ML16256A450

Revision 309 to Final Safety Analysis Report, Chapter 9, Auxiliary Systems, Section 9.4

ML16256A450
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Issue date:	08/25/2016
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WSES-FSAR-UNIT-3 9.4-1 Revision 14 (12/05)9.4 AIR CONDITIONING, HEATING, COOLING AND VENTILATION SYSTEMS9.4.1 CONTROL ROOM AIR CONDITIONING SYSTEM The control room envelope at elevation +46 ft- MSL in the Reactor Auxiliary Building will be referred to as the "control room" and will include the following: a) main control room (includes supervisor office),

b) computer room, c) toilet areas, d) kitchenette and kitchen, e) computer room supplemental air conditioning equipment room, f) conference room (Technical Support Center) and vault, g) storage area and emergency storage area, h) locker rooms, i) emergency living quarters (Technical Support Center),

j) control room heating, ventilating and air conditioning equipment room, k) corridors,

1) Technical Support Center (NRC Office), and m) QSPDS Room.

9.4.1.1 Design Bases The Control Room Air Conditioning System is designed to: (DRN 04-977, R14)a) limit control room doses due to airborne activity to within General Design Criterion 19 (Appendix A of 10CFR50) and 10CFR50.67 limits, (DRN 04-977, R14)b) maintain the ambient temperature required for personnel comfort during normal plant operating conditions, as shown in Table 9.4-1, c) permit personnel occupancy and proper functioning of instrumentation and controls during all normal and design basis accident conditions assuming a single active failure coincident with a

loss of offsite power, d) withstand a safe shutdown earthquake without loss of function, e) permit personnel occupancy in the control room during a toxic chemical accident, and WSES-FSAR-UNIT-3 9.4-2 Revision 15 (03/07) f) provide accessibility for adjustments and periodic inspections and testing of the system components to assure continuous functional reliability.

The safety class and seismic classifications of the Control Room Air Conditioning System components are given in Table 3.2-1. Protection against the dynamic effects associated with postulated pipe rupture is discussed in Section 3.6. Environmental design criteria and qualification of components are discussed in Section 3.11. Control room habitability following a design basis accident is discussed in Section 6.4.

9.4.1.2 System Description

The Control Room Air Conditioning System air flow diagram is shown on Figure 9.4-1. The principal system component design date are listed in Table 9.4-2.

9.4.1.2.1 Normal Operation

(DRN 06-843, R15)

During normal operation, outside air (2200 cfm) enters an air intake louver located at elevation 62 ft. -1 in. MSL at the northeast corner of the Reactor Auxiliary Building. Two safety-related 100 percent capacity air handling units (AH-12) are provided. One unit operates on a continuous basis and maintains the open position of the outside air intake butterfly valves (3HV-B169A and 3HV-B170B) and dampers D-39 and D-40, while the second unit is on standby. The second unit will be automatically started by Class

1E instrumentation should the first one fail. (DRN 06-843, R15)

Each air handling unit includes a medium efficiency filter, chilled water cooling coil, electric heating coil and centrifugal fan. Each cooling coil is served by the Essential Services Chilled Water System described in Subsection 9.2.9. A Class 1E temperature sensing element in the air handling unit's discharge duct modulates the motor operated chilled water control valve to maintain a fixed air discharge temperature. A Class 1E low-limit thermocouple provides freeze protection by sensing the temperature across the upstream face of the chilled water cooling coil. It will fully close the outside air intake damper to set the Control Room Air Conditioning System on a 100 percent recirculation mode when the air temperature is at or below its setpoint. When the air temperature entering the coil is at or below its low-

low setpoint, the unit fan is stopped and the standby unit started.

Zone reheat coils are provided in various branches of the duct distribution system. These reheat coils are non-safety, seismic Category I and function only during normal operation. Room thermostats control operation of these electric heating coils to maintain desired room temperatures. These coils will not operate unless air flow is established through the coils.

Air (2000 cfm) is exhausted to the atmosphere from the control room through the toilet exhaust fans (E-

34) and a conference room and kitchen exhaust fan (E-42). Starting the toilet exhaust fan (E-34) manually from the control room will open the discharge butterfly valves (3HV-B177A and 3HV-B178B)

and close bypass dampers D-18 after which the fan will start. Starting the conference room and kitchen exhaust fan (E-42) manually from the control room will open the discharge butterfly valves (3HV-B177A

and 3HV-B172B) and close bypass dampers D-19 after which the fan will start.

WSES-FSAR-UNIT-3 9.4-3 Revision 15 (03/07)

Local coolers remove heat generated in the control room HVAC equipment room. These safety-related coolers (AH-26) are redundant and each consists of a centrifugal fan, chilled water cooling coil and throw-

away filters.

9.4.1.2.2 Smoke Purge Operation

In the event of a fire in the computer room underfloor, the supply and return dampers D-62 and D-63 in the ducts serving the computer room are closed to prevent the spread of fire to other spaces in the control room. Smoke will be exhausted from the raised floor plenum by fan E-42, acting as a purge unit, after damper D-64 is opened and dampers D-43, D-44 and

D-67 are closed.

The main control room can be purged of smoke or fumes by fan E-42 after damper D-43 is opened and dampers D-44, D-64 and D-67 are closed. Additional purging can be accomplished by fan E-34 by

closing dampers D-46 and D-68 and opening damper D-45.

9.4.1.2.3 Emergency Operation

See Subsection 6.4.3.3 for a description of the emergency operation of the system.

9.4.1.3 Safety Evaluation

The Control Room Air Conditioning System is completely isolated from the Reactor Auxiliary Building Ventilation System described in Subsection 9.4.3, physically as well as functionally. The control room emergency filtration units are an engineered safety feature described in detail as part of the fission

product removal system in Subsection 6.5.1.

In the event of a fire within an area of the control room, means are provided to purge the smoke. A

description of the fire detection and protection available to the control room is given in Subsection 9.5.1.

(DRN 06-898, R15)

In the event of smoke detection at the normal outside air intake the following arrangement maintains the habitability of the main control room and meets the intent of isolating it from the same conditions: (DRN 06-898, R15)

(DRN 06-843, R15)

There is one normal outside air intake (louver) for the control room. It is located at elevation 62 feet 1 inch MSL at the northeast corner of the Reactor Auxiliary Building. This is in a position located high above an open area and there is no direct fire exposure to it. During the normal mode of operation, only 2200 cfm of outside air is drawn into the main control room HVAC system to mix with approximately 37,000 cfm of return air. If outside air becomes laden with smoke from an outside or a remote source, it would be diluted by the large volume of return air prior to entry into the control room. This small amount of smoke in the mixture would be readily discernible by personnel in the continually manned control room.

They would also be alerted by an alarm from the main control room area (DRN 06-843, R15)

WSES-FSAR-UNIT-39.4-4Revision 12-A (01/03)detectors. This mixture would be tolerable and not adversely affect the operation of the main control room.

In the unlikely event that the mixture does become untenable, or if it is the intent of the control room operator to mitigate the situation, he can investigate the conditions and determine the necessity to manually stop the smoke entry by closing the isolation valves on the normal outside air intake. This can be done from

the control room by manually simulating the alarm for the toxic chemical cond itions.The Control Room Air Conditioning System is protected from externally generated missiles by virtue of its location inside the Reactor Auxiliary Building. The outside air intakes are all located in HVAC shafts within the Reactor Auxiliary building. The louvers at the top of the shafts are all missile protected. Where

required, fan casings are designed to contain internally generated missiles, such as a loose fan wheel blade

being propelled by centrifugal force, in order to prevent one safety train from damaging the other.

Adequate drainage in the HVAC equipment room is provided to prevent the possibility of flooding should a chilled water pipe rupture.

9.4.1.4 Inspection and Testing Requirements All fans of the Control Room Air Conditioning S ystem are tested in accordance with standards of the Air Moving and Conditioning Association. Each component is inspected prior to installation.

Each system component is operated and tested initially with regard to flow paths, flow capacity and mechanical operability. Ductwork is tested for leakage during installation.

A system air balance test and adjustment to design conditions is conducted in the course of the plant preoperational test program. Instruments are calibrated during testing. Automatic c ontrols are tested for actuation at the proper set points. Alarm functions are checked for operability during preoperational testing.Components are accessible for periodic inspection. The emergency filtration units are inspected and tested in accordance with procedures described in Subsection 6.5.1.4.

9.4.2 FUEL HANDLING BUILDING VENTILATION SYSTEM 9.4.2.1 Design Basis The Fuel Handling Building Ventilation System is designed to:(DRN 02-1753, R12-A)a)provide a suitable environment for personnel, equipment and controls in the Fuel Handling Building(refer to Table 9.4-1).(DRN 02-1753, R12-A)b)direct airflow from areas of low potential airborne contamination to areas of progressively higher potential airborne contamination,(DRN 02-1753, R12-A)c)Deleted(DRN 02-1753, R12-A)

WSES-FSAR-UNIT-39.4-5Revision 12-A (01/03)d)withstand a safe shutdown earthquake without loss of function by that portion of the Fuel Handling Building Ventilation System required to mitigate the consequences of a fuel handling accident, ande)provide accessibility for adjustments and periodic inspections and testing of the system components to assure continuous functional reliability.(DRN 02-1753, R12-A)Protection of the Fuel Handling Building Ventilation System from wind and tornadoes is discussed inSection 3.3. Flood design is discussed in Section 3.4. Missile protection is discussed in Section 3.5.

Protection against dynamic effects associated with postulated pipe rupture is discussed in Section 3.6.

Environmental design criteria and qualific ation of components are discussed in Section 3.11.(DRN 02-1753, R12-A)(DRN 02-1753, R12-A)(DRN 02-1753, R12-A)9.4.2.2S ystem Description The Fuel Handling Building Ventilation System flow diagram is shown on Figure 9.4-

2. The principal systemcomponent design data are presented in Table 9.4-4.

9.4.2.2.1 Normal OperationDuring normal operation, air is distributed throughout the Fuel Handling Building by non-safety air handling unit AH-14 and exhausted from the building by the non-safety normal exhaust fans E-20.The control room operator will start air handling unit AH-14, and then start one of the two redundant 100 percent capacity exhaust fans E-20. The exhaust fans are interlocked with the air handling unit, so that they cannot function unless the air handling unit is operating. Gravity damper GD-22 prevents air recirculation through the respective non-operating fan.Air handling unit AH-14 includes a bank of medium efficiency filters, electric heating coil (EHC-

41) and centrifugal fan.

The electric heating coil will not operate unless airflow is established in the discharge duct of the air handling unit. A low limit freeze protection thermocouple, located downstream of the electric heating coil, will stop the air handling unit fan when the air temperature falls below its setpoint. The output

of the electric heating coil will be controlled by means of controls sensing temperature downstream of the supply fan.

The ductwork is designed to assure that airflow is directed from areas of low potential radioactivity to areas of progressively higher potential radioactivity.

WSES-FSAR-UNIT-39.4-6Revision 12-A (01/03) 9.4.2.2.2 Emergency Operation(DRN00-691, R11-A; 02-1753, R12-A)

The fuel handling building ventilation system is not required to mitigate the consequences of a fuel handling accident. However, the system is maintained to function as described in Section 9.4.2.1, Design Basis.(DRN 02-1753, R12-A)

Upon the occurrence of a fuel handling accident, Class 1E radiation monitors, described in Subsection 12.3.4, will produce a fuel handling accident signal. In order to isolate the envelope of the Fuel Handling Building, where such an accident can take place, safety-related isolation dampers, D-37 and D-38 are provided. The accident signal will stop air handling unit AH-14, stop normal exhaust fans E-20, close isolation dampers D-37 and D-38, and start the safety-related emergency filtration exhaust units.Additionally, it will allow the safety-related emergency H&V room exhaust fan E-21 to start and the corresponding air intake Louver LD-40 to open subject-to space temperature as measured by the space temperature elements.. The accident signal will also position dampers D-27, D-28(A), D-28(B), D-31, D-35(A), D-35(B), D-36(A) and D-36(B) to their fail positions. Louver-dampers LD-40 are interlocked with respective H&V room exhaust fans E-21. Two permissives, namely the fuel handling accident signal and the

room temperature, are pro vided for these fans.(DRN00-691, R11-A)The safety-related emergency filtration exhaust units E-35 are redundant, and each is sized at 100 percent exhaust air capacity. Each unit includes an electric heating coil, a bank of medium efficiency filters, a bank

of HEPA prefilters, a charcoal adsorber, a bank of HEPA after-filters, and a centrifugal exhaust fan. Both exhaust fans will start, and their associated intake dampers D-29 will open upon receipt of the fuel handling accident signal. The electric heating coil is provided to assure that the air entering the adsorber has a

relative humidi ty not exceeding 70 percent in order to assure maximum adsorption efficiency of the charcoal.

When the emergency filtration units are started, their respective makeup air dampers D-72 operate in response to differential pressure controls, whose function is to maintain the spent fuel handling area at a negative pressure relative to the outdoors.

Upon completion of the above sequence of events, the control room operator has the option to manually stop one of the two operating emergency filtration units, cau sing its intake damper to close and its electric heating coil to be de-energized.

The control room operator then has the option of manually restarting the Fuel Handling Building normal ventilation system, the air handling unit AH-14 and the exhaust fan E-20, to cool, ventilate, and if necessary, maintain a positive pressure in the uncontaminated areas with respect to the contaminated areas of the Fuel Handling Building. If the operator chooses this option, a bypass damper D-36 automatically re-routes 15000cfm from AH-14 which normally is intended for the potentially contaminated areas. Safety-related area radiation monitors are provided to alarm the operator of high radiation in any safety-related area of the Fuel

Handling Building.

A low-flow air bleed bypass is provided across the two emergency filtration units E-35, connecting the two units at the suction side of their respective exhaust fans. This will assure uninterrupted flow of cooling air

through the adsorber of the standby filtration unit.

The control room operator is provided with the following safety-related alarms for the Fuel Handling Building Ventilation System:a)differential pressure (high and low) across each emergency filtration unit, WSES-FSAR-UNIT-39.4-7Revision 12-A (01/03)b)temperature difference (low) across electric heating coil,c)high H&V room temperature, and d)low Fuel Handling Building to ambient differential pressure.

The following safety-related indication is provided in the main control room:a)status of emergency H&V room exhaust fans, b)position of emergency filtration exhaust units inlet dampers D-29,c)status of emergency filtration exhaust unit fans E-35, d)position of isolation dampers D-37 and D-38, ande)differential pressure across emergency filtration units.f)position of dampers D-35 and D-36 9.4.2.3 Safety Evaluation The portion of the Fuel Handling Building Ventilation System that is normally in operation meets the requirements of the Uniform Building Code and is on the manual load block of the diesel generators. The post-accid ent air cleaning portion of the Fuel Handling Building Ventilation System is designed to Safety Class 3 and seismic Category I requirements. All isolation dampers and exhaust air ductwork transporting contaminated air subsequent to an accident is designed and supported to satisfy seismic Category I

requirements.(DRN 02-1753, R12-A)

The emergency filtration exhaust units maintain a negative pressure in the contaminated envelope of the Fuel Handling Building. The normal ventilation system, if operating, will maintain a positive pressure in uncontaminated areas to ensure air transfer only to the potentially contaminated areas. This has an effect

of inducing leakage into the contaminated area and prohibiting any outleakage of air.

The exhaust air is drawn through the filtration units before it is released to the outside environment.(DRN 02-1753, R12-A)

All safety related components of the Fuel Handling Building Ventilation System are designed to satisfy the single failure criterion. Redundant trains are powered from separate safety buses A and B so that in the

event of a single active failure in one train, the other safety bus provides power to its associated train which operates and provides the safety function. A failure modes and effects analysis is provided in Table 9.4-5.In the event of a failure of the electric heating coil in one emergency filter train, the affected filter train will be automatically shutdown. The redundant filter train will continue to operate. The automatic stoppage of the affected filter train prevents de-adsorption from the charcoal filter caused by excessive entering air humidity.

WSES-FSAR-UNIT-39.4-8Revision 12-A (01/03)

The analysis of a fuel handling accident is discussed in Chapter 15.

9.4.2.4 Inspection and Testing Requirements(DRN 02-1753, R12-A)Each component is inspected prior to installation. Components are accessible for periodic inspection during normal plant operation. A system air balance test and adjustment to design conditions is conducted in the

course of the plant preoperational test program. Instruments are calibrated during testing. Automatic controls are tested for actuation at the proper set points and alarm functions are checked for operability and limits during preoperational testing.(DRN 02-1753, R12-A) 9.4.3REACTOR AUXILIARY BUILDING VENTILATION SYSTEM 9.4.3.1 Reactor Auxiliary Building (RAB) Normal Ventilation System 9.4.3.1.1 Design BasesThe RAB Normal Ventilation System is designed to meet the following requirements:

a)maintain a suitable operating environment for all equipment and personnel during normal operation (refer to Table 9.4-1),b)maintain air flow from areas of low potential radioactivity to areas of progressively higher potential radioactivity,c)limit concentrations of airborne radioactivity by circulating sufficient volumes of purging air,d)minimize airborne fission product releases from the building exhaust during normal operation, e)monitor ventilation system discharge to detect and prevent excessive release of airborne radioactivity,(DRN00-691, R11-A)f)provide means for filtering containment purge air, g)permit periodic inspection and testing of system components, and(DRN00-691, R11-A)h)automatic shutdown upon a toxic chemical event.

The RAB Normal Ventilation System is not required to operate following a design basis accident and therefore is not designed to safety or seismic requirements.9.4.3.1.2S ystem Description(DRN02-220, R11-A)The RAB Normal Ventilation System air flow diagram is shown in Figure 9.4-3 (for Figure 9.4-3, Sheet 5, refer to Drawing G853, Sheet 19) and principal component data are presented in Table 9.4-6. The ventilation supply system includes an outside air louver, medium efficiency bag type filter, electric heating coil, two 100 percent capacity centrifugal fans (S-6), gravity discharge dampers and chilled water cooling coil located in the common discharge duct of fans S-6. Supply air is discharged through a sheet metal duct distribution system throughout the Reactor Auxiliary Building. The flow of air throughout the building is from areas of low potential radioactivity to areas of progressively higher potential radioactivity.(DRN02-220, R11-A)

WSES-FSAR-UNIT-3 9.4-9 Revision 11-A (02/02)(DRN 02-220)(DRN 02-220)Air is exhausted from the Reactor Auxiliary Building spaces through a ventilation exhaust system. The ventilation exhaust system includes a medium efficiency prefilter, HEPA filter, charcoal adsorber, fan inletvane dampers, two 100 percent capacity centrifugal fans (E-22) and discharge dampers to prevent air recirculation through the standby fan. The ventilation exhaust system discharges to the plant stack. The exhaust fan inlet vane dampers automatically adjust air flow from the minimum flow rate during the Reactor

Auxiliary Building "ventilation only" mode to the maximum flow rate for the Reactor Auxiliary Building ventilation and the Reactor Building "purge combined" mode. The maximum flow occurs only during containment purge (refer to Subsection 9.4.5 for a detailed description of containment purge exhaust

system).Air flow monitors in the discharge duct of exhaust fans maintain the design air flow rate through thenonsafety related filtration unit. Low air flow and failure of the supply fan are alarmed in the main control room. The operating supply fan is automatically stopped if the exhaust fan fails, but the operating exhaust fan continues to operate if the supply fan fails. Individual filter pressure drops are alarmed in the main

control room through the plant monitoring computer.The chemical monitors, as described in Subsection 6.4.4.2, are interlocked with the Normal RAB ventilation(E22) exhaust fans, to shut down the RAB Normal Ventilation System upon this type of event. The trip logic is a 1 out of 2 scheme, which allows either monitor to trip the operating fan. This interlock automatically trips the operating (E22) exhaust fan. When the exhaust fan is tripped, the supply air (S6) fan trips, and the intake/exhaust dampers close. The Operator has the option of re-starting the fans, after a trip, using the "over-ride" feature of the circuit design. If the Operator selects this "over-ride" feature, with the trip present, this condition will be alarmed in the Control Room to the Operator.Regulatory Guide 1.140 was not a design criterion for Waterford 3. Table 9.4-21 is a comparison of the Waterford 3 Normal Ventilation Exhaust System Air Filtration and Adsorption Unit with regulatory positions

of Regulatory Guide 1.140 (March 1978).The criteria established for the changeout of prefilters, HEPA filters and charcoal in the charcoal adsorber section of the RAB Normal Ventilation Exhaust System air cleaning unit is based on "Normal Operation" of the plant. It is described individually for each filter bank and the charcoal adsorber as follows:a)Prefilters Prefilter initial pressure drop (clean) is 0.65 inches W.G. or less. The prefilters will be changed before the pressure drop reaches 2.0 inches W.G.b)HEPA FiltersHEPA filter initial pressure drop (clean) will be 1.0 inches W.G. The HEPA filters will be changedbefore the pressure drop reaches 4.0 inches W.G. The system will be retested for leak integrity

when new HEPA filters are installed or the old filters are disturbed.c)CharcoalAdsorber(DRN 00-691)Thechangeout of activated carbon in the adsorber will be determined from periodic laboratorytesting of samples which are removed from a test canister located on the air cleaning unit. This test

canister is one of a set of six standard test canisters.(DRN 00-691)

WSES-FSAR-UNIT-39.4-10Revision 12-B (04/03)

At prescribed intervals, a test canister will be removed and placed in a polyethylene bag in the same orientation as it was on the High Efficiency Charcoal Adsorber (HECA). A blank will be

installed in its place.Carbon adsorber differential pressure should remain constant over cell life at approximately 1.8 inches W.G. Replace carbon depending on results of checking test canisters.

The system will be retested for leak integrity when new carbon is installed.

9.4.3.1.3 Safety EvaluationThe RAB Normal Ventilation System is not safety related and consequently is not designed to seismic Category I requirements since its operation is not required to mitigate the consequences of an accident or to shutdown the reactor and maintain it in a safe shutdown condition. A failure of any component of the RAB

Normal Ventilation System following a design basis accident will not have any adverse effect on safety

related components or systems.

Subsequent to a design basis accident, the safety injection actuation signal will shutdown the RAB Normal Ventilation System supply and exhaust fan, isolate the normal ventilation paths to the controlled areas (eg, shutdown heat exchangers or safeguard pump rooms), and activate the safety related Controlled Ventilation

Area System which will operate to exhaust air from these areas (refer to Subsection 6.5.1).(DRN 02-1623, R12-B)Rupture in the chilled water piping will not cause any jet impingement or floodi ng of other pieces of equipment since the lines have low stress levels, which are below the criteria for postulated moderate

energy cracks.(DRN 02-1623, R12-B)

Fire detection and protection for the charcoal adsorbers is discussed in Subsection 9.5.1.

Duct penetrations to equipment cells are carefully designed for radiation shine geometry to prevent impingement of direct radiation on personnel.Radiation monitors are provided in the RAB Normal Ventilation System to monitor airborne radioactivity contamination in the general areas of the RAB. Subsection 12.3.4 provides a discussion of the radiation monitoring provided.

9.4.3.1.4 Inspection and Testing RequirementsEach component is inspected prior to installation. Components are accessible for periodic inspection. A system air balance test and adjustment to design conditions is conducted in the course of the plant preoperational test program. Instruments are calibrated, automatic controls are tested for actuation at the

proper setpoints, and alarm functions are checked for operability and limits during preoperational testing.

WSES-FSAR-UNIT-39.4-11Revision 10 (10/99)Each system is operated and tested initially with regard to flow paths, flow capacity, and mechanicaloperability. Ductwork is tested for leakage during installation.The ventilation exhaust unit is tested in place for casing leaks, air-aerosol mixing uniformity for HEPAfilter, leakage of HEPA filter banks, and a performance leakage test of the charcoal adsorber. Periodictesting for filters and adsorber will be performed after initial operation.9.4.3.2Personnel and Decontamination Areas Ventilation System9.4.3.2.1Design BasesThe Personnel and Decontamination Areas Ventilation System is designed to meet the followingrequirements:a)maintain a suitable operating environment to assure comfort of personnel as well as provide asuitable environment for equipment and controls (refer to Table 9.4-1), andb)permit accessibility for adjustments, tests and inspections to assure continued functional reliability.

The Personnel and Decontamination Areas Ventilation System is not required to operate following adesign basis accident and therefore is not designed to safety or seismic requirements.9.4.3.2.2System DescriptionThe Personnel and Decontamination Areas Ventilation System air flow diagram is shown in Figure 9.4-3(for Figure 9.4-3, Sheet 5, refer to Drawing G853, Sheet 19) and principal system component design data are given in Table 9.4-7.The supply air system consists of two air handling units, AH-6 and AH-8, both handling 100 percentoutside air. Each unit includes an inlet pneumatic damper, medium efficiency filter, electric heating coil, chilled water cooling coil and centrifugal fan. Air handler AH-6 supplies air to the health physics work area, instrument repair shop, counting room, office, sample laboratory, and radio-chemistry laboratory. Air handler AH-8 supplies air to the men's locker room, general storage area, health physics room, corridor and foyer, decontamination and control access area, women's restroom, first aid room and laundry room.

All these areas are on elevation -4 ft. MSL. Air is exhausted through the RAB Normal Ventilation System, described in Subsection 9.4.3.1.Electric reheat coils, controlled by room thermostats, are located in the supply branches for final control ofspace temperatures.9.4.3.2.3Safety Evaluation The Personnel and Decontamination Areas Ventilation System is not safety related and is not designed toseismic Category I requirements since it's operation is not required to mitigate the consequences of an accident or shutdown the reactor and maintain it in a safe shutdown condition. A failure of any component of the Personnel and Decontamination Areas Ventilation System following s design basis accident will nothave any effect on safety related components or systems.

WSES-FSAR-UNIT-39.4-12Revision 10 (10/99)9.4.3.2.4Inspection and Testing RequirementsEach component is inspected prior to installation. Components are accessible for periodic inspection.

Air system air balance test and adjustment to design conditions are conducted in the course of the plantpreoperational test programs. Instruments are calibrated, automatic controls are tested for actuation atthe proper setpoints, and alarm functions are checked for operability and limits during preoperational testing.Each system is operated and tested initially with regard to flow paths, flow capacity, and mechanical operability.Ductwork is tested for leakage during installation.9.4.3.3Emergency Diesel Generator Ventilation System 9.4.3.3.1Design Basis The Emergency Diesel Generator Ventilation System is designed to meet the following requirements:a)maintain the temperature in the diesel generator rooms at a maximum of 120

° F whenever thediesel generators are in operation,b)provide redundant trains A and B powered by separate safety buses such that failure of a singleactive component cannot result in a complete loss of any engineered safety feature system function,c)remain functional during and after a safe shutdown earthquake, andd)permit periodic testing and inspection of principal components.

The Emergency Diesel Generator Ventilation System is designed to safety class 3 and seismic Category Irequirements.9.4.3.3.2System DescriptionThe Emergency Diesel Generator Ventilation System is shown in Figure 9.4-3 (for Figure 9.4-3, Sheet 5,refer to Drawing G853, Sheet 19). Principal component design data are presented in Table 9.4-8. Each diesel generator room is provided with an axial flow exhaust fan E-28 (3A-SA) and E-28 (3B-SB) serving Generator Room A and B respectively. Each fan flow is controlled by automatically adjusting the fan bladepitch in response to its respective room temperature sensor. Each fan is provided with a start-auto-stopswitch. With the switch in the automatic position, start-up of the diesel generator automatically initiates start-up of the respective fan and opens its respective outside air intake dampers, LD-2(SA) and D-7(SB).

WSES-FSAR-UNIT-3 9.4-13 Revision 308 (11/14)

During normal operation, when the diesel generators ar e not operating, the diesel generator rooms are maintained within the environmental conditions stated in Table 9.4-1 by ventilation supplied from the RAB Normal Ventilation System (re fer to Subsection 9.4.3.1).

The control room operator is provided with safety related indication on the operation of each exhaust fan as well as a safety related indicator for diesel generat or room temperature with a high-low safety alarm. (LBDCR 14-011, R308)

There is also non-safety related indication in the control room of each exhaus t fan's operation that is provided on the Plant Monitoring Computer (PMC). T he PMC provides the stat us of each exhaust fan's flow against a low differential pressure setpoint that can be used to assist in evaluating fan operation.

There is also a differential pressure indicator that can be read locally. (LBDCR 14-011, R308) 9.4.3.3.3 Safety Evaluation

The Emergency Diesel Generator Ventilation System is designed to safety class 3 and seismic Category I requirements. In the event of loss of offsite power, each system is power ed from its respective emergency diesel generator.

A single active failure in the ventilation system can affect only one of the two diesel generators.

Therefore one diesel generator is available to mi tigate the consequences of a design basis accident and to provide safe plant shutdown.

The use of storm type louvers limits entry of rain to the building.

Missile barriers are provided at all outdoor air intakes and exhausts to absorb the possi ble impact of missiles generated by tornados. The damper linkages and operators are located in side the Reactor Auxiliary Building.

9.4.3.3.4 Inspection and Testing Requirements

Each component is inspected prior to installation.

Components are accessible for periodic inspection.

A system air balance test and adjustment to design c onditions are conducted in the course of the plant preoperational test program. Automatic controls are tested for actuation at proper set points. Alarm functions are checked for operability and limits during preoperational testing.

Each train is operated and tested initially with r egard to flow paths, flow capacity and mechanical operability. During installation, ductwork is tested for leakage.

9.4.3.4 RAB H & V Equipment Room Ventilation System

9.4.3.4.1 Design Basis

The RAB H & V Equipment Room Ventilation System is designed to satisfy the following requirements:

a) maintain suitable temperatures for all equipment in the RAB H & V equipment room at elevation

+46 ft. MSL during normal (refer to T able 9.4-1) or accident conditions, b) remain functional during and after a safe shutdown earthquake,

WSES-FSAR-UNIT-3 9.4-14 Revision 306 (05/12) c) provide redundant trains A and B, powered by separ ate safety buses, such that a single active component failure cannot result in a complete loss of any engineered sa fety feature system function, and d) permit periodic testing and inspection of principal components.

The RAB H & V Equipment Room Ventilation System is designed to safety class 3 and seismic Category I requirements. (EC-17580, R306)

The security equipment air conditioning and hydrogen detection systems are classified as non-safety-related and do not perform any safety-related functions.

(EC-17580, R306) 9.4.3.4.2 System Description

The RAB H & V Equipment Room Ventilation System air flow diagram is shown in Figure 9.4-3 (for Figure 9.4-3, Sheet 5, refer to Drawing G853, Sheet

19) and principal component design data represented in Table 9.4-9. The system is located on elevation +46 ft. MSL.

The supply system consists of tw o 100 percent capacity air handling units , AH-13. Each unit includes a throw away filter, electric heating coil and centrifugal fan. The supply air is discharged through a sheet metal duct distribution system.

Air is exhausted directly from the RAB H & V Equipm ent Room by two 100 percent capacity exhaust fans E-

41. Each fan discharge duct contains a gravity damper to prevent air recirculat ion through the standby fan. (EC-17580, R306)

A dedicated split air conditioning system is provided for Security Uninterruptible Power Station, distribution equipment, and batteries to maintain the ba ttery room ambient temperature within a specified operating range. A hydrogen detection system will alarm when the accumulation of hydrogen reaches 2% room volume during battery charging operation. The system is located in the H&V Fan Room on elevation +21 ft. (EC-17580, R306) 9.4.3.4.2.1 Normal Operation A three-position (run-auto-stop) contro l switch for each supply fan, AH-13, is provided in the main control room. The operator will select which supply fan w ill be the lead unit and which is to be the lag unit (lead unit control switch in "run" position, lag unit control sw itch in "automatic" position). The lag supply fan will automatically start, in response to room temperature conditions. If the lead selection is not determined using the control switches, both suppl y fans will act as lag fans and st art when the room air temperature reaches 100 F.

Two position automatic control of dampers is used to maintain room temperature. When the room air temperature rises to 90 F, the outside air intake dampers (LD-1) and (D-2) for both air handling units are fully open and the return dampers (D-1) are fully closed. When the temperature reaches 80 F, the return dampers (D-1) are fully open and the outside intake dampers (LD-1) and (D-2) are fully closed.

The room temperature is measured at eight locati ons, four each for train A and B, and the average is used to control- the RAB H & V Equipment Room Vent ilation System. This instrumentation is designed to Class 1E requirements.

When the room air temperature rises to 90 F, the dampers are positioned as described above and the lead exhaust fan E-41 starts. When the room temperature reaches 100 F, the lag supply and exhaust fans are started. With both trains are r unning and the room air temperature drops to 90 F, the lag supply and exhaust fans are deenergized. As the room air temperature continues to drop to 80 F, the lead exhaust air fan is deenergized. At 80 F, the outside air intake dampers for both units are fully closed and the recirculation air dampers are fully opened. As the temperature drops to 50 F, the first stage of the electric heating WSES-FSAR-UNIT-3 9.4-15 Revision 306 (05/12) coil is energized. If the temperature continues to fall to 45 F the second stage of the electric heating coil is energized. Both stages of the electric heating coils remain energized until the room air temperature reaches 55 F. (EC-17580, R306)

The security equipment air conditioni ng system operates to maintain a design temperature of 77 F. The hydrogen detection system alarms when the hydrogen concentration reac hes 2% of the room volume. (EC-17580, R306) 9.4.3.4.2.2 Emergency Operation

During a design basis accident, a safety injection ac tuation signal will start both supply air fans. The control room operator can place one s upply fan on standby by stopping one fan.

The exhaust air fans will start in the same m anner as described in Subsection 9.4.3.4.2.1.

The electric heating coils are not powered from the emergency diesel generators.

if offsite power is available, the control system will activate the electr ic heating coil if the room temperature indicates the need for heating.

The control room operator is provided with safety related high-low average room temperature alarms.

Safety related status indication is provided for eac h supply and exhaust fan. Damper position indication is available to the control room operator via computer.

9.4.3.4.3 Safety Evaluation

The RAB H & V Equipment Room Ventilation System is designed to safety class 3 and seismic Category I requirements. A single active failure will not pr event the system from v entilating the H & V equipment room. Each redundant air handling unit and exhaust fan is powered from separate safety power sources.

The outside air intake louvers and t he exhaust louvers are designed to prevent rain from entering and are protected to withstand the effects of tornado generated missiles. The fan casings are of sufficient

thickness to provide protection from inte rnally generated missiles penetrating the casing.

9.4.3.4.4 Inspection and Testing Requirements

Each component is inspected prior to installation.

Components are accessible for periodic inspection.

A system air balance test and adjustment to design c onditions are conducted in the course of the plant preoperational test program. Automatic controls are tested for actuation at proper set points, and annunciation functions are checked for operabilit y and limits during preoperational testing.

Each train is operated and tested initially with r egard to flow rates, flow capacity and mechanical operability. Ductwork is tested for leakage during installation.

WSES-FSAR-UNIT-39.4-169.4.3.5RAB Cable Vault and Switchgear Areas Ventilation System9.4.3.5.1Design BasisThe RAB Cable Vault and Switchgear Areas Ventilation System is designed to satisfy the followingrequirements:a)maintain suitable operating environment for all electrical equipment during normal (refer to Table9.4-1) and accident conditions,b)prevent the accumulation of a combustible concentration of hydrogen in the battery rooms duringnormal and accident conditions,c)remain functional during and after a safe shutdown earthquake,d)provide redundant trains A and B powered by separate safety buses such that a failure of a singleactive component cannot result in a complete loss of any engineered safety feature system functions,e)provide smoke purge in the electrical areas, andf)permit periodic testing and inspection of principal components.

Those components of the RAB Cable Vault and Switchgear Areas Ventilation System that are needed tomitigate the consequences of a design basis accident or to bring the plant to a safe shutdown condition are designed to safety class 3 and seismic Category I requirements. These components are listed in Table 3.2-1.9.4.3.5.2System DescriptionThe RAB Cable Vault and Switchgear Areas Ventilation System air flow diagram is shown on Figure 9.4-4and design data for principal components are shown in Table 9.4-10. The cooling part of the RAB Cable Vault and Switchgear Areas Ventilation System is made up of two separate air handling subsystems, one comprised of two 100 percent capacity air handling units AH-25 located in an H&V room on elevation +46 ft. MSL and the other comprised of two 100 percent capacity air handling units AH-30 located in the H&V room on elevation +7 ft. MSL. The remainder of the RAB Cable Vault and Switchgear Areas Ventilation System consists of two 100 percent capacity safety-related battery room exhaust fans E-29, E-30, E-31 and E-46 for each battery room, two non-safety-related exhaust fans for smoke purging, E-48 and E-50, one exhaust fan E-49 used during normal operation and smoke purging and two 100 percent capacity safety-related H&V room (elevation +69 ft. MSL) ventilation fans E-52.Each air handling unit AH-25 and AH-30 consists of a medium efficiency filter. chilled water cooling coiland centrifugal fan. Additionally, the AH-25 units each have an electric heating coil.

WSES-FSAR-UNIT-39.4-17Revision 7 (10/94)9.4.3.5.2.1Normal OperationDuring normal operation, the control room operator sets the mode selection switch to its normal modeposition which positions the dampers and starts one supply unit AH-25. The associated recirculation dampers D-48 and D-49 are fully open the outside air intake dampers D-65 are positioned partially open admitting outside air and the inlet damper D-8 is fully open. The control room operator then starts exhaust fan E-49. The operator will start one recirculation air handling unit AH-30. Electric heating coils will not operate unless air flow is established in the discharge duct of the supply unit AH-25.To eliminate the possibility of hydrogen accumulation, one battery room exhaust fan will be manuallystarted for each battery room.For each AH-25 unit, two safety-related thermocouples are provided in the switchgear area and onesafety-related thermocouple is provided in each of Relay Rooms 'A' and 'B'. The highest temperature ofthe four thermocouples will position the electric motor operated chilled water control valve at the cooling coil. The lowest temperature of the four thermocouples will control the operation of the electric heating coil. Four safety-related thermocouples are provided in the switchgear area for each AH-30 unit. Thehighest temperature will position the electric motor operated chilled water control valve for the cooling coil.A thermostat, sensing the lowest temperature across the upstream face of the AH-25 cooling coil will tripthe unit fan to prevent the coil from freezing.The exhaust fans (E-52) are automatically controlled by the temperature in the H&V room at elevation +69ft. MSL. Fan E-52 (train A) will start automatically if the room temperature is at or above 90

° F and one ofthe train A battery room exhaust fans is running, and will stop when the temperature falls to 70

° F. Fan E-52 (train B) will operate similarly if one of the train B battery room exhaust fans is running.Starting exhaust fan E-49 will automatically position dampers D-60 and D-61B to exhaust air from theelectrical penetration area and relay room provided that local panel damper switches are in their "auto" position. Non-safety electric reheat coils provided in various locations are controlled from individual room thermostats.9.4.3.5.2.2Smoke Exhaust OperationIn order to purge smoke from any of these electrical areas, the outside air intake dampers D-65 will beopened fully and recirculation dampers D-48 and D-49 will be closed fully. Air handling unit AH-25 willdraw 100 percent outside air and discharge it into each area. E-48 will be started to remove smoke from switchgear AB area (elevation +21 ft. MSL). Smoke will be purged by E-49 from either the electrical penetration area, the cable vault or the relay room by opening dampers D-60, D-61A or D-61B, respectively.Smoke will be purged by E-50 from the penetration area by opening dampers D-58 and D-59. The SmokePurge Operation overrides the normal freeze protection by opening the outside air intake dampers D-65 and chilled water temperature control valve 3AC-TM 188A or 3AC-TM 189B irrespective of the outside air temperature.

WSES-FSAR-UNIT-3 9.4-18 Revision 15 (03/07) 9.4.3.5.2.3 Emergency Operation

After a design basis accident, a safety injection actuation signal will position the outside air intake dampers D-65 to their normal partially opened position, if not already in that position. This will admit outside air to the air handling units AH-25. The signal will start both air handling units AH-25, which will open both dampers D-8. If one air handling unit AH-25 is placed on standby, it will start automatically in response to switchgear area high temperature. A controller, sensing highest room temperature, will position the motor operated chilled water control valve.

A safety injection actuation signal will start both AH-30 units. The operator can place one on standby

which will be automatically started in response to switchgear area high temperature. A controller, sensing highest room temperature, will position the motor operated chilled water control valve.

A safety injection actuation signal starts all battery room exhaust fans. The control room operator can place one fan for each room on standby. If the battery room exhaust fans are operating and the H&V room temperature is 90 F or higher, the exhaust fans E-52 will start.

Exhaust fan E-49 is not required post-accident. An SIAS will trip the fan E-49 and the dampers D-60 and D-61B will close provided that their respective damper control switches are in the "auto" position.

Damper D-61A has manual controls only.

The control room operator is provided with the following safety-related alarms:

a) high switchgear area temperature, and

(DRN 03-1988, R15) b) high-low battery fan room temperature. (DRN 03-1988, R15)

The following safety related indication is provided in the main control room:

a) position of outside air intake damper D-65

b) status of battery room exhaust fans (E-29, E-30, E-31, E-46),

c) status of air handling units AH-30,

d) status of air handling units AH-25, and

e) status of exhaust fan E-52.

9.4-3-5.3 Safety Evaluation The RAB Cable Vault and Switchgear Areas Ventilation System is required to operate during normal, smoke and accident conditions. The components of the RAB Cable Vault and Switchgear Areas Ventilation System that are required during and following an accident condition are designed to safety class 3 and seismic Category I requirement. Each safety related redundant train is powered from separate safety power sources. Therefore a single active failure will not prevent this system from

mitigating the consequences of a design basis WSES-FSAR-UNIT-3 9.4-19accident or prevent the plant from safely shutting down. A failure mode and effects analysis is provided inTable 9.4-11.Following a design basis accident, the air handling units are on a recirculation mode. Dampers D-58, D-59, D-60 and D-61B are all designed to close and exhaust fans E-48, E-49, and E-50 are not required to operate post accident. The electric reheat coils are not required during or after an accident and are not safety related but are seismically qualified.Battery room ventilation is required during normal and accident conditions to avoid the buildup ofhydrogen. Each battery room is provided with redundant safety related exhaust fans.All intake and exhaust louvers are designed to prevent rain from entering and are protected to withstandthe effects of tornado generated missiles. The fan casings are of sufficient thickness to prevent internallygenerated missiles from penetrating the casing.9.4.3.5.4Inspection and Testing RequirementsEach component is inspected prior to installation. Components of each system are accessible for periodicinspection.A system air balance test and adjustment to design conditions are conducted in the course of the plantpreoperational test program. Instruments are calibrated, automatic controls are tested for actuation at theproper set points and alarms functions are checked for operability and limits during preoperational testing.Each system is operated and tested initially with regard to flow paths, flow capacity, and mechanicaloperability. Ductwork is tested for leakage during installation.9.4.3.6RAB Hot Machine Shop and Decontamination Area Ventilation System9.4.3.6.1Design Bases The RAB Hot Machine Shop and Decontamination Area Ventilation System is designed to:

a)maintain a suitable operating environment for personnel in the hot machine shop anddecontamination area (refer to Table 9.4-1),b)maintain airflow from areas of low potential radioactivity to areas of progressively higher potentialradioactivity, where applicable,c)limit concentrations of airborne radioactivity by exhausting the decontamination room over theultrasonic cleaning tanks (to capture rising vapor and droplets which could carry radioactiveparticulates) and by exchanging the hot machine shop through hoods located at the point of machine tool operation (to capture dust, generated by the machining processes, which could carryor be radioactively contaminated),d)minimize normal airborne fission product releases by high efficiency particulate filtration of areaexhausts, and WSES-FSAR-UNIT-3 9.4-20e)permit periodic inspection and testing of system components.The RAB Hot Machine Shop and Decontamination Area Ventilation System is not required to mitigate theconsequences of a design basis accident or provide safe shutdown for the reactor. Therefore the system is nonsafety and nonseismic.9.4.3.6.2System Description The RAB Hot Machine Shop and Decontamination Area Ventilation System airflow diagram is shown inFigure 9.4-5 and principal component design data are presented in Table 9.4-12. The system is a single pass type and consists of a ventilation supply system and a filtered exhaust system. The ventilation supply system includes two supply air handling units, one supplying the hot machine shop (AH-33) and theother the decontamination room (AH-32).The hot machine shop air handling unit, AH-33, has a medium efficiency filter, electric heating coil, chilledwater cooling coil and centrifugal fan. The air handling unit supplying the decontamination room, AH-32, has a medium efficiency filter, electric heating coil, chilled water cooling coil and centrifugal fan.Pneumatic operated dampers D-52 and D-53 at the intake of the air handling units isolate the units during filter replacement.The exhaust air handling units AH-34 and AH-35 exhaust air from the decontamination room and hotmachine shop, respectively. Each contains a medium efficiency filter, HEPA filter and centrifugal fanwhich discharges through a pneumatically operated damper and louver. Bird screens are provided on alllouvers. Exhaust from the spray wash booth in the decontamination room passes through a demister before entering the exhaust system ductwork.9.4.3.6.3Safety Evaluation The RAB Hot Machine Shop and Decontamination Area Ventilation System is not safety-related and is notdesigned to seismic Category I requirements since its operation is not required to prevent or mitigate the consequences of a design basis accident or provide the capability to shutdown the reactor.All intake and discharge louvers are designed to prevent rain from entering the room and are missileprotected.9.4.3.6.4Inspection and Testing Requirements Preoperational tests are performed on the system to ensure that it is capable of meeting its performanceand design basis requirements. All automatic and manual sequences are tested to ensure proper operation. Components are accessible for periodic inspection.

WSES-FSAR-UNIT-39.4-21Revision 11 (05/01)9.4.3.7RAB Air Conditioning System9.4.3.7.1Design BasesThe RAB Air Conditioning System is designed to:(DRN 99-2476)a)maintain a suitable operating environment for all equipment and personnel in the electrical area,Administrative Area and I&C room on elevation +7 ft. MSL during normal operation (refer to Table 9.4-1), and(DRN 99-2476)b)permit periodic inspection and testing of system components.The RAB Air Conditioning System is not required to prevent or mitigate the consequences of a designbasis accident or to provide a safe shutdown of the reactor. Therefore, the system is non-safety and nonseismic.9.4.3.7.2System DescriptionThe RAB Air Conditioning System airflow diagram is shown on Figure 9.4-3 (for Figure 9.4-3, Sheet 5,refer to Drawing G853, Sheet 19) and principal component design data are given in Table 9.4-13.Air handling unit AH-5 provides a supply of air to the electrical area and I&C room on elevation +7 ft. MSLin the Reactor Auxiliary Building. The air handling unit includes a medium efficiency filter, electric heating coil, chilled water cooling coil and centrifugal fan. The temperature inside the I&C room is maintained by a thermostat which controls electric reheat coil EHC-62.When the air handling unit AH-5 is inoperable, the operator will start the non-safety local fan cooler AH-36which will maintain space temperature inside the security room of the I&C area. The local fan cooler AH-36 can be connected to the diesel generators in the event of a loss of offsite power which causes AH-5 tobe inoperable.An exhaust fan E-47 exhausts excess air from the same spaces fed by AH-5.9.4.3.7.3Safety EvaluationThe RAB Air Conditioning System is not safety related since it is not required to prevent or mitigate theconsequences of a design basis accident or to provide a safe shutdown of the reactor.The outside air intake and exhaust louvers are designed to prevent rain from entering and are protected towithstand the effects of tornado generated missiles. The fan casings are of sufficient thickness to preventinternally generated missiles from penetrating the casing.

WSES-FSAR-UNIT-39.4-22Revision 10 (10/99)9.4.3.7.4Inspection and Testing RequirementsPreoperational tests are performed on the system to ensure that it is capable of meeting its performanceand design basis requirements. Automatic and manual sequences are tested to ensure proper operation.

Components are accessible for periodic inspection.9.4.3.8Fan Coolers9.4.3.8.1Design BasesIndividual fan coolers are located in various rooms of the Reactor Auxiliary Building. Table 9.2-16specifies the location for safety and non-safety-related fan coolers. The safety-related fan coolers are designed to:a)maintain a suitable operating environment for equipment during accident conditions (refer to Table9.4-1),b)remain functional during and after a safe shutdown earthquake,c)provide redundant trains A and B powered by separate safety buses such that a single activecomponent failure cannot result in a complete loss of any engineered safety feature systemfunction, andd)permit periodic testing and inspection of principal components.The non-safety fan coolers are designed to:a)maintain a suitable operating environment during normal operation (refer to Table 9.4-1), andb)permit periodic testing and inspection of principal components.Table 3.2-1 specifies the safety class and seismic Category of the fan coolers. Protection against theeffects of missiles and pipe rupture is discussed in Sections 3.5 and 3.6, respectively. Environmental design criteria and qualification of components are discussed in Section 3.11.9.4.3.8.2System DescriptionThe fan cooler locations are shown on Figures 9.4-1, 3 and 5 (for Figure 9.4-3, Sheet 5, refer to DrawingG853, Sheet 19). Component design data is presented in Table 9.4-14.The fan coolers are air handling units, each unit consisting of a fan section, cooling coil and filter. Thesafety-related cooling coils are supplied with water from the Essential Services Chilled Water System (refer to Subsection 9.2.9). The safety-related fan coolers circulate room air across the cooling coil and discharge the cooled air directly to the space being served. The safety-related fan coolers serving pump rooms are automatically started when the pumps start.

WSES-FSAR-UNIT-39.4-23Revision 9 (12/97)Each A/B pump room contains two 100 percent capacity fan coolers. If the A/B pump is energized fromsafety bus A, the A fan cooler will operate or if the A/B pump is energized from safety bus B, the B fan cooler will operate, except for the high pressure safety injection pump A/B. In this case, the high pressure safety injection pump A/B is interlocked with fan coolers AH-2 (3A-SA) and AH-2 (3C-SA) when energized from the safety A bus and AH-21 (3-SB) when energized from safety B bus. The fan coolers in the heat exchanger rooms are started by room temperature. High room temperature is annunciated (Class 1E) in the main control room.The non-safety fan coolers provide cooling during normal operation only. Chilled water is supplied by the supplemental chilled water system.9.4.3.8.3Safety EvaluationThe safety-related fan coolers are required to operate during an accident condition in order to maintain anacceptable operating environment for the engineered safety features equipment located in each area.

These fan coolers are designed to seismic Category I requirements.Where equipment on one safety channel occupies a single room, the fan cooler serving that room ispowered from the safety bus with the same designation Rooms containing equipment on both safety channels are served by fan coolers on the A safety bus and other fan coolers on the B safety bus. In both cases, where pumps are involved, the fan cooler is interlocked to start and run when the pump starts and runs. Thus, the loss of a fan cooler or coolers, on one safety channel, will only affect other safety-related equipment on the same channel.Fan coolers serving non-safety equipment are not required to mitigate the consequences of an accident or to provide safe shutdown to the reactor. Therefore, these fan coolers are not safety-related or seismically qualified.9.4.3.8.4Inspection and Testing RequirementsEach fan cooler is tested and inspected prior to installation. Components of each fan cooler areaccessible for periodic inspection.Preoperational tests are performed on the fan cooler to ensure they are capable of meeting theirperformance and design basis requirements. Automatic and manual sequences are tested to ensure proper operation.9.4.3.9Controlled Ventilation Area SystemThe Controlled Ventilation Area System is described in Subsection 6.5.1.

WSES-FSAR-UNIT-39.4-24Revision 10 (10/99)9.4.4TURBINE BUILDING VENTILATION SYSTEM9.4.4.1Design BasesThe Turbine Building Ventilation System is designed to:

a)provide a suitable operating environment for all equipment and personnel during normal operation(refer to Table 9.4-1), andb)permit periodic inspection and testing of system components.

The Turbine Building Ventilation System is not required to operate following a design basis accident andtherefore is not designed to safety or seismic requirements.9.4.4.2System DescriptionThe Turbine Building Ventilation System air flow diagram is shown on Drawing G853, Sheet 14. Theprincipal component design data are presented in Table 9.4-15.The ventilation system, except for the switchgear room described below, is a single pass type andconsists of ventilation air intake louvers and dampers, supply fans, exhaust fans, and exhaust louvers anddampers distributed about the periphery of the building on both the ground floor and the mezzanine floor.The Turbine Building switchgear room is separately ventilated by two 50 percent capacity air handlingunits, AH-15 and AH-29 which cool the space with outside air. Each air handling unit contains a mediumefficiency filter and centrifugal fan. Outside air intake for the switchgear area is automatically varied from zero air flow to the maximum system air flow by temperature control of system dampers. As the outside air intake is increased, the return air is decreased proportionately. All filters are provided with local indication of pressure drop.Electric unit heaters are provided on the ground floor and the mezzanine floor, distributed to cover allareas, so that a minimum temperature of 50

°F can be maintained.Fans are manually controlled by local switches mounted on a central HVAC control panel in the Turbine Building.9.4.4.3Safety EvaluationThe Turbine Building Ventilation System is not required to mitigate the consequences of a design basisaccident or to provide a safe shutdown of the reactor. Therefore it is not designed to safety or seismic requirements. The failure of any system component will not affect any safety related system, structure or component.

WSES-FSAR-UNIT-39.4-259.4.4.4Testing and Inspection RequirementsEach component is inspected prior to installation. Components are accessible for periodic inspection. Asystem air balance test and adjustment to design conditions are conducted in the course of the plant preoperational test program. Instruments are calibrated and automatic controls are tested for actuation during the preoperational program.9.4.5REACTOR BUILDING VENTILATION SYSTEM The following systems provide ventilation for, and control the atmosphere inside, the containment:a)Containment Cooling System,b)Airborne Radioactivity Removal System, c)Containment Atmosphere Purge System, d)Containment Atmosphere Release System, e)Containment Vacuum Relief System,f)Reactor Cavity Cooling System, and g)Control Element Drive Mechanism Cooling System.

The following systems are associated with maintaining design conditions within the annulus of the Shield Building:a)Annulus Negative Pressure System, andb)Shield Building Ventilation System.The Reactor Building ventilation systems air flow diagram is shown on Figure 9.4-7.9.4.5.1Containment Cooling SystemThe Containment Cooling System is described in detail in Subsection 6.2.2.9.4.5.2Airborne Radioactivity Removal System9.4.5.2.1Design BasesThe Airborne Radioactivity Removal System is designed to satisfy the following:

a)limit the buildup of airborne radioactivity leaking from the Reactor CoolantSystem during normal operation, andb)reduce airborne radioactivity of containment atmosphere below limits of 10CFR20 to permit access for operation, maintenance, inspection and testing inside containment during normal operation, shutdown or refueling.

WSES-FSAR-UNIT-3 9.4-26 Revision 301 (09/07)

The system is used for radioactivity removal duri ng normal operation only and serves no function for post-accident dose reduction. The system is not designed to safety or seismic requirements.

9.4.5.2.2 System Description

The system consists of two airbor ne radioactivity removal units, each consisting of a medium efficiency filter, HEPA prefilter, charcoal ads orber and centrifugal fan (E-13).

Component design data are given in Table 9.4.16.

(DRN 06-898, R15)

The airborne radioactivity removal units are operated when required to limit the buildup of airborne radioactivity leaking from the Reactor Coolant System during normal operation. The frequency of operation will depend on the concentration of particulate and gaseous activities present in the closed

containment atmosphere as measured by radiation monitors (refer to Subsection 12.3.4). Airborne radioactivity removal units are manually st arted and stopped from the main control room. (DRN 06-898, R15)

The Airborne Radioactivity Removal System is shut down automatically when the reactor coolant pump deluge system is actuated.

Filter differential pressure and charcoal adsorber temperature are monitored.

9.4.5.2.3 Safety Evaluation (EC-5000082470, R301)

The Airborne Radioactivity Removal System is not sa fety related and is not designed to seismic Category I requirements since its operation is not required to mitigate the consequences of a design basis accident or to provide safe shutdown for the reactor. A failu re of this system will have no effect on any safety related system, com ponent or structure. (EC-5000082470, R301)

9.4.5.2.4 Testing and Inspection Requirements

The airborne radioactivity removal units are factory tested to demonstr ate compliance with specification requirement.

The airborne radioactivity removal units are accessi ble during plant shutdown for periodic inspection and testing. Preoperational tests are performed to verify performance and check that the system operates as designed.

9.4.5.3 Containment Atmosphere Purge System

9.4.5.3.1 Design Bases The Containment Atmosphere Purge System is designed to reduce the level of radioactive contamination in the containment atmosphere below the limits of 10CFR20 so as to permit personnel access to the containment.

The Containment Atmosphere Purge System is nons afety and nonseismic, except for the containment penetrations and isolation valves (saf ety class 2, seismic Category I).

WSES-FSAR-UNIT-3 9.4-279.4.5.3.2System DescriptionThe Containment Atmosphere Purge System consists of a containment purge air makeup unit and acontainment purge exhaust which is connected to the exhaust portion of the RAB Normal Ventilation System (refer to Subsection 9.4.3.1). Component design date are given in Table 9.4-17.Makeup air enters through a louvered damper LD-39 and passes through a medium efficiency filter and anelectric heating coil, EHC-50, all located in a casing installed at elevation +46 ft. MSL of the ReactorAuxiliary Building. The makeup air flows in series through pneumatic operator actuated butterfly valves2HV-B15OB, 2HV-B151A and 2HV-B152A to enter the containment.There are two modes of operation, the "Purge" mode and the "Refueling Ventilation" mode. The controlswitch is located in the main control room. Actuation of either mode positions valves and dampers.For both modes of operation the air is filtered for removal of any radioactive particulates and radioiodinesbefore being exhausted by RAB Normal Ventilation System exhaust fans E-22 to the stack.Area radiation monitors and airborne radiation monitors (as discussed in Subsection 11.5 and 12.3.4)located inside the containment and at the plant stack will generate a Containment Purge Isolation Signal (CPIS) upon detection of radioactivity above their setpoint. The setpoint for area radiation monitors and airborne radiation monitors inside containment, varies with background radiation levels. The plant stack ODCM determines the monitor setpoint. The CPIS closes the containment purge isolation valves regardless of plant operating mode. Note, in Technical Specification Mode 5, only the plant stack monitor generates a CPIS preventing out-of-limits releases. This action will prevent release of containment air which contains an unacceptable level of radioactivity. The purge isolation valves are permitted to open when the radioactivity being monitored falls to an acceptable level. This acceptable level is achieved by manually starting the Airborne Radioactivity Removal System to provide air cleaning for reduction of airborne radioactivity. The isolation valves will also close upon receipt of a Containment Isolation Actuation Signal (CIAS). Discussions of the CIAS and CPIS are provided in Subsections 7.3.1.1.4 and 7.6.1.5, respectively.The containment purge isolation valves are butterfly valves which are leaktight at maximum containmentinternal design pressure. This permits the space between the isolation valves to be pressurized toascertain continued leaktightness. The shaft seals for all purge isolation valves consist of a double seal with a leak test space between the seals which can be pressurized for testing shaft seal leakage. To provide operability assurance the valve's most highly stressed component, i.e. shaft, was analyzed considering concurrent DBA and SSE loads. Also considered in the analysis was the containment pressure vs. valve position relationship throughout the closing mode. The resulting stresses in the shaft permit a maximum valve open position of 52 degrees. The maximum valve open position therefore, is limited to 52 degrees by mechanical stops.

WSES-FSAR-UNIT-3 9.4-28The exhaust portion of the RAB Normal Ventilation System operates in the refueling ventilation modeduring refueling operations to ventilate the refueling pool inside the containment and simultaneously provide some purging of the containment atmosphere.Figure 6.2-39 shows the ductwork arrangement for the refueling pool sweep system inside containment.Pool sweep supply air flows from containment purge makeup duct at centerline Elevation + 52.5 ft. MSL and then sweeps over the pool surface before entering the exhaust inlet ducts.Each mode of operation is discussed separately as follows:Purge ModeWhen the control switch is in the "purge" position, damper D-22 remains in the fully opened position. Thepurge isolation exhaust butterfly valves 2HV-B153B, 2HV-B154B and 2HV-B155A will go to their open positions. With the exhaust isolation valves and damper D-22 in the open position, their individual limitswitches permit damper controls of the exhaust portion of the RAB Normal Ventilation System to beenergized.Inlet dampers D-32, D-33, D-34 actuate to partially closed positions and the discharge damper D-5remains in a full open position. The inlet vane damper D-4 of the operating exhaust fan E-22 modulates open to obtain full capacity purge flow. When a containment vacuum is reached and the control switch is in the "purge" mode, pressure differential transmitters will cause the purge makeup isolate butterfly valves 2HV-B150B, 2HV-B151A and 2HV-B152A and louver damper LD-39 to go to their open positions. The purging of the containment continues with damper D-23, on the exhaust branch duct from the refueling pool, fully closed."Refueling Ventilation" ModeWhen the selector control switch is placed in its "Refueling Ventilation" position, dampers D-22 and D-23are repositioned and all other components, valves and dampers act in the same function as that required in the "purge" mode. The damper D-22 actuates to a partially closed-position and damper D-23 actuatesto a fully open position. Approximately 10,000 cfm will be exhausted from the refueling pool area inside the containment, and the balance of the airflow through damper D-22 is used to purge the containment.The interface between refueling airflow and containment purge air flow occurs inside the containment inseismic Category I ductwork after the air streams pass through dampers D-22 and D-23 to the isolationbutterfly valve ZHV-B153B.The Containment Atmosphere Purge System is not operated following an accident.

Sheet metal air ducts are constructed of galvanized steel. Ducts embedded in concrete are eithergalvanized steel or stainless steel.

WSES-FSAR-UNIT-39.4-29 Revision 14-A (03/06)9.4.5.3.3 Safety Evaluation The Containment Atmosphere Purge System is not a safety related system and will not be required to operate following a design basis accident. However, it is required for purging the containment to allow required access time for plant personnel during inspection, refueling and maintenance operations. Isolation valves and containment penetrations are designed to safety class 2 and seismic Category I requirements. The isolated valves are designed to fail closed upon loss of instrument air. 9.4.5.3.4 Testing and Inspection Requirements Each component of the Containment Atmosphere Purge System is inspected prior to installation.

Components are accessible for periodic inspection during plant shutdown. Preoperational tests are

performed on the system to ensure meeting performance and design basis requirements. Automatic and

manual sequences are tested to ensure proper operation. 9.4.5.4 Containment Atmosphere Release System For a detailed discussion of the Containment Atmosphere Release System, see Subsection 6.2.5. 9.4.5.5 Containment Vacuum Relief SystemThe Containment Vacuum Relief System is described as part of the containment functional design in Subsection 3.8.2.3. 9.4.5.6 Reactor Cavity Cooling System9.4.5.6.1 Design Bases (DRN 05-1480, R14-A)The Reactor Cavity Cooling System is designed to ventilate the annular space between the reactor vessel and the concrete primary shield wall to maintain the ambient steady state air temperature from

exceeding the maximum design basis air temperature of the reactor cavity during normal operations. The system is not safety related, but the fans and portions of the ductwork are designed to seismic Category I

requirements.(DRN 05-1480, R14-A)9.4.5.6.2 System Description The Reactor Cavity Cooling System consists of two 100 percent capacity axial supply fans (S-2) arranged in parallel and connected to a common supply duct. Fan design data are provided in Table 9.4.18. Each fan is provided with a supply discharge gravity damper to prevent recirculation through the standby fan.

Each axial supply fan draws cooled air from the Containment Cooling System ring header. The fans supply air to ventilate the annular space between the reactor vessel and primary shield wall. The cooling provided by the Reactor Cavity Cooling System minimizes the possibility of concrete dehydration and subsequent faulting. The system limits thermal growth of the reactor vessel supporting steelwork.

WSES-FSAR-UNIT-3 9.4-30 Revision 307 (07/13)

System redundancy is provided to assure continuity and reliability of operation. Each fan is powered from separate safety buses. If there is a loss of offs ite power, the fans are tripped and can be loaded manually onto the safety buses.

The control room operator selects the operation of either fan. If air flow is not maintained after a time delay the other fan will automatically start. The r eactor cavity temperature is recorded on CP-18, the HVAC control panel located in the main control room, and a high cavity temperature is anunciated.

9,4.5.6.3 Safety Evaluation

The Reactor Cavity Cooling System is not a safety-re lated system. However, t he fans and portions of the ductwork are designed and installed to satisfy seismic Category I requirements. Where the collapse of ductwork can cause damage of safety-related equipment located close to the duct, that portion of the ductwork is seismically qualified to remain inta ct in the event of a safe shutdown earthquake.

9.4.5.6.4 Inspection and Testing Requirements

Each component of the Reactor Cavity Cooling System is inspected prior to installation. The components are accessible for periodic inspection during plant shutdown.

All instrumentation and controls are tested and calibra ted, fans are statically and dynamically balanced, ductwork is leak tested, and the system is balanced, adjusted, and tested for performance during

preoperational testing.

9.4.5.7 Control Element Driv e Mechanism Cooling System

9.4.5.7.1 Design Bases

The Control Element Drive Mechanism (C EDM) Cooling System is designed to:

a) cool the magnetic jack coils and thereby maintain them at a temperature below 350 F, and b) provide accessibility for adjustments and regular ly scheduled tests to assure continued functional reliability. (EC-33471, R307)The system is not safety-related but is designed to seismic Category I requirements to protect neighboring safety-related equipment.

(EC-33471, R307)

9.4.5.7.2 System Description

The CEDM Cooling System consists of four 50 perc ent capacity exhaust fans (E

-16) and cooling coils.

Components design data are given in Table 9.4-19.

WSES-FSAR-UNIT-3 9.4-31 Revision 14 (12/05)Two of the four fans operate to maintain a negative pressure inside the CEDM cooling shroud. The other two fans are standby units. Isolation dampers are provided to prevent flow through the standby fans.

Containment air is drawn through the cooling shroud for the magnetic jack coil elements to the CEDM

cooling system. The heated air is cooled by water cooling coils, supplied from the Component Cooling Water System, and is discharged back to the containment through the system fans, thereby rejecting the CEDM generated heat to a sink outside the containment. Each fan is started manually from a control switch in the main control room. Indicating lights in the main control room indicate operating status. Control room indication exists for air temperature entering the

cooling coil and high exit temperature is annunciated. The shroud temperature and the temperature of component cooling water leaving the cooling coil are indicated in the main control room. A low temperature lockout, sensing containment temperature, prevents fans from starting. 9.4.5.7.3 Safety Evaluation.

The CEDM Cooling System is not a safety-related system. Although failures of this system can produce no consequences that would require a safety classification, it has been designed with the necessary features to assure continuity and reliability of operation. Two fans are powered from safety bus A and two fans are powered from safety bus B. If there is a loss of offsite power or a SIAS, the fans will be

automatically tripped and can be loaded manually onto the safety buses. 9.4.5.7.4 Inspection and Testing Requirements Each component of the CEDM Cooling System is inspected prior to installation. The components are accessible for periodic inspection during plant shutdown.

All instrumentation and controls are tested and calibrated, fans are statically and dynamically balanced, ductwork is leak tested, and the system is balanced, adjusted, and tested for performance during

preoperational testing. 9.4.5.8 Annulus Negative Pressure System9.4.5.8.1 Design Bases (DRN 05-787, R14)The Annulus Negative Pressure System is provided to maintain the Shield Building annulus at a negative pressure during normal operation to support the value assumed in radiological analyses. This minimizes

the leakage of unfiltered air to the outside atmosphere. The system is non-safety and nonseismic. (DRN 05-787, R14)9.4.5.8.2 System Description The system consists of two 100 percent capacity exhaust fans (E-19), arranged in parallel, connected to a single duct system which penetrates the Shield Building and discharges into the stack. Component

design data are given in Table 9.4-20.

WSES-FSAR-UNIT-3 9.4-32The operator selects the operating fan and the standby fan by means of switches in the main controlroom. The controls are arranged so that neither fan can start until both Shield Building isolation valves (3HV-B175 and 3HV-B176) and inlet dampers D-24 are open. Initiation of the fan starting sequence first opens these valves and dampers. The standby fan is automatically started upon loss of air flow from the operating fan after a time delay. An alarm is provided in the main control room when the negative pressure drops to 6 inches water gage.A negative pressure of 8 in. WG is maintained in the annulus by damper D-25 through differentialpressure control.Automatic fan inlet dampers and fan gravity discharge dampers permit fan isolation for maintenancepurposes and prevent air recirculation through the standby fan.The system operates continuously during normal operation until a SIAS closes the isolation valves causingshutdown of the system fans though the respective valve limit switches.9.4.5.8.3Safety EvaluationThe two isolation valves and interconnected piping penetrating the Shield Building are designed to safetyclass 3 and seismic Category I requirements. Operation of the remaining portion of the Annulus Negative Pressure System serves no safety function and consequently is not designed to safety or seismic requirements. The system is isolated by a CIAS or SIAS and serves no function thereafter.System redundancy is provided for the fans which have motors powered from separate safety buses,trains A and B. If there is a loss of offsite power to either bus, the fan is automatically tripped. During normal shutdown coincident with a loss of offsite power, the control room operator can manually restart the fans (refer to Table 8.3-1).When one system fan is shut down due to power failure and the power has been restored to the divisionbus, the operator must manually restore power to the non-safety portion of the motor control center before the fan is restarted.9.4.5.8.4Inspection and Testing Requirements Each component of the Annulus Negative Pressure System is inspected prior to installation. Thecomponents are accessible for periodic inspection,All instrumentation and controls are tested and calibrated, fans are statically and dynamically balanced,ductwork is leak tested, and the system is balanced, adjusted, and tested for performance during preoperational testing.9.4.5.9Shield Building Ventilation SystemThe Shield Building Ventilation System is an engineered safety feature filter system described as part ofthe fission product. removal systems in Subsection 6.5.1. The design bases, design description, operation and reliability of the Shield Building Ventilation System is discussed in Subsection 6.2.3.

WSES-FSAR-UNIT-3 TABLE 9.4-1 (Sheet 1 of 2) Revision 306 (05/12)

DESIGN SPACE TEMPERATURES AND HUMIDITIES FOR NORMAL PLANT OPERATION (1)

Summer Relative Summer Humidity (%) Winter Temp (F) or Temp (F)

Location (Dry Bulb) Temp (Wet Bulb) (Dry Bulb)

Outdoor 93 81 32

Control Room Envelope

Main Control Room 75 50% 70

Computer Room 75 50% 70

HVAC Equipment Room 104 -- 50

Reactor Auxiliary Bldg (RAB)

Radwaste Area

a) Holdup Tank Rooms 120 -- 50

b) Unrestricted Areas 104 -- 50

Personnel Decontamination Area 75 50% 70

CVAS Area 104 -- 50

CCW Area 104 -- 50

Emergency Diesel Generator Area 120 -- 50

Cable Vault & Switchgear Area 104 -- 50

Battery Rooms 77 -- 77

Communication Room 77 -- 77

CEDMCS Cabinets Area (RAB 85 60% (Max)

(2) 50 Switchgear B Area)

Hot Machine Shop 75 -- 70

Decontamination Area 75 -- 70

RAB H & V Room 104 -- 50 (EC-17580, R306)

RAB H & V Room EL. +21 77 -- 77 (EC-17580, R306)

WSES-FSAR-UNIT-3 TABLE 9.4-1 (Sheet 2 of 2) Revision 14-A (03/06) Summer Relative Summer Humidity (%) Winter Temp (F) or Temp (F)

Location (Dry Bulb) Temp (Wet Bulb) (Dry Bulb)

RAB Air Conditioning System I & C Area 75 50% 70 Mechanical Equip Rm 104 -- 50

Fuel Handling Bldg 104 -- 50 Turbine Bldg Accessible Area 104 -- 50 Switchgear Room Area 104 -- 50

Reactor Bldg Containment 120 -- 50 Reactor Cavity 120 -- 50 Shield Bldg 120 -- 50 (1) Based on ASHRAE (1972): Climatic conditions 99 percent of winter hours and one percent of summer hours. (2) Space relative humidity is not controlled. However, it is not expected to exceed the listed limit as is coincident with space design cooling load. (DRN 05-1480, R14-A)(3) Upper Reactor Cavity 145°F Lower Reactor Cavity 145°F (DRN 05-1480, R14-A)

WSES-FSAR-UNIT-3 TABLE 9.4-2 (Sheet 1 of 5) Revision 302 (12/08)

DESIGN DATA FOR CONTROL ROOM AIR CONDITIONING SYSTEM COMPONENTS A. Air Handling Unit Identification AH-12 (3A-SA) and AH-12 (3B-SB)

1) Fans

Quantity per Unit 1 Type Centrifugal, belt driven Air flow, per fan, acfm 38,200 Static pressure, in. WG 5.33 Code Air Moving and Conditioning Association (AMCA), Anti-Friction Bearing Manufac-turers Association (AFBMA)

2) Motors

Quantity per Unit 1 Size 75 hp Type Horizontal induction Electrical Characteristics 460 volt, 60 Hz, 3 phase Insulation Type H Enclosure TEFC Code IEEE 323-1974 IEEE 344-1975 NEMA MG-1

3) Cooling Coils Quantity per Unit 1 bank Type chilled water, finned tube Capacity, each bank, (EC-2188, R302)

Btu/hr 1,401,000 (EC-2188, R302)

Material Copper fin on copper tube Code ARI Standard 410 ASME Section III Class 3

4) Heating Coils EHC-34 (3A-SA) and EHC-34 (3B-SB)

Quantity per Unit 1 Type electric Capacity, each Coil kW 30 Electrical Characteristics 480 volt, 60 Hz, 3 phase Code IEEE 323-1971 IEEE 344-1975

5) Medium Efficiency Filters Quantity per Unit 1 bank No. of cells, size, in. 24 cells (24 x 24 x 12)

Type Disposable cellular Material Glass fiber WSES-FSAR-UNIT-3TABLE 9.4-2 (Sheet 2 of 5)B.Toilet Exhaust System E-34 (3A-SA) and E-34 (3B-SB)Identification1)Fans Quantity2 TypeCentrifugal, direct drive Air flow per fan, acfm1070 Static pressure, in. WG1.85 CodeAMCA and AFBMA2)Motors Quantity per Unit1 Size3/4 hp TypeHorizontal induction Electrical Characteristics460 volt, 60 Hz, 3 phase InsulationType F EnclosureTEFC CodeIEEE 323-1974IEEE 344-1975 NEMA MG-1C.Conference Room & Kitchen ExhaustE-42 (3)System Identification1)Fan Quantity1 TypeCentrifugal, direct drive Air flow per fan, acfm985 Static pressure, in. WG1.85 CodeAMCA and AFBMA2)Motors Quantity1 Size3/4 hp TypeHorizontal induction Electrical Characteristics460 volt, 60 Hz, 3 phase InsulationType F EnclosureTEFC CodeIEEE 323-1974IEEE 344-1975 NEMA MG-1 WSES-FSAR-UNIT-3 TABLE 9.4-2 (Sheet 3 of 5) Revision 302 (12/08)

D. Equipment Room Local Coolers

Air Handling Unit Identificat ion AH-26 (3A-SA) and AH-26 (3B-SB)

1) Fans

Quantity per Unit 1 Type Centrifugal, direct drive Air flow, per fan, acfm 3500 Static pressure, in. WG .85 Code AMCA and AFBMA

2) Motors

Quantity, per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460 volt, 60 Hz, 3 phase Insulation Type H Enclosure TEFC Code IEEE 323-1974 IEEE 344-1975 NEMA MG-1

3) Cooling Coils

Quantity per Unit 1 bank Type Chilled water, finned tube (EC-2188, R302)

Capacity, Btu/hr. - Coil 86,600 (EC-2188, R302)

Material Copper fins on copper tube Code ARI Standard 410 ASME Section III Class 3

4) Filters

Quantity, per Unit 1 Bank No. of cells, size, in. 4-(16 x 25 x 2)

Type Disposable Material Glass fiber

E. Emergency Filtration Units

Unit Identification S-8 (3A-SA) and S-8 (3B-SB)

1) Fans

Quantity per Unit 1 Type Centrifugal, direct drive Air flow, per fan, acfm 4,225 Static pressure, in. WG 12.84 Code AMCA, AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-2 (Sheet 4 of 5) Revision 301 (09/07)

E. Emergency Filtration Units (Cont'd)

2) Motors

Quantity per Unit 1 Size 15 hp Type Horizontal induction Electrical Characteristics 460 volt, 60 Hz, 3 phase Insulation Type H Enclosure TEFC Code IEEE 323-1974 IEEE 344-1975 NEMA MG-1

3) Medium Efficiency Filters

Quantity per Unit 1 bank, 4 cells (24 x 24 x 12)

Type Cartridge Material Glass fiber

4) HEPA Filters (Prefilter and Afterfilter)

Quantity, per Unit 2 banks, 4 cells/bank Cell size, in. (24 x 24 x 12)

Max. resistance clean, in.

WG 1.0 each section Max. resistance loaded, in.

WG 4.0 each section with 0.3 micron DOP Material Glass sheet, separator less type, supported on cadmium plated steel frame Efficiency 99.97%

Code MIL-F-51068

5) Charcoal Adsorbers (DRN 01-572, R11-A)

Quantity per Unit 1 Type 4 in. deep bed gasketless welded construction Efficiency Methyl iodide penetration of less than 0.5% when tests are performed in

accordance with ASTM D3803-1989 at

30°C and relative humidity of 70%. (DRN 01-572, R11-A)

(EC-5000082470, R301)

Design Loading 4.19 x 10

-3 g Peak Decay Heat Load, 6.53 x 10

-1 BTU/hr (EC-5000082470, R301)

(DRN 01-572, R11-A)

Btu/hr. Codes ANSI N509-1976 and ASTM D3803-

1989 (DRN 01-572, R11-A)

WSES-FSAR-UNIT-3TABLE 9.4-2 (Sheet 5 of 5) Revision 9 (12/97)E.Emergency Filtration Units (Cont'd)6)Heating CoilsEHC-49 (3A-SA) and EHC-49 (3B-SB) Quantity per Unit1 TypeElectric Capacity, kW per Coil10 Electrical Characteristics480 volt, 60 Hz, 3 phase CodeIEEE 323-1971IEEE 344-1975

NEMA, NEC WSES-FSAR-UNIT-3(DRN 99-1097)TABLE 9.4-3 (Sheet 1 of 3)Revision 11 (05/01)(DRN 99-1097)CONTROL ROOM AIR CONDITIONING SYSTEM FAILURE MODES & EFFECTS ANALYSISComponent Identification Failure Mode Effect on SystemMethod of DetectionMonitor Remarks(DRN 99-1097)Normal Outside air intakevalves3HV-B169A or 3HV-B170BValve fails toclose on isolationsignalNoneClass 1E valve positionindicating lights CRI*Redundant valve in series will close.(DRN 99-1097)Emergency outside airintake valves3HV-B196A, 3HV-B198A,3HV-B197B, 3HV-B199B, 3HV-B201A, 3HV-B203A,3HV-B200B or 3HV-B202BValve fails to a) open or b) closeNoneClass 1E valve positionindicating lights CRIa) Valve on redundant parallel duct will openor b) redundant valve on same duct will close.(DRN 99-1097)Outside air intake damperto Air Handling Unit AH-12D-40(SA) or D-40(SB)Damper fails to openNo outside air flowDamper position indicator CRIControl Room operator starts redundant airhandling unit(DRN 99-1097)Air Handling Unit AH-12 filters (2)Filter clogsReduction in supplyair flowClass 1E differential pressurealarm across filters CRI100 percent capacity redundant air handlingunit remains operableAir Handling Unit AH-12cooling coil (2)Fails due to rupture ofchilled water pipingIncrease in supplyair temperatureClass 1E temperature alarmwith sensor at fan discharge CRI100 percent capacity redundant air handlingsystem remains operableAir Handling Unit AH-12 Fan (2)Fails to startNo supply airClass 1E differential pressuretransmitter CRIAutomatically starts 100 percent capacityredundant unit.Air Handling Unit AH-12Electric heating coilEHC-34 (3A-SA) or EHC-34(3B-SB)Class 1E primary over-temperature protectionthermal cutouts fail tode-energize coilIncrease in supplyair temperatureTemperature rises in the maincontrol room CRIClass 1E secondary over-temperature protectionthermal cutouts are provided to de-energize electric heating coil and coil in redundantsystem remains operableAir Handling Unit AH-12electric heating coilEHC-34(3A-SA) or EHC-34(3B-SB)Class 1E primary over-temperature protection thermal cutouts remain inopen position or coil failsto operate for otherreasonsDecrease in supplyair temperatureTemperature falls in main con-trol room CRICoil in redundant system remains operableInlet damper to Air HandlingUnit AH-12 D-39 (SA), or D-39 (SB)Fails to openFan will not startClass 1E fan status indicatinglights CRI100 percent capacity redundant unit will startautomatically WSES-FSAR-UNIT-3(DRN 99-1097)TABLE 9.4-3 (Sheet 2 of 3)Revision 11 (05/01)(DRN 99-1097)CONTROL ROOM AIR CONDITIONING SYSTEM FAILURE MODES & EFFECTS ANALYSISComponent Identification Failure Mode Effect on SystemMethod of DetectionMonitor Remarks(DRN 99-1097)Zone reheat coils EHC-21(3),EHC-23(3), EHC-24(3) andEHC-25(3)a) Fails to shut offb) Fails to starta) Increase insupplyair temperatureb) Decrease in supply airtemperatureTemperature rises in the maincontrol room CRIa) Manually disconnect power supply at coilterminal boxb) N/AEmergency Filtration UnitFans S-8 (3A-SA) or S-8(3B-SB)Fails to startNo air flow throughfilter trainClass 1E differential pressureindicating switch across filtertrain and Class 1E fan status indicating switch CRI100 percent capacity redundant unit willautomatically startInlet damper for EmergencyFiltration Unit D-17(SA),D-17(SB), D-41(SA) or D-41(SB)a) Fails to openb) D-41 (SA/SB) fails toclosea) Fan will not startb) Residual flowClass 1E status indicating light CRIa) 100 percent capacity redundant unit willautomatically startb) Residual flow through filter unitEmergency Filtration UnitFilters: Medium EfficiencyFilter, HEPA Prefilter, orHEPA AfterfilterFilter clogsReduced air flowthrough filter trainClass 1E differential pressurealarm across filter train CRIControl Room operator starts redundant filtrationunit(DRN 99-1097)Emergency Filtration Unit Electric Heating CoilEHC-49(3A-SA) or EHC-49(3B-SB)Class 1E primary over-temperature protectionthermal cutouts remain inopen position or coil fails to operate for otherreason.Filter train fan willstopClass 1E temperature sensors CRI100 percent capacity redundant system willautomatically startEmergency Filtration ElectricHeating Coil EHC-49(3A-SA) orEHC-49(3B-SB)Class 1E primary over-temperature protection thermal cutouts fail to de-energize coilIncrease in airtemperatureClass 1E temperature sensors CRIClass 1E secondary over-temperature protectionthermal cutouts are provided to de-energizecoil and coil in redundant system remainsoperable.Main Control Room H & VEquipment Room Coolers

FansAH-26 (3A-SA), or AH-26(3B-SB)Fails to startTemperature will riseslowly insideequipment roomClass 1E room temperaturesensor CRIControl Room operator starts redundant AH-12,and interlocked AH-26 automatically starts WSES-FSAR-UNIT-3(DRN 99-1097)TABLE 9.4-3 (Sheet 3 of 3)Revision 11 (05/01)(DRN 99-1097)CONTROL ROOM AIR CONDITIONING SYSTEM FAILURE MODES & EFFECTS ANALYSISComponent Identification Failure Mode Effect on SystemMethod of DetectionMonitor RemarksMain Control Room H & VEquipment Room coolersfiltersFilter clogsReduced air flowthrough cooler willincrease roomtemperatureClass 1E temperature sensorin H & V equipment room CRIControl Room operator starts redundant AH-12 and interlocked AH-26 automatically startsExhaust System Isolationvalves 3HV-B171A, 3HV-B172B,3HV-B177A or 3HV-B178BIsolation valve fails tocloseNoneClass 1E valve positionindicating light CRIRedundant isolation valve in series will close(DRN 99-1097)Emergency Outside air pilottube flow measuring devicein duct (2)Emergency outside airintake flow measuringsystem failsExcessive or insuf-ficient outside air to systemClass 1E flow indicator CRIRedundant flow measuring device is operableInlet Dampers D-18 (SA&SB)and D-19 (SA&SB) fromTSC, kitchen, toilets, locker room, or janitors closet(normally closed, fail open,open for isolation mode)a) Fails to openb) Fails to closea) No recirc flowfrom TSC, kitchen,toilets, locker room,or janitors closetduring isolationmode b) Recirc flow fromTSC, kitchen, toilets,locker room, or janitors closet duringisolation modeIndicating light CRIa) Control Room operator opens the redundantdamper.b) Control Room operator closes the redundant damper.(DRN 99-1097)*CRI: main control room indication.

WSES-FSAR-UNIT-3 TABLE 9.4-4 (Sheet 1 of 4)DESIGN DATA FOR FUEL HANDLING BUILDING VENTILATION SYSTEMA.Air Handling Unit IdentificationAH-14(3)1)FanQuantity1TypeCentrifugal, direct drive Air flow, acfm29,130 Static pressure, in. WG3.22 CodeAMCA and AFBMA2)MotorQuantity1Size40 hpTypeHorizontal induction Electrical Characteristics460 volt, 60 Hz, 3 phase InsulationType BEnclosureTEFCCodeNEMA MG-13)Heating CoilIdentificationEHC-41 (3)Quantity1 TypeElectric Capacity, kW200 Electrical Characteristics480 volt, 60 Hz, 3 phaseIEEE 323-1971 IEEE 344-1975

NEMA, NEC4)Medium Efficiency FilterQuantity1 bank - 15 cells (24 x 24 x 12)TypeDisposable MaterialGlass fiberB.Normal Exhaust Fans Identification E-20(3A), E-20(3B)1)FansQuantity1TypeCentrifugal, direct drive Air flow, acfm29,565 Static pressure, in. WG4.86 CodeAMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-4 (Sheet 2 of 4)Revision 11-A (02/02)2)Motor(DRN 00-691)Quantity per Unit1Size50 hp Type Horizontal induction Electrical Characteristics 480 volt, 60 Hz, 3 phase Insulation Type F Enclosure TEFC Code NEMA Design B(DRN 00-691)C.Emergency Filtration Units Fan Identification E-35 (3A-SA) & E-35 (3B-SB)1)FansQuantity per Unit1 Type Centrifugal, direct drive Air flow, acfm4000Static pressure, in. WG10.5 CodeAMCA and AFBMA2)MotorsQuantity per Unit1Size15 hp Type Horizontal induction Electrical Characteristics 460 volt, 60 Hz, 3 phase InsulationType H Enclosure TEFC Code IEEE 323-1974 IEEE 344-1975

NEMA MG-13)Heating CoilsIdentificationEHC-42 (3A-SA), EHC-42 (3B-SB)Quantity per Unit1

Type ElectricCapacity, kW per Coil25Electrical Characteristics 480 volt, 60 Hz, 3 phase Codes IEEE 323-1971 IEEE 344-1975

NEMA, NEC4)Medium Efficiency FiltersQuantity per Unit1 bank - 4 cells (24 x 24 x 24)TypeCartridge MaterialGlass Fiber WSES-FSAR-UNIT-3TABLE 9.4-4 (Sheet 3 of 4)Revision 12-A (01/03)5)HEPA Filters (Prefilters and Afterfilters)Quantity2 banks - 4 filters/bankCell size, in.24 x 24 x 12

Max. Resistance Clean, in. WG 1.0 per bank Max. Resi stance Loaded, in. WG 4.0 per bank Glass sheet, separatorless type

supported on cadmium

plated steel frame Efficiency 99.97 percentCodeMIL-F-510686)Charcoal AdsorbersQuantity per Unit1 bankType4 in. deep bed gasketless welded(DRN01-572, R11-A;02-1753, R12-A) construction(DRN01-572, R11-A;02-1753, R12-A)D.H&V Room, Exhaust Fans Identification E-21 (3A-SA) and E-21 (3B-SB)1)FansQuantity, per Unit1TypeCentrifugal, direct drive Air flow, acfm3,310

Static pressure, in. WG 0.35CodeAMCA and AFBMA2)Motors(DRN00-691, R11-A)Quantity per fan1 Size 1.5 hp Type Horizontal inductionElectrical Characteristics 480 volt, 60 Hz, 3 phaseInsulationType H

Enclosure TEFC CodesIEEE 323-1974IEEE 344-1975NEMA MG-1(DRN00-691, R11-A)

WSES-FSAR-UNIT-3 TABLE 9.4-4 (Sheet 4 of 4)E.H&V Room, Electric Convention Heaters EHC-1(3) and EHC-2(3)TypeElectric resistance, surface-mountedbuilt-in thermostat, automatic-reset over temperature cut-out.Quantity2Heating Capacity,3 (kW each)

Electric Service480 V/3ph/60 HzCodesUL-listed WSES-FSAR-UNIT-3TABLE 9.4-5 Revision 11-A (02/02)

F.H.B. VENTILATION SYSTEM FAILURE MDOES & EFFECTS ANALYSIS Component Identification Failure Mode Effect on System Method of Detection Monitor Remarks Heating & Ventilation Room Exhaust Fans E-21 (3A-SA) or

E-21 (3B-SB)Fan E-21 fails to startH & V Equipment room temperature rises Class IE Temperature sensor in H & V Equipment room CRI*100 percent capacity redundant exhaust fan remains operable Outside air intake Louver Dampers LD-40 (SA) or LD-40 (SB)Damper fails to open Fan will not start Class IE fan status indicating light CRI100 percent capacity redundant system remains operable Emergency Filtration Fan E-35 (3A-SA) or E-35 (3B-SB)Fan fails to startNo air flow through filter train Class IE differential pressure alarm across filter train CRI100 percent capacity redundant system will automatically start Inlet damper to emergency filter train D-29 (SA) or

D-29 (SB)Fails to openFan will not startClass IE fan status indicating light CRI100 percent capacity redundant system will automatically start Emergency Filtration Unit Filters:

Medium Efficiency Filter, HEPA

Prefilter, or HEPA AfterfilterFilter clogsReduced airflow through filter train Class IE differential pressure alarm across filter train CRI100 percent capacity redundant filtration unit will automatically start Electric Heating Coil EHC-42 (3A-SA) or EHC-42

(3B-SB)Class 1E primary over-temperature protection thermal

cutouts remain in open position or coil fails to operate

for other reasons Filter train fan will stopClass IE temperature sensors CRI100 percent capacity redundant system will automatically start Electric Heating Coil EHC-42 (3A-SA) or

EHC-42 (3B-SB)

Class 1E primary over-temperature protection thermal

cutouts fail to de-energize coil Increase in air temperatureClass IE temperature sensors CRIClass 1E secondary over-temperature protectionthermal cutouts are provided to de-energize coil and

coil in redundant system remains operable(DRN 01-423)

Isolation Dampers (4)D-37A, D-37B, D-38A or D-38B Isolation Dampers (2)

D-35A and D-35B Fails to close NoneClass IE status indicating lights CRIA single Emergency Filtration Unit (E-35) can maintain the required flow and negative pressure in the FHB

Spent Fuel Pool Area with one damper failed open.

Bypass Dampers (2)

D-36A or D-36BFails to openNoneClass IE status indicating lights CRI Redundant damper in parallel will open(DRN 01-423)

• CRI = main control room indication WSES-FSAR-UNIT-3 TABLE 9.4-6 (Sheet 1 of 3)DESIGN DATA FOR REACTOR AUXILIARY BUILDINGNORMAL VENTILATION SYSTEMA.Supply SystemAir Handling Unit Identification:S-6 (3A) and S-6 (3B)1)FansQuantity per Unit1 TypeCentrifugal, direct drive Air Flow, per fan, acfm79,055 Static Pressure, in. WG9.3 CodeAMCA and AFBMA2)MotorsQuantity, per fan1Size200 hpTypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationType FEnclosureTEFCCodeNEMA MG-13)Cooling CoilQuantity1 BankTypeChilled water, finned tubeMaterialCopper tubes and fins Capacity, Btu/hr1,680,000 CodeARI Standard 4104)Heating CoilIdentificationEHC-35(3)

Quantity1 TypeElectric Capacity, kW450Electrical Characteristics480V, 60Hz, 3 phaseCodeNEMA, NEC5)Medium Efficiency Filter1 BankQuantity40 No. of cells, size, in.(24 x 24 x 12)TypeDisposable MaterialGlass fiber WSES-FSAR-UNIT-3 TABLE 9.4-6 (Sheet 2 of 3)B.Exhaust SystemAir Handling Unit Identification:E-22 (3A) and E-22 (3B) 1)FansQuantity per Unit1 TypeCentrifugal, direct drive Air flow, acfm92,190 Normal Exhaust151,330 Normal Exhaust and PurgeStatic Pressure, in. WG12.5 Normal Exhaust16.3 Normal Exhaust and PurgeCodeAMCA and AFBMA2)MotorsQuantity per fan1Size700 hp TypeHorizontal induction Electrical Characteristics4000V, 60Hz, 3 phase InsulationClass B PowerhouseEnclosureDripproof CodeNEMA MG-13)Air Clean-up Exhaust FilterIdentificationE-22a) Medium Efficiency Filters Quantity1 bank - 90 cells Cell Size, in.(24 x 24 x 12) Material and TypeGlass Fiber (Extended media) Efficiency55 percent CodeULb) HEPA Filters Quantity1 bank - 90 cells Cell size, in.(24 x 24 x 12)

Max. Resistance Clean,1.0 in. WG.

Max. Resistance Loaded,3.0 in. WG.

WSES-FSAR-UNIT-3 TABLE 9.4-6 (Sheet 3 of 3)B.Exhaust System (Cont'd) MaterialGlass sheet,separatorless type, supported on cadium plated steel frame. Efficiency99.97 percent CodeMIL-F-51068 and MIL-F-51079c) Charcoal Adsorbers Quantity per Unit1 Bank Type4 in. deep bed, Gasketlesswelded construction Efficiency99.9 percent minimum of iodideswith 5 percent in the form of methyl iodide, CH 3I, whenoperating at 70 percentrelative humidity and 150

°F. CodeANSI N 509 - 1976 WSES-FSAR-UNIT-3TABLE 9.4-7 (Sheet 1 of 2)DESIGN DATA FOR PERSONNEL DECONTAMINATION AREA VENTILATION SYSTEMA.Supply SystemAir Handling Unit IdentificationAH-6(3) 1)FanQuantity1 TypeCentrifugal, direct drive Air flow, acfm5240 Static Pressure, in. WG3.4 CodeAMCA and AFBMA2)MotorQuantity1 Size7-1/2 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass B EnclosureTEFC CodeNEMA MG-13)Cooling CoilQuantity1 BankTypeChilled water, finned tube MaterialCopper Tubes & FinsCapacity, Btu/hr526,000 CodeARI Standard 4104)Heating CoilIdentificationEHC-30(3)

Quantity1 TypeElectric Capacity, kW38 Electrical Characteristics480V, 60Hz, 3 phase CodeNEMA, NEC5)Medium Efficiency FilterQuantity1 Bank No. of cells, size, in.3-(12 x 24 x 12) &2-(24 x 24 x 12)TypeDisposable MaterialGlass Fiber6)Reheat Coils Identification EHC-3(3), EHC-4(3), EHC-6(3) and EHC-7(3)Quantity4TypeElectric Capacity, kW12, 5, 10, 10Electrical Characteristics4870V, 60Hz, 3 phase CodeNEMA, NEC WSES-FSAR-UNIT-3TABLE 9.4-7 (Sheet 2 of 2)DESIGN DATA FOR PERSONNEL DECONTAMINATION AREA VENTILATION SYSTEMA.Supply System (Cont'd)Air Handling Unit IdentificationAH-8(3) 1)FanQuantity1 TypeCentrifugal, direct drive Air flow, acfm4,300 Static Pressure, in. WG.3.34 CodeAMCA and AFBMA2)MotorQuantity1Size5 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass BEnclosureTEFC CodeNEMA MG-13)Cooling CoilQuantity1 BankTypeChilled water, finned tubeMaterialCopper Tubes & Fins Capacity, Btu/hr426,000 CodeARI Standard 4104)Heating CoilIdentificationEHC-32(3)

Quantity1 TypeElectric Capacity, kW34 Electrical Characteristics480V, 60Hz, 3 phase CodeNEMA, NEC5)Medium Efficiency FilterQuantity1 BankNo. of Cells, Size, in.2-(24 x 24 x 12)

TypeDisposable MaterialGlass Fiber6)Reheat Coils IdentificationEHC-8(3), EHC-11(3) and EHC-13(3)Quantity per Zone1TypeElectric Capacity, kW8 18, 2 Electrical Characteristics480V, 60Hz, 3 phase CodeNEMA, NEC WSES-FSAR-UNIT-3 TABLE 9.4-8 (Sheet 1 of 2) Revision 7 (10/94)DESIGN DATA FOR EMERGENCY DIESEL GENERATOR VENTILATION SYSTEMA.Diesel Generator Room Ventilation System (Train A)1.Exhaust System (Train A)Fan IdentificationE-28(3A-SA) a)FanQuantity1TypeAxial FlowAir Flow, acfm117,600 Total Pressure, in. WG1.75 CodeAMCA and AFBMAb)MotorQuantity1 Size60 hp Electrical Characteristics460V, 60Hz, 3 phaseInsulationClass RH EnclosureTEAOCodesNEMA MG-1IEEE 323-1974 IEEE 344-19752.Normal Ventilation System (NNS)(Served by RAB Normal Ventilation System)a)Electric Heating CoilIdentificationEHC-56(3A)

Quantity1 TypeElectric Capacity, kW6 Electrical Characteristics480V, 60Hz, 3 phase CodeNEMA, NECB.Diesel Generator Room Ventilation System (Train B)1.Exhaust System (Train B)Fan IdentificationE-28(3B-SB)a)FanQuantity1TypeAxial FlowAir Flow, acfm128,000Total Pressure in. WG2.8CodeAMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-8 (Sheet 2 of 2)DESIGN DATA FOR EMERGENCY DIESEL GENERATOR VENTILATION SYSTEMB.Diesel Generator Room Ventilation System (Train B) (Cont'd)1.Exhaust System (Train B) (Cont'd)b)MotorQuantity1 Size100 hp Electrical Characteristics460V, 60Hz, 3 phase InsulationClass RH EnclosureTEAO CodesNEMA MG-1IEEE 323-1974 IEEE 344-19752.Normal Ventilation System (NNS)(Served by RAB Normal Ventilation System)a)Electric Heating CoilIdentificationEHC-56(3B0)

Quantity1 TypeElectric Capacity, kW2Electrical Characteristics480V, 60Hz, 3 phaseCodesNEMA, NEC WSES-FSAR-UNIT-3 TABLE 9.4-9 (Sheet 1 of 2) Revision 15 (03/07)

DESIGN DATA FOR RAB H&V ROOM VENTILATION SYSTEM

A. Supply System

Air Handling Units Identification AH-13(3A-SA) and AH-13(3B-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air Flow, acfm 27,400 Static Pressure, in. WG 3.02 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 30 hp Type Horizontal induction Electrical Characteristics 460V, 60Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Heating Coils Identification EHC-55(3A), EHC-55(3B)

Quantity per Unit 1 Type Electric Capacity, kW 50 Electrical Characteristics 480V, 60Hz, 3 phase Code NEMA, NEC

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 24 - (20 x 25 x 2)

Type Disposable Material Glass Fiber

B. Exhaust System Identification E-41(3A-SA) and E-41(3B-SB)

1) Fans Quantity 2 (DRN 06-843, R15)

Type Centrifugal, belt drive (DRN 06-843, R15)

Air Flow, acfm 27,390 Static Pressure, in. WG 1.23 Codes AMCA and AFBMA

WSES-FSAR-UNIT-3TABLE 9.4-9 (Sheet 2 of 2)DESIGN DATA FOR RAB H&V ROOM VENTILATION SYSTEMB.Exhaust System (Cont'd)2)MotorsQuantity per Fan1 Size15 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass H EnclosureTEFC CodesNEMA MG-1IEEE 323-1974 IEEE 344-1975 WSES-FSAR-UNIT-3 TABLE 9.4-10 (Sheet 1 of 5) Revision 302 (12/08)

DESIGN DATA FOR RAB CABLE VAULT AND SWITCHGEAR AREAS VENTILATION SYSTEM

A. Supply Air - EL + 46 ft MSL

Air Handling Units Identification AH-25(3A-SA) and AH-25 (3B-SB)

(DRN 05-365, R14) 1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 30,300 Static Pressure, in. WG 4.82 Code AMCA and AFBMA (DRN 05-365, R14)

2) Motors Quantity per Unit 1 Size 50 hp Type Horizontal induction Electrical Characteristics 460V, 60Hz, 3 phase Insulation Class H Enclosure TEFC Code NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 bank Type Chilled water, finned tube Material Copper (EC-2188, R302)

Capacity, Btu/hr/Coil 1,650,500 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Heating Coils Identification EHC-36(3A-SA) and EHC-36(3B-SB) Quantity per Unit 1 Type Electric Capacity 60 kW Electrical Characteristics 480V, 60Hz, 3 phase NEMA, NEC IEEE 323-1971 IEEE 344-1975

5) Medium Efficiency Filters Quantity per Unit 1 bank No. of Cells, Size, in. 20 - (24 x 24 x 12)

Type Disposable Material Glass Fiber WSES-FSAR-UNIT-3 TABLE 9.4-10 (Sheet 2 of 5) Revision 302 (12/08)

B. Reheat Coils

Identification EHC-52(3),

• EHC-53(3), EHC-57(3)

EHC-54(3), (DRN 00-691, R11-A)

Quantity, total 4 Type Electric Capacity each, kW 2 SVS-EEHC-316A-2BL 3 SVS-EEHC-316B-2BR SVS-EEHC-316A-3BL SVS-EEH-316B-2BL (DRN 00-691, R11-A)

Electrical Characteristics 480V, 60Hz, 3 phase Code NEMA, NEC

C. Recirculated Supply Air - EL + 7 ft MSL

Air Handling Units Identification AH-30(3A-SA) and AH-30(3B-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 11,105 Static Pressure, in. WG 3.15 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size, hp 15 Type Horizontal induction Electrical Characteristics 460V, 60Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974 IEEE 344-1975

3) Cooling Coils Quantity 1 bank Type Chilled water, finned tube Material Copper tubes (EC-2188, R302)

Capacity, Btu/hr/Coil 534,500 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Medium Efficiency Filters Quantity per Unit, Cell 1 bank, 6 cells-(24 x 24 x 12) and Size, in. 2 cells-(12 x 24 x 12)

Type Disposable Material Glass Fiber

• EHC-58(3) has been abandoned in place.

WSES-FSAR-UNIT-3TABLE 9.4-10 (Sheet 3 of 5)Revision 10 (10/99)D.Reheat CoilIdentificationEHC-59(3)Quantity1 TypeElectric Capacity, kW8 Electrical Characteristics480V, 60Hz, 3 phase CodeNEMA, NECE.Battery Rooms A & B Exhaust FansBattery Room ABattery Room BIdentificationE-29(3A-SA)E-30(3A-SA)E-29(3B-SB)E-30(3B-SB)1)FansQuantity per Room2 TypeCentrifugal, direct drive Air flow, per fan, acfm257283 Static Pressure; in. WG1.11.1 CodesAMCA and AFBMA2)MotorsQuantity per Fan1 Size3/4 hpTypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass H EnclosureTEFC CodesNEMA MG-1IEEE 323-1974 IEEE 344-1975F.Battery Room AB and Computer Battery RoomBattery Room ABComputer Battery RoomE-31(3A-SA)E-46(3A-SA)E-31(3B-SB)E-46(3B-SB)1)FansQuantity2 TypeCentrifugal, direct drive Air flow, per fan, acfm265580 Static Pressure, in. WG1.051.0 CodesAMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-10 (Sheet 4 of 5)F.Battery Room AB and Computer Battery Room (Cont'd)2)MotorsQuantity per Fan1 Size3/4 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass HEnclosureTEFC CodesNEMA MG-1IEEE 323-1974 IEEE 344-1975G.Smoke Purge Exhaust FansPenetrationCable Switchgear Area Vault RoomIdentificationE-50(3)E-49(3) E-48(3)1)FansQuantity11 1 TypeCentrifugal, direct drive Air flow, acfm30653065 49,250 Static Pressure, in. WG1.51.5 2.5 CodeAMCA and AFBMA2)MotorsQuantity11 1 Size2 hp2 hp 60 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass F EnclosureTEFC CodesNEMA MG-1H.Equipment Room Exhaust FansIdentificationE-52(3A-SA) and E-52(3B-SB) 1)FansQuantity2 TypeCentrifugal Airflow, acfm, fan275 Static Pressure, in. WG1.0 CodeAMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-10 (Sheet 5 of 5)H.Equipment Room Exhaust Fans (Cont'd)2)MotorsQuantity per fan1 Size3/4 hp TypeHorizontal induction Electrical Characteristics460V, 60Hz, 3 phase InsulationClass HEnclosureTEFC CodesNEMA MG-1IEEE 323-1974 IEEE 344-1975 WSES-FSAR-UNIT-3TABLE 9.4-11 (Sheet 1 of 2)RAB CABLE VAULT AND SWITCHGEAR AREAS VENTILATION SYSTEMFAILURE MODES AND EFFECTS ANALYSISComponent Identification Failure Mode Effect on SystemMethod of DetectionMonitorRemarksOutside Air Intake Dampers:D-65(SA) or D-65(SB)Fails to openIncrease or decrease in dis-charge temperature of AH-25 (depending on outside air temperature)Class 1E damper position indi-cating lights CRI*Mechanical stops will assume that dampersremain partially openAir Handling Unit AH-25Inlet Dampers: D-8(SA) or D-8(SB)Fails to openFan will not startClass 1E fan status indicatinglights CRIRedundant air handling unit will automa-tically startAir Handling Unit AH-25 Fan (2)Fails to startNo supply airClass 1E fan status indicatinglights CRIRedundant unit will start automaticallyAir Handling Unit AH-25Medium Efficiency Filter (2)Filter clogsReduced supply air flowClass 1E temperature alarm withsensor in switchgear area CRIRedundant air handling unit remains operableChilled Water Cooling Coil (2)Fails due to ruptureof chilled water pipingIncrease in supply airtemperatureClass 1E temperature alarm withsensors in switchgear area CRIRedundant air handling unit will startautomaticallyRecirculation Dampers:D-48(SA), D-48(SB),

D-49(SA) or D-49(SB)Fails to openNo impactDamper position indication CRIDamper in redundant parallel duct will remain openRecirculation Air HandlingUnit AH-30 Fans (2)Fails to startNo supply airClass 1E fan status indicatinglights CRIRedundant air handling unit will automatically startMedium Efficiency Filters (2)Filter clogsReduced supply air flowClass 1E temperature alarm withsensor in switchgear area CRIRedundant air handling unit will startautomaticallyChilled Water Cooling Coils (2)Fails due to ruptureof chilled water pipingIncrease in supply airtemperatureClass 1E temperature alarm withsensors in switchgear CRIRedundant air handling unit will startautomaticallyBattery Room Exhaust Fans:E-29(3A-SA), E-29(3B-SB),

E-30(3A-SA), E-30(3B-SB),E-31(3A-SA), E-31(3B-SB),E-46(3A-SA) or E-46(3B or SB)Fails to startIncrease in hydrogenconcentrationClass 1E fan status indicatinglights and alarm CRIRedundant exhaust fan remains operable WSES-FSAR-UNIT-3TABLE 9.4-11 (Sheet 2 of 2)RAB CABLE VAULT AND SWITCHGEAR AREAS VENTILATION SYSTEMFAILURE MODES AND EFFECTS ANALYSISComponent Identification Failure Mode Effect on SystemMethod of DetectionMonitorRemarksRecirculation Air HandlingUnits AH-30 Inlet Dampers:

D-50(SA) or D-50(SB)Fails to openFan will not startClass 1E fan status indicatinglights CRIRedundant air handling unit will automatically startH&V Room Exhaust Fans:E-52(3A-SA) or E-52(3B-SB)Fails to startIncrease in H&V roomtemperatureClass 1E temperature alarm withsensors in H&V room CRIRedundant fan remains operableH&V Room Outdoor Air Dampers:D-66(SA) or D-66(SB)Fails to openIncrease in H&V roomtemperatureClass 1E temperature alarm withsensor in H&V room CRIRedundant fan remains operable* CRI - main control room indication WSES-FSAR-UNIT-3TABLE 9.4-12 (Sheet 1 of 2)DESIGN DATA FOR RAB HOT MACHINE SHOP AND DECONTAMINATIONAREA VENTILATION SYSTEMDecontaminationHot MachineA.Supply System Room ShopAir Handling Units IdentificationAH-32(3)AH-33(3)1)FansQuantity11 TypeCentrifugaldirect drive Air flow, acfm12, 7207,160 Static Pressure, in. WG3.523.63 CodesAMCA and AFBMA2)MotorsQuantity11 Size15 hp10 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass B EnclosureTEFC CodesNEMA MG-13)Cooling CoilsQuantity1 Bank1 Bank TypeChilled water, finned tube MaterialCopper Capacity, Btu/hr.1,392,000 CodeARI Standard 4104)Heating CoilIdentificationEHC-60(3)EHC-61(3)

Quantity11 TypeElectric Capacity, kW125100 Electrical Characteristics480V, 60 Hz, 3 phase CodeNEMA, NEC5)Medium Efficiency FiltersQuantity per Unit1 Bank1 Bank No. of Cells and Size, in.6-(24x24x12)6-(24x24x12)5-(12x24x12)TypeDisposable MaterialGlass Fiber WSES-FSAR-UNIT-3TABLE 9.4-12 (Sheet 2 of 2)DecontaminationHot MachineB.Exhaust System Room ShopIdentificationAH-34(3)AH-35(3)1)FansQuantity11 TypeCentrifugaldirect drive Air flow, acfm13,1807,196Static Pressure, in. WG7.26.9 CodesAMCA and AFBMA2)MotorsQuantity11 Size30 hp20 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass B EnclosureTEFC CodeNEMA MG-13)Medium Efficiency FiltersQuantity/Unit1 Bank - 9 cells1 Bank - 6 cells Cell Size, in.(24x24x12)

TypeDisposableMaterialGlass Fiber4)HEPA FiltersQuantity per unit1 Bank - 9 cells1 Bank - 6 cells Cell Size, in.(24x24x12)Max. Resistance Clean in. WG1.0 Max. Resistance Loaded, in. WG3.0 MaterialGlass sheet, separatorless type,supported on cadmium plated steelframeEfficiency99.97 percentCodeMIL-F-51068 and MIL-F-51079C.Moisture Separator; Spray Wash Booth ExhaustQuantity1Air flow, cfm200Face Velocity, fpm200 Cell Size, in.12x12 WSES-FSAR-UNIT-3TABLE 9.4-13 (Sheet 1 of 2)DESIGN DATA FOR RABAIR CONDITIONING SYSTEMA.Supply SystemAir Handling Unit IdentificationAH-5(3)1)FanQuantity1 TypeCentrifugal Air flow, acfm7,100 External Static Pressure, in. WG3.5 CodesAMCA and AFBMA2)MotorQuantity1Size15 hpTypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass BEnclosureTEFCCodeNEMA MG-13)Cooling CoilQuantity1 BankCapacity, Btu/hr.260,700TypeChilled Water, finned tube MaterialCopper tubes & fins CodeARI Standard 4104)Heating CoilIdentificationEHC-1(3)

Quantity1 TypeElectric Capacity, KW30Electrical Characteristics480V, 60 Hz, 3 phaseCodeNEMA, NEC5)Medium Efficiency FilterQuantity1 Bank No. of Cells & Size, in.6 - (24x24x12)2 - (12x24x12)TypeDisposable MaterialGlass Fiber WSES-FSAR-UNIT-3TABLE 9.4-13 (Sheet 2 of 2)B.Exhaust SystemIdentificationE-47(3) 1)FanQuantity1 TypeCentrifugal, direct drive Air flow, acfm1205 Total Static pressure, in. WG1.25 CodesAMCA and AFBMA2)MotorQuantity1 Size3/4 hp TypeHorizontal induction Electrical Characteristics460 volt, 60 Hz, 3 phase InsulationClass F EnclosureTEFC CodeNEMA MG-1 WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 1 of 7) Revision 302 (12/08)

DESIGN DATA FOR CONTROLLED VENTILATION AREA SYSTEMS (CVAS)

FAN COOLERS A. Shutdown Heat Exchanger Areas A and B

Fan Coolers Identification AH-3(3A-SA) and AH-3(3B-SB)

1) Fan Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 5810 Static Pressure, in. WG 0.95 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Code NEMA MG-1, IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tube Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr. - Coil 150,000 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity 1 Bank No. of Cells, Size in. 6 cells (20x20x2)

Type Disposable Material Glass Fiber

B. Safeguard Pump A and A/B Area

Fan Coolers Identification AH-2(3A-SA), AH-2(3C-SA) & AH-21(3B-SAB)

1) Fans Quantity per Unit 1 1 1 Type Centrifugal, direct drive Air flow, acfm 8500 8500 5575 Static Pressure, in. WG 1.12 1.12 1.05 Code AMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 2 of 7) Revision 302 (12/08)

B. Safeguard Pump A and A/B Area (Cont'd)

2) Motors Quantity per Unit 1 1 1 Size 5 Hp 5 Hp 3Hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Code NEMA MG-1, IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank 1 Bank 1 Bank Type Chilled water, finned tubing Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr 406,300 406,300 192,700 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank 1 Bank 1 Bank Cell per Bank 9 9 6 Cell Size, in. (16x25x2) (16x25x2) (20x20x2)

Type Disposable Material Glass Fiber

C. Safeguard Pump B Area

Fan Coolers Identification AH-2(3B-SB), AH-2(3D-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 8615 Static Pressure, in. WG 0.98 Codes AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 5 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosures TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975 WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 3 of 7) Revision 302 (12/08)

C. Safeguard Pump B Area (Cont'd)

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tubing Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr. - Coil 310,600 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 9 cells (16 x 25 x 2)

Type & Size, in. Disposable Material Glass Fiber

DESIGN DATA FOR CHARGING PUMP AREA FAN COOLERS

A. Charging Pump A and B Areas

Fan Coolers Identification AH-18(3A-SA) and AH-18(3B-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow/fan, acfm 3700 Static pressure, in. WG 0.83 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tube Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr. - Coil 49,800 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 4 cells - (16 x 25 x 2)

Type Disposable Material Glass Fiber WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 4 of 7) Revision 302 (12/08)

B. Charging Pump AB Area

Fan Coolers Identification AH-22(3A-SAB) and AH-22(3B-SAB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow/fan, acfm 3700 Static pressure, in. WG 0.8 Code AMCA and AFBMAS

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tube Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr. - Coil 49,800 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 4 cells - (16 x 25 x 2)

Type Disposable Material Glass Fiber

DESIGN DATA FOR EMERGENCY F EEDWATER PUMP AREA FAN COOLERS

A. Emergency Feedwater Pump A and B Areas

Fan Coolers Identification AH-17(3A-SA) and AH-17(3B-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow/fan, acfm 3700 Static pressure, in. WG 0.83 Code AMCA and AFBMA WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 5 of 7) Revision 302 (12/08)

A. Emergency Feedwater Pu mp A and B Areas (Cont'd)

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tube Material Copper tubes and fins (EC-2188, R302)

Capacity Coil Btu/hr. - Coil 100,100 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 4 cells - (16 x 25 x 2)

Type Disposable Material Glass Fiber

DESIGN DATA FOR COMPONENT COOL ING WATER (CCW) AREA FAN COOLERS

A. CCW Heat Exchanger A and B Areas

Fan Coolers Identification AH-24(3A-SA) and AH-24(3B-SB)

1) Fans Quantity per unit 1 Type Centrifugal, direct drive Air flow, acfm 3800 Static Pressure, in. WG 0.723 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure NEMA MG-1 IEEE IEEE 323-1974, IEEE 344-1975 WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 6 of 7) Revision 302 (12/08)

A. CCW Heat Exchanger A and B Areas (Cont'd)

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tubing Material Copper tube and fins (EC-2188, R302)

Capacity Btu/hr. - Coil 55,800 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 4 cells (16 x 25 x 2)

Type Disposable Material Glass Fiber

B CCW Pumps A and B Areas

Fan Coolers Identification AH-10(3A-SA) and AH-10(3B-SB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 5800 Static Pressure, in. WG 0.95 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Bank Type Chilled water, finned tubing Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/hr. - Coil 146,600 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filters Quantity per Unit 1 Bank No. of Cells, Size, in. 6 cells (20 x 20 x 2)

Type Disposable Material Glass fiber WSES-FSAR-UNIT-3 TABLE 9.4-14 (Sheet 7 of 7) Revision 302 (12/08)

C. CCW Pump Area A/B

Fan Coolers Identification AH-20(3A-SAB) and AH-20(3B-SAB)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm 5800 Static Pressure, in. WG 0.95 Code AMCA and AFBMA

2) Motors Quantity per Unit 1 Size 3 hp Type Horizontal induction Electrical Characteristics 460V, 60 Hz, 3 phase Insulation Class H Enclosure TEFC Codes NEMA MG-1 IEEE 323-1974, IEEE 344-1975

3) Cooling Coils Quantity per Unit 1 Band Type Chilled water, finned tubing Material Copper tubes and fins (EC-2188, R302)

Capacity, Btu/Hr. - Coil 146,600 (EC-2188, R302)

Code ARI Standard 410 ASME Section III Class 3

4) Filter Quantity per Unit 1 Bank No. of Cells, Size, in. 6 cells (20 x 20 x 2)

Type Disposable Material Glass Fiber

WSES-FSAR-UNIT-3TABLE 9.4-15 (Sheet 1 of 3)DESIGN DATA FOR TURBINE BUILDING VENTILATION SYSTEMA.Intake Fan, Mezzanine FloorIdentificationS-10(3)1)FanQuantity1 TypeAxial flow, direct drive Air flow, acfm49,500 Total Pressure, in. WG.0.86CodeAMCA and AFBMA2)MotorQuantity1 Size15 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass F EnclosureTEAO CodeNEMAB.Exhaust FansIdentificationE-6(3), E-4(3), E-10(3)a-1)Axial FansQuantity111 TypeAxial flow, direct drive Air flow, acfm65,20065,20032,600 Total Pressure, in. WG. 2.27 2.05 1.19 CodeAMCA and AFBMAa-2)Motors for Axial FansQuantity111Size40 hp30 hp10 hpTypeHorizontal, direct drive Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass F EnclosureTEAOCodeNEMAb-1)Propeller Exhaust FansIdentificationE-7(3)E-3(3)E-5(3)E-8(3)E-2(3)

E-11(3)E-1(3)

E-44(3)E-9(3)E-12(3)

E-45(3)

WSES-FSAR-UNIT-3TABLE 9.4-15 (Sheet 2 of 3)B.Exhaust Fans (Cont'd)Quantity, total731TypePropeller, direct driveAir flow, each, acfm53,70043,00028,530Static Pressure, in. WG. 0.75 0.75 0.75 CodeAMCA and AFBMAb-2)Motors for Propeller FansQuantity, per fan111 Size20 hp15 hp10 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phaseInsulationClass BEnclosureTEAO CodeNEMAc-1)Power Roof VentilatorsIdentificationPV-13(3), PV-1(3)

Quantity1 1Type Air flow, acfm2252170 Static Pressure, in. WG.0.3750.5CodeAMCA and AFBMAc-2)Motors for Power Roof VentilatorsQuantity11 Size1/25 hp1/2 hp InsulationType AType A EnclosureTEFCTEFC CodeNEMANEMAC.Switchgear Room SupplyAir Handling Units IdentificationAH-15(3) and AH-29(3) 1)FansQuantity per Unit1TypeCentrifugal, direct drive Air flow, each acfm48,900 Static Pressure, in. WG.4.5CodeAMCA and AFBMA WSES-FSAR-UNIT-3TABLE 9.4-15 (Sheet 3 of 3)C.Switchgear Room Supply (Cont'd)2)MotorsQuantity per Unit1 Size60 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass B EnclosureTEFCCodeNEMA3)Medium Efficiency FiltersQuantity per Unit1 bankNo. of Cells, Size, in.20 cells-(24 x 24 x 12)TypeDisposable MaterialGlass FiberD.Condensate Pump Motor CoolingE-53(3A), E-53(3B)Exhaust Fan Units IdentificationE-54(3A), E-54(3B)E-55(3A), E-55(3B)1)FansQuantity6TypeAxial flow, Direct driveAir flow, each, acfm15,000 Total Pressure, in. WG.3.25 CodeAMCA and AFBMA2)MotorsQuantity, per fan1 Size20 hp TypeHorizontal induction Electrical Characteristics460V, 60 cycle, 3 phase InsulationClass F EnclosureTEAO CodeNEMA WSES-FSAR-UNIT-3 TABLE 9.4-16 (Sheet 1 of 2) Revision 15 (03/07)

DESIGN DATA FOR AIRBORNE RADIOACTIVITY REMOVAL SYSTEM

A. Air Cleanup Filter Train

Filter Trains Identification E-13(3A), E-13(3B)

1) Medium Efficiency Filter Quantity per train 1 bank No. of Cells 10 cells Type Cartridge Material Glass Fiber

2) HEPA Filters Quantity per train 1 bank No. of Cells 10 Cell Size, in. (24x24x12)

Max. Resistance Clean, in. WG. 1.0 Max. Resistance Loaded, in. WG. 4.0 Material Glass sheet, separatorless type supported on cadmium plated steel frame.

3) Charcoal Adsorbers Quantity per train 1 Type 4 in. deep bed welded construction

(DRN 06-843, R15)

(DRN 06-843, R15)

B. Recirculating Filter Fans Identification E-13(3A), E-13(3B)

1) Fans Quantity per Unit 1 Type Centrifugal, direct drive Air flow, acfm/fan 8,500 Static Pressure, in. WG./fan 6.3 Code AMCA and AFBMA WSES-FSAR-UNIT-3TABLE 9.4-16 (Sheet 2 of 2)B.Recirculating Filter Fans (Cont'd)2)MotorsQuantity per Unit1 Size25 hp TypeHorizontal inductionElectrical Characteristics460V, 60 Hz, 3 phaseInsulationClass F + PMR EnclosureTEFC CodeNEMA WSES-FSAR-UNIT-3TABLE 9.4-17DESIGN DATA FOR CONTAINMENT ATMOSPHERE PURGE SYSTEMContainment Purge Makeup 1)Medium Efficiency FilterNo. of Cells & Size, in.30 - 24 x 24 x 12TypeDisposable MaterialGlass Fiber Efficiency55 percent2)Heating Coil IdentificationEHC-50 (3)Quantity1 TypeElectric Electrical Characteristics480V, 60 Hz, 3 phase Capacity, kw390CodeNEMA, NEC WSES-FSAR-UNIT-3TABLE 9.4-18DESIGN DATA FOR REACTOR CAVITY COOLING SYSTEMSupply Fans IdentificationS-2(3A), and S-2(3B) 1)FansQuantity2 TypeAxial flow, directdriveAir flow, acfm35,925 Total Pressure, in. WG.3.15 CodeAMCA and AFBMA2)MotorsQuantity per fan1 Size75 hp TypeHorizontal induction Electrical Characteristics460V, 60 Hz, 3 phase InsulationClass RH EnclosureTEAO CodeNEMA WSES-FSAR-UNIT-3 TABLE 9.4-19 Revision 8 (5/96)DESIGN DATA FOR CONTROL ELEMENT DRIVEMECHANISM (CEDM) COOLING SYSTEMA.Exhaust Fans IdentificationE-16(3A), E-16(3B),E-16(3C), E-16(3D)1)FansQuantity4 TypeCentrifugal, directdriveAir flow, acfm/fan41,430Static Pressure, in. WG./fan28.6CodeAMCA and AFBMA2)MotorsQuantity per fan1Size250 hp TypeHorizontal inductionElectrical Characteristics460V, 60 Hz, 3 phaseInsulationClass F or HEnclosureTEFCCodeNEMAB.Cooling CoilQuantity, total2 banks of 2 coilsTypeComponent CoolingWater, Finned TubeMaterialCopper WSES-FSAR-UNIT-3TABLE 9.4-20DESIGN DATA FOR ANNULUS NEGATIVE PRESSURE SYSTEM (ANPS)1)Exhaust Fans IdentificationE-19(3A), E-19(3B)Quantity2TypeCentrifugal, directdriveAir flow, each acfm500 Static Pressure in. WG.13.84 CodeAMCA and AFBMA2)MotorsQuantity per fan1 Size3 hp TypeHorizontal inductionElectrical Characteristics460V, 60 Hz, 3 phaseInsulationClass F EnclosureTEFC CodeNEMA WSES-FSAR-UNIT-3TABLE 9.4-21 (Sheet 1 of 3)COMPARISON OF NORMAL VENTILATION SYSTEM AIR CLEANING UNITWITH REGULATORY GUIDE 1.140 (MARCH, 1978) RegulatoryPosition Item Waterford 3 System Design Features C.1.aThe system has been designed to maximum anticipated tem-perature, pressure and radiation levels and the cleanup system has been designed for continuous operation for the expected life of the plant.C.1.bThe normal ventilation exhaust system is not located in ahigh radiation area.C.1.cThe system complies with this regulatory position.C.1.dThe system complies with this regulatory position.C.2.aThe normal ventilation exhaust system is not redundantand is not designed to seismic Category 1 requirements, however, it is provided with redundant exhaust fans which assure continuous system operability. The filter train consists of the following sequential components:a)One bank of medium efficiency filters (90 cells) b)One bank of HEPA filters (90 cells) c)Activated charcoal adsorber.

d)Exhaust air fans and ductwork and instrumentation.

The system complies with this regulatory position to theextent described.C.2.bThe 30,000 ft 3/min limitation was based on presumedinability to generate sufficient quantities of dioctylphtalate (DOP) to perform an integrated leak test onlarger HEPA filter banks. Testing companies state that DOP generators are available in capacities suitable for testing this system.Access, service platforms and the design adequatelyfacilitate filter changeout and testing.C.2.cThe system complies with applicable sections of USAECReport, ORNL-NSIC-65, 1970 edition.

WSES-FSAR-UNIT-3TABLE 9.4-21 (Sheet 2 of 3) Revision 2 (12/88) RegulatoryPosition Item Waterford 3 System Design Features C.2.dThe system filter housing is leak tested in place untilthe test criteria of an allowable leak rate of 38.5

ft 3/min is satisfied. The system is designed withprovisions for accessibility and ease of maintenance and is consistent with the ALARA guidelines set forth in Regulatory Guide 8.8.C.2.eThe system complies with this regulatory position.C.2.fThe system will comply with in place leakage testingcriteria of Section 4.12 of ANSI N509-1980 and Section 6 of ANSI N510-1980.C.3.aThe system complies with this regulatory position.C.3.b.The normal ventilation exhaust system complies with thisregulatory position.C.3.cThe normal ventilation exhaust system complies with thisregulatory position. (See response to C.2.f above.)C.3.dThe filter and adsorber banks are arranged in accordancewith the recommendations of USAEC Report, ORNL-NSIC-65, 1970 edition. ERDA 76-21 publication was released after the design of the System.C.3.eThe system filter housing and all appurtenances are con-structed in accordance with the provision of Section 5.6 of ANSI N509 - 1976.C.3.fThe system complies with this regulatory position.C.3.gThe system complies with this regulatory position.

C.3.hThe system complies with this regulatory position.C.3.iThe system complies with this regulatory position.

C.3.jThe system complies with this regulatory position.

C.3.kThe system complies with this regulatory position.

C.3.lThe system complies with this regulatory position.

WSES-FSAR-UNIT-3TABLE 9.4-21 (Sheet 3 of 3) Revision 2 (12/88) RegulatoryPosition Item Waterford 3 System Design Features C.4.aAccessibility of components and maintenance has been con-sidered in the design of the Exhaust System filtration and adsorption unit in accordance with Section 4.7 of ANSI N509-1976 and Subsection 2.3.8 of ERDA 76.21.C.4.bThe system complies with this regulatory position.

C.4.cThe system complies with this regulatory position.

C.4.dThe installation of filters and adsorber charcoal will bedelayed until after completion of construction to comply with this regulatory position.C.5.aThe system complies with this regulatory position.C.5.bThe system will comply with the provisions of Section 9"Industrial Ventilation" and Section 8 of ANSI N510-1980.C.5.cThe system complies with this regulatory position.C.5.dThe system complies with this regulatory position.C.6.aThe system complies with this regulatory position.

C.6.bThe system complies with this regulatory position.