ML20083C687
| ML20083C687 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/14/1983 |
| From: | Johnston W Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20079F427 | List:
|
| References | |
| FOIA-84-35 NUDOCS 8312230278 | |
| Download: ML20083C687 (12) | |
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UNITED STATES g.., f {
NUCLE AR REGULATORY COMMISSION I7(
- f.. E WASWNGTON, D. C. 20555
%,y..EN/h/
DEC 141983
- * * *dEMORANDUM FOR: Thomas Novak, Assistant Director for Licensing Division of Licensing FROM:
William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
SUBJECT:
FIRE PP'.'TECTION SUPPLEMENTA'. SAFETY EVALUATION REPORT -
6 5 1-4 Plant Name: Shecron Harris Nuclear Power Plant Units 1-4 Docket Nos.:
50-400/403 Milestone No.:
N/A Licensing Branch:
LB #3 Prcject Managers:
B. Buckley, J. Holonich CMEB Reviewer:
R. Eberly Requested Completion Date:
ASAP N
Review Status:
5 open items In our SER, we identified 21 open items.
By letter dated October 14, 1983, the applicant prov.ded additional information concerning the fire protection program.
Our revised SER which considers this information is enclosed.
The following are the remaining fire protection open items:
1.
Fire Doors BTP CMEB 9.5-1 Section C.5.a 2.
Safe Shutdown BTP CMEB 9.5-1 Section C.5.b 3.
Alternate Shutdown BTP CMEB 9.5-1 Section C.S.c 4.
Hydrogen Piping BTP CMEB 9.5-1 Section C.S.d 5.
Detection in Control Room BTP CMEB 9.5-1 Section C.7.b Cabinets William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
Enclosure:
As stated
Contact:
R. Eberly x24302 cc:
R. Vollmer D. Eisenhut V. Benaroya R. Ferguson
- 0. Parr N. Wagner B. Buckley J. Holonich J. Taylor S. Pawlicki T. Sullivan R. Eberly
-S. Ebneter, Region I T. Conlon, Region II C. Norelius, Region III G. Madsen, Region IV P.
Stornhorn
__ DAMCJL 7fMRegion VXA Copy Ha5 Been Sent to PDR
7
,1 CHEMICAL ENGINEERING BRANCH / FIRE PROTECTION SECTION FIRE PROTECTION SUPPLEMENTAL SAFETY EVALUATION REPORT SHEARON HARRIS, UNITS 1 & 4
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9.5 Other Auxiliary Systems 9.5.1 Fire Protection The staff has reviewed the fire protection program for conformance with SRP 9.5.1 (NUREG-0800), which contains, in BTP CMEB 9.5.1, the technical require-ments of Appendix A to BTP AS8 9.5-1 and Appendix R to 10 CFR 50.
Because the applicant has compared the Shearon Harris program to the latter guidelines, this report also references these guidelines.
In response to a staff request for an evaluation of the Shearon Harris fire protection p.rogram against the guidelines of Appendix A to BTP ASB 9.5-1, the applicant pr'pvided an evaluation against the requirements of Appendix R to 10CFR50anyBTPCMEB9.5-1(NUREG-0800).
By letter dated October 14, 1983, the applicant provided additional information.
As part of its fire protection review, the staff will visit the plant site to examine the relationship of safety-related components, systems, and structures in specifip plant areas to both combustible materials and to associated fire
-detection and suppression systems.
However, the site visit has not yet been conducted because the construction has not progressed to a level where such a visit woul'd be meaningfui.
The staff review includr evaluation of the automatic and manually operated water and gas suppressica systems, the fire detection systems, fire barriers, fire doors and dampers, fire protection administrative controls, and the fire
-brigade size.
The objective of the review is to ensure that in the event of a fire, personnel and plant equipment would be adequate to safely shutdown the reactor,-to malotain the plant in a safe shutdown condition, and to minimize the release of} radioactive material to the environment.
j BecauseUnitsband2areofthesamedesign(exceptasnoted),thecomments made in this report appy to all units.
Our consultant, Gage-Babcock and Associates, Inc., participated in the review of the fire protection program.
Shearon Harris SER 9-46 i
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The staff will require that the fire protection program be operational before initial fuel loading.
9.5.1.1 FireProtectionProgramRequirements Fire Protection Program The fire protection program is described in the applicant's fire protection evaluation report and letter dated October 14,.1983.
The program establishes policy for the protection of structures, systems, and components important'to safety.
The applicant's program conforms to the technical requirements in BTP CMEB 9.5-1 Section C.1.
The staff finds that the fire protection program meets the guidelines of BTP CHEB 9.5-1, Section C.1, and is, therefore, acceptable.
Fire Hazards Analysis The applicant's fire hazard analysis specified the combustiole materials present in fire areas, identified safety-related equipment, determined the consequences of a fire in regard to safe shutdown capability, and summarized available fire protection in accordance.with BTP CMEB 9.5-1, Section C.I.b.
Alternative shut-down capability has been provi fed for the control room and cable-spreading room.
i GDC 3 requires:
" Fire fightir.g systems shall be designed to assure that rupture or inadvertent operation does c.ot significantly impair the safety capability of those structures, systems and components."
l To satisfy this requirement the applicant has' designed components required for j
hat shutdown so that rupture or inadvertent operation of fire suppression y
systems will not adversely affect the operability of these components.
I l
l-The ' evaluation of the co*nsequences of inadvertent operation of the fire sup-l pression system is addressed i.n the description of each system used in safety-related areas.
These systems > require two steps for the release of water, thus
. preventing any potential misoperation, mechanical damage, or premature discharge
(
of water.
Further, equipment that could be adversely impacted by. automatic water suppression system is provided with watertight enclosures or installed on pedestals and/or racks.
Motors are totally enclosed, and motor control centers and power centers are installed on pedestals.
Water seals will be provided inside conduit entering power centers and motor control centers.
Based on its review, the staff finds that the mechanisms by which fire and fire fighting systems may cause the simultaneous f&ilure of redundar.t or diverse trains have been adequately considered in the design.
Therefore, the staff L
concludes that the fire hazards analysis has been performed in accordance with the guidelines of Section C.1.b of BTP CMEB 9.5-1 and is acceptable.
l
-9.5.1.2 Administrative Controls L
The administrative controls for fire protection consists of the fire protection program and organization, the fire brigade training, the controls over combusti -
l bles and ignition sources, the prefire plans and procedures for fighting fires, and quality assurance.
The applicant's administrative controls program is described in a letter dated October 14, 1983.
Based on its review, the staff i
Shearon Harris SER 9-47
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1 f,inds that the applicant's program is in conformance with BTP CMEB 9.5-1 Sec-i tion C.2, and is, therefore, acceptable.
9.5.1.3 Fire Brigade The fire brigade will consist of five persons, three of whom are knowledgeable about the effects of fire on plant operation and safe shutdown capability.
The brigade leader will have an operator's license or will demonstrate equivalent knowledge of safety related systems.
Full protective clothing will be provided for the brigade, including 10 sets of self-contained breathing apparatus.
Spare cylinders for each set and an tdditional 6-hour supply will be located on site.
The team leader will have access to the key locker to gain access t
'cked fire doors.
Based on its review, the staff concludes that the applicant's fire brigade is in compliance with BTP CMEB 9.5-1, Section C.3, and is, therefore, acceptable.
Fire Brigade training is evaluated in Section 13.2.2 of this report.
9.5. 1.4 General Plant Guidelines Building Design Fi.re areas are defined by walls and floor / ceiling assemblies.
Walls that sepa-rate buildings and walls between rooms containing safe shutdown systems are 3-hour-fire rated assemblies.
In cases where the fire rating is less than 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, the staff has evaluated each area with respect to its fuel load, fire suppression and detection systems, ard proximity to safe shutdown equipment to determine if the fire-rdted assemblies provided are adequate for the areas effected and meet Section C.S.a of BTP CMEB 9.5-1.
Based on this evaluation, the staff finds that the protection provided meets-the guidelines and is, therefore, acceptable.
t 4
The applicant will provide penetration 2erls for all penetrations of fire rated walls or floor / ceiling assemblies.
ThepEnetra'tio'nsealshavebeensubjected t qualification tests using the time-temperature curve specified by Standard l
E-119 of the American Society for Testing and Materials (ASTM), " Fire Test of l
Building Construction and Materials," and meet the acceptance criteria in Sec-l tion C.S.2.3 of the staff's guidelines.
The staff finds this acceptable.
I The applicant will provide 2-hour-rated fire barriers for the plant enclosed l
I stairwells.
Based on its review, the staff finds the stai well protection is in compliance with Section C.5.c of BTP CMEB 9.5-1, and, therefore, acceptable.
Door openings in fire-rated barriers are not provided with Underwriters Labora-l tory (UL)-labeled fire door assemblies that have ratings commensurate with the fire ratings of the walls in which they are installed.
The staff will require l
the applicant to either:
Shearon Harris SER 9-48
(1)
Have a nationally recognized testing laboratory perform an engineering review of the manufacturer's certified doors and door frames and certify that the door and door frames provide the required fire re'sistance rating, or (2)
Test a replicate "as-installed" ' door assembly by a nationally recognized testing laboratory to determine the door's rating, or (3)
Replace the manufacturer's labeled doors and door frames with UL-rated items Except for the ductwork from the HVAC room to the tank area at elevation 286 feet, ventilation ducts that penetrate fire barriers are provided with fire drmpers.
The fire dampers will be UL labeled and installed according to the manufacturer's directions.
Tha staff finds this acceptable because the. low combustible loading in the tank.
area is low.. Three-hour fire dampers will be provided in all 3-hour-fire-rated barriers.
Th.e staff concludes that the fire dampers will be provided in accord-ance with the guidelines of BTP CMEB 9.5-1, Section C.5.,a and are, therefore, acceptable.
I Thermal insulating materials are noncombustible.
They hpve flame-spread and smoke-developed ratings of 50 or less.
Interior walls and structural compo-nants, radiation shielding materials, and sound proofing and interior finishes i
aro noncombustible or are listed by a nationally recognized testing laboratory, such as Factory Mutual (FM) or UL, or have a f. lame spread, smoke, and fuel contribution of 25 or less.
The staff finds this is in accordance with the guidelines of BTP CMEB 9.5-1. Section C.5.a and, therefore, acceptable.
ip Mstal roof deck construction is not used.
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i Transformers installed inside buildings are either air cool led, of the dry type, or are insulated and. cooled with a noncombus;tible liquid. ;The main and plant sarvices transformers are more than 50 feet from any buildi:ngs and are separated by 2-hour fire walls.
The staff finds this meets the guide' lines of BTP CMEB a
9.5-1, Section C.5.a, and is, therefore, act:eptable.
i Floor drains are provided to remove fire fighting water from areas co'ntaining
-safety-related equipment, and tn prevent ex:ess fire fighting water from flood-
.ing adjacent areas containing safety-related equipment.
The staff finds that this meets the guidelines in Section C.S.a of BTP CMEB 9.5-1, and is, there-fore, acceptable.
Safe Shutdown Capability Tha staff review of safe shutdown capability is ongoing and will bs addressed in a supplement to this SER.
Alternate or Dedicated Shutdown Capability The staff review of alternate or dedicated shutdown capability is ongoing and will be addressed in a supplement to this SER.
Sh: aron Harris SER 9-49
Centrol of Combustibles Safety-related systems have been isolated or separated from combustible mate-rials as much as possible.
The. storage of flammable liquids complies with Standard 30 of the National Fire Protection Association (NFPA 30).
Compressed
' gases are stored outdoors.
The applicant states that hydrogen lines do not pass through are'as housing safety-related equipment.
The staff will verify this statement and report on this11ssue in a supplement to-this SER.
Electrical Cable Construction. Cable Trays, and Cable Penetrations Cable trays are of all metal construction.
Electrical cable construction gen-erally passes-the IEE-383-1974 flame test.
Only lighting and communications cables do not pass this test; however, because these esbles are routed exclu-
- sively in conduit and are not routed with cables for safety-related systems, the staff finds this acceptable.
The cables are designed to allow wetting down with fire suppression water without electrical faulting.
Safety related cable trays outside the cable spreading room are separa~ted from l
_ potential fire exposure hazards by 3-hour-rated fire barriers.
Automatic sprinklers are provided 'for the protection of cable trays, in accord-ence with Section C.S.e of BTP CMEB 9.5-1.
V$ntilation Special ventilation systems in the plant are designed specifically to exhaust
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smoke or other products of combustion from the control room, electric equipment protection rooms, cable %preading rooms, and switchgear roums.
In other plant creas, normal plant ventilation system will be utilized to exhaust smoke.
The power supply and controls for the ventilation systems for cables and systems needed for safe shutdown are not-run outside the fire area served by the system.
- The applicant has separated redundant cables so that a single fire will not disable both trains of ventilation needed for safe-shutdown equipment.
Air
. intake and exhaust ventilation dampers in areas protected by total flooding gas extinguishing _ systems are provided with mechanisms that will close them upon cctuation of the suppression system.
Stairwells are designed to minimize smoke infiltration.during a fire.
Charcoal filters have been provided with water spray systems.in accordance with RG 1.52.
Based on its review, the staff concludes that the ventilation systems meet Stction C.5.f of BTP CMEB 9.5-1, ano are, therefore, acceptable.
Lighting'and Communications The applicant is providing emergency lighting for all areas needed for safe shutdown, and for access and egress thereto.
Except for the control room, auxiliary centrol room, and computer rooms, 8-hour self-contained battery-powered lighting units will be provided.
In the control room, auxiliary
. control room, and computer rooms, the plant de emergency lighting system will i
Shearon Harris SER 9-50
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b2 used.
Upon loss of normal power, the de amergency lighting system is auto-
'l catically energized.
The cables for the emergency lighting system have been separated so that a single fire will not cause loss of-all lighting capability in the three areas served by the de emergency lighting system.
The staff considers this an acceptable deviation from the guidelines.
y The source of power for the de emergency lighting system, which is automatically energized upon loss of either train A'or B of the normal / emergency lighting system, is the station 125-V battery (one per unit).
Operation of the de emer-
- g:ncy lighting system is annunciated in the control room to prevent accidental d2pletion of the battery.
Based on its review, the staff concludes that the plant emergency lighting system, with the acceptable deviation, meets Section C.S.g, and is, therefore, teceptable.
The applicant has provided a fixed communication system independent of the normal plant system.
A portable radio communications system will be provided for use by the fire brigade and other operations personnel.
These systems are designed so that the failure of one module will not result in the failure of the entire communications system.
i Based on its review, the staff finds that the communication system meets BTP CMEB 9.5-1, Section C.S.g and is, therefore, acceptable.
- 9. 5.1. 5 Fire Detection and Suppression Fire-Detection A fire detection system is provided for all areas containing safety-related equipment and for all areas that present a fire exposure to safety-related
' equipment.
i The system complies with NFPA 72D foi a Class A system,~with detectohs installed 3
in accordance with NFPA 72E.
Pcwer for the early warning fire and smoke detection systems is provided from a n:n-Class 1E motor control center.
In the event of loss of offsite power, the system is powered by the station 250-V de batteries, which are capable of supply-ing power for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Tha staff finds that primary and secondary power supplies for the fire detection system satisfy the provisions of Section 2220 of NFPA 72D and are, therefore, ccceptable.
Based on these considerations, the staff concludes ttiat the fire detection system meets BTP CMEB 9.5-1, Section C.1.a., and is, therefore, acceptable.
Fire Protection Water Supply System Th2 water supply system consists of two fire pumps:
one pump is electrically driven and.the other is diesel-engine driven.
Each fire pump is separately ccnnected to a buried water main loop around the plant.
Each fire pump has a Shearon Harris SER 9-51
rated capacity of 2500 gpm at 125 psig.
The fire pumps and controllers are UL listed and FM approved.
The fire pump installation has been designed and in-stalled and will be tested in accordance with NFPA 20.
The fire pumps are located in the emergency service-water screening structure.
Pressure for the fire protection water system is provided by a jockey pump.
The fire pumps are separated by the intake water structure.
A single fire is therefore unlikely to cause damage to both pumps.
The source of water for the fire protection system is the fresh water supply in the auxiliary reservoir.. The supply of wtaer is capable of supplying the greatest system demand (2000 gpm) plus 1000 gpm for hose streams for a 2-hour p::riod..
Yerd hydrants are provided at intervals of 250 feet along the fire protection water supply loop.
The lateral to each yard hydrant is provided with a key-
' cperated isolation valve to facilitate hydrant maintenance and repairs without shutting down any part of the fire water supply system.
Standard hose houses tre provided at each hydrant in accordance with NFPA 24.
Approved post-indicator " sectional control valves are pr vided to isolate portions of the underground main for maintenance or repair without shutting off the supply to primary and backup fire suppression systems that serve areas ccntaining or exposing safety-related systems.
Electrical supervision has been provided for all valves in the fire protection water supply system.
4 Based on its review, the staff concludes that the fire protection water supply system meets Section C.6.c of BTP CMEB 9.5-1, and is, therefore, acceptable.
l Sprinkler and Standpipe Systems
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The wet pipe sprinkler systems, deluge systems, and pre-acticn systems meet the provisions of NFPA 13 and NFPA 15.
The areas equipped with water suppression l
systems are listed in FSAR Tables 9.5.1-3 through 9.5.1-5.
Each automatic sprinkler system and interior hose standpipe is supplied through s:parate connections from the yard main or from the internal cross connections through buildings to ensure that no single failure in the water supply system
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will impair both the primary and backup fire protection in building areas.
l Each sprinkler and standpipe system connection to the distribution system is equipped with an indicating gate valve, so that groups of sprinkler systems and/or manual hose stations can be isolated without interrupting the. supply to other sprinkler systems and manual hose stations connected to the same header.
t Based on its evaluation, the staff finds that sprinkler and standpipe systems htve been provided in accordance with its Section C.G.(c) of BTP CMEB 9.5-1, and are, therefore, acceptable.
Manual hose stations are located throughout the plant in accordance with NFPA 14.
Standpipe system piping for hose stations protecting safe shutdown equipment has been analyzed for SSE loading and is provided wit.. seismic sup-i ports. -The staff concludes that the design of the standpipe syst a piping Shearon Harris SER 9-52
m:ets our guidelines in Section C.6.c of BTP CMEB 9.5.1 and is, therefore, acceptable.
Halon Suppression Systems A Halon 1301 system, designed and installed in accordance with NFPA Standard 12A, will be provided for the records storage area in the administration build-ing.- The staff concludes that the Halon system meets Section C.6.d of BTP CMEB 9.5-1, and is, therefore, acceptable.
Partable Extiaquishers Portable fire extinguishers are provided in conformance with the guidelines of NFPA 10.
Based on its review, the sta(f concludes that these extinguishers cret BTP CMEB 9.5-1, Section C.6.f, and are, therefore,
, acceptable.
9.5.1.6 Fire Protection of Specific Plant Areas containment Cable fire hazards within the containment area are separated by structural barriers and physical separation.
Automatic multicycle sprinkler systems are provided in the electrical cable trays, the electrical penetration areas, and over the charcoal filter housings, actuated by thermal detectors.
Ionization
~ type smoke detectors are provided over the major electrical cable trays.
The reactor coolant pumps will be equipped with an oil collection system.
The i
j; cil collection system will be designed and installed so that failure will not p
lead to fire during normal or design basis accident conditions and so that
'ther's will be reasonable' assurance that the system will withstand the safe shutdown earthquake.
i '
The collection systems will be capable of collecting lube oil from all potential pressurized and unpressurized leakage sites in the reactor coolant pump lube oil systems.
Leakage will be collected and drained to a vented closed container that can hold the entire lube oil system inventory.
Ba' sed on its review, the staff concludes that fire protection inside containment meets our guidelines in Section C.7.a of BTP CMEB 9.5-1, and is, therefore, teceptable.
l 4
Centrol Room The control room complex is separated from all other areas of the plant by 3-hour-rated assemblies.
Peripheral rooms in the control room complex consist l
of offices.
Each room is separated from the control room by 1-hour-fire-rated barriers.
Smoke detectors that alarm and annunciate in the control room panel are provided in each room.
l All cables entering the control room terminate there, No cables are routed through the control room from one area to another.
There are no raised floors l
l in the control rocm.
There is a trench under the HVAC control, which is about l
Shearon Harris SER 9-53 m
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Il feet x 2 feet x 8 inches.
The fire loading is low, less than 200 Btu /ft,2 A suppression system is not provided.
There are redundant safety related radiation monitoring cables, installed in conduits above the suspended ceiling.
The control room suspended ceiling is the aluminum luminous louver type, egg crate construction.
A perforated duct located above the hung ceiling intro-duces air into tne control room.
The space above the hung ceiling does not contain any' cable tray, only conduits.
Smoke detectors will be provided on the south side of the control room rei'n-forcad concrete ceiling, as well as below the hung ceiling.
B:cause of the low fuel loading and the small size of trench, combined with the installed early warning smoke detection and continuous manning of the control room, the staff finds the installation of conduits in the control room ceiling, the omission of a suppression system in the trench, and the omission of a sprinkler system in the peripheral rooms acceptable deviations from Section C.7.b of BTP CMEB 9.5-1.
Ionization smoke detectors have been installed in the control room, but not inside the individual cabinets and consoles within the control room.
The staff will require the applicant to provide cabinet detectors in accordance with Saction C.7.b of BTP CMEB 9.5-1.
Cable' Spreading Room The cable ~ spreading room is separated from the balance of the plant by 3-hour-fire-rated walls and floor / ceiling assembi f es.
All penetrations through fire-rated barriers are fitted with 3-hour-fire-rated dampers and/or 3-hour-fire-rated penetration seals g Separate cable spreading rooms have been provided for each division of redundant rafe shutdown. system circuits.
There are several redundant train B cables in the train A cables spre'ading i
1 rcom.
The train B cables are enclosed in a 1-hour-rated barrier.
Because a
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detection and suppression system has been installed in the area, the staff finds this an. acceptable deviation from its guidelines.
The primary fire suppression system in the cable spreading rooms is an auto-matic pre-action sprinkler system with fusible-type sprinkler heads.
Electrical cabling is designed to allow wetting down without electrical faulting.
4 Based on its review, the staff concludes that the fire protection provided for othe cable spreading rooms, with the acceptable deviation, meets Section C.7.c cf BTP CMEB 9.5-1, and is, therefore, acceptable.
Switchgear Rooms The Division A and Division B switchgear rooms are separated from each other and from other plant areas by 3-hour-fire rated walls and floor / ceiling i
assemblies.
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4 Automatic fire detection is provided by ionization smoke detectors.
Manual.
orotection is provided by standpipe hose stations and portable extinguishers.
Floor drains have been provided in the switchgear rooms.
Based on the above evaluation, the staff concludes that the protection of the switchgear rooms is in accordance with Section C.5.a of BTP CMEB 9.5-1, and is, l
therefore, acceptable.
R? mote Safety-Related Panels 4
i Areas remote from the control room that contain safety-related panels are pro-vided with detectors which alarm locally and in the control room.
Panels pro-viding remote shutdown _ capability are located in the auxiliary control panel rcos, which is separated from other plant areas by barriers having a fire resistance rating of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.
Panels providing remote shutdown in_the auxiliary centrol panel room are electrically isolated and are connected to redundant transfer panels, each of which is located in a separate fire area.
Ionization detectors in the auxiliary control panel room alarm locally and in the control room.
Portable extinguishers and manual hose stations are available in the area.
Redundant safety-related panels required for safe shutdown are separated.
1 Based on its review, ithe staff concludes the. fire protection for remote safety-related panels meets Section C.7.f of BTP CMEB 9.5-1, and is, therefore,
's
_ acceptable.
Stufety-Related Battery Rooms 1 m 7 The battery rooms are separated from each other and from the balance of the plant by 3-hour-fire-rated barriers.
Ionization smoke detection systems are provided in each battery room.
Hose stations and portable fire extinguishers are available in the areas for manual fire suppression.
The ventilation system is designed to maintain the hydrogen levels below 2%.
Loss of ventilation alarms have been provided for each battery room.
Based on the abcVe evaluation, the staff finds that the protection provided for j
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the battery roots is in accordance with Section C.7.g, and is, therefore, acceptable.
s Emergency Diesel Generator Rooms Each diesel generator and its day tank are separated by 2-hour-fire-rated bar-riers.
Each diesel fuel oil day tank room is protected by an automatic multi-cycle sprinkler system.
The system is activated by heat detectors.
Additional carly warning detection is provided by ionization smoke detectors and flame i
'dstectors.
t The day tanks are sized to hold 3000 gallons of diesel fuel instead of the maximum of 1100 gallons. recommended by the staff guidelines.
Because each A
3000 gallon diesel fuel oil day tank is located in a separate enclosure that is designed with walls, floor', and ceiling that have a 3-hour-fire-resistive rating and is sized to contain 110% of the total contents of the tank,-the staff finds this an acceptable deviation.
The staff concludes that with the acceptable deviation, the protection provided for the diesel generator rooms meets Sec-tion C.7.i, and is, therefore, acceptable.
Shearon. Harris. SER 9
5 5
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Other Plant Areas.
l li ant's fVre hazards analysis addressed othtr plant areas not spe The dPP ical1y discussed in this report.
The staff finds that the fire protectic areas is in acordance with BTP CMEB 9.5-1 and is, therefore, accep.
- 9. 5. 'l. 7 Summary a Deviations from CMEB 9.5-1 l' '
ical reciremerits of Appendix R to 10 CFR 50 and Appendix A to S The te have bep included in BTP CHEB 9.5-1.
The f?llowing deviations
^
6TP CMEB 9.5-1 have been app.oved:
the guidelines p non-1EEE g -rated cables for lighting BTP CMEB 9.5-1 Section (1) and commugations systems 1
(2) fixed eme rncy lighting BTP CMEB 9.5-1 Section
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(3) 3000 gat-capacity diesel generator BTP CMEB 9.5-1 Section day tank
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conduitj the control room ceiling BTP CMEB 9.5-1 Section t
(4)
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Tack Gkiomatic sprinklers in the BTP CMEB 9.5-1 Section (5) g contropm peripheral rooms s
1 11 Tack ottomatic suppression in BTP CMEB 9.5-1 Section 1
(6)
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conto 1om. trench
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n of redundant cables in the BTP CMEB 9.5-1 Section f.
i.
O) 3 r room by 1-hour barriers, I
/
s, and dethetors
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l 3, flo.g are the fire protection open items:
doors BTP CMEB 9.5-1 Section
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i shetdown BTP CMEB 9.5-1 Section g
s
'g rnate' shutdown BTP CMEB 9.5-1 Sectidn A,.
ogen line piping BTP CMEB 9.5-1 Section f 6ction in control room cabinets BTP CMEB 9.5-1 Section f
mmunication Systems e
4 SheiLHarrisSER 9-56 l'
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