is adequate to extinguish any fire which might occur. In addition, this area contains no safe shutdown equipment or circuits and is not considered safety related. There are also no exposure fire hazards to this area. Consequently, a design basis fire in this area will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-20 REV 28 11/10 FIRE ZONE 1608A This zone is not considered safety related.

DESCRIPTION Offgas Recombiner Working Floors Offgas Recombiner Building - el 130 ft and 152 ft

DRAWING NUMBER(S) H-11857

AREA 3,215 ft2

COMBUSTIBLES Oil & Grease Transformer oil Cable Cable insulation Class A Wood, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 1608 text - Doors (Fire-rated Class/Zone no.) 2-NR/Outside; NR/1608B, C, D

HNP-FHA-11 11.6-21 REV 28 11/10 CONSTRUCTION All of the walls are reinforced concrete approximately 3 ft thick and nonrated. The floor and ceiling are also reinforced, nonrated concrete. There are two nonrated doors, one in the south exterior wall and one in the west exterior wall. Nonrated doors also access zones 1608B, 1608C, and 1608D on the east side of this zone. (See area 1608 for penetrations.)

FIRE PROTECTION This zone contains full coverage smoke detection, hose stations, and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE The substantial construction of the zone boundaries, the low combustible loading, and the available suppression and detection preclude the propagation of the design basis fire beyond the boundaries of the zone. The available firefighting equipment in the zone is adequate to extinguish any fire which might occur. A fire in this zone will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-22 REV 28 11/10 FIRE AREA 1608B This area is not considered safety related.

DESCRIPTION Offgas Preheater No. 1 Offgas Recombiner Building - el 130 ft

DRAWING NUMBER(S) H-11857

AREA 531 ft2 COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings CH/Outside - Penetrations See area 1608 text - Doors (Fire-rated Class/Zone no.) NR/1608A

HNP-FHA-11 11.6-23 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete approximately 3 ft thick. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door on the west side of this zone to zone 1608A. (See area 1608 for penetrations.)

FIRE PROTECTION This zone contains no detection or automatic suppression system; however, adjacent zone 1608A contains hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible combustible loading, a significant fire is not considered credible for this zone. Any fire initiated due to transient combustibles would be localized and unlikely to cause damage to equipment in the zone. The substantial construction of the zone boundaries and the negligible combustible loading preclude the propagation to any adjacent zones of any insignificant fire which may occur. The available manual firefighting equipment in adjacent zone 1608A is adequate to extinguish the fire. A fire in this zone will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-24 REV 28 11/10 FIRE ZONE 1608C This zone is not considered safety related.

DESCRIPTION Offgas Condenser Offgas Recombiner Building - el 130 ft

DRAWING NUMBER(S) H-11857

AREA 422 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings CH/Outside - Penetrations See area 1608 text - Doors (Fire-rated Class/Zone no.) NR/1608A

HNP-FHA-11 11.6-25 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete approximately 3 ft thick. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door on the west side of this zone to zone 1608A. (See area 1608 for penetrations.)

FIRE PROTECTION This zone contains no detection or automatic suppression system; however, adjacent zone 1608A contains hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible combustible loading, a significant fire is not considered credible for this zone. Any fire initiated due to transient combustibles would be localized and unlikely to cause damage to equipment in the zone. The substantial construction of the zone boundaries and the negligible combustible loading preclude the propagation to any adjacent zones of any insignificant fire which may occur. The available manual firefighting equipment in adjacent zone 1608A is adequate to extinguish the fire. A fire in this zone will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-26 REV 28 11/10 FIRE ZONE 1608D This zone is not considered safety related.

DESCRIPTION Offgas Preheater No. 2 Offgas Recombiner Building - el 130 ft

DRAWING NUMBER(S) H-11857

AREA 599 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings CH/Outside - Penetrations See area 1608 text - Doors (Fire-rated Class/Zone no.) NR/1608A

HNP-FHA-11 11.6-27 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete, approximately 3 ft thick. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door on the west side of this zone to zone 1608A. See area 1608 for penetrations.

FIRE PROTECTION This zone contains no detection or automatic suppression system. However, adjacent zone 1608A contains hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible combustible loading, a significant fire is not considered credible for this zone. Any fire initiated due to transient combustibles would be localized and unlikely to cause damage to equipment in the zone. The substantial construction of the zone boundaries and the negligible combustible loading preclude the propagation to any adjacent zones of any insignificant fire which may occur. The available manual firefighting equipment in adjacent zone 1608A is adequate to extinguish the fire. A fire in this zone will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-28 REV 28 11/10 FIRE AREA 1609 This area is not considered safety related.

DESCRIPTION Unit 1 Reactor Building 185 ft Roof Unit 1 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11829

AREA 4,489 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal Charcoal Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls S, E, W-C/NR; N/Open - Floors, Ceiling or Roof Floor-concrete; ceiling-open - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone #) NR/1203I

HNP-FHA-11 11.6-29 REV 28 11/10 CONSTRUCTION This is an open area on the reactor building roof at the 185-ft elevation. The area is bounded by reinforced concrete walls on three sides and is open on the north. The east wall is nonrated, reinforced concrete separating this area from the balance of the reactor building. The west wall is also nonrated, reinforced concrete and separates this area from the turbine building. The south wall is 3-h-rated reinforced concrete with nonrated double airlock doors to adjacent area 1203. The floor is nonrated, reinforced concrete and contains one significant penetration for the reactor building vent stack in the northeast corner of the area. This area is considered a separate fire area due to the insignificant combustible loading; the nonrated but substantial boundaries of the area at the floor and on the east, south, and west sides; and the large spatial separation of this area from other plant areas.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The charcoal filters contained in this area are equipped with heat detectors and a water spray system. There is no other detection or automatic or manual suppression in this area. Actuation of the detection system provides an alarm locally and in the MCR. Adjacent zone 1203I provides a portable CO2 fire extinguisher and adjacent zone 1205U contains a hose station able to provide an effective hose stream to this area.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire originating in this area is considered insignificant due to the negligible combustible loading resulting in a design basis fire duration of less than 15 min. Therefore, the design basis fire is not expected to propagate beyond the boundaries of the area. In the event of a design basis fire in the zone, the detection system in the filters would provide early warning alarms in the local area and in the MCR to assure prompt response by the plant fire brigade. The fire brigade will initiate the water spray system in the filter unit to suppress the fire. A fire in zones 1205N or 1205Q below this area are not expected to propagate up to this area since the only credible propagation path is through the reactor building vent stack penetration which is approximately 30 ft from the only combustibles in this area. A fire originating in the turbine building is not expected to propagate across this area to the reactor building or vice versa since two nonrated but substantial barriers would have to be breached to establish this propagation path. This is not considered credible since once one barrier was breached, the fire would be in an open outside area. Sufficient heat could not be confined to damage the second barrier. Therefore, no exposure fire to this area is considered capable of propagating through this area to another.

The design basis fire for this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-11 11.6-30 REV 28 11/10 FIRE AREA 1610 This area is considered safety related.

DESCRIPTION Diesel Fuel Oil Storage Tank 1A Underground - below 130 ft

DRAWING NUMBER(S) H-11802

AREA No area calculation is required due to tanks being located underground.

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading (See text) Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations Hydrant Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-11 11.6-31 REV 28 11/10 CONSTRUCTION The diesel fuel oil storage tanks are 40,000-gal capacity underground tanks approximately 12 ft below grade. The area surrounding the tanks has been designed to drain spills and water away from the fire area.

FIRE PROTECTION Two hydrants, one to the southeast and one to the north of the fuel oil storage tanks, are accessible for manual firefighting. Three portable dry chemical fire extinguishers are post mounted in the vicinity of the tanks. A 150-lb dry chemical extinguisher is located near fire area 0501 approximately 300 ft away.

APPENDIX R EXEMPTIONS None

CONSEQUENCES OF A DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences since all components and the fuel oil storage tanks are located underground. A fire involving a fuel oil tank truck will not impose a threat to the storage tanks or operation of the diesel generators. The diesel generators are separated from this fire area by a noncombustible exterior structural wall since the safe shutdown components are below grade and a tank truck spill will not impose a threat. There is no effect on safe shutdown capability. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-11 11.6-32 REV 28 11/10 FIRE AREA 1611 This area is considered safety related.

DESCRIPTION Diesel Fuel Oil Storage Tank 1B Underground - below 130 ft

DRAWING NUMBER(S) H-11802

AREA No area calculation is required due to tanks being located underground.

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading (See text) Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations Hydrant Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-11 11.6-33 REV 28 11/10 CONSTRUCTION The diesel fuel oil storage tanks are 40,000-gal capacity underground tanks approximately 12 ft below grade. The area surrounding the tanks has been designed to drain spills and water away from the fire area.

FIRE PROTECTION Two hydrants, one to the southeast and one to the north of the fuel oil storage tanks, are accessible for manual firefighting. Three portable dry chemical fire extinguishers are post mounted in the vicinity of the tanks. A 150-lb dry chemical extinguisher is located near fire area 0501 approximately 300 ft away.

APPENDIX R EXEMPTIONS None

CONSEQUENCES OF A DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences since all components and the fuel oil storage tanks are located underground. A fire involving a fuel oil tank truck will not impose a threat to the storage tanks or operation of the diesel generators. The diesel generators are separated from this fire area by a noncombustible exterior structural wall. Since the safe shutdown components are below grade and a tank truck spill will not impose a threat, there is no effect on safe shutdown capability. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-11 11.6-34 REV 28 11/10 FIRE AREA 1612 This area is considered safety related.

DESCRIPTION Diesel Fuel Oil Storage Tank 1C Underground - below 130 ft

DRAWING NUMBER(S) H-11802

AREA No area calculation is required due to tanks being located underground.

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading (See text) Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations Hydrant Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-11 11.6-35 REV 28 11/10 CONSTRUCTION The diesel fuel oil storage tanks are 40,000-gal capacity underground tanks approximately 12 ft below grade. The area surrounding the tanks has been designed to drain spills and water away from the fire area.

FIRE PROTECTION Two hydrants, one to the southeast and one to the north of the fuel oil storage tanks, are accessible for manual firefighting. Three portable dry chemical fire extinguishers are post mounted in the vicinity of the tanks. A 150-lb dry chemical extinguisher is located near fire area 0501 approximately 300 ft away.

APPENDIX R EXEMPTIONS None

CONSEQUENCES OF A DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences since all components and the fuel oil storage tanks are located underground. A fire involving a fuel oil tank truck will not impose a threat to the storage tanks or operation of the diesel generators. The diesel generators are separated from this fire area by a noncombustible exterior structural wall. Since the safe shutdown components are below grade and a tank truck spill will not impose a threat, there is no effect on safe shutdown capability. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-11 11.7-1 REV 28 11/10 FIRE AREA 1801 This area is not considered safety related.

DESCRIPTION Unit 1 "A" Cooling Tower Switchgear Building East of the Unit 1 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11851, H-11854

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2; Dry chem Detectors (type) Switchgear building smoke detector (IS) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone No.) See text

HNP-FHA-11 11.7-2 REV 28 11/10 CONSTRUCTION The cooling towers are mechanical draft counterflow towers constructed completely of fiberglass with a flame spread rating 25 per ASTM E84. The end walls, dividing walls, spray diffusers, water distribution piping, drift eliminators, and fan decks are constructed with fiberglass material with flame spread rating 25 per ASTM E84. The switchgear house is constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard area not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no automatic fire detection or suppression for the cooling tower. Yard hydrants are located throughout the area for manual firefighting. The switchgear house is equipped with smoke detectors, a portable CO2 fire extinguisher, and a portable dry chemical fire extinguisher. Both local and main control room (MCR) alarms are provided to indicate detection system actuation. In addition, hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area which could be released in the event of a fire. The switchgear building detection system is expected to alarm both locally and in the MCR for prompt action to extinguish any fires which might occur. The open area around the towers and the numerous hydrants enhance the ability of the plant fire brigade to manually fight any fires. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-11 11.7-3 REV 28 11/10 FIRE AREA 1802 This area is not considered safety related.

DESCRIPTION Unit 1 "B" Cooling Tower Switchgear Building East of the Unit 1 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11851, H-11854

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than -1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2; Dry chem Detectors (type) Switchgear Building Smoke Detector (IS) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone No.) See text

HNP-FHA-11 11.7-4 REV 28 11/10 CONSTRUCTION The cooling towers are mechanical draft counterflow towers constructed completely of fiberglass with flame spread rating 25 per ASTM E84. The end walls, dividing walls, spray diffusers, water distribution piping, drift eliminators, and fan decks are constructed with fiberglass material with flame spread rating 25 per ASTM E84. Frames are wood and the diffuser fill material is plastic in metal frames. The two fire protection valve houses and the switchgear house are constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no automatic fire detection or suppression for the cooling tower. Yard hydrants are located throughout the area for manual firefighting. The switchgear house is equipped with smoke detectors, a portable CO2 fire extinguisher, and a portable dry chemical fire extinguisher. Both local and MCR alarms are provided to indicate smoke detection system actuation. In addition, four hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area which could be released in the event of a fire. The switchgear building detection system is expected to alarm both locally and in the MCR for prompt action to extinguish any fires which might occur. The open area around the towers and the numerous hydrants enhance the ability of the plant fire brigade to manually fight any fires if it should be necessary. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-11 11.7-5 REV 28 11/10 FIRE AREA 1803 This area is not considered safety related.

DESCRIPTION Unit 1 "C" Cooling Tower Switchgear Building East of the Unit 1 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11851, H-11854

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than -1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2; Dry chem Detectors (type) Switchgear Building Smoke Detector (IS) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone No.) See text

HNP-FHA-11 11.7-6 REV 28 11/10 CONSTRUCTION The cooling towers are mechanical draft counterflow towers constructed completely of fiberglass with flame spread rating 25 ASTM E84. The end walls, dividing walls, spray diffusers, water distribution piping, drift eliminators, and fan decks are constructed with fiberglass material with flame spread rating 25 ASTM E84. The switchgear house is constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no automatic fire detection or suppression for the cooling tower. Yard hydrants are located throughout the area for manual firefighting. The switchgear house is equipped with smoke detectors, a portable CO2 fire extinguisher, and a portable dry chemical fire extinguisher. Both local and MCR alarms are provided to indicate smoke detection system actuation. In addition, hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area which could be released in the event of a fire. The switchgear building detection system is expected to alarm both locally and in the MCR for prompt action to extinguish any fires which might occur. The open area around the towers and the numerous hydrants enhance the ability of the plant fire brigade to manually fight any fires if it should be necessary. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-11 11.7-7 REV 28 11/10 FIRE AREA 1804 This area is not considered safety related.

DESCRIPTION Unit 1 Turbine Building Back Entrance (Frisker Building)

Outside the Unit 1 Turbine Building - el 130 ft - at Column Line T3

DRAWING NUMBER(S) H-11802

AREA 615 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants nearby Portable Extinguishers CO2 - nearby, dry chem located on inside East wall Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone no.) See text

HNP-FHA-11 11.7-8 REV 28 11/10 CONSTRUCTION The fire area consists of a precast, nonrated, concrete modular structure with a concrete slab foundation. The structure is located outside but adjacent to the Unit 1 turbine building east wall, north end. Since this is an outside yard not important to safe shutdown and located away from other plant areas, penetrations are not required to be sealed.

FIRE PROTECTION A fire extinguisher is located nearby on the outside north wall of the respirator decontamination room and locally. There is no detection or automatic suppression in this building. Yard hydrants and hose houses are located to provide an effective hose stream to this area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area does not represent an exposure fire hazard to the turbine building due to the low combustible presence. Any credible propagation path is through the nonrated openings. A rollup door and a single personnel access door are the only openings on the east side of the turbine building. There are no fixed combustibles subject to radiant heat exposure in the immediate vicinity of either door. The nearest safe shutdown circuits or components are located greater than 30 ft from the doors. Convected heat will be diluted by the large volume of the turbine building; thus, a fire in this area will not affect safe shutdown or result in a release of radioactivity.

HNP-FHA-11 11.7-9 REV 28 11/10 FIRE AREA 1805 This area is not considered safety related.

DESCRIPTION Instrument Calibration/Respirator Decontamination Building North of the Unit 1 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 726 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, cardboard, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 52,667 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants nearby Portable Extinguishers CO2 - on north wall of bldg Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone no.) See text

HNP-FHA-11 11.7-10 REV 28 11/10 CONSTRUCTION The fire area consists of a building adjacent to the Unit 1 radwaste building on the south and the Unit 1 turbine building on the west. This building is constructed entirely of nonrated reinforced concrete and contains two rooms separated by a nonrated concrete wall. Since this building is outside the power block and not important to safe shutdown, penetrations are not required to be sealed.

FIRE PROTECTION There is no automatic detection or suppression system in this building. A CO2 extinguisher is located on the outside north wall. Yard hydrants and hose houses are located nearby and can provide an effective hose stream to this area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area represents an exposure fire hazard to the turbine and radwaste buildings. Both buildings are of substantial construction and can withstand the exposure of a design basis fire in this area. The only credible propagation paths are through nonrated openings. The loading dock double door on the north side of the radwaste building is the only opening in the area through which a fire might propagate. There are no fixed combustibles subject to radiant heat exposure in the vicinity of this door. There are no safe shutdown circuits or components in the radwaste building. Therefore, a fire in this area will not affect safe shutdown or result in a release of radioactivity.

HNP-FHA-11 11.7-11 REV 28 11/10 FIRE ZONE 1805A This zone is not considered safety related.

DESCRIPTION Instrument Calibration Room North of the Unit 1 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 264 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, trash, rags Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 45,742 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants nearby Portable Extinguishers CO2 - on outside north wall Detectors (type) None

FIRE RESISTANCE RATING Actual See text - Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) 1 Fire-rated Class A

HNP-FHA-11 11.7-12 REV 28 11/10 CONSTRUCTION The instrument calibration room is constructed of nonrated, reinforced concrete walls with concrete floor and nonrated, reinforced concrete ceiling. The main entry door is a fire-rated Class A door. See area 1805 for penetrations.

FIRE PROTECTION There is no automatic detection or suppression in this zone. A CO2 extinguisher is located near the main entry door on the outside north wall of the room. Yard hydrants and hose houses are located nearby to provide effective hose stream coverage.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire, which assumes total combustion of all combustibles, represents an exposure hazard to plant structures (i.e., the radwaste and turbine buildings). The radwaste building wall is reinforced solid concrete with no openings within approximately 35 ft of the hazard. The turbine building wall consists of concrete "T" panels of minimum 4-in. thickness.

The only openings in the turbine building wall are a normally closed rollup door and a personnel access door protected by the frisker building. There are no fixed combustibles in the immediate vicinity of these doors subject to radiant heat exposure. Convected heat will be rapidly diluted by the large volume of the turbine building. The nearest required safe shutdown circuits or components are greater than 30 ft from these doors. Based on the substantial construction of the nearby building walls, the absence of significant, intervening combustibles and a large distance between the hazard and important plant components, a design basis fire does not affect safe shutdown or result in an unacceptable exposure to the plant.

HNP-FHA-11 11.7-13 REV 28 11/10 FIRE ZONE 1805B This zone is not considered safety related.

DESCRIPTION Respirator Decontamination Room North of the Unit 1 Radwaste Building -el 130 ft

DRAWING NUMBER(S) H-11802

AREA 462 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood, cardboard Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 56,623 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants nearby Portable Extinguishers CO2 - on outside north wall near access door Detectors (type) None

FIRE RESISTANCE RATING Actual See text - Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) 2-NR/outside

HNP-FHA-11 11.7-14 REV 28 11/10 CONSTRUCTION This zone is constructed of nonrated, reinforced concrete walls with concrete floor and nonrated, reinforced concrete ceiling. The main entry door is a fire-rated Class A door. The north wall also contains a large nonrated rollup door. See area 1805 for penetrations.

FIRE PROTECTION There is no automatic detection or suppression in this zone. This zone is provided with a CO2 fire extinguisher located outside the room on the north wall of the building. Yard hydrants and hose houses are located to provide effective hose stream coverage.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire, which assumes total combustion of all combustibles, represents an exposure hazard to the radwaste and turbine buildings. The turbine building wall consists of concrete "T" panels of minimum 4-in. thickness. There are no openings in the wall within approximately 25 ft of the hazard. The radwaste building wall, adjacent to the hazard, is reinforced, solid concrete with no openings within approximately 5 ft of the hazard. The radwaste building contains no Unit 1 or Unit 2 safe shutdown circuits or components. The east wall of this zone, constructed of reinforced concrete with essentially no openings, provides an effective radiant and convective heat shield between this zone and the radwaste building wall opening. There are no fixed combustibles in the immediate vicinity of this opening subject to radiant heat exposure. Based on the substantial construction of the adjacent building walls, the absence of significant, intervening combustibles and a separation distance between the hazard and unprotected openings, the design basis fire does not present an unacceptable exposure to plant structures.

HNP-FHA-11 11.7-15 REV 28 11/10 FIRE AREA 1806 This area is not considered safety related.

DESCRIPTION Unit 1 HVAC Chiller Building Between Unit 1 Reactor and Radwaste Buildings (above HPCI)

DRAWING NUMBER(S) H-11802

AREA 756 ft2

COMBUSTIBLES Oil & Grease Grease Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrant at Condensate Storage Tank Portable Extinguishers CO2; dry chemical Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls E,S,W-S/NR;N-C/NR - Floors, Ceiling or Roof Floor-concrete slab; ceiling-steel - Fixed Openings N/A - Penetrations See text - Doors (Fire-rated Class/Zone no.) 2-NR/outside

HNP-FHA-11 11.7-16 REV 28 11/10 CONSTRUCTION The roof as well as the east, south, and west walls of this area are constructed of nonrated sheet metal. The north wall of this area is also the south exterior wall of the Unit 1 radwaste building addition which is constructed of nonrated concrete. The floor, which is nonrated and constructed of reinforced concrete, is also the roof of the HPCI pump room. There is a double door on the east side of the building and a single door on the west side, neither of which are fire rated. Penetrations through walls or floors in this area are not required to be fire rated.

FIRE PROTECTION There is no automatic fire detection or suppression at this building. A hydrant house is located on the east side of the Unit 1 condensate storage tank approximately 150 ft away. A portable CO2 extinguisher is mounted inside the SE door, and a portable dry chemical extinguisher is mounted inside the NW door of this structure.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown or safety-related equipment and presents no exposure fire hazard to any safe shutdown or safety-related equipment. A fire in this area is not expected to propagate toward any other plant structures since only noncombustible concrete and gravel are in the immediate vicinity. Since the combustible loading of this area is low and no safety-related components are resident, a design basis fire is not expected to have any adverse effect on the ability to achieve and maintain safe shutdown.

HNP-FHA-11 11.7-17 REV 28 11/10 FIRE AREA 1807 This area is not considered safety related.

DESCRIPTION Unit 1 helper cooling tower South of Unit 1 cooling tower no. 1B

DRAWING NUMBER(S) H-11802

AREA 31,000 ft2

COMBUSTIBLES Oil & grease None Cable Cable insulation Class A None Charcoal None Plastics PVC Miscellaneous None Miscellaneous gases None

DESIGN BASIS FIRE Combustible loading Low Max. permissible loading 100,000 Btu/ft2 Fire duration Less than 1 h

FIRE PROTECTION AVAILABLE Suppression (type) None Hose stations None - hydrants nearby Portable extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text. - Floors, ceiling or roof See text. - Fixed openings See text. - Penetrations See text. - Doors (Fire-rated Class/Zone no.) See text.

HNP-FHA-11 11.7-18 REV 28 11/10 CONSTRUCTION The Unit 1 helper cooling tower is a concrete structure assembled from precast or prestressed concrete components. The structural framing is precast reinforced concrete. The fan deck consists of concrete panels. The tower wall is constructed of concrete panels extending down from the fan deck to the top of the air inlet. The cooling tower is divided into 12 cells separated by concrete panels with concrete windscreens on the end cells.

The heat exchanger consists of formed plastic sheets in modules supported from below by structural members and covering the entire interior plan area of the tower. The water distribution piping is PVC. The fan stacks are constructed of heavy, ribbed fire-retardant fiberglass panels bolted together.

The electrical equipment building is a small structure housing the cooling tower MCCs and is a separate building from the cooling tower. The electrical equipment building has a metal structural frame, as well as metal siding and roof. The floor is concrete.

FIRE PROTECTION There is no automatic fire detection or suppression at this building. A hydrant is located approximately 100 ft to the south. Other hydrants are in the area nearby.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe-shutdown or safety-related equipment, and presents no exposure fire hazard to any safe-shutdown or safety-related equipment. A fire in this area is not expected to propagate toward any other plant structures due to its noncombustible concrete construction.

Since the combustible loading of this area is low and no safety-related components are resident, a design basis fire is not expected to have any adverse effect on the ability to achieve and maintain safe shutdown.

12.0 Unit 2 Areas Fire Hazard Analysis HNP-FHA-12 12.1-1 REV 33 3/15 FIRE AREA 2003 This area is not considered safety related.

DESCRIPTION Oil Storage Tank Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11812

AREA 698 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 4,776,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Deluge (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, W-C/3; E-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-12 12.1-2 REV 33 3/15 CONSTRUCTION The north, south, and west walls are 3-h-rated reinforced concrete. The east wall is block and is 3-h rated. The ceiling is concrete and 3-h rated. The floor is nonrated, concrete base slab.

There are fire-rated Class A sliding double doors on both the inside and outside of the doorway in the east wall which access area 0001. The doorway is located approximately 5 ft above floor level to accommodate the volume of the oil in the tanks.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with a full coverage dry pilot activated, auto deluge system. Activation of the deluge system results in an alarm, both locally and in the main control room (MCR). The sliding fire doors automatically close under fire conditions. No manual firefighting equipment is located in this zone. However, manual firefighting equipment is available in area 0001, including a portable foam unit, portable CO2 and dry chemical fire extinguishers, and hose stations.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The only significant fire which can be postulated for this area would be as a result of the rupture of the oil storage tank or piping. Such a fire would not have an incipient stage, thus, an early warning detection system is not provided. The full coverage deluge system provides for rapid extinguishment of any fire which does occur. The fire would be oxygen limited which would retard the rate of combustion until extinguishment. Rapid response of the plant fire brigade would be expected to protect sensitive equipment outside the fire area. These rated walls will contain the fire until the fire can be extinguished. A fire in this area will not affect the capability to achieve and maintain a safe shutdown or result in a significant release of radiation.

HNP-FHA-12 12.1-3 REV 33 3/15 FIRE AREA 2004 This area is considered safety related.

DESCRIPTION Station Battery Room 2A Control Building - el 112 ft

DRAWING NUMBER(S) H-11811, H-11812

AREA 844 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S-C/3; E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) WX/0001

HNP-FHA-12 12.1-4 REV 33 3/15 CONSTRUCTION The north and south walls are reinforced concrete and are 3-h rated. The east and west walls are block and are 3-h rated. The floor is nonrated, reinforced concrete slab and the ceiling is reinforced concrete and 3-h rated. There is a nonrated watertight door in the north wall to area 0001 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage that alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There are, however, hose stations, a portable foam unit and portable CO2, and dry chemical fire extinguishers in adjacent area 0001.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements for complete 3-h-rated barriers has been granted for the nonrated, watertight door to this area by the April 1984 NRC Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area would consist mainly of cable insulation and plastic battery cases. Hydrogen generated by the batteries is maintained at insignificant concentrations by the room ventilation. See calculation 1380-027-C009 in appendix L of this calculation for further details. The available detection would alert the MCR of an incipient fire to ensure prompt response by the plant fire brigade. The low fire loading, substantial or rated wall and door construction, and the available firefighting equipment in area 0001 will preclude propagation of a fire outside area 2004.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-5 REV 33 3/15 FIRE AREA 2005 This area is considered safety related.

DESCRIPTION Station Battery Room 2B Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 869 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S-C/3; E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) WX/0001

HNP-FHA-12 12.1-6 REV 33 3/15 CONSTRUCTION The north and south walls are reinforced concrete and are 3-h rated. The east and west walls are block and are 3-h rated. The floor is nonrated, reinforced concrete slab and the ceiling is reinforced concrete and is 3-h rated. There is a nonrated watertight door in the north wall to zone 0001 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage that alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is neither automatic suppression nor any manual firefighting equipment in this area. There are, however, hose stations, a portable foam unit and portable CO2, and dry chemical fire extinguishers in adjacent area 0001.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements for complete 3-h-rated barriers has been granted for the nonrated, watertight door to this area by the April 1984 NRC Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area would involve primarily plastic battery cases and cable insulation. Hydrogen generated by the batteries is maintained at insignificant concentrations by the dedicated ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. The installed smoke detectors are expected to provide early fire warning both to the MCR and locally to ensure prompt response by the plant fire brigade. The rated walls and substantial door construction, along with the available firefighting equipment from the adjacent area preclude propagation of a fire beyond the area boundaries. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-7 REV 33 3/15 FIRE AREA 2006 This area is considered safety related.

DESCRIPTION Unit 2 Water Analysis Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 666 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic, PVC, ladders Miscellaneous Rubber Miscellaneous Gases Dimethylamine

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 40,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S-C/3; E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0007

HNP-FHA-12 12.1-8 REV 33 3/15 CONSTRUCTION The north and south walls are reinforced concrete and are 3-h rated. The east and west walls are block and are 3-h rated. The floor is nonrated, reinforced concrete and the ceiling is 3-h-rated, reinforced concrete. There is a 3-h-rated, fire-rated Class A double door in the east wall to area 0007.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is not equipped with any detection or suppression system. However, portable CO2 fire extinguishers and a hose station are provided in adjacent areas 0007 and 2101.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since there is no installed detection and the area is, at times, unoccupied, a fire in this area may go undetected until it is fully developed. The door to area 0007 is a 3-h-rated, fire-rated Class A double door and will restrict the propagation of heat and gases from a design basis fire. The low combustible loading and the rated construction preclude the propagation of a fire outside the area. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-9 REV 33 3/15 FIRE AREA 2008 This area is considered safety related.

DESCRIPTION Unit 2 AC Inverter Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 406 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-12 12.1-10 REV 33 3/15 CONSTRUCTION All walls are block and are 3-h rated. The floor is nonrated, concrete base slab. The ceiling is 3-h-rated reinforced concrete. There is a fire-rated Class A door in the south wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full coverage smoke detectors which alarm both locally and in the MCR. There is no automatic suppression coverage or manual firefighting equipment. However, hose stations, a portable foam unit, and portable CO2 and dry chemical fire extinguishers are available in adjacent area 0001 for manual firefighting.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The only combustibles in this area are plastic battery cases. Hydrogen generated by the batteries is maintained at insignificant levels by the ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. Due to the low combustible loading and substantial construction, a fire will not propagate outside the area. The smoke detection will provide an early warning alarm both locally and in the MCR ensuring a prompt response by the plant fire brigade. The available manual firefighting equipment in the adjacent area is adequate to extinguish the fire. A fire in the area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-11 REV 33 3/15 FIRE AREA 2009 This area is considered safety related.

DESCRIPTION RPS Battery North Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 129 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-12 12.1-12 REV 33 3/15 CONSTRUCTION All area walls are block and are 3-h rated. The floor is nonrated, reinforced concrete slab and the ceiling is 3-h-rated reinforced concrete. There is a fire-rated Class A door in the west wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full smoke detector coverage which alarms both locally and in the main control room. This area has no automatic suppression or manual firefighting equipment.

There are, however, hose stations, a portable foam unit, and portable CO2 and dry chemical fire extinguishers available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The only combustibles in this area are plastic battery cases. Hydrogen generated by the batteries is maintained at insignificant levels by the area ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. Due to the low combustible loading and rated construction, a fire will not propagate outside the area. The smoke detection provides an early warning alarm both locally and in the MCR ensuring prompt response to and extinguishment of the fire by the plant fire brigade using the available manual firefighting equipment in the adjacent area.

A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-13 REV 33 3/15 FIRE AREA 2010 This area is considered safety related.

DESCRIPTION RPS Battery South Room Control Building - el 112 ft

DRAWING NUMBER(S) H-11811

AREA 129 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Battery cases Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0001

HNP-FHA-12 12.1-14 REV 33 3/15 CONSTRUCTION All area walls are block and are 3-h rated. The floor is nonrated, reinforced concrete slab and the ceiling is 3-h-rated reinforced concrete. There is a fire-rated Class A door in the west wall to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which provides alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in this area. However, hose stations, a portable foam unit, and portable CO2 and dry chemical fire extinguishers are available in adjacent area 0001.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The only combustibles in this area are plastic battery cases. Hydrogen generated by the batteries is maintained at insignificant levels by the area ventilation system. See calculation 1380-027-C009 in appendix L of this document for further details. Due to the low combustible loading and rated construction, a fire will not propagate outside the area. The smoke detection provides an early warning alarm in the MCR ensuring prompt response to and extinguishment of the fire by the plant fire brigade using the available manual firefighting equipment in the adjacent area. A fire in the area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-15 REV 33 3/15 FIRE AREA 2013 This area is considered safety related.

DESCRIPTION RPS MG Set Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 259 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014, 0040

HNP-FHA-12 12.1-16 REV 33 3/15 CONSTRUCTION All walls are block and 3-h rated. The floor and ceiling are 3-h-rated, reinforced concrete.

There are two fire-rated Class A doors, one in the east wall to zone 0040 and the other in the west wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. Hose stations and portable CO2 and dry chemical fire extinguishers are located in adjacent area 0014 for manual firefighting.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The smoke detectors located in this area are expected to detect the combustion products from an incipient fire and provide an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. Moreover, the low fire loading and rated construction preclude the propagation of a design basis fire beyond the boundaries of this area. The presence of health physics and security personnel in the close vicinity of this area and the available manual firefighting equipment in adjacent area 0014 ensure prompt detection and suppression of the fire. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-17 REV 33 3/15 FIRE AREA 2014 This area is considered safety related.

DESCRIPTION Unit 2 Switchgear Access Hallway Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 544 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; S, E, W-B/2 - Floors, Ceiling or Roof Concrete - Fixed Openings OD/0014; 2-OP/2021 - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2016, 2017, 2018, 2019, 2020; 2-A/2021

HNP-FHA-12 12.1-18 REV 33 3/15 CONSTRUCTION The north wall is reinforced concrete and 12-in. block and is 3-h rated. The south, east, and west walls are block and are 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and 3-h rated. There are five fire-rated Class A sliding doors; one in the east wall to area 2020, three in the south wall to areas 2016, 2019, and 2017 and one in the west wall to area 2018. There is an open passageway in the north wall to area 0014 (see exemptions), and two fire-rated Class A swinging fire doors to area 2021.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full coverage linear thermal heat detection which alarm both locally and in the MCR. The area is not equipped with any automatic suppression system. A portable CO2 fire extinguisher is in the area. A hose station is also located in adjacent area 0014 for manual firefighting.

APPENDIX R EXEMPTIONS An exemption has been granted from the separation requirements of Section III.G.2 of Appendix R for the 2-h walls (south, east, and west) and the open passageway to area 0014 by the April 1984 NRC Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area will involve primarily cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominately IEEE-383 qualified which will ensure that the fire develops slowly. Available linear thermal detectors will detect the fire and provide an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. Manual firefighting equipment, substantial construction, and low fire loading preclude the propagation of a design basis fire outside area 2014. Fire propagation through the open passageway is precluded by the wet pipe sprinklers in area 0014 adjacent to the opening. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-19 REV 33 3/15 FIRE AREA 2015 This area is considered safety related.

DESCRIPTION Unit 2 Annunciator Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 200 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/0014

- Fire Wraps See Text

HNP-FHA-12 12.1-20 REV 33 3/15 CONSTRUCTION All walls are block and are 3-h rated. The floor and the ceiling are 3-h-rated, reinforced concrete. There is a fire-rated Class A sliding door in the south wall to area 0014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document. A 3 HR fire wrap is installed on conduit 2E22154 while routed through this fire zone. This fire wrap is required to maintain a 3 HR barrier between redundant power trains of the 120VAC Critical Instrument Cabinets as required by Section III.G.2 of Appendix R.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in this area. There are hose stations and CO2 and dry chemical portable fire extinguishers in adjacent area 0014.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The detection system in this area will provide an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade to extinguish the fire using the manual firefighting equipment provided in the adjacent area. The low fire loading and rated construction preclude the propagation of fire beyond the boundaries of the area. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-21 REV 33 3/15 FIRE AREA 2016 This area is considered safety related.

DESCRIPTION West 600V Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 376 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 115,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E-B/2; S-C/3; W-B, H/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2014

HNP-FHA-12 12.1-22 REV 33 3/15 CONSTRUCTION The south wall is reinforced concrete and is 3-h rated. The west wall is a block and fire retardant material composite and is 3-h rated. The north and east walls are block and are 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and are 3-h rated. There is a fire-rated Class A sliding door in the north wall to area 2014. Also, there is a 1.5-in.-high oil retaining curb in the doorway of fire door 2L48-2C09.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in this area. There is a portable CO2 fire extinguisher available in adjacent area 2014. A hose station is also available in area 0014.

APPENDIX R EXEMPTIONS The north and east 2-h-rated walls have an approved exemption from Section III.G.2 requirements of Appendix R per the April 1984 NRC Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated wall and door construction along with the available manual firefighting equipment in area 2014 preclude propagation of a fire outside this area. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-23 REV 33 3/15 FIRE AREA 2017 This area is considered safety related.

DESCRIPTION East 600-V Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 376 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 132,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, W,-B/2; S-C/3; E-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2014

HNP-FHA-12 12.1-24 REV 33 3/15 CONSTRUCTION The south wall is reinforced concrete and is 3-h rated. The east wall is block and is 3-h rated.

The north and west walls are block and are 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and are 3-h rated. There is a fire-rated Class A sliding door in the north wall to area 2014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage that alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in this area. There is a portable CO2 fire extinguisher located in adjacent area 2014 and a hose station located in nearby area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h fire barriers has been granted for the 2-h-rated walls in this area per the April 1984 NRC Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated wall and door construction, available manual firefighting equipment in area 2014, and moderate combustible loadings preclude the propagation of a fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-25 REV 33 3/15 FIRE AREA 2018 This area is considered safety related.

DESCRIPTION West DC Switchgear Room Control Building -el 130 ft

DRAWING NUMBER(S) H-11814

AREA 249 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; E, S-B/2; W-B, H/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2014

HNP-FHA-12 12.1-26 REV 33 3/15 CONSTRUCTION The north wall is 3-h-rated, reinforced concrete. The south and east walls are 2-h-rated block (see exemptions). The west wall is a concrete block and Promat board composite and is 3-h rated. There is one fire-rated Class A sliding door in the east wall to area 2014. The floor and ceiling are 3-h-rated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full coverage smoke detection which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression system or manual firefighting equipment in this area. There is a portable CO2 fire extinguisher in adjacent area 2014 and a hose station is available in nearby area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h fire barriers has been granted for the 2-h-rated walls in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area would involve primarily cable which is predominately IEEE-383 qualified, therefore ensuring slow fire development. The low fire loading, rated construction, and lack of intervening combustibles in the vicinity of the door preclude propagation of the design basis fire beyond the boundaries of this area. The available firefighting equipment in adjacent area 2014 is adequate to extinguish the fire. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-27 REV 33 3/15 FIRE AREA 2019 This area is considered safety related.

DESCRIPTION Transformer Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 172 ft2

COMBUSTIBLES Oil & Grease Transformer silicone oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 178,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E, W-B/2; S-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2014

HNP-FHA-12 12.1-28 REV 33 3/15 CONSTRUCTION The south wall is reinforced concrete and is 3-h rated. The north, east, and west walls are block and are 2-h rated (see exemptions). The floor and ceiling are reinforced concrete and are 3-h rated. There is a fire-rated Class A door in the north wall to area 2014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage that alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in this area. There is a portable CO2 fire extinguisher in adjacent area 2014 and a hose station is available in nearby area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h fire barriers has been granted for the 2-h-rated walls in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this area, the available smoke detectors will alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated wall and door construction along with the available manual firefighting equipment from area 2014 preclude the propagation of a fire outside this area. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-29 REV 33 3/15 FIRE AREA 2020 This area is considered safety related.

DESCRIPTION East DC Switchgear Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 263 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; S, W-B/2; E-B/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone No.) A/2014

HNP-FHA-12 12.1-30 REV 33 3/15 CONSTRUCTION The south and west walls are 2-h-rated block (see exemptions). The north and east walls are 3-h rated and are reinforced concrete and block, respectively. The floor and ceiling are reinforced concrete and are 3-h rated. There is a fire-rated Class A sliding door in the west wall to area 2014.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full smoke detector coverage which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression or manual firefighting equipment in the area. There is a portable CO2 fire extinguisher in adjacent area 2014 and a hose station in nearby area 0014.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h barriers has been granted for the 2-h walls in this area per the April 1984 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE The smoke detection in this area is expected to provide both local and MCR alarms to ensure prompt response by the plant fire brigade. The low fire loading, rated construction and lack of intervening combustibles in the vicinity of the door, preclude propagation of the design basis fire beyond the boundaries of this area. The available firefighting equipment in adjacent area 2014 is adequate to extinguish the fire. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-31 REV 33 3/15 FIRE AREA 2021 This area is considered safety related.

DESCRIPTION Unit 2 Switchgear Hallway Enclosure Control Building - el 130 ft

DRAWING NUMBER(S) H-11814

AREA 60 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 10,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S, E, W-B/3; N-C/3 - Floors, Ceiling or Roof Concrete block - Fixed Openings 2-OP/2014 - Penetrations See text - Doors (Fire-rated Class/Zone No.) 2-A/2014

HNP-FHA-12 12.1-32 REV 33 3/15 CONSTRUCTION The north wall is reinforced concrete and is 3-h rated. The south, east, and west walls are 12-in. block and are 3-h rated. There are two fire-rated Class A swinging fire doors in the south wall to area 2014. The floor and ceiling are reinforced concrete and are 3-h rated.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is not equipped with any automatic suppression system. There are portable CO2 fire extinguishers located in adjacent area 2014. A water hose station is located in accessible area 0014K for manual firefighting.

Automatic fire detection will be extended into this area.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A credible design basis fire does not exist for this area due to low combustible loading.

However, manual firefighting equipment, substantial construction, and the low fire loading preclude the propagation of a design basis fire to outside of area 2021. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.1-33 REV 33 3/15 FIRE AREA 2023 This area is not considered safety related.

DESCRIPTION Oil Conditioner Room Control Building - el 130 ft

DRAWING NUMBER(S) H-11815

AREA 2,043 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 642,500 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Deluge (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, S, W-C/3; E-B, H/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings MH/0101 - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/0014

HNP-FHA-12 12.1-34 REV 33 3/15 CONSTRUCTION The north, south, and west walls are concrete and 3-h rated. The east wall is a 3-h-rated composite of concrete block and Promat board. There is a fire-rated Class A door in the north wall accessing area 0014. The entry is provided with a high curb designed to contain the maximum postulated oil spill to the area. The floor and ceiling are reinforced 3-h-rated concrete. The ceiling contains a shaft that extends up to el 164 ft. The walls of this shaft are 3-h-rated reinforced concrete. The top of the shaft is covered by a nonrated metal and concrete hatch cover (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full deluge suppression system coverage, which is dry pilot actuated.

Portable CO2 and dry chemical fire extinguishers and a hose station are located outside this area in area 0014 for manual firefighting. Since the only credible fire for this area is an oil fire with no incipient stage, an early warning detection system is not provided. Activation of the suppression system results in an alarm, both locally and in the MCR.

APPENDIX R EXEMPTION An exemption has been requested from the Section III.G.2 requirement for complete 3-h-rated barriers for the nonrated hatch in the ceiling of this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The only significant fire that can be postulated for this area would be as a result of the ignition of the turbine lube oil or EHC fluid. The full-coverage deluge sprinklers provide for rapid extinguishment of this type of fire. The rated or substantial construction of the area boundaries will contain the fire until it can be extinguished. Activation of the suppression system results in an alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. In the event of a failure of the suppression system, the fire brigade can extinguish the fire using the available manual suppression located in adjacent area 0014. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.2-1 REV 33 3/15 FIRE AREA 2101 This area is not considered safety related.

DESCRIPTION Unit 2 Turbine Building Unit 2 Turbine Building el 112 ft, 130 ft, and 147 ft

DRAWING NUMBERS H-11812, H-11816, H-11820, H-11821, H-11822

AREA 79,815 ft2

COMBUSTIBLES Oil & Grease Lube oil, grease, transformer oil, gasoline Cable Cable insulation Class A Paper, clothing, trash, desks, files, rags, wood, plank, tape (cloth) Charcoal Charcoal Plastics Plastic, ladders, PVC Miscellaneous Rubber, solvent, resin Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 102,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Preaction; wet pipe; Water spray (PC)

(see section 7.0) Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3,Open; S-C,B/NR; E-C/2,NR; W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings OS,OH,CH/0101;0P/0007,1101,2104 - Penetrations See text

- Doors (Fire-rated Class/Zone no.) 2-NR/Outside;NR/3104

HNP-FHA-12 12.2-2 REV 33 3/15 CONSTRUCTION This area is bounded by the control building, east corridor and cableway, and Unit 1 west cableway on the north. The control building boundary is constructed of reinforced concrete and is 3-h rated. The boundary at the east corridor, el 112 ft, is an area boundary established only for the purpose of separating a common control building numbered area (0007) from this Unit 2 numbered area. No rated barrier is required since path 2 is used for safe shutdown for both units in both areas. Similarly, the boundary between the west cableway portion of this area and the Unit 1 west cableway is established only for the purpose of separating a Unit 1 numbered area (1101) from this Unit 2 numbered area. The boundary at the east cableway, el 130 ft, is established by the cableway (area 2104) suppression system (see exemptions). The east boundary is the nonrated reinforced concrete turbine building exterior wall adjacent to the 3-h-rated reactor and radwaste building walls, except for the walls (including the floor and ceiling) around area 2104. These nonrated reinforced concrete walls are exempted barriers (see exemptions). The west boundary is established by the nonrated reinforced concrete turbine building and west cableway exterior walls. The south boundary is also established by the nonrated reinforced concrete turbine building exterior walls. Areas 2102 and 2103 (stairwells) are contained within this area and are surrounded with 2-h-rated block walls. The floor and ceiling are nonrated reinforced concrete, except for the portion of floor over the control building switchgear and transformer rooms, which is 3-h rated. The ceiling is evaluated as an area boundary in the area 0101 text.

This area has three nonrated doors; one to area 2104 and two to the outside. There are five fire-rated Class B doors, two to area 2103 and three to area 2102. There are two fire-rated Class A doors, one to area 2301 and the other to area 0001.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with dry pilot actuated, preaction sprinklers over the oil spill sections of the area at el 112 and 130 ft, an automatic water spray system over the H2 seal oil unit activated by a dry pilot system, and wet pipe sprinklers throughout the west cableway. Smoke detectors are provided in the switchgear mezzanines and under the southwest (2101N) mezzanine. The area is equipped with H2O hose stations and portable CO2 and dry chemical fire extinguishers.

APPENDIX R EXEMPTIONS The barrier between this area and the 130-ft elevation east cableway (area 2104) is established by the cableway sprinkler system at the south end of area 2104 and by the west wall, floor, and ceiling of the cableway. These area boundaries are exempted from the complete 3-h barrier requirements of Section III.G.2 of Appendix R, per the April 1984 NRC Safety Evaluation Report (SER).

HNP-FHA-12 12.2-3 REV 33 3/15 CONSEQUENCES OF DESIGN BASIS FIRE Because of the smoke detection provided at locations of significant hazards in this area, early detection of a fire is expected. Suppression has also been provided at locations which represent significant hazards (i.e., the oil spill zones). Other hazards are cable insulation or widely separated concentrations of ordinary combustibles (wood, paper, plastics, etc.). The cable used at E. I. Hatch Nuclear Plant is predominately IEEE-383 qualified which will ensure that any cable fires which occur are slow developing. The available manual firefighting equipment is adequate to extinguish these fires. Due to the suppression and detection provided and the substantial construction of the area boundaries, it is unlikely that a fire will propagate outside the area.

Because of the large dilution volume of the turbine building, flashover is not expected to occur and fires will remain localized even with a failure of the primary suppression system. In the unlikely event that propagation occurs through the openings to areas 1101 and/or 0101, only safe shutdown path 1 circuits and components will be affected, since all path 2 equipment throughout all three areas is protected as necessary. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.2-4 REV 33 3/15 FIRE ZONE 2101A This zone is not considered safety related.

DESCRIPTION Area Under Main Condenser Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 18,850 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, clothing, trash, desks, files Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Preaction (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C,B/3,NR; S-C,B/NR; E-C/2,NR; W-C/NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings OS,OH,CH/2101K - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) 2-NR/2101H

HNP-FHA-12 12.2-5 REV 33 3/15 CONSTRUCTION All the walls are reinforced concrete and nonrated, except the north wall from column line TG to TI which is 3-h rated and the portion of the east wall adjacent to area 2103 which is 2-h rated.

The floor is nonrated reinforced concrete base slab. The ceiling is concrete and open grate and is nonrated. There are two nonrated doors, one in the north wall to zone 2101H and one in the south wall, also to zone 2101H. See area 2101 for penetrations.

FIRE PROTECTION This zone contains partial coverage preaction sprinklers actuated by a dry pilot system over the oil spill sections (see figures for specific coverage). Actuation of the suppression system results in an alarm, both locally and in the main control room (MCR). Manual firefighting equipment consists of hose stations, a CO2 portable fire extinguisher, and a portable dry chemical fire extinguisher.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this zone is considered to be a fast burning fire due to the potential for oil and grease spills/leakage from higher elevations along the west wall. This zone has been provided with an automatic dry pilot detection and sprinkler system which provides both local and MCR alarms to ensure prompt response by the plant fire brigade. Manual firefighting equipment located throughout the zone is adequate to extinguish the fire. The substantial concrete wall construction is expected to preclude lateral propagation of the fire outside of this zone. Propagation to the zones above, through the grating, is of no consequence since all redundant safe shutdown circuits and components throughout area 2101 are protected as necessary.

HNP-FHA-12 12.2-6 REV 33 3/15 FIRE ZONE 2101C This zone is not considered safety related.

DESCRIPTION Condensate Pump Area Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 4659 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A None Charcoal Charcoal Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 60,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S, N, E-C,B/NR; W-C/NR,B/2 @ 2102 - Floors, Ceiling, or Roof Concrete

- Fixed Openings OH,CH/2101J; OD/2101H; OP/2101E,D,G - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) B/2102; 3-NR/2101G; 2-NR/2101D; NR/2101E, 2101I

HNP-FHA-12 12.2-7 REV 33 3/15 CONSTRUCTION The wall adjacent to zones 2101D and 2101G is block and is nonrated. The walls around area 2102 (southwest stairwell) are block and are 2-h rated. All other walls are nonrated, reinforced concrete. The floor is reinforced concrete base slab. The ceiling is nonrated reinforced concrete, containing several concrete covered and open hatches to zone 2101J above this zone. There is a fire-rated Class B door to area 2102, two nonrated doors to zone 2101D, one nonrated door to zone 2101E, one nonrated door to zone 2101I, and three nonrated doors to zone 2101G. There is an open doorway to zone 2101H. See area 2101 for penetrations.

FIRE PROTECTION This zone is not equipped with an automatic suppression or detection system. Manual firefighting equipment consists of a hose station and CO2 portable fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE The open passageways to zone 2101H, the hatch to zone 2101J, and the nonrated doors to zones 2101D, 2101E, and 2101G create a fire propagation possibility. However, the substantial construction, low combustible loading, and absence of intervening combustibles between localized concentrations of combustible materials preclude the propagation of a fire to adjacent zones. The available firefighting equipment in this zone is adequate to extinguish the fire.

Propagation of a fire to other zones in this area, if it did occur, would not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-8 REV 33 3/15 FIRE ZONE 2101D This zone is not considered safety related.

DESCRIPTION Steam Jet Air Ejector Rooms Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 1383 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Paper, clothing, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S-C,B/NR; N,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) 2-NR/2101C

HNP-FHA-12 12.2-9 REV 33 3/15 CONSTRUCTION All the walls are reinforced concrete and are nonrated except a portion of the south wall which is nonrated block. The floor and ceiling are nonrated, reinforced concrete. There are two nonrated doors in the south wall accessing zone 2101C. See area 2101 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. There are, however, portable CO2 fire extinguishers and a hose station in adjacent zone 2101C for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire creates a fire propagation threat to the adjacent zone; however, the absence of any intervening combustibles between this zone and the adjacent zone, the low combustible loading, and substantial construction preclude propagation of the fire to the adjacent zone. The available firefighting equipment in adjacent zone 2101C is adequate to extinguish the fire in this zone. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-10 REV 33 3/15 FIRE ZONE 2101E This zone is not considered safety related.

DESCRIPTION Vacuum Pump Room Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 455 ft2

COMBUSTIBLES Oil & Grease Grease Cable None Class A None Charcoal None Plastics PVC Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S,W,N-C/NR; E-C,B/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/2101C - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) NR/2101C

HNP-FHA-12 12.2-11 REV 33 3/15 CONSTRUCTION All walls are nonrated, reinforced concrete with the exception of the east wall which is nonrated block and nonrated, reinforced concrete. The ceiling is nonrated, reinforced concrete and the floor is nonrated concrete base slab. There is a nonrated door in the south wall to zone 2101C.

See area 2101 for penetrations.

FIRE PROTECTION There is no detection or suppression in this zone; however, there are portable CO2 fire extinguishers and a hose station in adjacent zone 2101C for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible material. The negligible fire loading, substantial construction, and absence of intervening combustibles near the boundaries between this and adjacent zones preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2101C is adequate to extinguish the fire.

HNP-FHA-12 12.2-12 REV 33 3/15 FIRE ZONE 2101F This zone is not considered safety related.

DESCRIPTION Condensate Polishing Room Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 1,407 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 26,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR; W-C,B/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/2101J; OD/2101H - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.2-13 REV 33 3/15 CONSTRUCTION All walls are nonrated, reinforced concrete with the exception of the west wall which is nonrated block and nonrated, reinforced concrete. The floor is nonrated base slab and the ceiling is nonrated, reinforced concrete with covered equipment hatches to zone 2101J above. There is an open doorway to zone 2101H. See area 2101 for penetrations.

FIRE PROTECTION There are no detection or suppression systems in this zone. However, a hose station, a portable dry chemical fire extinguisher, and portable CO2 fire extinguishers are available in adjacent zone 2101H.

CONSEQUENCES OF DESIGN BASIS FIRE The open passageway with intervening combustibles consisting of trash, clothing, rubber, and plastic near the doorway create a fire propagation hazard to adjacent zone 2101H. The lack of detection or suppression in either zones 2101F or 2101H also contribute to the fire hazard. The substantial wall construction and low combustible loading, combined with the absence of any other localized concentrations of combustibles within a significant distance from the doorway, make propagation of the design basis fire unlikely. The available firefighting equipment in adjacent zone 2101H is sufficient to extinguish the fire. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-14 REV 33 3/15 FIRE ZONE 2101G This zone is not considered safety related.

DESCRIPTION Offgas Recombiner Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 1,333 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C,B/NR; S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/Outside - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) 3-NR/2101C

HNP-FHA-12 12.2-15 REV 33 3/15 CONSTRUCTION All walls are nonrated reinforced concrete with the exception of the north wall which is nonrated block and nonrated reinforced concrete. The floor and ceiling are nonrated reinforced concrete.

The ceiling contains two large hatches to the outside with substantial concrete covers. There are three nonrated doors in the north wall to zone 2101C. See area 2101 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. There are, however, CO2 portable fire extinguishers and a hose station available in adjacent zone 2101C for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading, substantial construction, and lack of intervening combustibles in the vicinity of the doors preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2101C is adequate to extinguish a fire, which may result from the introduction of transient combustibles to this zone.

HNP-FHA-12 12.2-16 REV 33 3/15 FIRE ZONE 2101H This zone is not considered safety related.

DESCRIPTION East Corridor Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11820

AREA 6,302 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Wood, plank, paper, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 45,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2; Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/3,Open; S,E-C/NR; W-B,C/NR,2 - Floors, Ceiling, or Roof Concrete

- Fixed Openings OD/2101C,2101F,OP/0007 - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) A/2301; B/2103; 2-NR/2101A

HNP-FHA-12 12.2-17 REV 33 3/15 CONSTRUCTION The south and east walls are reinforced concrete and nonrated. The east wall is adjacent to the 3-h-rated, rated, below grade reactor and radwaste building exterior walls. The west wall is nonrated, reinforced concrete with the exception of the walls around the stairwell (area 2103) which are block and 2-h rated. The north wall is 3-h-rated, reinforced concrete from column lines TB to TG. The balance of the north wall is open to area 0007 (see area 2101 text). The ceiling and floor are nonrated, reinforced concrete. There are two nonrated doors in the west wall to zone 2101A, an open doorway in the south wall to zone 2101F, and a open doorway to zone 2101C in the south portion of the zone. There is a fire-rated Class A fire door in the east wall to area 2301 and a fire-rated Class B door to area 2103 in the west wall. See 2101 for penetrations.

FIRE PROTECTION There is no detection or automatic suppression in this zone. However, there are hose stations and portable CO2 fire extinguishers in the zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The lack of automatic detection and suppression systems, the open passageways in the south wall to zone 2101F and in the west wall to zone 2101C, and the opening to area 0007 in the north wall create a fire propagation hazard to these adjacent zones and areas. However, the low combustible loading and substantial wall construction reduce the potential for propagation beyond this zone. In addition, combustibles consist predominately of IEEE-383 qualified, fire retardant cable which ensures slow fire development, allowing the plant fire brigade ample time to respond. The available firefighting equipment in this zone is adequate to extinguish a fire.

Propagation of a fire to other zones in this area or to area 0007 (as discussed under Construction in the area 2101 text), will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-18 REV 33 3/15 FIRE ZONE 2101I This zone is not considered safety related.

DESCRIPTION West Cableway Unit 2 Turbine Building - el 112 ft

DRAWING NUMBER(S) H-11812, H-11820

AREA 3,605 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 746,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0)

Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-Open; S,W,-C/NR; E-C/3,NR - Floors, Ceiling, or Roof Concrete

- Fixed Openings OP/1101 - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) A/0001; NR/2101C

HNP-FHA-12 12.2-19 REV 33 3/15 CONSTRUCTION All the walls are reinforced concrete and nonrated, with the exception of the east wall adjacent to the control building from column line T12 to T14 where it is 3-h rated. The north zone boundary is open to area 1101. (This boundary is an "analysis" boundary only, established to separate a Unit 2 area from a Unit 1 area. A fire that propagates through this boundary will not affect safe shutdown. See area 2101 or 1101 for further details). The floor and ceiling are nonrated reinforced concrete. There is a fire-rated Class A door to area 0001 and a nonrated door to zone 2101C. See area 2101 for penetrations.

FIRE PROTECTION This zone has full wet pipe sprinkler coverage. No manual firefighting equipment is located in this zone. However, hose stations located in zone 2101C and area 0001 are capable of directing an effective stream into this zone. Extra hose lengths, which allow full coverage of the zone by hose stream, are available to the plant fire brigade. Portable CO2 extinguishers are also available from zone 2101C and area 0001.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this zone, actuation of the wet pipe suppression system will provide both local and MCR alarms. The combustible loading in this zone consists almost entirely of cable insulation, which is predominantly IEEE-383 qualified and will ensure slow fire development, allowing ample time for the plant fire brigade to respond. Since there is no equipment in this zone that requires modification or maintenance, the introduction of transient combustibles is infrequent. Thus, the possibility of a fire is remote. In the unlikely event that a fire occurs, the wet pipe sprinkler would provide for rapid extinguishment. The substantial concrete walls are sufficient to contain the fire until it is brought under control.

HNP-FHA-12 12.2-20 REV 33 3/15 FIRE ZONE 2101J This zone is not considered safety related.

DESCRIPTION Turbine Building Working Floor Unit 2 Turbine Building - el 130 ft

DRAWING NUMBER(S) H-11821, H-11822

AREA 14,185 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil, transformer oil Cable Cable insulation Class A Paper, tape (cloth), trash Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Solvent, rubber, resin Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 109,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR,B/NR,Open; E,S,W-C/NR,B/2 @ 2101,2103 - Floors, Ceiling, or Roof Concrete

- Fixed Openings OH,CH/0101,2101C;OP/2101M,N,2104; CH/2101F - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) B/2102; 2-NR/Outside; NR/2101K

HNP-FHA-12 12.2-21 REV 33 3/15 CONSTRUCTION All the walls are concrete and nonrated with the exception of the walls around the stairwells (areas 2102 and 2103) which are block and 2-h rated. Zones 2101M and 2101N at el 147 ft are open to this zone. The floor is concrete with open hatches to zone 2101C and concrete covered hatches to zone 2101F. The ceiling is concrete and contains an open hatch and a closed hatch to area 0101. There is a nonrated door in the north wall to zone 2101K and a nonrated door and a rollup railroad door in the east wall to the outside. There is a fire-rated Class B door to zone 2102. There is an open passageway to area 2104 (see exemptions in area 2101). See area 2101 for penetrations.

FIRE PROTECTION This zone is equipped with an automatic fixed water spray system for the generator hydrogen seal oil unit actuated by the dry pilot portion of the system. Smoke detectors are located in the southwest corner under the el 147 ft platform. There are H2O hose stations and portable CO2 fire extinguishers in this zone for manual firefighting. The detection systems in this zone alarm both locally and in the MCR to ensure prompt response by the plant fire brigade.

CONSEQUENCES OF DESIGN BASIS FIRE The open passageways present a fire propagation hazard to the adjacent zones. However, the installed suppression and detection systems at the primary hazards in this zone ensure rapid detection of a fire and prompt response by the plant fire brigade. Manual firefighting equipment in the zone is adequate for the fire. Propagation to area 2104 is prevented by the full coverage suppression system in area 2104 as is discussed in the area 2104 text. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-22 REV 33 3/15 FIRE ZONE 2101K This zone is not considered safety related.

DESCRIPTION Turbine Building - 130-ft Main Condenser Area Unit 2 Turbine Building el - 130 ft and 147 ft

DRAWING NUMBER(S) H-11816, H-11821, H-11822

AREA 22,081 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal Charcoal Plastics Plastic Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Preaction (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/3; W,S-C/NR; E-C/NR,2 - Floors, Ceiling, or Roof Concrete

- Fixed Openings OS,OH,CH/2101A,0101; SG/0101 - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone no.) NR/2101J,2104

HNP-FHA-12 12.2-23 REV 33 3/15 CONSTRUCTION All the walls are reinforced concrete and nonrated with the exception of the north wall which is 3-h rated and the east wall at column line T20 adjacent to the stairwell (area 2103), which is 2-h rated. The ceiling and floor are reinforced concrete and open grating and are nonrated, with the exception of the floor of the main steam line portion of the zone over the control building switchgear and transformer section, which is 3-h rated. There are two nonrated doors; one in the south wall to zone 2101J and the other in the east wall to area 2104. The zone boundaries adjacent to area 2104 are exempted fire barriers (see area 2101 for exemptions). There is an open stairway and an open hatch to zone 2101A. There is also an open stairway and an open hatch to area 0101I. See area 2101 for penetrations.

FIRE PROTECTION Partial preaction sprinkler coverage actuated by a dry pilot system is provided in the west-central part of this zone, which is a potential oil spill/leak section of the zone. Activation of the suppression system results in an alarm, both locally and in the MCR. Manual firefighting equipment consists of hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE The primary hazards in this zone are those associated with potential oil leakage/rupture and cable insulation. The oil spill section is equipped with a preaction sprinkler system. Actuation of the system results in an alarm, both locally and in the MCR to ensure a prompt response by the plant fire brigade. In the event of a failure of the sprinkler system, manual firefighting equipment could be used to extinguish the fire. A fire involving cable would be slow in developing, providing further assurance that detection and suppression would occur in the early stages of the fire. The remaining combustibles are widely separated. Due to the substantial construction of the walls, a fire is not expected to propagate beyond the zone boundaries. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.2-24 REV 33 3/15 FIRE ZONE 2101M This zone is not considered safety related.

DESCRIPTION East Switchgear Mezzanine Unit 2 Turbine Building - el 147 ft

DRAWING NUMBER(S) H-11822

AREA 2,007 ft2

COMBUSTIBLES Oil & Grease Gasoline, transformer oil Cable Cable insulation Class A Wood, paper, tape (cloth), trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E,N-C/NR; S-Open;W-B,C/2,NR,Open,B/2 @ 2103 - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/2101J - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) B/2103

HNP-FHA-12 12.2-25 REV 33 3/15 CONSTRUCTION The east and north walls are reinforced concrete and nonrated. A portion of the east wall is adjacent to the 3-h-rated radwaste building wall. The west wall is block and 2-h rated around the stairwell (area 2103) and nonrated, reinforced concrete adjacent to the main condenser area. The south end of the zone is open to zone 2101J. The ceiling and floor are nonrated, reinforced concrete. There is a fire-rated Class B door to area 2103. See area 2101 for penetrations.

FIRE PROTECTION This zone is equipped with smoke detection which provides an early warning alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. There is no automatic suppression; however, a CO2 portable fire extinguisher and an H2O hose station are provided in this zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The open boundary on the south side of the zone presents a fire propagation hazard to zone 2101J and area 0101. However, the low combustible loading and large dilution volume in the adjacent turbine building preclude the propagation of the fire to any other adjacent areas or zones. Propagation to area 0101 is not considered credible as is discussed in the texts for areas 2101 and 0101. Propagation to zone 2101J is acceptable since all redundant safe shutdown circuits and components throughout area 2101 have been protected as necessary.

The installed smoke detectors will provide an alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. Manual firefighting equipment located in this zone is sufficient to extinguish the fire.

HNP-FHA-12 12.2-26 REV 33 3/15 FIRE AREA/ZONE 2101N This zone is not considered safety related.

DESCRIPTION West Switchgear Mezzanine Unit 2 Turbine Building - el 147 ft

DRAWING NUMBER(S) H-11822

AREA 3,548 ft2

COMBUSTIBLES Oil & Grease Transformer oil Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 118,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-Open; W,S-C/NR; E-B/2,Open - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/2101J - Penetrations See area 2101 text - Doors (Fire-rated Class/Zone No.) B/2102

HNP-FHA-12 12.2-27 REV 33 3/15 CONSTRUCTION The north boundary is open to zone 2101J. The south and west walls are reinforced concrete and are nonrated. The east wall is block around stairwell 2102 and open to zone 2101J elsewhere. The floor and ceiling are nonrated, reinforced concrete. There is a fire-rated Class B door to area 2102. See area 2101 for penetrations.

FIRE PROTECTION This zone is equipped with smoke detectors which alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. There is no automatic suppression; however, a CO2 portable fire extinguisher and an H2O hose station are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible material consisting primarily of IEEE-383 qualified, fire retardant cable and transformer oil. There is no barrier between this zone and adjacent zone 2101J which creates a fire propagation possibility to that zone. Due to the large dilution volume of area 2101, significant dilution of combustion products would occur.

Therefore, flashover is not postulated to occur and propagation to adjacent zones is unlikely. In addition, propagation to zone 2101J is acceptable since all redundant safe shutdown circuits and components throughout area 2101 have been protected as appropriate. Propagation to adjacent area 0101 is not considered credible as is discussed in the texts for areas 2101 and 0101. The smoke detection system provides both local and MCR alarms which ensures sufficient early warning for prompt response by the plant fire brigade. The available firefighting equipment in this zone is adequate to extinguish the design basis fire.

HNP-FHA-12 12.2-28 REV 33 3/15 FIRE AREA 2102 This area is not considered safety related.

DESCRIPTION Southwest Stairwell Unit 2 Turbine Building - All elevations

DRAWING NUMBER(S) H-11820, H-11821, H-11822, H-11823

AREA 159 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-B,C/2 (See text) - Floors, Ceiling or Roof Concrete

- Fixed Openings SD/0101 - Penetrations See text

- Doors (Fire-rated Class/Zone No.) 3-B/2101; B/0101

HNP-FHA-12 12.2-29 REV 33 3/15 CONSTRUCTION On all elevations the walls are block and 2-h rated with the exception of the 164-ft elevation where the walls are concrete. The floors are nonrated, reinforced concrete. The ceiling is nonrated, reinforced concrete with a smoke damper at the 164-ft elevation. There is a fire-rated Class B door to each of zones 2101C, 2101J, 2101N, and area 0101.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION There are no automatic suppression or detection systems in this area. There are, however, hose stations and CO2 portable fire extinguishers in adjacent areas 2101 and 0101 on all elevations which can be easily accessed for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The negligible fire loading and substantial, rated construction preclude the propagation of the design basis fire beyond the boundaries of this area. The available firefighting equipment in adjacent zones and areas is adequate to extinguish a fire. Since this area contains no safe shutdown components or circuits, the design basis fire will not affect the ability to achieve safe shutdown. There are no radioactive materials in this area which could be released in the event of a fire.

HNP-FHA-12 12.2-30 REV 33 3/15 FIRE AREA 2103 This area is not considered safety related.

DESCRIPTION Southeast Stairway Unit 2 Turbine Building - All elevations

DRAWING NUMBER(S) H-11820, H-11821, H-11822, H-11823

AREA 159 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-B,C/2 (See text) - Floors, Ceiling or Roof Concrete

- Fixed Openings SD/0101 - Penetrations See text

- Doors (Fire-rated Class/Zone No.) 2-B/2101; B/0101,2104

HNP-FHA-12 12.2-31 REV 33 3/15 CONSTRUCTION The south and east walls are block and are 2-h rated. The west wall is 2-h-rated, reinforced concrete. The north wall is all block with the exception of the 147-ft elevation, where it is reinforced concrete. All are 2-h rated. The floors are nonrated, reinforced concrete. The ceiling is nonrated, reinforced concrete with a smoke damper at the 164-ft elevation. Zone 2101H, zone 2101M, zone 0101J, and area 2104 each have a fire-rated Class B door to this zone.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION There are no automatic detection or suppression systems in this area. CO2 extinguishers are available in adjacent zones 2101H, 2101J, and 0101J. A hose station is available in zone 2101M and fire areas 2104 and 0101.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains an insignificant loading of combustible materials. The negligible fire loading and substantial, rated construction preclude the propagation of the design basis fire beyond the boundaries of this area. The available firefighting equipment in adjacent zones and areas is adequate to extinguish a fire. Since this area contains no safe shutdown components or circuits, the design basis fire will not affect the ability to achieve safe shutdown. There are no radioactive materials in this area which could be released in the event of a fire.

HNP-FHA-12 12.2-32 REV 33 3/15 FIRE AREA 2104 This area is considered safety related.

DESCRIPTION East Cableway Turbine Building - el 130 ft

DRAWING NUMBER(S) H-11814, H-11821

AREA 3510 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 234,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC); Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Dry pilot (PC); Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-B/3; S-B/2,Open;E-C/NR; W-C/3,NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OP/2101 - Penetrations See text

- Doors (Fire-rated Class/Zone No.) A/0014,1105,2203; B/2103; NR/2101

HNP-FHA-12 12.2-33 REV 33 3/15 CONSTRUCTION The east wall is nonrated, reinforced concrete and is adjacent to the 3-h-rated reactor and radwaste building walls. The north portion of the west wall (from T12 to T14) is reinforced concrete and is 3-h rated. The balance of the west wall is nonrated, reinforced concrete (see exemptions). The north wall is block and 3-h rated. The south wall is partially 2-h-rated block (adjacent to the stairwell) and the rest is open to zone 2101 (see exemptions). The floor and ceiling are reinforced concrete and nonrated except for the ceiling under area 0024, which is 3-h rated (see exemptions). There is a fire-rated Class B door to area 2103. There is a fire-rated Class A door to each of areas 2203, 1104, and 0014. There is a nonrated doorway in the west wall to area 2101 and an open stairway down to area 0007 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full coverage wet pipe sprinklers and full coverage smoke detectors which alarm both locally and in the MCR. The reactor feed pump oil conditioner located in this area is equipped with a water spray system actuated by the dry pilot portion of the system.

hose stations and portable CO2 fire extinguishers are located in this area for manual firefighting.

APPENDIX R EXEMPTIONS An exemption from Section III.G.2 requirement for complete 3-h-rated fire barriers has been granted for the nonrated walls, floor and ceiling, the opening to area 2101, and the open stairwell to area 0007 per the April 1984 NRC SER.

An additional exemption has been requested from the barrier requirements of Section III.G.2, for specific HPCI system circuits routed through this area, as is documented in appendix C of this document. This exemption was withdrawn, as is documented in appendix C of this document.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this area will primarily involve cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified, which ensures that the design basis fire will develop and propagate through the area slowly, allowing ample time for response by the plant fire brigade. The reactor feed pump oil conditioner in this area is surrounded by a curb to contain any oil spills or leaks in the immediate vicinity of the conditioner. The conditioner is equipped with a dry pilot actuated water spray system, specifically designed to extinguish this type of fire. The combination of rated and exempted fire barriers surrounding this area, the automatic sprinkler coverage and the available manual firefighting equipment, preclude propagation of the fire to adjacent areas. A fire in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.3-1 REV 28 11/10 FIRE AREA 2201 This area is considered safety related.

DESCRIPTION Unit 2 Drywell and Torus Unit 2 Reactor Building

DRAWING NUMBER(S) H-11832, H-11833, H-11834, H-11835, H-11836

AREA 3,339 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 50,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls S, C/NR - Floors, Ceiling or Roof Steel - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) NR/2203F, 2205F

HNP-FHA-12 12.3-2 REV 28 11/10 CONSTRUCTION The boundaries of this area are nonrated, reinforced concrete and steel exempted barriers. The torus and downcomers are steel, approximately 1 in. thick. All penetrations and doors to adjacent areas are nonrated and airtight.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is not equipped with any detection or suppression system. However, the drywell is inerted during power operation, thereby preventing fires from being ignited or sustained. A hose stream can be provided to all parts of this area using the hose stations located in areas 2205 and 2203 during nonpower operation.

APPENDIX R EXEMPTIONS The drywell vessel and shield walls comprise a portion of the boundary between the north and south halves of the reactor building. This boundary, including the drywell walls, has been exempted from the Section III.G.2 requirement for complete, 3-h-rated barriers per the April 1984 NRC Safety Evaluation Report (SER).

CONSEQUENCES OF DESIGN BASIS FIRE During power operation, the drywell is inerted and a fire is not credible. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown. Per Appendix R to 10 CFR 50.48, no further protection is required. During periods when the drywell is not inerted a fire will not propagate to other fire areas due to the substantial construction and the low combustible loading. In the event of a fire during an outage, the high traffic in the drywell will ensure prompt detection of a fire in its early stages. Existing drywell temperature instruments may also be used for drywell fire detection. Fire detection by either means is expected to result in prompt response by the plant fire brigade. The available manual firefighting equipment in the adjacent areas is adequate to extinguish the fire.

The primary combustibles in this area are concentrated in four specific locations; in each of the two recirculation pumps and each of two cable penetration sections. Curbs are provided under each recirculation pump to contain any oil spills to the localized area of the pump, thereby preventing propagation of a pump lube oil fire throughout the area. The two cable penetration sections are on opposite sides of the area. Each section contains cables of predominantly one safe shutdown path. This separation provides assurance that damage to only one safe shutdown path will result from a fire in this area and that a fire originating in one cable penetration section will not propagate to the other. Similarly, any radioactive materials contained in the area will be confined to the area in the event of a fire.

HNP-FHA-12 12.3-3 REV 28 11/10 FIRE AREA 2203 This area is considered safety related.

DESCRIPTION Reactor Building North Unit 2 Reactor Building - All Elevations

DRAWING NUMBER(S) H-11832, H-11833, H-11834, H-11835, H-11836, H-11837

AREA 19,806 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil Cable Cable insulation Class A Wood, clothing, trash, paper Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Halon; wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det; smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E, N-C/NR; S-C/3, NR, open; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OD, OP, OH/2205; MH, CH/2201; SD/Outside - Penetrations See text - Doors (Fire-rated Class/Zone #) 5-A/2205; 2-A/1203, 2210, 2211; A/2104, 0201; NR/Outside, 2205, 2604

HNP-FHA-12 12.3-4 REV 28 11/10 CONSTRUCTION Below 130-ft Elevation The west wall of this area below the 130-ft elevation is a 3-h-rated reinforced concrete wall separating the reactor building from the turbine and control buildings. The north and east boundaries are reinforced concrete below grade reactor building exterior walls and are nonrated. The north wall is adjacent to the 3-h-rated Unit 1 reactor building exterior wall. The south boundary is defined by the nonrated concrete drywell in the center and is open to area 2205 on the east and west sides of the drywell. The floor and ceiling are nonrated, reinforced concrete. The northeast (zone 2203B) and northwest (zone 2203C) corners communicate with the 130-ft elevation floor via open stairwells. A hatch is provided in the floor at the 130-ft elevation for access to the general floor on this elevation, and there is a steam vent opening in the ceiling communicating with area 2205 (see exemptions). Area 2201 (drywell and torus) is separated from area 2203 on this elevation by the nonrated but substantial torus vessel and downcomer walls, which are constructed of approximately 1-in.-thick steel.

130-ft Elevation The west wall of this area is a 3-h-rated, reinforced concrete, exterior wall. The north and east walls are nonrated, reinforced concrete reactor building exterior walls. The north wall is adjacent to the 3-h-rated Unit 1 reactor building exterior wall.

The south boundary is defined by the nonrated drywell in the center and the main steam chase on the west and is open to area 2205 on the east. A fire-rated Class A door is provided in the west wall to area 2104. There are two nonrated doors; one large, railroad vault door accesses the outside and the other accesses area 2604. There is a nonrated door in the southwest wall accessing zone 2205H. Stairs in the northwest corner of this area provide access to zone 2203C below and zone 2203I above this elevation. Stairs in the northeast corner provide access to zone 2203B below this elevation.

158-ft Elevation The west wall is reinforced concrete and 3-h rated. This boundary extends along column line RA from column line R14 to R15 and then along column line RB from R15 to R21. The east wall is nonrated, reinforced concrete exterior wall. The northwest corner walls (around the stairwell) are reinforced concrete, 3-h rated adjacent to areas 2205 and 2210 and nonrated adjacent to 3-h-rated Unit 1 reactor building wall. The south area boundary consists of the 3-h-rated concrete south wall of the stairwell, the nonrated reinforced concrete shield wall adjacent to the phase separators (zone 2205M), the concrete and steel drywell wall, the RWCU pump room wall, and the open corridor on the east side to area 2205. The floor and ceiling are nonrated, reinforced concrete. The ceiling of this area is the boundary between areas 1203 and 1205. It is provided with full wet pipe suppression system coverage on el 185 ft from column lines R14 to R19 (except for the drywell, fuel pool, and zone 2205W). There are two fire-rated Class A doors, one in the south wall and one in the north wall, which access the chiller room (zone 2205N) and the Unit 1 reactor building (area 1203), respectively. An open doorway in the southeast boundary accesses the RWCU pump room (area 2205). There is a stairwell in the northwest corner of the area which accesses the 130-ft

HNP-FHA-12 12.3-5 REV 28 11/10 CONSTRUCTION (cont'd) 158-ft Elevation (cont'd) and 185-ft elevations of this area. In addition, there is an open equipment hatch which accesses the 130-ft elevation below and area 2205 on the 185-ft elevation above. The hatch is equipped with a high density fixed water spray suppression system around its perimeter on the 185-ft elevation.

185-ft Elevation and Above (Stairwell)

The east, west, and south walls are 3-h-rated reinforced concrete walls, except the west and west half of the south walls at the 228-ft elevation which are nonrated exterior walls. The north wall is a nonrated, reinforced concrete wall at all elevations, but is adjacent to the 3-h-rated Unit 1 reactor building wall. At the 185-ft elevation there are three fire-rated Class A doors; a double door in the south wall and a door in the east wall, both providing access to area 2205, and a door in the north wall to area 1203. At the 203-ft elevation there are two fire-rated Class A double doors; one in the east wall and one in the south wall, both to area 2205. At el 228 ft, there is a fire-rated Class A door in the south wall providing access to the airlock to the reactor building roof. The room at the top of the stairwell above el 228 ft contains openings to area 0201 (see exemptions).

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with wet pipe sprinkler systems which are designed to function as a propagation barrier to separate the north half of the reactor building (area 2203) from the south half (area 2205). These systems are described and defined in section 3.4 of this document.

These wet pipe systems are located in the east and west torus room on el 87 ft, in the east corridor on el 130 ft, on the north side of the main steam chase on el 130 ft, and in the east corridor on el 158 ft. The system to the north of the main steam chase on elevation 130 ft deviates from the description by not having all safe shutdown cables within the section of floor covered by the system protected.

The hatchway penetrating the 158-ft elevation ceiling is equipped with a high density, fixed water spray suppression system around the hatch on the 185-ft elevation. In addition, the north half of the building on the 185-ft elevation, with the exception of the drywell, fuel pool, and zone 2205W, is covered with a wet pipe suppression system. The combination of sprinkler systems is designed to preclude propagation of a fire either up or down through the floor or hatch.

An additional wet pipe system is provided in the RCIC pump room. Linear thermal detectors are provided in the reactor building centerline suppression system sections on el 87 ft. Linear thermal detectors are also provided in the RHR pump room on el 87 ft and the CRD area north of the main steam chase on el 130 ft. Smoke detectors are provided in the reactor building centerline suppression system section on the east side of el 130 ft, near the equipment hatches at el 130 ft, and in the east reactor building centerline suppression system section on

HNP-FHA-12 12.3-6 REV 28 11/10 FIRE PROTECTION (cont'd) el 158 ft. Activation of the detection or suppression systems results in an alarm, both locally and in the MCR. There are hose stations and portable CO2 fire extinguishers located throughout the area.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements of Appendix R has been approved for the nonrated shield walls and open areas separating this area from the south half of the reactor building and for the lack of areawide suppression coverage, per the April 1984 NRC Safety Evaluation Report (SER).

An exemption from Section III.G.2 requirements has been approved for certain safe shutdown equipment located under the reactor building centerline suppression systems per the January 1987 NRC SER.

An exemption from the Section III.G.2 requirements for fire barriers has been requested as is documented in appendix C of this document, for the openings from this area to area 0201 at the top of the stairwell. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The north half of the Unit 2 reactor building primarily contains components and cables for safe shutdown path 1 and the south half primarily contains components and cables for safe shutdown path 2. Path 2 systems that are required for safe shutdown and are located in the north half and path 1 systems that are located in the south half of the reactor building and are required for safe shutdown are protected by a 1-h-rated fire barrier. All safe shutdown circuits in the reactor building centerline suppression system sections are protected by a 1-h-rated fire barrier.

The fire detection systems provide reasonable assurance that a fire will be detected in its initial stages before significant damage occurs. The fire will then be suppressed by the automatic systems or manually by the plant fire brigade before it represents a serious threat to safe shutdown systems. The fire suppression systems, fire barriers, the large open areas of the reactor building, and the existing spatial separation between redundant paths provide assurance that one path will remain free of fire damage.

Therefore, a fire in the north half of the Unit 2 reactor building will not affect the capability to achieve safe shutdown or result in the release of significant radioactivity.

HNP-FHA-12 12.3-7 REV 28 11/10 FIRE ZONE 2203A This zone is considered safety related.

DESCRIPTION Reactor Building North Unit 2 Reactor Building - Below the 130-ft elevation

DRAWING NUMBER(S) H-11832

AREA 6,427 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E, N-C/NR; S-C, S/NR, open: W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205; CH/2203F; M/2203F - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-8 REV 28 11/10 CONSTRUCTION The south portion of the west wall is reinforced concrete and is 3-h rated. The east, north, northeast, and northwest walls are all reinforced concrete and are nonrated. A portion of the south boundary of the zone is the drywell which is reinforced concrete and steel and is nonrated. The southeast and southwest boundaries of the zone are open to zone 2205A. The floor and ceiling are nonrated, reinforced concrete. There is an open hatch in the ceiling which accesses zone 2203F and a steam vent opening to zone 2205H. Area 2201, the drywell and torus, is separated from area 2203 in this zone by the nonrated steel torus vessel walls. See area 2203 for penetrations.

FIRE PROTECTION The southeast and southwest portions of the zone approximately 20 ft north of column line R19 are provided with linear heat detection and a wet pipe suppression system. In addition, the zone is equipped with hose stations and a portable CO2 fire extinguisher for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The reactor building centerline suppression system sprinklers are designed to prevent fire propagation through the open areas along column line R19 to area 2205. The low combustible loading and substantial wall construction preclude the potential propagation of a design basis fire to other adjacent zones. Activation of a suppression or detection system results in an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is sufficient to extinguish a fire.

HNP-FHA-12 12.3-9 REV 28 11/10 FIRE ZONE 2203B This zone is considered safety related.

DESCRIPTION Reactor Building Northeast Corner Room Unit 2 Reactor Building - el 87 ft

DRAWING NUMBER(S) H-11832

AREA 659 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 117,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, SW, E-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/2203F - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-10 REV 28 11/10 CONSTRUCTION The north, east, and southwest walls are nonrated, reinforced concrete. The north wall is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall. The floor and ceiling are also nonrated, reinforced concrete. There is one open stairwell in the northeast corner which accesses zone 2203F. There are several concrete equipment hatches in the ceiling which access zone 2203F. See area 2203 for penetrations.

FIRE PROTECTION The zone is equipped with a full coverage linear heat detection system which provides an alarm both locally and in the MCR. There is no automatic suppression system provided in this zone. The zone is equipped with a hose station and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire, wall construction is substantial, containing a limited number of penetrations; this will preclude fire propagation to adjacent zones and areas. The open stairwell represents a potential threat of fire propagation to zone 2203F above; however, the linear heat detection system in this zone will detect the fire and provide an early alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade to prevent propagation of the fire to zone 2203F. The manual firefighting equipment in this zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-11 REV 28 11/10 FIRE ZONE 2203C This zone is considered safety related.

DESCRIPTION Northwest Corner Room Unit 2 Reactor Building - Below el 130 ft

DRAWING NUMBER(S) H-11832

AREA 659 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, clothing Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls SE, N-C/NR: W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/2203F - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-12 REV 28 11/10 CONSTRUCTION The southeast and north wall are reinforced concrete and are nonrated. The north wall is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall. The west wall is reinforced concrete and is 3-h rated. The floor and ceiling are nonrated, reinforced concrete.

There is an open stairwell and a concrete equipment hatch which access zone 2203F above.

See area 2203 for penetrations.

FIRE PROTECTION The zone is equipped with an automatic wet pipe suppression system. No detection is provided; however, activation of the suppression system will result in an alarm both locally and in the MCR. There are hose stations and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains low loading of combustible materials. The low fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone, except potentially through the open stairwell to zone 2203F. This is not expected to occur since there are no intervening combustibles in the vicinity of the stairwell opening in zone 2203F.

Activation of the wet pipe sprinklers in this zone will provide an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish the fire. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-13 REV 28 11/10 FIRE ZONE 2203F This zone is considered safety related.

DESCRIPTION Working Floor North Unit 2 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11833

AREA 7,438 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 144,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC); (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC); Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E, N-C/NR; S-C/NR, open; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205; CH, OS/2203B,C; MH, CH/2201; OH/2203K; OS/2203I; M/2203A - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) A/2104; NR/2205, 2604, Outside

HNP-FHA-12 12.3-14 REV 28 11/10 CONSTRUCTION The north and east walls are nonrated, reinforced concrete. The west wall is 3-h-rated reinforced concrete. The south boundary is defined by the nonrated drywell in the center, the nonrated main steam pipe chase shield wall on the west side, and by the opening on the east side (along column line R19) to area 2205. A fire-rated Class A door is provided in the west wall, which accesses area 2104. Nonrated doors in the east wall access area 2604 and the outside. In addition, there is a nonrated door in the southwest wall accessing zone 2205H. The floor and ceiling are nonrated, reinforced concrete. There are two open stairwells which access zones 2203B and 2203C below and 2203I above. The south wall has several closed hatches which access area 2201 (Drywell). The northeast portion of the ceiling in this zone has an open equipment hatch which accesses zone 2203K above. Closed equipment hatches are provided in the floor which access zone 2203A, zone 2203B, and zone 2203C. A manway to the torus room (zone 2203A) is provided in the northwest portion of the floor. See area 2203 for penetrations.

FIRE PROTECTION The zone is equipped with smoke detectors east of column line RH and linear heat detection west of column line RH. The southeast and southwest portions of this zone along column line R19 are equipped with automatic wet pipe suppression systems designed as a fire propagation barrier. In addition, hose stations and portable CO2 fire extinguishers are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this zone is expected to be slow developing, consisting primarily of cable insulation and Class A materials. The automatic reactor building centerline suppression system would prevent fire propagation to adjacent zones 2205H and 2205F. Based on a moderate combustible loading, limited penetrations, and substantial wall construction, lateral fire propagation to adjacent zones is not considered probable. The open equipment hatch and open stairwells create a potential propagation threat to zones 2203A, 2203B below, and zones 2203I and 2203K above. Early detection of the slowly developing fire provided by the installed detection systems and prompt action by the plant fire brigade make the propagation beyond this zone unlikely. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-15 REV 28 11/10 FIRE ZONE 2203I This zone is not considered safety related.

DESCRIPTION Stair Vestibule Unit 2 Reactor Building - el 158 ft, 185 ft, 203 ft, 228 ft

DRAWING NUMBER(S) H-11834, H-11835, H-11836, H-11837

AREA 897 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; E, S, W-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings OS/2203F; OD/2203K; SD/Outside - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) 5-A/2205; 2-A/1203; A/0201

HNP-FHA-12 12.3-16 REV 28 11/10 CONSTRUCTION 158-ft Elevation The north wall is reinforced concrete and nonrated and is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall. The east, south, and west walls are reinforced concrete and are 3-h fire barriers. The north wall has a fire-rated Class A door which accesses area 1203.

The south wall has a fire-rated Class A double door which accesses area 2205. There is an open doorway in the east wall which accesses zone 2203K. The floor and ceiling are nonrated, reinforced concrete. The base of the stairwell accesses zone 2203F below.

185-ft Elevation The east, west, and south walls are reinforced concrete and are 3-h rated. The north wall is nonrated, reinforced concrete and is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall. The north and east walls each have a fire-rated Class A door which access areas 1203 and 2205, respectively. The south wall has a fire-rated Class A double door accessing area 2205. The ceiling and floor are nonrated, reinforced concrete.

203-ft Elevation The north wall is nonrated, reinforced concrete and is adjacent to the 3-h-rated Unit 1 reactor building wall. The east, west, and south walls are reinforced concrete, 3-h fire barriers with fire-rated Class A double doors in the east and south walls which access area 2205. The floor and ceiling are nonrated, reinforced concrete.

228-ft Elevation The northwest and west half of the south walls are nonrated, reinforced concrete exterior walls.

The east portion of the south wall adjacent to the airlock and the east wall are 3-h rated. A fire-rated Class A door in the south wall accesses the airlock to the reactor building roof and refueling floor. The floor and ceiling are reinforced concrete. There are two small rooms above this elevation which are separated from the rest of the stairwell by a nonrated floor with a metal hatch. There are openings from these rooms to area 0201 (see exemptions for area 2203).

See area 2203 for penetrations.

FIRE PROTECTION The zone is not equipped with a detection or automatic suppression system. CO2 fire extinguishers and a hose station are provided for manual firefighting.

HNP-FHA-12 12.3-17 REV 28 11/10 CONSEQUENCES OF DESIGN BASIS FIRE This zone has no fixed combustibles, therefore, the only credible fire would be due to the presence of transient combustibles. The negligible combustion loading and substantial wall construction with limited penetrations would preclude the potential for fire propagation beyond this zone.

HNP-FHA-12 12.3-18 REV 28 11/10 FIRE ZONE 2203K This zone is considered safety related.

DESCRIPTION Working Floor North Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 3,726 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls S-C/NR, Open; E-C/NR, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205I; OH/2203F, 2205S; OD/2205L, 2203I - Penetrations See area 2203 text - Doors (Fire-rated Class/Zone #) 2-A/2210, 2211

HNP-FHA-12 12.3-19 REV 28 11/10 CONSTRUCTION The east wall is a nonrated, reinforced concrete exterior wall. The west wall is a 3-h-rated, reinforced concrete wall. The south wall of this zone is an exempted barrier (see area 2203) consisting of the concrete shield walls adjacent to the cleanup phase separator and the RWCU recirculation pumps, the drywell wall, and the open passageway to zone 2205I. The floor and ceiling are nonrated, reinforced concrete. An open doorway accesses zone 2205L. In the northeast portion of this zone there is an open equipment hatch to zones 2205S above and 2203F below. The ceiling of this zone serves as the area boundary between area 2203 and 2205. To ensure that propagation of a fire through this boundary does not occur, the majority of the 185-ft elevation north floor is covered by a wet pipe suppression system and the hatch is equipped with closely spaced, fixed water spray heads around its perimeter.

FIRE PROTECTION A wet pipe sprinkler system designed as a fire propagation barrier is provided over the majority of the east portion of this zone. Smoke detection is also provided in this reactor building centerline suppression system section. Manual firefighting equipment consists of a hose station and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire in this zone, the open passageways and hatches create a fire propagation hazard to adjacent areas and zones. The water curtain in the southeast section of this zone is specifically designed to prevent this propagation. Similarly, the sprinkler coverage and directional spray nozzles around the open hatch on the 185-ft elevation are designed to prevent propagation through the hatch. The remainder of the zone boundaries are rated or exempted fire barriers. Smoke and heat from a fire in this zone are expected to actuate the detection system in the southeast part of the zone to ensure prompt response by the plant fire brigade. The substantial or rated construction, the installed suppression systems, the likelihood of early detection, and the low combustible loading preclude propagation of the design basis fire beyond the boundaries of this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.3-20 REV 28 11/10 FIRE AREA 2205 This area is considered safety related.

DESCRIPTION Unit 2 Reactor Building South Unit 2 Reactor Building - All elevations

DRAWING NUMBER(S) H-11832, H-11833, H-11834, H-11835, H-11836, H-11837

AREA 54,816 ft2

COMBUSTIBLES Oil & Grease Grease, lube oil Cable Cable insulation Class A Trash, clothing, paper, wood, tape (cloth), rags Charcoal Charcoal Plastics Plastic, ladders, respirators, PVC Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray; Wet pipe; Preaction (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det; Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C, S/3, NR, Open; S-C/3, NR; E-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings CH, SD/0201; OH, OD, OP/2203 - Penetrations See text - Doors (Fire-rated Class/Zone no.) 5-A/2203; A/2301; NR/2203, 0201

HNP-FHA-12 12.3-21 REV 28 11/10 CONSTRUCTION Below el 130 ft The south and west walls of this area consist of 3-h-rated, reinforced concrete, reactor building exterior walls separating this area from the radwaste building and turbine building, respectively.

The central part of the north boundary (enclosing the drywell) is nonrated, reinforced concrete and steel; the remaining part of the north boundary is open to area 2203. The east wall is a nonrated, reinforced concrete, reactor building exterior wall. Access from the el 130-ft working floor to the southeast and southwest corner rooms is provided through open stairways. Access to the main floor at this elevation is by a small hatch on the south side of the 130-ft elevation floor. The floor is nonrated, reinforced concrete slab. The ceiling is nonrated, reinforced concrete. The drywell and torus (area 2201) are separated from this area by the steel torus vessel.

Elevation 130 ft The west wall and west portion of the south wall are 3-h-rated, reinforced concrete, reactor building exterior walls. The east wall and the remainder of the south wall are nonrated, reinforced concrete exterior walls. The north boundary is open to area 2203 on the east side, accessible through the labyrinth entries and a nonrated door of the main steam chase on the west side, and defined by the drywell and personnel access area walls in the center. There is one fire-rated Class A door in the south wall accessing area 2301. There are open stairwells and covered equipment hatches accessing the upper and lower elevations of this area. The floor and ceiling of the main steam chase portion of this elevation contain steam vents to both the upper and lower elevations of this area and to area 2203 (see exemptions). The floor and ceiling are nonrated, reinforced concrete.

Elevation 158 ft The west wall, the section of wall along column line RB from approximately column line R16 to column line R21, and the west portion of the south wall are 3-h-rated reinforced concrete. The east wall and remainder of the south wall are nonrated, reinforced concrete exterior walls. The north boundary is 3-h-rated reinforced concrete around zone 2203I and open to area 2203 on the east side of this elevation. The remainder of the north boundary consists of the nonrated, reinforced concrete, drywell, RWCU phase separator room and RWCU pump room north shield walls. The floor and ceiling are nonrated, reinforced concrete. There is an open stairwell and several covered equipment hatches that access the upper and lower elevations of this area.

Steam blowout panels located in the west wall are designed to vent steam from a main steam piping rupture to the turbine building (area 0101). There is a fire-rated Class A door in the north wall to area 2203.

HNP-FHA-12 12.3-22 REV 28 11/10 CONSTRUCTION (cont'd) 185-ft, 203-ft, and 228-ft Elevations This section consists of the entire reactor building floor on el 185 ft and 203 ft with the exception of the drywell (area 2201), the refueling and storage pools (area 0201), and the stairwell (zone 2203I). The refueling floor access stairwell enclosure is the only portion of the 228-ft elevation included in this area. All walls are nonrated, reinforced concrete with the exception of the west wall and the walls enclosing the stairwell (area 2203), which are both 3-h-rated, reinforced concrete. The floors and ceilings are reinforced, nonrated concrete. The floors contain open stairwells and equipment hatches to the lower elevations of this area and area 2203. The ceiling is the refueling floor. It contains a stairwell opening, enclosed in a block "dog-house",

with a nonrated access door to area 0201. The ceiling also contains several covered and sealed equipment hatches. See area 0201 for an evaluation of this area boundary. There are two fire-rated Class A doors provided to zone 2203I on each of the 185-ft and 203-ft elevations.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with wet pipe sprinklers designed as a fire propagation barrier to separate the north half of the reactor building (area 2203) from the south half (area 2205). These systems are described and defined in section 3.4 of this document. These wet pipe systems are located on the east and west sides of the torus room at el 87 ft, on the east side of the drywell and the north side of the main steam chase at el 130 ft, on the east side of the drywell at el 158 ft, and the entire north half of the building at el 185 ft with the exception of zones 2205T and 2205W. A high density, fixed water spray suppression system is provided around the equipment hatch at the 185-ft elevation. The combination of suppression systems on el 185 ft is designed to prevent propagation of a fire either up or down through the floor or hatch.

Additional suppression systems include; a wet pipe system in zone 2205Z, a preaction system in zone 2205N, and individual water spray systems for the charcoal filters in zones 2205N, 2205Q, 2205T, and 1205V. Linear thermal heat detectors are provided in the reactor building centerline suppression system sections on el 87 ft in zone 2205B and in zones 2205F and 2205H on the 130-ft elevation. Smoke detectors are provided in the southeast corner of the 130-ft elevation (in the vicinity of the stairwell and hatches), in the reactor building centerline suppression system section of the 130-ft elevation, throughout zone 2205N, and in the reactor building centerline suppression system section on the 158-ft elevation. Thermal detectors are provided for the water spray systems in all filters containing charcoal. Activation of any of the detection or suppression systems results in both local and MCR alarms. The area is equipped with hose stations and portable CO2 fire extinguishers for manual firefighting.

HNP-FHA-12 12.3-23 REV 28 11/10 APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirements has been approved for the nonrated walls, openings and open areas separating this area from the north half of the reactor building for the nonrated steam blowout panel between this area and area 0101 and for the lack of full area suppression coverage per the April 1984 NRC SER.

Requests for exemptions from the Section III.G.2 requirement for complete 3-h-rated barriers have been submitted as is documented in appendix C of this document for the nonrated refueling floor and refueling floor access stairwell doghouses. However, per the January 1987 NRC SER, no exemption is required based on part 4 of NRC Generic Letter 86-10.

In addition, exemptions from the Section III.G.2 separation requirements have been approved for certain safe shutdown components located under the reactor building centerline suppression systems and for HPCI system components located in this area, per the January 1987 NRC SER.

CONSEQUENCES OF DESIGN BASIS FIRE The north half of the Unit 2 reactor building primarily contains components and cables for safe shutdown path 1 and the south half primarily contains components and cables for safe shutdown path 2. Path 2 systems that are located in the north half and path 1 systems that are located in the south half of the reactor building and are required for safe shutdown are protected by a 1-h fire-rated barrier.

All safe shutdown circuits required for safe shutdown for both paths are protected by a 1-h fire-rated barrier in the reactor building centerline suppression system sections.

The fire detection systems provide reasonable assurance that a fire will be detected in its initial stages before significant damage occurs. The fire will then be suppressed by the automatic systems or manually by the plant fire brigade before it represents a serious threat to shutdown systems. The fire suppression systems, fire barriers, the large open areas of the reactor building, and the existing spatial separation between redundant safe shutdown paths provide assurance that one path will remain free of fire damage.

HNP-FHA-12 12.3-24 REV 28 11/10 FIRE ZONE 2205A This zone is considered safety related.

DESCRIPTION Reactor Building South Unit 2 Reactor Building - Below el 130

DRAWING NUMBER(S) H-11832

AREA 6427 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C, S/NR, open; S-C/3; E-C/NR; W-C/3; SE/SW-C/NR

- Floors, Ceiling or Roof Concrete - Fixed Openings OP/2203;M, CH/2205F - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-25 REV 28 11/10 CONSTRUCTION The north wall is nonrated, reinforced concrete and steel drywell. The north boundary of the zone is open to zone 2203A on the east and west sides of the drywell along column line R19.

The entire northern perimeter of this zone constitutes an exempted boundary (see area 2205).

The south and west walls are reinforced concrete and are 3-h rated. The east, southeast, and southwest walls are nonrated, reinforced concrete. The ceiling and floor are nonrated, reinforced concrete. The ceiling has several concrete and metal hatchways to zone 2205F and a steam vent opening to zone 2205H. Area 2201 (drywell and torus) is separated from area 2205 in this zone by the nonrated steel torus vessel and downcomer walls. See area 2205 for penetrations.

FIRE PROTECTION This zone is equipped with partial coverage linear heat detection and wet pipe sprinklers.

Reactor building centerline suppression systems are provided from the northern zone boundary at column line R19, extending approximately 20 ft south of column line R19 in the northeast and northwest quadrants of this zone. The zone is provided with hose stations and a portable CO2 fire extinguisher for manual firefighting. Activation of a detection or suppression system results in an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade.

CONSEQUENCES OF DESIGN BASIS FIRE The suppression systems in this zone are designed to prevent fire propagation through the open sections along column line R19 to area 2203. Activation of the detection or suppression systems provides an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The installed suppression and detection systems along with the low fire loading and substantial wall construction preclude propagation of the design basis fire beyond the boundaries of this zone.

HNP-FHA-12 12.3-26 REV 28 11/10 FIRE ZONE 2205B This zone is considered safety related.

DESCRIPTION Southeast Corner Room Unit 2 Reactor Building - Elevation below 130 ft

DRAWING NUMBER(S) H-11832

AREA 659 ft2

COMBUSTIBLES Oil & Grease Grease Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls E, S, NW-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/2205F - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) W/2205Z

HNP-FHA-12 12.3-27 REV 28 11/10 CONSTRUCTION The northwest, east, and south walls are nonrated, reinforced concrete. The ceiling and floor area are also nonrated, reinforced concrete. There are several concrete covered equipment hatchways and an open stairwell which provide access to zone 2205F above. A nonrated, watertight door in the southeast corner provides access to zone 2205Z. See area 2205 for penetrations.

FIRE PROTECTION The zone is equipped with full coverage linear heat detection which provides an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The zone is not equipped with an automatic fire suppression system; however, a hose station and portable CO2 extinguishers are provided for manual firefighting. Additional hose stations are available in zone 2205F.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of design basis fire, the substantial construction of the walls, containing a limited number of open penetrations, precludes fire propagation to adjacent zones and areas. The open stairwell represents a potential threat of fire propagation to zone 2205F above; however, the primary combustible in this zone is cable which is predominately IEEE-383 qualified which ensures a slow developing fire. This, coupled with an early warning provided by the full coverage linear heat detection system, would ensure prompt response by the plant fire brigade to extinguish the fire by utilizing the available manual firefighting equipment in the zone. The nonrated, watertight door which accesses zone 2205Z also poses some threat as a potential propagation path, however, due to the low combustible loading and the likelihood of early detection and suppression of a fire, it is unlikely that propagation would occur. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-12 12.3-28 REV 28 11/10 FIRE ZONE 2205C This zone is considered safety related.

DESCRIPTION Southwest Corner Room Unit 2 Reactor Building - Below el 130 ft

DRAWING NUMBER(S) H-11832

AREA 659 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 72,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls NE-C/NR; W, S-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/2205F - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-29 REV 28 11/10 CONSTRUCTION The west and south walls are reinforced concrete and are 3-h rated. The northeast wall is nonrated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete. There is an open stairwell and a concrete hatch which provide access to zone 2205F. See area 2205 for penetrations.

FIRE PROTECTION The zone is not provided with any detection or automatic suppression system. However, the zone is equipped with hose stations and portable CO2 fire extinguishers for manual firefighting. An additional hose station is available in zone 2205F.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading and substantial construction preclude the propagation of a design basis fire beyond the boundaries of the zone, except potentially through the open stairwell. However, the low fire loading and large dilution volume of zone 2205F above this zone minimize this possibility. Detection of a fire in this zone would likely result from the linear thermal detection in the vicinity of the stairwell in zone 2205F, further reducing the probability of propagation. The available firefighting equipment is adequate to extinguish a fire. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown or result in the release of any radioactivity.

HNP-FHA-12 12.3-30 REV 28 11/10 FIRE ZONE 2205F This zone is considered safety related.

DESCRIPTION Working Floor South Unit 2 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11833

AREA 7,379 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 111,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Lin therm det; smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR, open; S-C/3, NR; E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OS, CH/2205B, C; CH, M/2205A; OP, 2203; OS/2205I

- Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2301; NR/2205H

HNP-FHA-12 12.3-31 REV 28 11/10 CONSTRUCTION The east and south walls are reinforced concrete and nonrated with the exception of the south wall from approximately column line RA to approximately RH which is 3-h rated. The west wall is reinforced concrete and is 3-h rated. The north boundary consists of the nonrated, reinforced concrete shield walls of the main steam chase and drywell and an open passage on the east side to zone 2203F. The floor is nonrated concrete with two open stairwells which provide access to zones 2205B and 2205C. In addition, there are several concrete covered equipment hatches which provide access to zone 2205A, zone 2205B, and zone 2205C below. The ceiling is nonrated, reinforced concrete with one open stairwell to zone 2205I. There is one fire-rated Class A door in the southwest corner of the zone accessing area 2301. In addition, there is one nonrated door accessing zone 2205H. See area 2205 for penetrations.

FIRE PROTECTION Detection is provided by smoke detectors east of column line RH (except in the piping penetration room) and by linear heat detection west of column line RH in this zone. The opening to area 2203 is equipped with a reactor building centerline suppression system extending into this zone approximately 35 ft south of column line R19. In addition, hose stations and portable CO2 fire extinguishers are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE A design basis fire in this zone is expected to be slow developing, consisting primarily of IEEE-383 qualified cable insulation and Class A materials. The automatic reactor building centerline suppression system would prevent fire propagation to adjacent area 2203. Based on a low combustible loading, limited penetrations, and substantial wall construction, the boundaries of this zone are adequate to contain a fire. The open equipment hatch and open stairwells create a potential propagation threat to zones 2205A, 2205B, and 2205C below and zone 2205I above; however, the design basis fire is slow developing and the full coverage detection system would ensure prompt response by the plant fire brigade to prevent fire propagation by utilizing the available manual firefighting equipment in the zone. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-32 REV 28 11/10 FIRE ZONE 2205H This zone is considered safety related.

DRAWING NUMBER(S) H-11833, H-11834

DESCRIPTION Main Steam Chase Unit 2 Reactor Building - 130-ft Elevation

AREA 1,279 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Lin therm det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls S, N-C/NR; E-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2203A, 2205A - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) NR/2203F, 2205F

HNP-FHA-12 12.3-33 REV 28 11/10 CONSTRUCTION The north and south walls are nonrated, reinforced concrete shield walls. The east wall is the drywell which is nonrated concrete and steel. The west wall is 3-h-rated, reinforced concrete.

The ceiling and floor are nonrated, reinforced concrete. The floor contains steam vent openings to zones 2203A and 2205A below this zone. The west wall contains steam blowout panels which vent to area 0101 (turbine building) (see exemptions in area 2205). There are two nonrated doors which access zones 2203F and 2205F. See area 2205 for penetrations.

FIRE PROTECTION The linear heat detection systems in adjacent zones 2203F and 2205F extend into the labyrinth entries to this zone. Similarly, the suppression system in zone 2203F extends into the north entry of this zone. No manual firefighting equipment is provided in this zone; however, there are hose stations and portable extinguishers available in the adjacent zones.

CONSEQUENCES OF DESIGN BASIS FIRE This zone has a negligible combustible loading and the zone is a high radiation area which limits the introduction of transient combustibles. The low fire loading and substantial construction preclude the propagation of a design basis fire beyond the boundaries of this zone.

In addition, the suppression system to the north of the zone will further reduce the probability of fire propagation to zone 2203F. The available firefighting equipment in adjacent zones 2203F and 2205F is adequate to extinguish a fire.

HNP-FHA-12 12.3-34 REV 28 11/10 FIRE ZONE 2205I This zone is considered safety related.

DESCRIPTION Working Floor South Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 3,669 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic, respirators, ladders Miscellaneous Rubber Miscellaneous Gases Hydrogen

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR, open; S-C/3, NR; E-C/NR; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/2205L; OS/2205F, R; OP/2203 - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-35 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete with the exception of a portion of the south wall from column line RB to approximately column line RH, which is 3-h rated. The east portion of the north boundary along column line R19 is open to area 2203. There are two open doorways which access zone 2205L. The ceiling and floor are nonrated, reinforced concrete. There are two open stairwells along the east wall accessing zones 2205F below and zone 2205R above.

The shield wall for the RWCU heat exchangers (zone 2205L) is provided with a removable block section for equipment removal. See area 2205 zone for penetrations.

FIRE PROTECTION The zone is equipped with partial coverage of smoke detectors and wet pipe sprinklers designed as a fire propagation barrier in the opening between this zone and area 2203 between column line R19 and approximately column line R23. Actuation of either the detection or suppression system results in both local and MCR alarms, which ensures prompt response by the plant fire brigade. In addition, the zone is equipped with hose stations and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of design basis fire, early detection may not occur unless the fire initially developed in the northeast quadrant, which is equipped with smoke detectors. The automatic reactor building centerline suppression system would prevent the only potential fire propagation into area 2203. The open stairwells accessing zone 2205F and zone 2205R and the open doorways to zone 2205L represent propagation threats. However, a fire is expected to be slow developing, consisting primarily of cable insulation. Due to the low combustible loading and substantial wall construction with limited penetrations, a fire would not be expected to propagate beyond this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-36 REV 28 11/10 FIRE ZONE 2205L This zone is not considered safety related.

DESCRIPTION Reactor Water Cleanup (RWCU) Heat Exchanger Room Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 1,870 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 27,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; W, S-C/NR; E-C, B/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/2203K, 2205I, 2205M - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-37 REV 28 11/10 CONSTRUCTION The south, west, and east walls are nonrated and are constructed of reinforced concrete except for the removable block shielding on the east wall around the RWCU heat exchangers. The north wall is nonrated, reinforced concrete and steel drywell. The extreme northeast corner of this zone, containing the RWCU pumps, is separated from the balance of the zone by a partial height reinforced concrete shield wall approximately 15 ft high which provides an effective heat shield to prevent propagation within this zone. The ceiling and floor are nonrated, reinforced concrete. There are open doorways which access adjacent zone 2205I, zone 2205M, and area 2203.

FIRE PROTECTION This zone contains no detection, automatic suppression, or manual firefighting equipment; however, manual firefighting equipment consisting of hose stations and portable CO2 fire extinguishers is available in adjacent zone 2205I and adjacent area 2203.

CONSEQUENCES OF DESIGN BASIS FIRE Early detection of a fire in this zone is improbable; however, a fire in this zone is unlikely due to the negligible combustible loading. Propagation of a fire will not occur through the openings to zones 2203K and 2205I since the sprinkler systems in zones 2203K and 2205I are expected to actuate to prevent propagation. The substantial construction with limited penetrations precludes fire propagation beyond the boundaries of this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-38 REV 28 11/10 FIRE ZONE 2205M This zone is not considered safety related.

DESCRIPTION Cleanup Phase Separator Room Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 499 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E, W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OD/2205L - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-39 REV 28 11/10 CONSTRUCTION The north, south, east, and west walls of the zone are nonrated, reinforced concrete. Access to the zone is via an open doorway from zone 2205L in the east wall. Credit is taken for the substantial concrete construction of the north wall to provide separation of the north and south halves of the reactor building per an approved Appendix R exemption (see area 2205 text). The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION The zone contains no automatic fire suppression, detection, or manual firefighting equipment.

In the unlikely event of a fire in this zone, there is manual firefighting equipment consisting of portable CO2 fire extinguishers and hose stations in zone 2205I, which can be accessed through adjacent zone 2205L. A hose stream can be provided to this zone using multiple lengths of fire hose.

CONSEQUENCES OF DESIGN BASIS FIRE The only fire postulated for this zone would involve controlled amounts of transient combustibles. In the unlikely event of a significant fire due to the introduction of transient combustibles, the open doorway in the east wall creates a fire propagation hazard to adjacent zone 2205L. However, due to the lack of fixed combustibles, the absence of any intervening combustibles in the adjacent zone, and the extremely substantial construction of the balance of the zone boundaries, propagation of a fire outside of this zone is precluded.

HNP-FHA-12 12.3-40 REV 28 11/10 FIRE ZONE 2205N This zone is considered safety related.

DESCRIPTION Chiller Room Unit 2 Reactor Building

DRAWING NUMBER(S) H-11834

AREA 4,204 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Wood, tape (cloth), rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 108,000 Btu/ft2 Fire Duration Less than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Preaction (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers None Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,W, S-C/3; E-C/3, NR, C/NR around 2205H - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2203

HNP-FHA-12 12.3-41 REV 28 11/10 CONSTRUCTION All the walls with the exception of the east wall south of column line R21 and the west wall around zone 2205H are reinforced concrete and are 3-h rated. There is a fire-rated Class A double door in the north wall to area 2203. The floor and ceiling are nonrated, reinforced concrete. The main steam line passage, a part of fire zone 2205H, is located on the west side of this zone enclosed by nonrated concrete walls. See area 2205 for penetrations.

FIRE PROTECTION The zone is equipped with a preaction sprinkler suppression system activated by smoke detectors which provide an early warning alarm both locally and in the MCR. In addition, a hose station is provided in this zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The smoke detectors in this zone provide an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. The preaction suppression system is sufficient to extinguish the fire; however, if this system were to fail, the available manual firefighting equipment is adequate to extinguish the fire. Due to the low combustible loading and substantial or rated construction of the zone boundaries, the fire is not expected to propagate outside of the zone. In the unlikely event that propagation occurs, only other zones of area 2205 will be affected and no adverse impact on the ability to achieve safe shutdown will result.

HNP-FHA-12 12.3-42 REV 28 11/10 FIRE ZONE 2205Q This zone is considered safety related.

DESCRIPTION Standby Gas Filter Room Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835

AREA 1,636 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics PVC, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N, E, S-C/NR; W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205R - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) 2-NR/2205T

HNP-FHA-12 12.3-43 REV 28 11/10 CONSTRUCTION The north, east, and south walls are nonrated, reinforced concrete. The east wall contains an opening to adjacent zone 2205R. The west wall is reinforced concrete and is 3-h rated. The floor and ceiling are nonrated, reinforced concrete. There are two nonrated double doors to zone 2205T. See area 2205 for penetrations.

FIRE PROTECTION This zone is equipped with heat detectors and manually activated fixed water spray suppression systems in the standby gas filters. No manual firefighting equipment is provided for this zone. However, a portable CO2 fire extinguisher is available in adjacent zone 2205T and multiple hose lengths using the hose station in zone 2203I provide an effective hose stream. Activation of the detection system provides alarms, both locally and in the MCR to ensure prompt response by the plant fire brigade.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire is postulated to be slow developing, consisting primarily of charcoal and IEEE-383 cable insulation. The charcoal is concentrated in the HVAC filters which are equipped with heat detection and manually activated suppression systems; therefore, fire propagation is unlikely. In the event of a design basis fire in the zone, the detection system in the filters would provide early warning alarms in the local area and in the MCR to assure prompt response by the plant fire brigade. The fire brigade will initiate the water spray system in the filter unit to suppress the fire. Low combustible loading, the installed detection, and substantial construction preclude fire propagation beyond the boundaries of this zone.

HNP-FHA-12 12.3-44 REV 28 11/10 FIRE ZONE 2205R This zone is not considered safety related.

DESCRIPTION Working Floor South RB-185 Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835

AREA 5,915 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, trash, clothing Charcoal None Plastics Plastic, respirators, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 49,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR, Open; E, W, S-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205Q, S, U; OS/2205I, Y - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-45 REV 28 11/10 CONSTRUCTION The east, west, and south walls are reinforced concrete and are nonrated. The west wall contains an opening to zone 2205Q. The north end of this zone is partially bounded by the drywell (nonrated steel and concrete, exempted barrier) and is open on the east and west side along column line R19 to zones 2205S and 2205U. The floor and ceiling are nonrated, reinforced concrete. There is one open stairwell which accesses zones 2205I below and 2205Y above. See area 2205 for penetrations.

FIRE PROTECTION The zone is not equipped with any detection or suppression systems; however, the north boundary borders the wet pipe sprinkler coverage for the north reactor building. The zone is provided with hose stations and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire is postulated to be a slow developing fire consisting primarily of fire retardant, IEEE-383 qualified cable insulation and Class A materials. Propagation of the fire to adjacent zones 2205S and 2205U is precluded by the wet pipe suppression system in these zones. The substantial construction with limited penetrations and the low combustible loading make it unlikely for a fire to propagate to any other adjacent zones. The only potential propagation path through the floor or ceiling is the open stairwell. Due to the low fire loading, this is credible but unlikely. The manual firefighting equipment in the zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.3-46 REV 28 11/10 FIRE ZONE 2205S This zone is not considered safety related.

DESCRIPTION Working Floor North Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835

AREA 3,292 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E-C/NR; S-Open; W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205R; OH/2203, 2205Y; OD/2205W - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.3-47 REV 28 11/10 CONSTRUCTION The north and east walls are reinforced concrete and are nonrated. The north wall is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall. The south boundary of this zone along column line R19 is open to zone 2205R. The west wall is nonrated, reinforced concrete and steel fuel pool and drywell walls. There is a large equipment hatch which accesses zones 2205K below and 2205Y above. The west wall has an open doorway which accesses zone 2205W. The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION The zone is equipped with full coverage wet pipe sprinklers designed as part of the reactor building centerline suppression system. The portion of the zone around the hatch is equipped with a high density ring of fixed spray heads. The combination of suppression is intended to prevent propagation of a fire, either up or down, through the floor or hatch. No early warning fire detection system is provided in this zone. Activation of the suppression system provides an alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. In addition, a hose station and a portable CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE In the event of a design basis fire, actuation of the suppression systems in the zone will result in both local and MCR alarms to ensure prompt response by the plant fire brigade. The construction is substantial and the expected fire severity is sufficiently low to preclude fire propagation to adjacent zones 2505W and 2205R. The open equipment hatch and open hallway pose some threat of propagation to area 2203 and zone 2205Y and to zone 2205R, respectively. Propagation to zone 2205R or 2205Y is acceptable since both zones rely on path 1 for safe shutdown. However, the installed full coverage suppression system is expected to rapidly extinguish any fire which might occur. The automatic high density suppression system around the equipment hatch is designed to preclude propagation of a design basis fire through the hatch in either direction. Propagation is therefore not expected to occur. The manual firefighting equipment provided in this zone is adequate to extinguish any fire which may occur.

HNP-FHA-12 12.3-48 REV 28 11/10 FIRE ZONE 2205T This zone is considered safety related.

DESCRIPTION Heating and Ventilation Room Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835

AREA 2,082 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Trash Charcoal Charcoal Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers CO2 Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls W, N-C/3; E, S-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2203I; 2-NR/2205Q

HNP-FHA-12 12.3-49 REV 28 11/10 CONSTRUCTION The north and west walls are reinforced concrete and are 3-h rated. The east and south walls are nonrated, reinforced concrete. There is a fire-rated Class A double door in the north wall accessing area 2203. The south wall is provided with two nonrated double doors accessing zone 2205Q. The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION The zone is equipped with a heat detection system in the filter unit, which alarms both locally and in the MCR to ensure prompt response by the plant fire brigade. In addition, a portable CO2 fire extinguisher is provided for manual firefighting. A hose station is available in adjacent area 2203.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire is postulated to be a slow developing fire consisting primarily of charcoal and cable insulation. The charcoal is concentrated in the reactor building vent filter which is equipped with heat detection and water spray systems. In the event of a design basis fire in the zone, the detection system in the filters would provide early warning alarms in the local area and in the MCR to assure prompt response by the plant fire brigade. The fire brigade will initiate the water spray system in the filter unit to suppress the fire. The water spray systems are specifically designed for extinguishing this type of fire. In the event the water spray system fails, prompt response by the plant fire brigade utilizing the manual firefighting equipment available could extinguish or contain a fire in this zone. The installed detection and suppression systems, the substantial wall construction with limited penetrations, and the low combustible loading preclude fire propagation outside this zone.

HNP-FHA-12 12.3-50 REV 28 11/10 FIRE ZONE 2205U This zone is considered to be safety related.

DESCRIPTION Northwest Corridor Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835

AREA 534 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; S-open; E-C/NR; W-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings OP/2205R - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2203

HNP-FHA-12 12.3-51 REV 28 11/10 CONSTRUCTION The north, east, and west walls are nonrated, reinforced concrete with the exception of the portion of the west wall north of column line R15, which is 3-h rated. The north wall is adjacent to the Unit 1 reactor building 3-h-rated, reinforced concrete wall and the east wall consists of the drywell and fuel pool walls which are substantial nonrated, reinforced concrete and steel. The south end of this zone is open to zone 2205R. The ceiling and floor are nonrated, reinforced concrete. There is one fire-rated Class A door in the west wall to area 2203. See area 2205 for penetrations.

FIRE PROTECTION The zone contains no fire detection system, but is equipped with full coverage automatic wet pipe suppression designed as a part of the reactor building centerline suppression system.

Actuation of the suppression system provides both local and MCR alarms. A portable CO2 fire extinguisher is provided in this zone and a hose station is available in adjacent area 2203 for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire is postulated to be slow developing, consisting primarily of IEEE-383 qualified cable insulation. The open south end of the zone to zone 2205R presents the greatest threat of fire propagation; however, the low combustible loading and lack of intervening combustibles in this zone significantly reduce the hazard of fire propagation. Actuation of the suppression system in this zone will provide both local and MCR alarms, which ensure prompt response by the plant fire brigade. The substantial wall construction with limited penetrations and the reactor building centerline suppression system are capable of suppressing or containing a fire within the zone. Propagation of a fire to adjacent zones in this area will not affect the capability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.3-52 REV 28 11/10 FIRE ZONE 2205V This zone is considered safety related.

DESCRIPTION Exhaust Filter and Demineralizer Room Unit 2 Reactor Building - el 203 ft

DRAWING NUMBER(S) H-11836

AREA 4,418 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics Ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls S, E-C/NR; N, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2203

HNP-FHA-12 12.3-53 REV 28 11/10 CONSTRUCTION The east and south walls are nonrated, reinforced concrete. The west and north walls are reinforced concrete and are 3-h rated. There is a fire-rated Class A door in the north wall accessing area 2203. The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION Heat detection and an automatic water spray suppression system are provided for each filter unit in the zone. Activation of the detection system results in an alarm, both locally and in the MCR. In addition, a hose station is provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The majority of the combustibles in this zone are concentrated in the filters (charcoal). In the event of a design basis fire in the zone, the detection system in the filters would provide early warning alarms to assure prompt response by the plant fire brigade. The fire brigade will initiate the water spray system in the filter unit to suppress the fire. The filter water spray systems are expected to rapidly extinguish the fire and prevent propagation outside of the filter units. The low fire loading, likelihood of early detection, available automatic suppression, and the lack of intervening combustibles preclude propagation of the fire to adjacent areas or zones.

HNP-FHA-12 12.3-54 REV 28 11/10 FIRE ZONE 2205W This zone is considered safety related.

DESCRIPTION Area North of Spent Fuel Pit Unit 2 Reactor Building - el 185 ft

DRAWING NUMBER(S) H-11835, H-11836

AREA 630 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E-C/NR; S, W-C/NR - Floors, Ceiling, or Roof Concrete - Fixed Openings OD/2205S - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-12 12.3-55 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. The north wall is adjacent to the Unit 1 reactor building 3-h-rated wall and the south and west walls consist of fuel pool exterior walls substantially constructed of concrete and steel. The east wall has a open doorway accessing zone 2205S. The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. However, a hose station and a portable CO2 fire extinguisher are available in zone 2205S for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading, substantial construction, and lack of intervening combustibles in the vicinity of the open doorway preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2205S is adequate to extinguish a fire which may result from the introduction of the transient combustibles to this zone.

HNP-FHA-12 12.3-56 REV 28 11/10 FIRE ZONE 2205X This zone is considered safety related.

DESCRIPTION Stack Monitoring Room Unit 2 Reactor Building - el 203 ft

DRAWING NUMBER(S) H-11836

AREA 1,017 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S-C/NR; E-C/NR; W-C/3, NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) A/2203

HNP-FHA-12 12.3-57 REV 28 11/10 CONSTRUCTION The north, east, and south walls are nonrated, reinforced concrete. The north wall is adjacent to the 3-h-rated Unit 1 reactor building wall and the east wall consists of the substantial concrete and steel fuel pool and drywell walls. The west wall is 3-h-rated, reinforced concrete adjacent to area 2203 and nonrated concrete elsewhere. The west wall has a fire-rated Class A double door accessing area 2203. The floor and ceiling are nonrated, reinforced concrete. See area 2205 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system; however, there is a hose station in this zone and a portable CO2 fire extinguisher is available in adjacent area 2203 for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustibles. The low fire loading and substantial construction of the concrete walls preclude the propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in this zone and in adjacent area 2203 is adequate to extinguish the fire.

HNP-FHA-12 12.3-58 REV 28 11/10 FIRE ZONE 2205Y This zone is considered safety related.

DESCRIPTION Working Floor Unit 2 Reactor Building - el 203 ft and 228 ft

DRAWING NUMBER(S) H-11836, H-11837

AREA 7,286 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, paper, clothing, trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 39,400 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, S, E-C/NR; W-C, S/NR, C/NR Walls around stairwell

- Floors, Ceiling or Roof Concrete - Fixed Openings OH/2205S; OS/2205R; CH, SD/0201 - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) NR/0201

HNP-FHA-12 12.3-59 REV 28 11/10 CONSTRUCTION All the zone walls are reinforced concrete and nonrated. The north wall is adjacent to the 3-h-rated Unit 1 reactor building wall. The west wall consists of the nonrated but substantially constructed dryer/separator pool, the drywell, and the refuel pool walls. The remaining walls are reactor building exterior walls. The floor is nonrated, reinforced concrete with an open stairwell down to zone 2205R. There is also an open hatch down to zone 2205S. The ceiling is nonrated, reinforced concrete with an open stairwell and a closed hatch up to area 0201. The ceiling consists of the refueling floor, a part of secondary containment which assures that all penetrations in the ceiling are closed and airtight sealed. See area 0201 for an evaluation of this area boundary. The stairwell is enclosed in a block "doghouse" on the 228-ft elevation with a nonrated door.

FIRE PROTECTION There are no detection or automatic suppression systems in this zone. Manual firefighting equipment consists of hose stations and portable CO2 fire extinguishers.

CONSEQUENCES OF DESIGN BASIS FIRE Due to extremely substantial construction of the zone boundaries, the only credible propagation paths for a design basis fire in this zone are through the open stairwell and hatches. All of the combustibles in this zone are concentrated toward the center of the zone, away from these potential propagation paths. Propagation up through the stairwell to area 0201 is not considered credible as discussed in the text for area 0201. Propagation down through the hatches and stairwells is unlikely due to the lack of intervening combustibles. In the event that propagation does occur through the hatch or stairwell in the north part of this zone, actuation of the hatch water spray system and/or general area wet pipe sprinklers on the 185-ft elevation is expected. Actuation of these suppression systems will provide both local and MCR alarms to ensure prompt response by the plant fire brigade. Propagation through these openings or the stairwell in the south part of the zone will affect only other zones of area 2205 which assures damage to only one safe shutdown path.

HNP-FHA-12 12.3-60 REV 28 11/10 FIRE ZONE 2205Z This zone is considered safety related.

DESCRIPTION HPCI Pump Room Unit 2 Reactor Building - Elevation below 130 ft

DRAWING NUMBER(S) H-11832

AREA 1,361 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N, E-C/NR; S, W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings CH/Outside - Penetrations See area 2205 text - Doors (Fire-rated Class/Zone #) W/2205B

HNP-FHA-12 12.3-61 REV 28 11/10 CONSTRUCTION The south and west walls are below grade, concrete reactor building exterior walls and are 3-h-rated fire barriers. The north and east walls are reinforced concrete and nonrated. The floor and ceiling are reinforced concrete and nonrated. There is one nonrated door in the north wall which accesses zone 2205B. A concrete hatch in the ceiling accesses the outside. See area 2205 for penetrations.

FIRE PROTECTION This zone is not equipped with any early warning fire detection system. A full coverage wet-pipe sprinkler suppression system is provided in this zone. Actuation of the suppression system results in an alarm both locally and in the main control room. In addition, a hose station and a portable CO2 fire extinguisher are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The only credible propagation of the design basis fire is through the north wall of this zone. This propagation is acceptable since only other zones of area 2205 would be damaged, thereby limiting fire damage to one safe shutdown path. In the event of a design basis fire, the substantial or rated wall construction coupled with the limited number of penetrations would limit the potential for fire propagation to adjacent areas or zones. The wet pipe sprinkler system is expected to activate during a fire, alarming both locally and in the MCR to ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to control a fire in the zone.

HNP-FHA-12 12.3-62 REV 28 11/10 FIRE AREA 2210 This area is considered safety related.

DESCRIPTION Recirculation ASD Room A Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 1,406 ft2

COMBUSTIBLES Cable Cable insulation Class A Paper Charcoal None Plastics PVC Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls E, N-C/NR; S - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text

HNP-FHA-12 12.3-63 REV 28 11/10 CONSTRUCTION The north and east walls are reinforced concrete and are nonrated. The north wall is adjacent to the 3-h-rated Unit 1 reactor building wall and the east wall is substantial Unit 2 reactor building exterior wall. The ceiling is 3-h-rated reinforced concrete. The floor is reinforced concrete and is nonrated.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION A full coverage wet pipe suppression system is provided in the area. Activation of the system results in an alarm both locally and in the MCR. The area contains no manual firefighting equipment. However, a hose station and portable CO2 fire extinguishers are available in adjacent area 2203.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The local and MCR alarms resulting from suppression system actuation will ensure prompt response by the plant fire brigade. In the event of a suppression system failure, the rated construction will preclude the possibility of fire propagation. The available manual firefighting equipment in adjacent area 2203 is adequate to extinguish the fire. A fire in this area will not affect the capability to achieve and maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.3-64 REV 28 11/10 FIRE AREA 2211 This area is considered safety related.

DESCRIPTION Recirculation ASD Room B Unit 2 Reactor Building - el 158 ft

DRAWING NUMBER(S) H-11834

AREA 1,684 ft2

COMBUSTIBLES Cable Cable insulation Class A Paper, trash Charcoal None Plastics PVC Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N-C/NR; W-C/3; E - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text

HNP-FHA-12 12.3-65 REV 28 11/10 CONSTRUCTION The north wall is reinforced concrete reactor building exterior and is nonrated, but is adjacent to the Unit 1 reactor building 3-h-rated wall. The ceiling is 3-h-rated, reinforced concrete. The floor is reinforced concrete and is nonrated.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION A full coverage wet pipe suppression system is provided in the area. Activation of the system results in an alarm both locally and in the MCR. The area contains no manual firefighting equipment. However, a hose station and portable CO2 fire extinguishers are available in adjacent area 2203.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The local and MCR alarms resulting from suppression system actuation will ensure prompt response by the plant fire brigade. In the event of a suppression system failure, the substantial or rated construction of the area boundaries precludes propagation of the fire. A fire in this area will not affect the capability to achieve and maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.4-1 REV 28 11/10 FIRE AREA 2301 This area is not considered safety related.

DESCRIPTION Unit 2 Radwaste Building Radwaste Building - All elevations

DRAWING NUMBER(S) H-11842, H-11843, H-11844

AREA 39,708 ft2

COMBUSTIBLES Oil & Grease Lube oil, gasoline Cable Cable insulation Class A Clothing, trash, paper, rags, wood, tape (cloth), pallets, plank, desks, plywood Charcoal Charcoal Plastics Plastic, ladders Miscellaneous Rubber, resin, solvent, EHC fluid Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe; Water spray (PC) (see section 7.0) Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det; Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3,S/NR @ 2301Z - Floors, Ceiling, or Roof Concrete

- Fixed Openings CH/Outside; OP/Outside - Penetrations See text

- Doors (Fire-rated Class/Zone no.) 2-A/0101;A/2101,2205;8-NR/Outside

HNP-FHA-12 12.4-2 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete with the exception of the west wall which is 3-h rated. The north wall is adjacent to the 3-h-rated reactor building wall. The floor and ceiling are nonrated, reinforced concrete. There are four fire-rated Class A doors; one communicates with each fire area 2205 and 2101, and two communicate with fire area 0101. There are nonrated doors to the outside including two double doors in the south wall, three nonrated steel hatch doors in the south wall, a vault door in the east wall at el 130 ft, a door to the radwaste building roof at el 148 ft, and a door to the roof at el 178 ft.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with smoke detection in the radwaste control room (RCR) which provides both local and main control room (MCR) alarms to ensure prompt response by the plant fire brigade. The exhaust filters are equipped with a heat detector actuated water spray suppression system. The dry waste storage area is covered with a wet pipe sprinkler system.

Manual firefighting equipment consists of hose stations and portable CO2 fire extinguishers throughout the area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area may propagate among zones of the area through the open and nonrated zone boundaries, particularly in the few places where local concentrations of combustibles are located near openings between zones. This propagation is acceptable within the area since no safe shutdown circuits or components are located in the area. The effects of a fire on the radwaste systems have been previously analyzed as described in the Unit 2 FSAR. No significant radioactive releases were determined to result from exposure of these systems to fire. All radwaste building exterior walls are approximately 2 ft thick. The design basis fire is not considered capable of breaching these area boundaries. In addition, all sections of this area that contain specific fire hazards (charcoal filters) or high concentrations of combustibles (dry waste storage area, RCR) are equipped with detection, suppression, or both. The combustible loading in many zones is negligible and is very low throughout the area. Although the internal walls are nonrated and contain openings between zones, they are of substantial, reinforced concrete construction. Actuation of any of the detection or suppression systems, expected to occur in the incipient stages of a fire, will provide both local and MCR alarms to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish any fire which might occur. Therefore, propagation of a fire among zones is considered unlikely; propagation outside of the area is not credible. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.4-3 REV 28 11/10 FIRE ZONE 2301A This zone is not considered safety related.

DESCRIPTION Condensate Sludge Mix Pump Room Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 5,444 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Clothing, trash Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 56,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR:W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301B,C,D,E,F,G,H,I;OH,OS/2301J - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) A/2101

HNP-FHA-12 12.4-4 REV 28 11/10 CONSTRUCTION The north, south and east walls are nonrated reinforced concrete. The west wall is a 3-h-rated, reinforced concrete wall separating this zone from the turbine building (area 2101). Open doorways in the north wall provide access to zones 2301B and 2301C. There are open doorways to zones 2301D, 2301I, and 2301H in the east wall and to zones 2301E, 2301F, and 2301G in the south wall. 11 fire-rated Class A door is provided in the west wall at the 112-ft elevation connecting this zone with the turbine building (area 2101). The floor and ceiling are reinforced concrete. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with detection or automatic suppression systems. However, hose stations and portable CO2 fire extinguishers are provided for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains low loading of combustible materials. The low fire loading and substantial construction makes propagation of the fire to adjacent zones unlikely. The available manual firefighting equipment in the zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-5 REV 28 11/10 FIRE ZONE 2301B This zone is not considered safety related.

DESCRIPTION Condensate Phase Separator Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 1,045 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-6 REV 28 11/10 CONSTRUCTION The west wall of this zone is a 3-h-rated, reinforced concrete. The north, east, and south walls are nonrated, reinforced concrete. The north wall is adjacent to the 3-h-rated Unit 2 reactor building wall. The floor and ceiling are nonrated, reinforced concrete. Open doorways in the south wall provide access to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or automatic suppression system. The zone is not provided with any manual firefighting equipment; however, hose stations and portable CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The negligible fire loading and the substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish the fire in this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-7 REV 28 11/10 FIRE ZONE 2301C This zone is not considered safety related.

DESCRIPTION Oil Skimmer Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 262 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Paper, rags Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

ESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A,2301D - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-8 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete. The north wall is adjacent to the Unit 2 reactor building 3-h-rated, reinforced concrete wall. The floor and ceiling are nonrated, reinforced concrete. This zone is accessed from zone 2301A through two open doorways in the south wall. There is an open doorway in the east wall to zone 2301D. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. However, hose stations and portable CO2 fire extinguishers are located in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The low fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-9 REV 28 11/10 FIRE ZONE 2301D This zone is not considered safety related.

DESCRIPTION Floor Drain and Chemical Waste Tank Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 1,088 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A,C - Penetrations See area 2301 text - Doors (Fire rated Class/Zone No.) None

HNP-FHA-12 12.4-10 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete. The north wall is adjacent to the Unit 2 reactor building 3-h-rated, reinforced concrete wall. The floor and ceiling are also nonrated, reinforced concrete. Two open doorways in the west wall access zone 2301A. There is an additional open doorway in the west wall to zone 2301C. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, hose stations and portable CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-11 REV 28 11/10 FIRE ZONE 2301E This zone is not considered safety related.

DESCRIPTION Decontamination Solution Concentration Pump Tank Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 600 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-12 REV 28 11/10 CONSTRUCTION The west wall is 3-h-rated, reinforced concrete. The other three walls are nonrated concrete.

The floor and ceiling are also nonrated, reinforced concrete. There is an open doorway in the north wall to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. Hose stations and portable CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish any fire which may result from the introduction of the transient combustibles to this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-13 REV 28 11/10 FIRE AREA/ZONE 2301F This zone is not considered safety related.

DESCRIPTION Chemical Waste Neutralizer Tank and Pump Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 700 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-14 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. An open doorway in the east wall provides access to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. Hose stations and portable CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish any fire which may result from the introduction of the transient combustibles to this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-15 REV 28 11/10 FIRE ZONE 2301G This zone is not considered safety related.

DESCRIPTION Spent Resin Pump and Tank Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 264 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-16 REV 28 11/10 CONSTRUCTION All zones walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. An open doorway in the north wall provides access to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, hose stations and portable CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish any fire which may result from the introduction of the transient combustibles to this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-17 REV 28 11/10 FIRE ZONE 2301H This zone is not considered safety related.

DESCRIPTION Waste Sludge Phase Separator Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 809 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-18 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. The floor and ceiling of this zone are also nonrated, reinforced concrete. An open doorway in the west wall provides access to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, hose stations and CO2 fire extinguishers are provided in adjacent zone 2301A for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The negligible fire loading and substantial construction preclude the propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301A is adequate to extinguish any fire in this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-19 REV 28 11/10 FIRE ZONE 2301I This zone is not considered safety related.

DESCRIPTION Waste and Surge Tank Room Unit 2 Radwaste Building - el 103 ft

DRAWING NUMBER(S) H-11842

AREA 3,506 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Clothing, trash Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 51,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301A - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-20 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. An open doorway in the west wall provides access to zone 2301A. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with an automatic detection or suppression system. However, a hose station and portable CO2 fire extinguishers are located within the zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading and substantial construction makes propagation of this fire to adjacent zones unlikely. The available manual firefighting equipment in the zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-21 REV 28 11/10 FIRE ZONE 2301J This zone is not considered safety related.

DESCRIPTION Dry Waste Storage Area Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 3,884 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Wood, paper, clothing, tape (cloth), trash, rags Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Wet pipe (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S-C/NR;W-C/3,NR;E-B,C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301L,M,N;OS,OH/2301A;OS/2301R - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) A/2205;2-NR/2301K;NR/2301P;NR/Outside; NR/2301L

HNP-FHA-12 12.4-22 REV 28 11/10 CONSTRUCTION The west wall of this zone is 3-h-rated, reinforced concrete except for the nonrated, reinforced concrete walls around zones 2301P and 2301Q. The remaining three walls are nonrated, reinforced concrete. A fire-rated Class A door in the north wall provides access to area 2205 and two nonrated double doors also in the north wall provide access to zone 2301K. A nonrated door in the west wall connects this zone with zone 2301P. A nonrated double door in the south wall provides access to the outside. The east wall has a nonrated door to zone 2301L and open doorways to zones 2301M and 2301N. The floor and ceiling are nonrated, reinforced concrete. There is an open equipment hatch in the west central part of the floor and a stairwell in the north part of the zone provides access to zones 2301A below and 2301R above. See area 2301 for penetrations.

FIRE PROTECTION The west central part of this zone over the drywaste storage section, is equipped with a wet pipe suppression system. The rest of the zone has no detection or automatic suppression coverage. This zone is provided with an H2O hose station and portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The drywaste storage section of this zone contains the bulk of the combustibles in the zone. A fire originating in this section is expected to be rapidly extinguished by the installed wet pipe sprinkler system. In addition, alarms resulting from actuation of the suppression system over the drywaste storage section ensure early fire detection and prompt response by the plant fire brigade. The open stairwells and doorways represent a fire propagation possibility to adjacent zones; however the low combustible loading and the likelihood of early fire detection preclude fire propagation. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-23 REV 28 11/10 FIRE ZONE 2301K This zone is not considered safety related.

DESCRIPTION HVAC Room Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 2,723 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal Charcoal Plastics Plastic, ladders Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0)

Hose Stations H2O Portable Extinguishers None Detectors (type) Heat det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) 2-NR/2301J

HNP-FHA-12 12.4-24 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete. The north wall is adjacent to the 3-h-rated Unit 2 reactor building wall. The floor and ceiling are also nonrated, reinforced concrete. There are two nonrated double doors in the south wall providing access to zone 2301J. See area 2301 for penetrations.

FIRE PROTECTION The filters in the zone are internally equipped with heat detection and water spray systems.

This zone is also equipped with a hose station and adjacent zone 2301J contains portable CO2 fire extinguishers for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading and substantial construction preclude the propagation of the design basis fire beyond the boundaries of this zone. The primary combustible in the zone is the charcoal, contained in the filters. The water spray suppression system is expected to rapidly extinguish any fire which occurs in the filters. Actuation of the detection system will result in both local and MCR alarms, which will ensure prompt response by the plant fire brigade. The fire brigade will initiate the water spray system in the filter unit to suppress the fire. Firefighting equipment in this zone and in adjacent zone 2301J are adequate to extinguish the fire.

HNP-FHA-12 12.4-25 REV 28 11/10 FIRE ZONE 2301L This zone is not considered safety related.

DESCRIPTION Solidification Area Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 1,964 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Pallets, clothing, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber, resin Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Moderate Max. Permissible Loading 292,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301J - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) 2-NR/Outside;NR/2301M;NR/2301J

HNP-FHA-12 12.4-26 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. The west wall has a nonrated door to zone 2301J and a nonrated door to zone 2301M. A nonrated vault-type door in the east wall provides access to the outside. A nonrated double door in the south wall allows access to the loading area outside the radwaste building. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any automatic suppression or detection system. However, the zone is provided with a portable CO2 fire extinguisher for manual firefighting. In addition, hose stations are available in nearby zones 2301J and 2301K.

CONSEQUENCES OF DESIGN BASIS FIRE The moderate fire loading and substantial construction minimizes the possibility of propagation of the design basis fire beyond the boundaries of this zone. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-27 REV 28 11/10 FIRE ZONE 2301M This zone is not considered safety related.

DESCRIPTION Conveyer Room Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 1,319 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Trash Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 54,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C,B/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OD/2301J - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) 3-NR/Outside;NR/2301L

HNP-FHA-12 12.4-28 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door in the east wall to zone 2301L. There are two open doorways in the south wall to zone 2301J and three nonrated, heavy steel hatch doors to the outside. The north wall of this zone is provided with a periscope window to monitor activities in the conveyor room. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. A hose station and portable CO2 fire extinguishers are available in adjacent zone 2301J for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE The low fire loading and substantial construction make it unlikely that a fire will propagate outside the zone. If a fire does occur propagation may occur through the open doorways to zone 2301J. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown. Manual firefighting equipment provided in adjacent zone 2301J is adequate to suppress the fire.

HNP-FHA-12 12.4-29 REV 28 11/10 FIRE ZONE 2301N This zone is not considered safety related.

DESCRIPTION Floor Drain and Waste Collector Filter Holding Pump Area Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 881 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Trash Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 79,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/Outside;OD/2301J - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-30 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. The roof contains concrete covered hatches over the holding tanks. There is an open doorway in the north wall to zone 2301J. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression systems. A hose station and portable CO2 fire extinguishers are available in adjacent zone 2301J.

CONSEQUENCES OF DESIGN BASIS FIRE The low fire loading and substantial construction minimize the possibility of propagation of the design basis fire beyond the boundaries of the zone. The manual firefighting equipment available in adjacent zone 2301J is adequate to suppress the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-31 REV 28 11/10 FIRE ZONE 2301P This zone is not considered safety related.

DESCRIPTION Steam Generator Room Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11843

AREA 648 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Clothing, trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301J

HNP-FHA-12 12.4-32 REV 28 11/10 CONSTRUCTION The west wall of this zone is a 3-h-rated, reinforced concrete. The other three walls are nonrated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete. There is a nonrated door in the east wall to zone 2301J. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. A hose station and portable CO2 fire extinguishers are provided in adjacent zone 2301J.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The low fire loading and substantial or rated construction preclude propagation of the design basis fire beyond the boundaries of this zone. The available manual firefighting equipment in adjacent zone 2301J is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-33 REV 28 11/10 FIRE ZONE 2301Q This zone is not considered safety related.

DESCRIPTION Decontamination Solution Concentrate Room Unit 2 Radwaste Building - el 132 ft, 148 ft, 158 ft

DRAWING NUMBER(S) H-11842, H-11843

AREA 362 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings CH/Outside - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) None

HNP-FHA-12 12.4-34 REV 28 11/10 CONSTRUCTION The west wall of this zone is a 3-h-rated, reinforced concrete wall extending from el 132 ft through 158 ft. The remaining walls are all nonrated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete. The roof contains concrete covered hatches over the concentrate tanks. This zone is completely enclosed, with no means of access except through the roof hatches. See area 2301 for penetrations.

FIRE PROTECTION Since this is a sealed zone with no means of normal access, containing no fixed combustibles, no fire protection features are provided for this zone.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a negligible loading of combustible material. The only fire postulated for this zone would involve transient combustibles. Since this zone is completely sealed with no normal access possible, the introduction of transient combustibles is not expected. In the unlikely event of any fire in this zone, the negligible fire loading and substantial or rated construction preclude propagation of a fire beyond the boundaries of this zone.

HNP-FHA-12 12.4-35 REV 28 11/10 FIRE ZONE 2301R This zone is not considered safety related.

DESCRIPTION Working Floor Radwaste Building - el 148 ft

DRAWING NUMBER(S) H-11842

AREA 6,096 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Ladders Miscellaneous Solvent, EHC fluid Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 34,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/2301J,U - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/Outside,2301S,T

HNP-FHA-12 12.4-36 REV 28 11/10 CONSTRUCTION All the walls except the west wall are nonrated, reinforced concrete. The west wall is a 3-h-rated, reinforced concrete wall. The floor and ceiling are nonrated, reinforced concrete. The east wall has three nonrated doors to zones 2301S, 2301T, and to the outside. An open stairway in the floor and ceiling provide access to zones 2301J below and 2301U above this zone, respectively. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or automatic suppression system. Hose stations and portable CO2 fire extinguishers are provided in this zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading, substantial or rated construction, and the minimal amount intervening combustibles in the vicinity of the stairwell and doors make propagation of the design basis fire to adjacent zones unlikely. The majority of the combustibles in the zone consist of cable which is predominately IEEE-383 qualified. The fire is therefore expected to develop slowly which will ensure adequate time for response by the plant fire brigade. The available manual firefighting equipment in this zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-37 REV 28 11/10 FIRE ZONE 2301S This zone is not considered safety related.

DESCRIPTION Hopper A Room Unit 2 Radwaste Building - el 148 ft

DRAWING NUMBER(S) H-11842

AREA 367 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301R

HNP-FHA-12 12.4-38 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, reinforced concrete with a nonrated door in the north wall to zone 2301R. The floor and ceiling are also nonrated, reinforced concrete. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, hose stations and portable CO2 fire extinguishers are available in adjacent zone 2301R.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude the propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301R is adequate to extinguish a fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-12 12.4-39 REV 28 11/10 FIRE ZONE 2301T This zone is not considered safety related.

DESCRIPTION Hopper B Room Radwaste Building - el 148 ft

DRAWING NUMBER(S) H-11842

AREA 250 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301R

HNP-FHA-12 12.4-40 REV 28 11/10 CONSTRUCTION All the walls are nonrated, reinforced concrete. The floor and ceiling are also nonrated, reinforced concrete. There is a nonrated door in the west wall to zone 2301R. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with any detection or suppression system. However, hose stations and portable CO2 fire extinguishers are available in adjacent zone 2301R.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude the propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in adjacent zone 2301R is adequate to extinguish a fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-12 12.4-41 REV 28 11/10 FIRE ZONE 2301U This zone is not considered safety related.

DESCRIPTION Working Floor Unit 2 Radwaste Building - el 164 ft

DRAWING NUMBER(S) H-11844

AREA 2,643 ft2

COMBUSTIBLES Oil & Grease Lube oil, gasoline Cable Cable insulation Class A Plank, clothing, tape (cloth), trash, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 45,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3,NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/2301R - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) A/0101;NR/2301V,W,X,Y

HNP-FHA-12 12.4-42 REV 28 11/10 CONSTRUCTION The west wall of this zone adjacent to the turbine building is 3-h-rated, reinforced concrete. The other walls are nonrated, reinforced concrete. The north wall is adjacent to the 3-h-rated, Unit 2 reactor building wall. The floor and ceiling are also nonrated, reinforced concrete. A fire-rated Class A door provides access to area 0101. Zone 2301U also communicates with zones 2301V, 2301Y, 2301X, and 2301W via nonrated doors provided in the south, west, and north walls. An open stairway in the floor provides access to zone 2301R. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. A hose station and portable CO2 fire extinguishers are provided in this zone for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains low loading of combustible materials. The low fire loading and substantial or rated construction makes propagation of the design basis fire beyond the boundaries of this zone unlikely. In addition, the presence of operational personnel in the radwaste control room at all times will result in early fire detection and ensure prompt response by the plant fire brigade. The manual firefighting equipment provided in this zone is adequate to extinguish the fire. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown.

HNP-FHA-12 12.4-43 REV 28 11/10 FIRE ZONE 2301V This zone is not considered safety related.

DESCRIPTION Unit 2 Radwaste Control Room Unit 2 Radwaste Building - el 164 ft

DRAWING NUMBER(S) H-11844

AREA 1429 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A Paper, trash, desks Charcoal None Plastics Plastic, ladders Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers Halon Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3 - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301U

HNP-FHA-12 12.4-44 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this zone are nonrated, reinforced concrete. The north wall is adjacent to the Unit 2 reactor building 3-h-rated wall. The west wall is 3-h-rated, reinforced concrete. The floor and ceiling are nonrated, reinforced concrete. A nonrated door in the south wall provides access to zone 2301U. See area 2301 for penetration.

FIRE PROTECTION This zone is equipped with full coverage smoke detectors which provide an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. A portable halon extinguisher is located in this zone. Portable CO2 fire extinguishers and a hose station are also available in adjacent zone 2301U.

CONSEQUENCES OF DESIGN BASIS FIRE The smoke detectors located in this zone are expected to detect the combustion products from an incipient fire and alert the local plant personnel as well as the MCR to ensure prompt response by the plant fire brigade. The likelihood of early detection, substantial or rated construction of the zone walls, and the low combustible loading in this zone preclude the propagation of a design basis fire beyond the boundaries of the zone.

HNP-FHA-12 12.4-45 REV 28 11/10 FIRE ZONE 2301W This zone is not considered safety related.

DESCRIPTION Centrifuge Room A Unit 2 Radwaste Building - el 164 ft

DRAWING NUMBER(S) H-11844

AREA 367 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 41000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301U

HNP-FHA-12 12.4-46 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. A nonrated door in the north wall provides access to zone 2301U. The floor and ceiling are also nonrated, reinforced concrete. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. However, a hose station and portable CO2 fire extinguishers are available in adjacent zone 2301U.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains low loading of combustible material. The low fire loading and substantial construction preclude the possibility of propagation of the design basis fire beyond the boundaries of this zone. Presence of operational personnel in the nearby radwaste control room at all times will likely result in early fire detection and ensure prompt response by the plant fire brigade to extinguish the fire. Manual firefighting equipment provided in adjacent zone 2301U is adequate to extinguish the fire.

HNP-FHA-12 12.4-47 REV 28 11/10 FIRE ZONE 2301X This zone is not considered safety related.

DESCRIPTION Centrifuge Room B Unit 2 Radwaste Building - el 164 ft

DRAWING NUMBER(S) H-11844

AREA 235 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Paper, rags Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 51,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete

- Fixed Openings None - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/2301U

HNP-FHA-12 12.4-48 REV 28 11/10 CONSTRUCTION All zone walls are nonrated, reinforced concrete. A nonrated door in the west wall provides access to zone 2301U. The floor and ceiling are also nonrated, reinforced concrete. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. However, a hose station and portable CO2 fire extinguishers are available in adjacent zone 2301U.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible material. The low fire loading and substantial construction preclude the possibility of propagation of the design basis fire beyond the boundaries of this zone. Presence of operational personnel in the nearby radwaste control room at all times will likely result in early fire detection and ensure prompt response by the plant fire brigade to extinguish the fire. Manual firefighting equipment provided in adjacent zone 2301U is adequate to extinguish the fire.

HNP-FHA-12 12.4-49 REV 28 11/10 FIRE ZONE 2301Y This zone is not considered safety related.

DESCRIPTION Chemical Treatment Area Unit 2 Radwaste Building - el 164

DRAWING NUMBER(S) H-11844

AREA 1,644 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Plank, plywood, paper, trash Charcoal None Plastics Plastic Miscellaneous Rubber, resin Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 39,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/NR;W-C/3,NR - Floors, Ceiling or Roof Concrete

- Fixed Openings OS/2301Z - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) A/0101;NR/2301U

HNP-FHA-12 12.4-50 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this zone are nonrated, reinforced concrete. The west wall is 3-h-rated, reinforced concrete. The floor and the ceiling are nonrated, reinforced concrete. A nonrated door in the north wall provides access to zone 2301U and a fire-rated Class A double door in the west wall provides access to area 0101. An open stairway in the southwest corner provides access to zone 2301Z. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or automatic suppression system. A hose station and portable CO2 fire extinguishers are available in adjacent zone 2301U.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains a low loading of combustible materials. The low fire loading and substantial or rated construction preclude the possibility of propagation of the design basis fire beyond the boundaries of this zone with the exception of zone 2301Z via the open stairway. The absence of fixed combustibles in zone 2301Z makes propagation unlikely. Propagation of a fire to other zones in this area, in the unlikely event that it does occur, will not affect the ability to achieve safe shutdown. The manual firefighting equipment provided in the adjacent zone is adequate to extinguish the fire.

HNP-FHA-12 12.4-51 REV 28 11/10 FIRE ZONE 2301Z This zone is not considered safety related.

DESCRIPTION Radwaste Building Supply Ventilation Room Unit 2 Radwaste Building - el 178 ft

DRAWING NUMBER(S) H-11842

AREA 1,178 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-S/NR - Floors, Ceiling or Roof Floor-concrete; ceiling-steel

- Fixed Openings OP/Outside;OS/2301Y - Penetrations See area 2301 text - Doors (Fire-rated Class/Zone No.) NR/Outside

HNP-FHA-12 12.4-52 REV 28 11/10 CONSTRUCTION All the walls of this zone are nonrated, steel walls. The floor is nonrated, reinforced concrete and the ceiling is nonrated steel. This zone communicates with zone 2301Y via an open stairway provided in the southwest corner and this zone accesses the outside through a ventilation opening and a nonrated door in the south wall. See area 2301 for penetrations.

FIRE PROTECTION This zone is not equipped with a detection or suppression system. A hose station and CO2 portable fire extinguishers are available in nearby zone 2301U for manual firefighting.

CONSEQUENCES OF DESIGN BASIS FIRE This zone contains an insignificant loading of combustible materials. The only fire postulated for this zone would involve controlled amounts of transient combustibles. The negligible fire loading and substantial construction preclude the propagation of the design basis fire beyond the boundaries of this zone. The available firefighting equipment in nearby zone 2301U is adequate to extinguish a fire which may result from the introduction of transient combustibles to this zone.

HNP-FHA-12 12.5-1 REV 28 11/10 FIRE AREA 2401 This area is considered safety related.

DESCRIPTION Day Tank Room 2A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 83 ft2

COMBUSTIBLES Oil & Grease Diesel fuel Cable None Class A Paper Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 1,814,000 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/0401

HNP-FHA-12 12.5-2 REV 28 11/10 CONSTRUCTION All area walls are reinforced concrete and 3-h rated. The floor and roof are nonrated reinforced concrete. A fire-rated Class A door in the east wall provides access to adjacent area 0401.

There are ventilation ducts with 3-h fire dampers in the east wall to adjacent area 0401. These dampers close automatically on high temperature or CO2 flooding system actuation or they may be manually closed.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage heat detectors to provide an early warning alarm both locally and in the main control room (MCR). In addition, an automatic CO2 flooding system is provided. There is no manual firefighting equipment in this area; however, portable CO2 and dry chemical fire extinguishers are easily accessible in adjacent areas 0401 and 2403. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area involving diesel fuel oil as a result of leakage or rupture of the day tank will be rapidly detected by the thermal detectors and extinguished by the CO2 flooding system. Activation of the detection and suppression system will provide an alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. The rated construction of the area boundaries is sufficient to contain the fire until it is extinguished. A fire in this area will not affect the capability to achieve safe shutdown or result in a release of radioactivity. Overflow of the day tank, as a result of circuit faults in this area, is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-12 12.5-3 REV 28 11/10 FIRE AREA 2402 This area is considered safety related.

DESCRIPTION Battery Room 2A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 191 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Thermal det (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/2408

HNP-FHA-12 12.5-4 REV 28 11/10 CONSTRUCTION All walls of the area are constructed of 3-h-rated, reinforced concrete. The floor is base slab and the roof is nonrated, reinforced concrete. There is a fire-rated Class A door in the west wall to fire area 2408. A 3-h-rated vent damper is provided in the north wall to communicate with area 2403.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with a thermal detection system which will provide an early warning alarm both locally and in the MCR. There is no automatic suppression system within the area. No manual firefighting equipment is available in this area; however, a portable CO2 fire extinguisher and a CO2 hose reel are located in adjacent area 2408.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since the area is bounded on all sides by 3-h-rated barriers, propagation of the design basis fire outside of this area is not considered credible. In addition, due to the low combustible loading and installed detection system, which alarms both locally and in the MCR, the fire is expected to be detected in its incipient stages to ensure prompt response by the plant fire brigade. The available manual firefighting equipment in the adjacent area is adequate to extinguish the fire.

The design basis fire for this area will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.5-5 REV 28 11/10 FIRE AREA 2403 This area is considered safety related.

DESCRIPTION Diesel Generator Room 2A Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,5982

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2; Dry chem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N-C/NR;S,E,W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/0401;A/2404

HNP-FHA-12 12.5-6 REV 28 11/10 CONSTRUCTION The walls of the area are constructed of 3-h-rated, reinforced concrete except for the north wall which is nonrated, reinforced concrete. One large nonrated and one small 3-h-rated ventilation damper are located in the east wall, communicating with area 0401. An additional 3-h-rated damper in the south wall communicates with area 2402. All dampers are closed by high temperature, CO2 flooding system actuation or manual actuation. Fire-rated Class A doors in the east and west walls provide access to areas 0401 and 2404, respectively. A fire-rated Class A rolling door is also provided in the east wall in series with the large vent damper. The floor and ceiling are both nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION Heat detectors are located within the area and provide alarms both locally and in the MCR. The area is also equipped with an automatic CO2 flooding system. Portable CO2 and dry chemical fire extinguishers are located in the area for manual firefighting. In addition, a CO2 hose reel is located in adjacent area 2404. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the 3-h-rated barriers on all sides of this area which are adjacent to any other fire areas and the low combustible loading, the design basis fire will not propagate outside of the area. A design basis fire will, therefore, not affect the capability to achieve or maintain safe shutdown or result in a significant release of radioactivity. In addition, the installed detection system provides both local and MCR alarms to ensure prompt response by the plant fire brigade. As a result, rapid extinguishment of the fire is expected either by the installed suppression system or by the plant fire brigade using the available manual firefighting equipment. Overflow of the diesel generator fuel oil day tanks as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-12 12.5-7 REV 28 11/10 FIRE AREA 2404 This area is considered safety related.

DESCRIPTION Switchgear Room 2E Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,W-C/NR;S,E-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/2403;NR/outside

HNP-FHA-12 12.5-8 REV 28 11/10 CONSTRUCTION The south and east walls of this area are 3-h-rated, reinforced concrete walls. The north and west walls are nonrated, reinforced concrete diesel generator building exterior walls. There is a fire-rated Class A door in the east wall to area 2403. The west wall has a nonrated double door and a vent with nonrated dampers, both communicating with the outside. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage smoke detection which provides an early warning alarm both locally and in the MCR to ensure prompt response by the plant fire brigade. This area is also provided with a CO2 hose reel and CO2 portable fire extinguisher to support manual firefighting. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly, allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning alarms, both locally and in the MCR to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response does not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve safe shutdown or result in the release of any radioactivity.

Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-12 12.5-9 REV 28 11/10 FIRE AREA 2405 This area is considered safety related.

DESCRIPTION Day Tank Room 2C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 83 ft2

COMBUSTIBLES Oil & Grease Diesel fuel Cable None Class A Paper Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading 181,400 Btu/ft2 Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/0401

HNP-FHA-12 12.5-10 REV 28 11/10 CONSTRUCTION All area walls are reinforced concrete and 3-h rated. The floor and roof are nonrated, reinforced concrete. A fire-rated Class A door in the east wall provides access to adjacent area 0401.

There are ventilation ducts with 3-h fire dampers in the east wall to adjacent area 0401. These dampers close automatically on high temperature or CO2 flooding system actuation or they may be manually closed.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The area is equipped with full coverage heat detection which provides an early warning alarm both locally and in the MCR. In addition, an automatic CO2 flooding system is provided. There is no manual firefighting equipment in this area; however, portable CO2 and dry chemical fire extinguishers are easily accessible in adjacent areas 0401 and 2407. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area involving diesel fuel oil as a result of leakage or rupture of the day tank will be rapidly detected by the thermal detectors and extinguished by the CO2 flooding system. Activation of the detection and suppression system will provide an alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The rated construction of the area boundaries is sufficient to contain the fire until it is extinguished. A fire in this area will not affect the capability to achieve safe shutdown or result in a release of radioactivity. Overflow of the day tank as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-12 12.5-11 REV 28 11/10 FIRE AREA 2406 This area is considered safety related.

DESCRIPTION Battery Room 2C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 191 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic, battery cases Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) Thermal det (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/3 - Floors, Ceiling, or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone no.) A/2409

HNP-FHA-12 12.5-12 REV 28 11/10 CONSTRUCTION All walls of the area are constructed of 3-h-rated reinforced concrete. The floor is base slab, and the roof is nonrated reinforced concrete. There is a fire-rated Class A door in the west wall to fire area 2409. A 3-h-rated vent damper, communicating with area 2407, is provided in the north wall.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with a thermal detection system that provides an early warning alarm, both locally and in the MCR. There is no automatic suppression system within the area. No manual firefighting equipment is available in this area; however, a portable CO2 fire extinguisher and a CO2 hose reel are located in adjacent area 2409.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Since the area is fully bounded by 3-h-rated barriers, propagation of the design basis fire outside of this area is not considered credible. In addition, due to the low combustible loading and installed detection system, which alarms both locally and in the MCR, the fire is expected to be detected in its incipient stages to ensure prompt response by the plant fire brigade. The available manual firefighting equipment is adequate to extinguish the fire. The design basis fire for this area will not affect the ability to achieve safe shutdown or result in any release of radioactivity.

HNP-FHA-12 12.5-13 REV 28 11/10 FIRE AREA 2407 This area is considered safety related.

DESCRIPTION Diesel Generator Room 2C Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,598 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable Cable insulation Class A Paper, trash Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) CO2 flood (FC) (see section 7.0) Hose Stations None Portable Extinguishers CO2;Dry chem Detectors (type) Heat det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/3 - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-A/0401;A/2408

HNP-FHA-12 12.5-14 REV 28 11/10 CONSTRUCTION The walls of the area are constructed of 3-h-rated, reinforced concrete. One large nonrated and one small 3-h-rated ventilation damper are located in the east wall, communicating with area 0401. An additional 3-h-rated damper in the south wall communicates with area 2406. All dampers are closed by high temperature, CO2 flooding system actuation, or manual actuation. Fire-rated Class A doors in the east and west walls access area 0401 and 2408, respectively. A fire-rated Class A rolling door is also provided, in series with the large damper, in the east wall.

The floor and ceiling are both nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION Heat detectors are located within the area and provide both local and MCR alarms. The area is also equipped with an automatic CO2 flooding system. Portable CO2 and dry chemical fire extinguishers are located in the area for manual firefighting. In addition, a CO2 hose reel is located in adjacent area 2408. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the enclosure of this area with 3-h-rated barriers and the low combustible loading, the design basis fire is not expected to propagate outside of the area. A design basis fire in this area will, therefore, not affect the ability to achieve safe shutdown or result in any release of radioactivity. In addition, the local and MCR alarms provided by the installed detection system will ensure prompt response to and extinguishment of the fire either by the installed suppression system or by the plant fire brigade using the available manual firefighting equipment. Overflow of the diesel generator fuel oil day tanks as a result of circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this fire hazard analysis.

HNP-FHA-12 12.5-15 REV 28 11/10 FIRE AREA 2408 This area is considered safety related.

DESCRIPTION Switchgear Room 2F Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/3;W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/2402,2407;NR/outside

HNP-FHA-12 12.5-16 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this area are 3-h-rated reinforced concrete walls. The west wall is nonrated, reinforced concrete. There are two fire-rated Class A doors in the east wall to areas 2402 and 2407. There is one nonrated double door in the west wall with nonrated dampers in the vent located above the door, both communicating with the outside. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION This area is equipped with full area coverage smoke detection which provides an early warning alarm, both locally and in the MCR, to ensure prompt response by the plant fire brigade. The area is also provided with a CO2 hose reel and a portable CO2 fire extinguisher to support manual firefighting. Hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly, allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response does not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in the release of any radioactivity. Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this fire hazard analysis.

HNP-FHA-12 12.5-17 REV 28 11/10 FIRE AREA 2409 This area is considered safety related.

DESCRIPTION Switchgear Room 2G Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11846

AREA 1,013 ft2

COMBUSTIBLES Oil & Grease None Cable Cable insulation Class A None Charcoal None Plastics Plastic Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations CO2 Portable Extinguishers CO2 Detectors (type) Smoke det (FC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E-C/3;W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) A/1411,2406;NR/outside

HNP-FHA-12 12.5-18 REV 28 11/10 CONSTRUCTION The north, south, and east walls of this area are 3-h-rated, reinforced concrete walls. The west wall is nonrated, reinforced concrete. There are two fire-rated Class A doors in the east wall to areas 1411 and 2406. There is one nonrated double door in the west wall with nonrated dampers in the vent located above the door, both communicating with the outside. The floor and ceiling are nonrated, reinforced concrete.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier or have been evaluated as acceptable as is documented in appendix I of this fire hazard analysis.

FIRE PROTECTION This area is equipped with full area coverage smoke detection which provides an early warning alarm, both locally and in the MCR to ensure prompt response by the plant fire brigade. The area is also provided with a CO2 hose reel and a portable CO2 fire extinguisher to support manual firefighting. Yard hydrants are located immediately outside of the diesel generator building.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for a full area coverage suppression system has been granted for this area per the April 1984 Safety Evaluation Report.

CONSEQUENCES OF DESIGN BASIS FIRE This area has a low combustible loading consisting of cable insulation. The cable used at E. I.

Hatch Nuclear Plant is predominantly IEEE-383 qualified. A fire in this area would, therefore, be expected to develop slowly, allowing ample time for response by the plant fire brigade. The smoke detectors are expected to provide early warning to further ensure prompt response by the plant fire brigade. The manual firefighting equipment provided is adequate to extinguish a fire in this area. In the unlikely event that early warning and response does not occur, the rated barriers between this and any adjacent areas preclude propagation of the design basis fire beyond the boundaries of this area. A fire in this area will not affect the capability to achieve or maintain safe shutdown or result in the release of any radioactivity. Overflow of the diesel generator fuel oil day tanks due to circuit faults in this area is evaluated in calculation 1380-027-C010 in appendix L of this document.

HNP-FHA-12 12.6-1 REV 28 11/10 FIRE AREA 2601 This area is considered safety related.

DESCRIPTION Unit 2 Service Water Valve Pit 2A East of the Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 144 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Below grade - Floors, Ceiling, or Roof Floor-gravel over concrete; ceiling-grating - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-12 12.6-2 REV 28 11/10 CONSTRUCTION The valve pit is constructed with reinforced concrete walls and floor, approximately 14 ft below grade. The "roof" is grating with access hatch. This construction is defined as a separate fire area due to a spatial separation of greater than 20 ft between this and any other plant areas.

There are two conduit runs between this area and area 2602 (service water valve pit 2B).

These are not considered to be propagation paths due to their small size, long length, and the negligible combustible loading in both areas. Since this is an open yard area, there are no other penetrations.

FIRE PROTECTION Two hydrants, one to the west and one to the southeast of the valve pits, are accessible for manual firefighting.

APPENDIX R EXEMPTIONS

An exemption from the literal requirements in Section III.G.2 for complete 3-h barriers has been requested for this area as documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is considered to be due to transient combustibles. A fire involving transient combustibles within this area will result in no unacceptable consequences, since loss of the redundant safe shutdown circuits in the area may be compensated for by manual actions. The only fires of concern are external exposure fires involving both this area and area 2602 (service water valve pit 2B). These areas are separated by approximately 30 ft.

An asphalt road runs between the two areas and is not considered a propagation path due to a lack of any ignition sources or combustibles sufficient to transfer enough heat to the asphalt material to raise it to its ignition temperature. The only transient combustible presenting an exposure fire hazard to both areas is the truck transport of fuel oil to the auxiliary boiler fuel oil tank. The only credible mechanism for a large spill of fuel oil is human error during refilling operations. The auxiliary boiler fuel oil tank is greater than 50 ft from the valve pits. The grade from the tank slopes to a yard drain near the tank which is still greater than 50 ft from the pits.

Each pit has a 6-in. curb at the edge of the road to prevent the entrance of liquid combustibles.

Thus, a fire in or near this area does not affect the ability to safely shut down the plant. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-12 12.6-3 REV 28 11/10 FIRE AREA 2602 This area is considered safety related.

DESCRIPTION Unit 2 Service Water Valve Pit 2B East of the Diesel Generator Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 144 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Below grade - Floors, Ceiling, or Roof Floor-gravel over concrete; ceiling-grating - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-12 12.6-4 REV 28 11/10 CONSTRUCTION The valve pit is constructed with reinforced concrete walls and floor, approximately 14 ft below grade. The "roof" is grating with access hatch. This construction is defined as a separate fire area due to the spatial separation of greater than 20 ft between this and any other plant areas.

There are two conduit runs between this area and area 2601 (service water valve pit 2A).

These are not considered to be propagation paths due to their small size, long length, and the negligible combustible loading in both areas. Since this is an open yard area, there are no other penetrations.

FIRE PROTECTION Two hydrants, one to the west and one to the southeast of the valve pits, are accessible for manual firefighting.

APPENDIX R EXEMPTIONS

An exemption from the literal requirements of Section III.G.2 for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is considered to be due to transient combustibles. A fire involving transient combustibles within this area will result in no unacceptable consequences, since loss of the redundant safe shutdown circuits in the area may be compensated for by manual actions. The only fires of concern are external exposure fires involving both this area and area 2601 (service water valve pit 2A). These areas are separated by approximately 30 ft.

An asphalt road runs between the two areas and is not considered a propagation path due to a lack of any ignition sources or combustibles sufficient to transfer enough heat to the asphalt material to raise it to its ignition temperature. The only transient combustible presenting an exposure fire hazard to both areas is the truck transport of fuel oil to the auxiliary boiler fuel oil tank. The only credible mechanism for a large spill of fuel oil is human error during refilling operations. The auxiliary boiler fuel oil tank is greater than 50 ft from the valve pits. The grade from the tank slopes to a yard drain near the tank, which is still greater than 50 ft from the pits.

Each pit has a 6-in. curb at the edge of the road to prevent the entrance of liquid combustibles.

Thus, a fire in or near this area does not affect the ability to safely shut down the plant. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-12 12.6-5 REV 28 11/10 FIRE AREA 2603 This area is considered safety related.

DESCRIPTION Unit 2 Condensate Storage Tank/Pump East of the Unit 2 Radwaste Building - el 130 ft

DRAWING NUMBER(S) H-11802

AREA 4,779 ft2

COMBUSTIBLES Oil & Grease Grease Cable None Class A Plywood, clothing, trash Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants nearby Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Floor-concrete slab; ceiling-open - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.6-6 REV 28 11/10 CONSTRUCTION The condensate storage tank and pump enclosure are constructed with reinforced concrete walls approximately 20 ft high on a reinforced concrete slab. The "ceiling" is open. Access is via metal stairs on the side of the enclosure. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION There is no detection or automatic suppression system in the area. A hydrant is located at the northeast corner of the enclosure.

APPENDIX R EXEMPTIONS An exemption from the literal requirements in Section III.G.2 for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE A fire in this area that damages redundant safe shutdown equipment is not considered credible for the following reasons:

1. The majority of the combustibles in this fire area are small quantities associated with dress out areas at the top of the access stairs. These are separated from the nearest safe shutdown components by at least 15 ft.

2. Due to the very limited amount of equipment inside the enclosure, there is little likelihood of transients commonly associated with maintenance and modification activities being introduced. Similarly, there is little likelihood for the introduction of ignition sources.

3. The only safe shutdown components are located on opposite sides of the condensate storage tank and are not susceptible to a single exposure fire. The circuits associated with these components are routed in conduit, which provides a sufficient radiant heat shield for the low concentration of combustibles.

4. The condensate tank enclosure is sufficiently constructed to protect safe shutdown components from a fire external to the enclosure.

In addition, the available manual suppression is adequate to extinguish any insignificant fire which may occur. A fire in this area will not affect the ability to achieve safe shutdown or result in a significant release of radioactivity.

HNP-FHA-12 12.6-7 REV 28 11/10 FIRE AREA 2604 This area is not considered safety related.

DESCRIPTION Hot Machine Shop and Unit 2 Nitrogen Storage Tank East of Unit 2 Reactor Building - el 130 ft

DRAWING NUMBER(S) H-11852

AREA 5,189 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A Wood, plank, paper, clothing, trash, rags, desks, files Charcoal None Plastics Plastic Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations H2O Portable Extinguishers CO2 Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Concrete - Fixed Openings None - Penetrations See text - Doors (Fire-rated Class/Zone #) 2-NR/Outside;NR/1604,2203

HNP-FHA-12 12.6-8 REV 28 11/10 CONSTRUCTION The hot machine shop area, including the Unit 2 nitrogen storage tank enclosure, is constructed of nonrated, reinforced concrete. The north wall is adjacent to area 1604 and forms a part of the nitrogen tank enclosure. There is a double, nonrated airlock door in the north wall accessing area 1604. The west wall, adjacent to areas 1203 and 2203, contains a nonrated door accessing area 2203. The east and south walls are exterior building walls. The south wall has two nonrated doors accessing the outside. The floor and ceiling are nonrated, reinforced concrete. The enclosure around the nitrogen tank is constructed with partial height walls and is open at the top.

Penetrations in the area boundaries are either equal to or greater in rating than the penetrated barrier, have been exempted, or have been evaluated as acceptable as is documented in appendix I of this document.

FIRE PROTECTION The machine shop portion of this area is equipped with smoke detectors; the nitrogen tank portion has no detection or suppression system. The area is also equipped with portable CO2 fire extinguishers and hose stations for manual firefighting.

APPENDIX R EXEMPTIONS An exemption from the Section III.G.2 requirement for complete 3-h barriers has been requested for this area as is documented in appendix C of this document. However, per the January 1987 NRC SER, no exemption is required, based on part 4 of the NRC Generic Letter 86-10.

CONSEQUENCES OF DESIGN BASIS FIRE Due to the negligible combustible loading in the area, a fire of significant size is not considered credible. The design basis fire is not of sufficient magnitude to be capable of breaching the nonrated reactor building exterior wall adjacent to this area due to the substantial construction of the wall as both a reactor building exterior wall of solid concrete approximately 2 ft thick and as a secondary containment boundary with airtight sealed penetrations. Similarly, the design basis fire is not expected to propagate through any of the other exterior walls of this area to present an exposure fire hazard to any other areas. A fire in this area will result in only localized damage. Since there are no safe shutdown circuits in the area, the only impact on safe shutdown capability would be the loss of the Unit 2 nitrogen system. Safe shutdown can be achieved using the Unit 1 nitrogen system. This area contains minimal amounts of surface contaminated radioactive materials. Release of these materials in the event of a fire is not expected to occur since propagation of a fire outside of the area is not expected.

HNP-FHA-12 12.6-9 REV 28 11/10 FIRE AREA 2605 This area is not considered safety related.

DESCRIPTION Unit 2 Circulating Water Pump Pit East of the Power Block

DRAWING NUMBER(S) H-11802

AREA 2,555 ft2

COMBUSTIBLES Oil & Grease Lube oil Cable None Class A None Charcoal None Plastics None Miscellaneous Rubber Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 46,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - Hydrants @ CST & Cooling towers Portable Extinguishers CO2 Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-C/NR - Floors, Ceiling or Roof Floor-Concrete; Ceiling-None - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone no.) None

HNP-FHA-12 12.6-10 REV 28 11/10 CONSTRUCTION The pump pit is constructed of reinforced concrete (below grade) with a reinforced concrete slab floor. The "roof" is open and at grade. The walls are approximately 15 ft high. Since this is an open yard area, penetrations are not sealed.

FIRE PROTECTION This area contains portable CO2 fire extinguishers. Fire hydrants are located near the condensate storage tanks and the cooling towers. No automatic detection or suppression systems are provided.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is assumed to result in the loss of both Unit 2 circulating water pumps. However, the pumps are not required for safe shutdown. Other safe shutdown circuits and components are either embedded or located on the sides of the intake flume or the on the top of the pit wall. Loss of the circuits has been evaluated as acceptable by Bechtel calculation 66-2601. The components have been demonstrated to fail in the required position due to effects of the fire by the same calculation. Due to the low combustible loading, the substantial, below grade construction of the pit, and the large (greater than 50 ft) spatial separation of the pit from any other fire areas, propagation of the design basis fire outside of this area is not considered credible.

HNP-FHA-12 12.6-11 REV 28 11/10 FIRE AREA 2606 This area is not considered safety related.

DESCRIPTION Unit 2 Transformer Yard West of the Unit 2 Turbine Building

DRAWING NUMBER(S) H-11802, H-11850

AREA Approximately 16,500 ft2 enclosing all six transformers and the fire protection valve house.

COMBUSTIBLES Oil & Grease Transformer oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading See text Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations Hydrants Portable Extinguishers Dry chem Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls None - Floors, Ceiling, or Roof Concrete Pad/Gravel; None - Fixed Openings N/A - Penetrations See text - Doors (Fire-rated Class/Zone no.) N/A

HNP-FHA-12 12.6-12 REV 28 11/10 CONSTRUCTION This open area contains six large oil filled transformers, mounted on concrete pads surrounded by gravel, which are designed to contain any oil spills to a localized area. All six transformers are located within 50 ft of the turbine building exterior wall, which forms the east boundary of the area. The transformer cases are constructed of heavy sheet steel. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION Each transformer is equipped with a fixed automatic water spray suppression system activated by a dry pilot system in the transformers. The area is served by three fire hydrants. The fire protection valve house is equipped with a portable dry chemical fire extinguisher for manual firefighting. In addition, the high visibility and traffic in the area would provide rapid detection of any fire and ensure prompt response by the plant fire brigade which is trained in the fighting of transformer fires.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area presents an exposure fire hazard to the Unit 2 turbine building. The guidance of Appendix A to BTP 9.5-1 position D.1.h indicates that oil filled transformers within 50 ft of the safety-related structures should have any openings in the separating wall sealed to a 3-h rating.

Three transformers in this area are less than 20 ft from the turbine building exterior wall; three transformers are less than 40 ft from the same wall. The turbine building contains circuits for both safe shutdown paths. This arrangement is considered acceptable since:

(1) The only openings in the turbine building west wall in proximity to these transformers are the switchgear control cable tray and the main plant bus ducts; (2) Radiant and convected heat entering the openings will be rapidly diluted in the large volume of the turbine building; (3) Each transformer is provided with an automatic water spray system;

(4) Only one safe shutdown path will be affected in the unlikely event a fire propagates to the turbine building.

(5) The PPT transformer is separated from the station auxiliary transformers by a fire barrier.

(6) A fluid detection curb is provided around the PPT transformer.

HNP-FHA-12 12.6-13 REV 28 11/10 FIRE AREA 2607 This area is not considered safety related.

DESCRIPTION Unit 2 Radwaste Dilution Valve Pit Adjacent to the Unit 2 Radwaste Loading Dock

DRAWING NUMBER(S) H-11802

AREA Approximately 100 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None Portable Extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls N,S,E,W-Concrete - Floors, Ceiling or Roof Gravel over concrete; Open - Fixed Openings OP/Outside - Penetrations See text - Doors (Fire-rated Class/Zone #) None

HNP-FHA-12 12.6-14 REV 28 11/10 CONSTRUCTION The valve pit is constructed with nonrated, reinforced concrete walls and floor, approximately 14 ft below grade. The "roof" is open. This construction is defined as a separate fire area due to the spatial separation of greater than 20 feet between this and any other plant areas. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION A fire hydrant is located to the east of the valve pit. No other detection or suppression systems are provided.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE There is no design basis fire postulated for this area due to the lack of fixed combustibles. An exposure fire to this area or a fire in this area due to the introduction of transient combustibles is unlikely due to the separation of this pit from other fire areas and since normal activities would not result in more than a negligible transient combustible loading. In the unlikely event of a fire in this area, no adverse impact on the ability to achieve safe shutdown would result since fire induced damage to all of the safe shutdown circuits and components in this area has been analyzed as acceptable. Manual firefighting equipment (hydrants) for this area is adequate to extinguish any fire which may occur as the result of the introduction of transient combustibles.

HNP-FHA-12 12.6-15 REV 28 11/10 FIRE AREA 2608 This area is not considered safety related.

DESCRIPTION Unit 2 Transformers in the Unit 1 Transformer Yard Unit 1 Transformer Yard

DRAWING NUMBER(S) H-11802, H-11850

AREA Each transformer covers approximately 400 ft2. The entire yard area is approximately 9,000 ft2.

COMBUSTIBLES Oil & Grease Transformer oil Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading High Max. Permissible Loading See text Fire Duration Greater than 3 h

FIRE PROTECTION (AVAILABLE) Suppression (type) Water spray (PC) (see section 7.0) Hose Stations None Portable Extinguishers None Detectors (type) Dry pilot (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls None - Floors, Ceiling, or Roof Floor-Concrete Pad/Gravel; Ceiling-None - Fixed Openings N/A - Penetrations See text - Doors (Fire-rated Class/Zone no.) N/A

HNP-FHA-12 12.6-16 REV 28 11/10 CONSTRUCTION This is an open yard area. The transformer oil is contained in the steel transformer cases. The transformers are mounted on concrete pads with deep gravel paving over the balance of the area. Since this is an open yard area, there are no penetrations.

FIRE PROTECTION The fire protection for this area consists of fixed automatic water spray suppression systems for each transformer, actuated by the dry pilot portion of the system. Main control room alarms are provided to indicate suppression system actuation. Fire hydrants are located at the perimeter of the area. In addition, the gravel paving is designed to contain any oil spills to a localized area.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown or safety-related equipment and presents no exposure fire hazard to any safe shutdown or safety-related equipment. A fire in this area is not expected to propagate due to the combination of fixed suppression systems, gravel paving designed to contain any oil spills in a localized area, and large spatial separation from all other areas of the plant. The available manual firefighting equipment and high visibility of this area enhance the likelihood that any fires would be quickly detected and extinguished by the plant fire brigade.

HNP-FHA-12 12.6-17 REV 28 11/10 FIRE AREA 2610 This area is considered safety related.

DESCRIPTION Diesel Fuel Oil Storage Tank 2A Underground - below 130 ft

DRAWING NUMBER(S) H-11802

AREA No area calculation is required due to tanks being located underground.

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading See text Fire Duration Less than 1 h FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations Hydrant Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-12 12.6-18 REV 28 11/10 CONSTRUCTION The diesel fuel oil storage tanks are 40,000-gal capacity underground tanks approximately 12 ft below grade. The area surrounding the tanks has been designed to drain spills and water away from the fire area.

FIRE PROTECTION Two hydrants, one to the southeast and one to the north of the fuel oil storage tanks, are accessible for manual firefighting. Three portable dry chemical fire extinguishers are post mounted in the vicinity of the tanks. A 150-lb dry chemical extinguisher is located near fire area 0501 approximately 300 ft away.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF A DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences since all components and the fuel oil storage tanks are located underground. A fire involving a fuel oil tank truck will not impose a threat to the storage tanks or operation of the diesel generators. The diesel generators are separated from this fire area by a noncombustible exterior structural wall. Since the safe shutdown components are below grade and a tank truck spill will not impose a threat, there is no effect on safe shutdown capability. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-12 12.6-19 REV 28 11/10 FIRE AREA 2612 This area is considered safety related.

DESCRIPTION Diesel Fuel Oil Storage Tank 2C Underground - below 130 ft

DRAWING NUMBER(S) H-11802

AREA No area calculation is required due to tanks being located underground.

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading See text Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations Hydrant Portable Extinguishers Dry chem Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-12 12.6-20 REV 28 11/10 CONSTRUCTION The diesel fuel oil storage tanks are 40,000-gal capacity underground tanks approximately 12 ft below grade. The area surrounding the tanks has been designed to drain spills and water away from the fire area.

FIRE PROTECTION Two hydrants, one to the southeast and one to the north of the fuel oil storage tanks, are accessible for manual firefighting. Three portable dry chemical fire extinguishers are post mounted in the vicinity of the tanks. A 150-lb dry chemical extinguisher is located near fire area 0501 approximately 300 ft away.

APPENDIX R EXEMPTIONS None.

CONSEQUENCES OF A DESIGN BASIS FIRE A fire involving transient combustibles within this area will result in no unacceptable consequences since all components and the fuel oil storage tanks are located underground. A fire involving a fuel oil tank truck will not impose a threat to the storage tanks or operation of the diesel generators. The diesel generators are separated from this fire area by a noncombustible exterior structural wall. Since the safe shutdown components are below grade and a tank truck spill will not impose a threat, there is no effect on safe shutdown capability. This area contains no radioactive materials which could be released in the event of a fire.

HNP-FHA-12 12.7-1 REV 28 11/10 FIRE AREA 2801 This area is not considered safety related.

DESCRIPTION Unit 2 "A" Cooling Tower and Switchgear Building East of the Unit 2 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11856, H-11861

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2; Dry chem Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-12 12.7-2 REV 28 11/10 CONSTRUCTION The cooling towers are constructed with concrete end walls, concrete dividing walls between sections, and a concrete basin. The spray diffuser frames are metal and the diffuser fill material is plastic. The switchgear house is constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard area, not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no suppression system for fire protection in this area. The switchgear house is equipped with smoke detectors and portable CO2 and dry chemical fire extinguishers. Both local and main control room (MCR) alarms are provided to indicate detection system actuation to ensure prompt response by the plant fire brigade. In addition, hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area which could be released in the event of a fire. The installed detection is expected to promptly notify the plant operators and the plant fire brigade to extinguish any fires which might occur. The open area around the towers and the numerous hydrants provided enhance the ability of the plant fire brigade to manually fight any fires. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-12 12.7-3 REV 28 11/10 FIRE AREA 2802 This area is not considered safety related.

DESCRIPTION Unit 2 "B" Cooling Tower and Switchgear Building East of the Unit 2 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11856, H-11861

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2 Dry chem Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling, or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone no.) See text

HNP-FHA-12 12.7-4 REV 28 11/10 CONSTRUCTION The cooling towers are constructed with concrete end walls, concrete dividing walls between sections, and a concrete basin. The spray diffuser frames are metal and the diffuser fill material is plastic. The switchgear house is constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard area not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no suppression system for fire protection in this area. The switchgear house is equipped with smoke detectors and portable CO2 and dry chemical fire extinguishers. Both local and MCR alarms are provided to indicate detection system actuation to ensure prompt response by the plant fire brigade. In addition, hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area that could be released in the event of a fire. The installed detection is expected to promptly notify the plant operators and the plant fire brigade to extinguish any fires that might occur. The open area around the towers and the numerous hydrants provided enhance the ability of the plant fire brigade to manually fight any fires. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-12 12.7-5 REV 28 11/10 FIRE AREA 2803 This area is not considered safety related.

DESCRIPTION Unit 2 "C" Cooling Tower and Switchgear Building East of the Unit 2 Power Block - el 118 ft

DRAWING NUMBER(S) H-11802, H-11856, H-11861

AREA 35,000 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A None Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 100,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants in area Portable Extinguishers CO2 Dry chem Detectors (type) Smoke det (PC) (see section 7.0)

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone #) See text

HNP-FHA-12 12.7-6 REV 28 11/10 CONSTRUCTION The cooling towers are constructed with concrete end walls, concrete dividing walls between sections, and a concrete basin. The spray diffuser frames are metal and the diffuser fill material is plastic. The switchgear house is constructed of sheet metal on a wood frame over a concrete slab. Since this is an open yard area not important to safe shutdown and located away from other plant areas, penetrations are not sealed.

FIRE PROTECTION There is no suppression system for fire protection in this area. The switchgear house is equipped with smoke detectors and portable CO2 and dry chemical fire extinguishers. Both local and MCR alarms are provided to indicate detection system actuation to ensure prompt response by the plant fire brigade. In addition, hydrants are provided near this area for manual firefighting.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe shutdown equipment and does not present an exposure fire hazard to any other plant areas. There are no radioactive materials in the area which could be released in the event of a fire. The installed detection is expected to promptly notify the plant operators and the plant fire brigade to extinguish any fires which might occur. The open area around the towers and the numerous hydrants provided enhance the ability of the plant fire brigade to manually fight any fires. A fire in this area is not expected to impair the ability to safely shut down the plant or to result in any radioactive release.

HNP-FHA-12 12.7-7 REV 28 11/10 FIRE AREA 2804 This area is not considered safety related.

DESCRIPTION Unit 2 Turbine Building Back Entrance (Frisker Building)

Immediately Outside the U2 Turbine Building Southeast Entrance

DRAWING NUMBER(S) H-11802

AREA 615 ft2

COMBUSTIBLES Oil & Grease None Cable None Class A Wood Charcoal None Plastics None Miscellaneous None Miscellaneous Gases None

DESIGN BASIS FIRE Combustible Loading Low Max. Permissible Loading 20,000 Btu/ft2 Fire Duration Less than 1 h

FIRE PROTECTION (AVAILABLE) Suppression (type) None Hose Stations None - hydrants nearby Portable Extinguishers Dry chem fire extinguisher located on inside East wall Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text - Floors, Ceiling or Roof See text - Fixed Openings See text - Penetrations See text - Doors (Fire-rated Class/Zone no.) See text

HNP-FHA-12 12.7-8 REV 28 11/10 CONSTRUCTION The fire area consists of a precast, nonrated, concrete modular structure with a concrete slab foundation. The structure is located adjacent to the Unit 2 turbine building east wall, south end.

Since this is an outside yard building not important to safe shutdown, penetrations are not required to be sealed.

FIRE PROTECTION There is no suppression or detection system in this area. Hose stations and portable fire extinguishers are provided locally and in the adjacent turbine building. A hydrant is located nearby to the east of this area.

APPENDIX "R" EXEMPTIONS None.

CONSEQUENCES OF DESIGN BASIS FIRE The design basis fire for this area is considered insignificant due to the low combustible loading and separation of this area from all other plant areas. In the unlikely event of a significant fire in this area due to the introduction of transient combustibles, there may be a propagation hazard to the adjacent turbine building. However, propagation to the turbine building is not considered credible since:

1) This is an outside area; any heat generated would be rapidly dissipated.

2) The turbine building wall is substantial, reinforced concrete containing only one small penetration within 30 ft of this area.

3) Radiant and convected heat entering the turbine building would be rapidly dissipated in the large, open volume of the turbine building.

In addition, if propagation does occur, only one safe shutdown path will be affected. A design basis fire in this area will therefore not affect the ability to achieve safe shutdown and will not result in any radioactive release.

HNP-FHA-12 12.7-9 REV 28 11/10 FIRE AREA 2807 This area is not considered safety related.

DESCRIPTION Unit 2 helper cooling tower South of Unit 2 cooling tower no. 2A

DRAWING NUMBER(S) H-11802

AREA 31,000 ft2

COMBUSTIBLES Oil & grease None Cable Cable insulation Class A None Charcoal None Plastics PVC Miscellaneous None Miscellaneous gases None

DESIGN BASIS FIRE Combustible loading Low Max. permissible loading 100,000 Btu/ft2 Fire duration Less than 1 h

FIRE PROTECTION AVAILABLE Suppression (type) None Hose stations None - hydrants nearby Portable extinguishers None Detectors (type) None

FIRE RESISTANCE RATING Actual

- Walls See text. - Floors, ceiling or roof See text. - Fixed openings See text. - Penetrations See text. - Doors (Fire-rated Class/Zone no.) See text.

HNP-FHA-12 12.7-10 REV 28 11/10 CONSTRUCTION The Unit 2 helper cooling tower is a concrete structure assembled from precast or prestressed concrete components. The structural framing is precast reinforced concrete. The fan deck consists of concrete panels. The tower wall is constructed of concrete panels extending down from the fan deck to the top of the air inlet. The cooling tower is divided into 12 cells separated by concrete panels with concrete windscreens on the end cells.

The heat exchanger consists of formed plastic sheets in modules supported from below by structural members and covering the entire interior plan area of the tower. The water distribution piping is PVC. The fan stacks are constructed of heavy, ribbed fire-retardant fiberglass panels bolted together.

The electrical equipment building is a small structure housing the cooling tower MCCs and is a separate building from the cooling tower. The electrical equipment building has a metal structural frame, as well as metal siding and roof. The floor is concrete.

FIRE PROTECTION There is no automatic fire detection or suppression at this building. A hydrant is located approximately 40 ft to the north and 90 ft to the west. Other hydrants are in the area nearby.

CONSEQUENCES OF DESIGN BASIS FIRE This area contains no safe-shutdown or safety-related equipment, and presents no exposure fire hazard to any safe-shutdown or safety-related equipment. A fire in this area is not expected to propagate toward any other plant structures due to its noncombustible concrete construction.

Since the combustible loading of this area is low and no safety-related components are resident, a design basis fire is not expected to have any adverse effect on the ability to achieve and maintain safe shutdown.

13.0 Historical Material

13.1 Exemption Request Submittals and Safety Evaluation Reports

the southern electric system

the southern electric system

the southern electric system

the southern electric system

the southern electric system

the southern electric system

the southern electric system

the southern electric system

the southern electric system

gage - babcock & associates, inc.

13.2 Detection Scope Document

13.3 Response to Generic Letter 81-12

13.4 Fire Resistance of Concrete Block at HNP

HNP-FHA-9 9.10-J-1 REV 28 9/10

SECTION 9.10

APPENDIX J FIRE RESISTANCE OF CONCRETE BLOCK AT HNP*

• The calculations that demonstrate the fire resistance of concrete block have been removed from Appendix J and re-established as calculation SMNH94-046.

13.5 Combustibility of Askarels

HNP-FHA-9 9.11-K-1 REV 28 9/10

SECTION 9.11

APPENDIX K COMBUSTIBILITY OF ASKARELS*

• The calculations that demonstrate the combustibility of askarels have been removed from Appendix K and re-established as calculation SMNH94-047.

13.6 Miscellaneous Supporting Calculations

HNP-FHA-9 9.12-L-1 REV 28 9/10

SECTION 9.12

APPENDIX L MISCELLANEOUS SUPPORTING CALCULATIONS*

• The calculations that document miscellaneous fire protection criteria have been removed from Appendix L and re-established as calculation SMNH94-048.

13.7 Fire Detection Systems Phased Implementation Database

HNP-FHA-9 9.13-M-1 REV 28 9/10

SECTION 9.13 APPENDIX M FIRE DETECTION SYSTEMS PHASED IMPLEMENTATION DATABASE*

• Implementation has been completed. Since this database ceases to serve any function, it has been removed from the FHA.