ML20050B950
| ML20050B950 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 03/31/1982 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20050B942 | List: |
| References | |
| NUDOCS 8204070606 | |
| Download: ML20050B950 (55) | |
Text
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LIMERICK GENERATING STATION UNITS 1 & 2 FIRE PROTECTION EVALUATION REPORT 1
REVISION 1 PAGE CHANGES i
The attached Revision 1 pages are considered part of a controlled copy of the Limerick Generating Station FPER.
This material should be incorporated into the FPER by following the collating instructions below:
Remove Insert Dated i
i 2/82 3-1 & 2 3-1 & 2 2/82 3-3 & 4 3-3 & 4 2/82 through through 3-27 & 28 3-27 & 28 2/82 3-29 & 30 3-29 & 30 2/82 3-47 & 48 3-47 & 48 2/82 3-69 3-69 & 70 2/82 3-71 & 72 2/82 through 3-87 & 88 2/82 O
8204070606 B20331 PDR ADOCK 050003gg F
LGS FPER
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TABLE OF CONTENTS CHAPTER 1 INTRODUCTION CHAPTER 2
_ FIRE PROTECTION SYSTEM DESCRIPTION 2.1 Fire Protection Water Supply Systems 2.2 Wet Pipe Sprinkler Systems 2.3 Pre-action Sprinker Systems 2.4 Deluge Systems 2.5 Water Spray for Charcoal Filters 2.6 Wet Standpipes and Mose Stations 2.7 Foam Extinguishing S stem 3
2.8 Low Pressure Carbon Dioxide System 2.9 Halon Extinguishing Systems 2.10 Portable Fire Extinguishers 2.11 Fire and Smoke Detection System CHAPTER 3 COMPARISON BETWEEN LGS FIRE PROTECTION PROGRAM AND NRC GUIDELINE DOCUMENTS 2.1 Appendix A of NRC Branch Technical Position ASB 9.5-1 3.2 Appendix R of 10 CFR Part 50 l
CHAPTER 4 EVALUATION OF POTENTIAL FIRE HAZARDS 4.1 Scope of Evaluation i
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CHAPTER 3
(_,
COMPARISON BETWEEN LGS FIRE PROTECTION PROGRAM AND NRC GUIDELINE DOCUMENTS l
3.1 APPENDIX A OF NRC BRANCH TECHNICAL POSITION ASB 9.5-1 l
The purpose of this section is to compare the fire protection l
l provisions of Limerick Generating Station (LGS) Units 1 and 2 i
with the guidelines in Appendix A to Branch Technical Position ASB 9.5-1.
i To identify areas of potential impact and to facilitate i
comparison, a matrix addressing each guideline of Appendix A and relating to the plant systems, equipment, and components, is included as Section 3.1.1.
The matrix has extracted all l
l suggested guidelines from Appendix A and given each an item number 1 through 210.
Each item has condensed a particular guideline and makes reference to the page and paragraph in Appendix A where that guideline can be found.
The general degree of conformance to the guideline is indicated in the " comparison" column, using codes defined as follows:
I\\
C indicates conformance to the ouideline or
's conformance to its intent.
Substantiating statements are included as part of the matrix or the manner of conformance is discussed in Section 3.1.2.
l l
indicates conformance to the guidelines by AC alternate means or methods.
The manner of conformance is included in the matrix or discussed l
in Section 3.1.2.
indicates that design changes, means, or methods WC are planned in order to conform, or conform to the intent of the guideline.
The planned design changes, means, or methods and the manner of conformance are discussed in Section 3.1.2.
l indicates that the plant is not in conformance and NC no design changes are planned.
The basis for non-conformance to the guideline is included in the matrix or discussed in Section 3.1.2.
l i
indicates that the guideline is not applicable to NA Limerick Generating Station Units 1 and 2.
Substantiating statements are included as part of the matrix in Section 3.1.1.
l g
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LGS FPER In the " remarks" column, additional information is provided to explain or expand on the degree of conformance.
Alternatively, l
reference may be made to Section 3.1.2 for other sections in this report) for a more detailed discussion.
The item numbers in l
Section 3.1.2 correspond to those in Section 3.1.1.
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m LGS FPER SECTION 3.1.I DETAILED t0MPARISON %.
APPEICIX A CF BRANCH TECHNICAL POSITION ASB 9.5-1 NO.
APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON RE.W ES Pa w Item cverall Fequirements of Nuclear Plant ttre Protection Program 1.
Management responsibility f or 1
A.1 WC See rote 1 fire protection program and delegation of authority.
2.
Qualification requirements for fire 1
A.1 WC Qualified fire grotectAon engineers of protection engineers.
the Bechtel Power Corporation provided assAstance An the development of the design and equipnent specification for the fire protection system.
3.
Training of the fire fightir.g and 1
A.1 WC See note 1 operating crew.
4.
EesponsALilities of the fire pro-1 A.1-WC See note 1 tection staf f.
i 5.
The fire protection program should 2
A. 2 C
See Chapters e and 5 be based on evaluation of potential fare hazards and the effect of postulated fires on safety-related systems and radioactivity releases.
6.
Backup fire suppresteion capabiiity 2
A. 3 C
All automatic fire suppression systems should be provided.
are backed up by two methods of manual exting uishment (hose stations and portable extinguishers).
7.
. Primary ar.d backup fire suppression 2
A. 4 C
See SectAon 3.1.2 l
capability should satisfy the single failure criterion.
8.
Effects of lightning strikes should 3
A. 4 C
LAghtning protection is provided per l
be included in the fire protection NFPA No. 78.
program.
i I
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LGS FPER N3.
APPENDIX A GUIDELINE APPEtOIX A LOCATION CCMPARISGN RIMARTS Pa ge Item 9.
Failure or inadvertent operation of 3
A. 5 NC See Section 3.1.2 l
fire suppression systems should not incapacitate safety-related systems.
10.
Fire supprebalon systems 3
A. 5 C
toderate-energy leakage cracks an f are that are pressurized during normal suppression system paping are analyzed plant operation should meet the in accordance with EIP APCSB 3-1.
guidelines specified in BTP APCSB 3-1.
11.
The fire protection program for new 3
A. 6 C
Ihe fire potection program for the f uel areas should be fully opera-new f uel area will be completed and tional bcfore fuel is received at fully op rataonal before fuel is the site.
received at the site.
12.
The fire protection program should be 4 A.7 C
The fire Notection program for each f ully operational prior to initial reactor unit will be completed and iuel laading.
fully operational prior to initial fuel loading.
13.
Multiple re actor unit site fire 4
A. 8 WC See Section 3.1.2 l
protection program.
l ie.
Simultaneoas fires in more than one 4
A.9 C
See Section 3.1.2 l
reactor unit need not be postulated.
l Mainistrative Procedures. Cont rols, and Fire Brigade 15.
Provision of administrative 4
B.1 WC See note 1 procedu.'e s.
l 16.
Administrative measures for com-5 B. 2 W
See note 1 l
bustible material storage.
a B. 3 WC See note 1 17.
Management control of normal and abnormal conditions and modifi-cation work to assure adequate f t.e I
protection.
18.
Ignation sources: procedure review 5
B.3.a WC see note 1 and approval, training and eqinp-ping, f ire watch.
19.
Leak testing should use aerosol 6
B. 3. b WC See note 1 techniques rather than open flames or com ustion generated smoxe.
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LGS FPER SECTION 3.1.1 DETAILED COMPAEISON TO APPENDIX A CP BR ANCH TECHNICAL POSITION ASB 9.5-1 NO.
APa>ENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON RE.W FS Pa w Item Cverall Fewuirt ments of Nuclear Plant etre Protection Program 1.
mnagement responsibility f or 1
A.1 WC See note 1 fire protection program and delegation of authority.
2.
Qualification requirements for fire 1
A.1 LC Qualified fire protection engineers of protection eng4r.eers.
tat Bechtel Power Corporation provided assistanco in tie development of the design and equignent specification for the fire protection system.
3.
Training of the fire fighting and 1
A.1 WC Se e no te 1 operating crew.
4.
Respons11.ilities of t14. fire pro-1 A.1 WC See note 1 tection staf f.
5.
The fire protection program should 2
A. 2 C
See Chapters 4 and 5 Le based on evaluation of potential fire hazards and the effect of postulated fires on safety-related systems and radioactivity releases.
6.
Backup fire sappression capability 2
A.3 C
All automatic fire suppression systems should be provided.
are backed up by two methods of manual exting uishment (hose stations and por table extingui N s).
l 7.
Primary ar.d backup fire suppression 2
A. 4 C
See Section 3.1.2 l
capability should satisfy the single failure criterion.
- 8. -
Ef f ects of lightning strikes should 3
A. 4 C
Lightning protection is provided per be included in the fire protection NFPA No. 78.
program.
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LGS FPER NJ.
APPENDIX A GUIDELINE APPE!OIX A LOCATION COMPARISGN REMARES Pa ge Item 9.
Failure or inadvertent operation of 3
A. 5 NC See Section 3.1.2 l
fire suppression systems should not incapacitate safety-related systems.
10.
Fire suppression systems 3
A. 5 C
tuderate-energy leakage cracks in fire that are pressurized during normal suppression system piping are analyzed plant operation should meet the in accordance with BrP APCSB 3-1.
guidelines specified in BTP APCSB 3-1.
11.
The fire protection program for new 3
A. 6 C
The fire gotection program f or the f uel areas shoald 'be fully opera-new fuel area will be completed and tional before fuel is received at fully og.erational before fuel is the site, received at the site.
12.
The fire protection program should be 4 A. 7 C
The fire pLotection program for each fully operational prior to initial reactor unit will be completed and fuel laading.
fully operational prior to initial fuel loading.
13.
Multiple reactor unit site fire 4
A. 8 WC See section 3.1.2 l
protection program.
14.
Simultaneoas fires in more than one 4
A.9 C
he Section 3.1.2 l
reactor unit need not be postulated.
Administrative Procedures, Controls, and Fire Brigade 15.
Provision of administrative 4
B.1 WC See note 1 procedures.
16.
Administrative measures for com-5 B. 2 WC See note 1 bastible material storage.
17.
Management control of normal and 5
B. 3 WC See note 1 abnormal conditions and modifi-cation work to assure adequate fire protection.
18.
Ignition sources: procedure review 5
B.3.4 WC See note 1 and approval, training and equip-ping, fire watch.
19.
Leak testing should use aerosol 6
B.3.b WC Se e note 1 techniques rather than open flames or cot ustion generated smoxe.
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APPENDIX A GUIDEI'NE APFEtOIX A LOCATION COMPARISON REMARES Pa w Item 20.
Combustible material usage:
6 B. 3. c WC See note 1 control and minimization in safety-related areas.
21.
The 6.lant should le self-a.afficient 6
B. 4 WC See note 1 with respect to f are fighting activities, and rely on public fire department only for backup.
22.
Fire brigades: organization, 7
B. 5 WC See note 1 training, and equipping.
23.
Testing and maintenance of fare 7
B. 5. a WC See note 1 protection program.
24.
Training of fire brigade; drills 8
B. S. b WC See note 1 quarterly and with local fire department at least annually.
25.
Training of all shif t members; 8
B. S. c W::
See note 1 coordination with and training of local fire department personnel.
26.
Standards for guidance: NFPA 27, 9
B. S. d WC See note 1 194, 196, 197, 601, and others.
Quality Assurance Procram 27.
QA programs of applicants and 10 C
AC/hC See Section 3.1.2
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contractor.s to assure proger control f of the fire protection program for safety related areas; program under manage-s ment control of the QA organi-0 2ation.
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Protection
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28.
Plant laycac 'sdould be arranget to 12 D.1.a.1 C
Saf ety-related systems are located in isolate saf ety-related systems 'from
.e fire areas separate f rom those unacceptable 1 Are hazards. '
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containing major fire hazards.
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APPENDIX A GUIDELINE l APPENDIX A LOCATION COMPARISON RDtARKS Item Pa ge i
29.
Plant layout should be arranged to 12 D.1. a. 2 NC See Section 3.1.2 l
separate redundant safety-related systems from each other.
30.
Identif Acatior. of safety-related 13 D.1. b C
See bection 3.1.2 l
systems and fire hazards.
31.
Cable spreading rooms snould not 13 D.1. c C
Cable spz'eading rooms are not stared te snared between multAple. It actor between zeator units.
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32.
The cable spreading room should 13 D.1. c C
' Cable spreading room is separated f rom be separated from other areas of.the ot.ner plant areas ty 3-tour barriers.
plant by 3-hour f Are barriers.
33.
Reaundant cabling in cable
.13 D. I. c tC Cabling associated with redundant spreading' room should be se parate d saf ety-related systems As routed in by 3-hour barraera.
E separate raceways which are separated in accordar.ce with begulatory Guade 1.75.
34 Interior wall' and structural 18 D.1. d C
See Section 3.1.2 l
com;.anents, thermal inaulation, e
scandproofing,'and radiation ahtelding materials should be noncombustible.
35.
Interior finistes should be noncom-13 D.1. d C
See Section 3.1.2 l
bustAble or. lasted by a. testing laboratory for flame spread, smoke, and fuel contribution of 25 or less.
36.
Metal deck root construction 13 D. I. e AC See Section 3.1.2 l
should be noncombustible or listed as Class I by Factory Mutual System Approval Guide.
37.
Suspended ceAlings and supports 14 D.1.f C
The suspended ceiling in the control should be noncombustible.
room is of noncombustible constrLc-tion, consisting of mineral fiber panels resting on a metal grid system which is supported by steel wires.
38.
Concealed spaces should be devoid 14 D.1. f NC See Section 3.1.2 l*
of combustables.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARKS l'
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High volta <;e - high 4";perage trans-14 D. I. g C
All indoor 'transf ormers are > air
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coole.i, try type, or cooled by non-i
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formers 1.4 Luildings cantaining safety-related systers bhodW @
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,f coaburthle fluida.
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- , Protect 1 ors of buildings cont 41r.ing 14 D.1. h CC All out4Wr oil-filled trearf.ormers c
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safety-related systems from exposure f
are located more than 50 feet frrA
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or spill fires involving oilhilled I
my safety-related structure.
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Floor drains sized for expected 15 D.1.1 C
Mequate/ floor drainage is'ptcwided I
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provided for areac with fixeA in all plant areas provided with firefightingwaterflowshoujdbe fixed water fire supression systesns.
suppression systems.
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42.
Flowdrains should ba }rovided 15 D.1.1 W
See Sectaon 3.1[2 l
where needed to premnt fire hose C
. water froom causing unacceptable e
damage to equipment.
/ v 43.
Equipment should be mounted on 15 D.1.1 C
FloCr-mounted 3r.fety-related pedestals. or curbs should be compesnts are raised above floor provided to contain and direct level eit..ar by the use of an ertended i
"'e' water to floor drains.
frame base or by mounting on a ' '
pedestal.
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Drains in areas containing com 15 D.1.1 C.
See Section 3.1.2 l
bustibl<t liquids should have provisions for preventing the f
r spread of fire throughout tie drain
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sys tem.
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45.
Water drainage from areas which 15 D.1.1
~ C
.Potentially radioactive laquid wastes
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may contain radioactivity should are collected and monitored prior be sampled and analyzed before to, discharge.
discharge to environment.
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Floors, walls, and ceillags 15 D.1.j NC see Section 3.1.2 l
j enclosing separate fire areas '
j should have a minimum fire rating of
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3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.
I 47.
Dmrs in barriers separating fire 15 D.1.j AC See Section 3.1.2 l
areas should be 3-hour rated.
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APPENDIX A GUIDELINE APPEtDIX A LOCATION COMPARISCN REMARES Pa @
Item l
1 l
48.
Doors in barriers seyrating fire 15 D.1.j NC See Section 3.1.2 l
areas should be normally closed and locked, or provided with an-nunciation in the control room.
49.
Ventilation system penetrations in 16 D.1. j C
Fire dampers or fire doors, compatible with the fire barrier, are installed barriers separating fire areas at all ventilation duct penetrations should be protected by a standard
" fire door damper" where required.
through fire barriers.
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Control of Combustibles
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50.
Saf ety-related systems should be 16 D.2.a C
To the maximum extent possible, separated f rom combustible materials significant concentrations of com-where possible and when not, special bustible ruterials are located outside structures containing safety-protection should be provided to prevent a fire f rm defeating the related components. In tiose cases for which this is not possible, such as safety system function.
the standby diesel generator fuel oil day tanks, special fire pro-tection consisting of autmatic fire suppression systems and/or construc-tion capable of withstanding a fire is provided.
51.
Bulk gas storage (compressed or 16 D.2.b NC See Section 3.1.2 l
cryogenic) should not be permitted inside structures housing saf ety-related equipment. Flammable gases should be stored outdoors or in separate detached buildings.
52.
High pressure gas storage 17 D.2.b C
High pressure gas storage cylinders containers should be located with are store.d vertically.
the long axis parallel to building walls..
53.
Use of compressed gases inside 17 D.2.b WC See Section 3.1.2 l
buildings should be controlled.
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APPENDIX A GUIDILINE AFPE!.JIX A LOCATION COMPARISON REMAliKS Paoe Item 54.
Plastic material usage should le 17 D.2.c C
See Section 3.1.2 l
minimized. Halogenated plastics
.such as PVC and neoprene should l
be used only when substitute non-combustible materials are not l
available.
55.
Storage of flammable liquida should 17 D.2.d C
Liquid fuels are stored either an comply wit 2. NFPA 30.
aboveground tanks trat have been provided with suitable fire barriers or in underground tanks.
Electrical l'aole Construction.
[,able Trays and Penetra tions 56.
only noncombustible materials 18 D.3.a C
Aluminum cable trays are used.
should be used for cable tray construction.
57.
Cable spreading rooms fire 18 D.3.b See items 138 through 151 protection guidelines.
58.
Automatic water sprinkler 18 D.3.c NC See Section 3.1.2 l
systems should be provided for l
cable trays outside the cable spreading room.
59.
Caales should be designed to 18 D.3.c C
Cable insulating systems include allow wetting down without proprietary Jacketing materials electrical faulting.
designed for wetting.
6 0..
Cable trays should bave manual 19 D.3.c AC See Section 3.1.2 l
hoses and portable extinguisners provided as backup to automatic sprinklers.
61.
Safety-related equipment in 18 D.3.c C
See Section 3.1.2 l
in vicinity of cable trays should be protected f rom sprinkler system
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operation or malfunction.
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LGS FPER NO.
APPENDIX A G*JIDEI,1NE Al PENDIX A LOCATION COMPARISON REMI.RKS Page Item 62.
Cable and cable tray penetration 18 D.3.d WC See Section 3.1.2 l
of fire barriers should be sealed to give protection equivalent to that of the fire barrier.
The design of fire barriers for cable trays should meet the require-ments of ASTM E-119.
63.
Fire breaks should be provided as 18 D.3.e C
See Section 3.1.2 l
deemed necessary by fire hazards analysis. Flame or fire re-tardant coatings may be used as a fire break for grouped electri-cal cables.
64.
Electrical cable construction 19 D.3.f AC See Section 3.1.2 l
should pas t he IEEE 383 flame test.
65.
To the extent practical, cable 19 D. 3. g C
See Section 3.1.2 l
construction that does not give off corrosive gases while burning should be used.
66.
Cable trays, raceways, 19 D. 3. h C
Electrical cable ramways are u ed conduit, trenches, or culverts only for cables.
should be used only for cables.
Miscellaneous storage should not be permitted, nor sFould piping f or flammable or combustible liquids or gases be installed in cable routing area.
Thedesignofcabletunnels[
19 D. 3.1 AC Building ventilation systems are-67.
culverts, and spreading rooms espable of being manually controlled should provide for automatic or tc ef f ect smoke removal in safety-manual smoke venting as required related areas with cable concea-to facilitate manual fire fighting.
tra tions.
68.
Cables in the control room should 19 D.3.j C
Cables entering the control room be kept to the minimum necessary are essential to the ogeration of the number. All cables entering the control room and terminate within control room should terminate there.
the control room.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES Pa ge Item 69.
Caoles should not be installed in 19 D.3.j C
See Section 3.1.2 l
trenches or culverts in the control room.
Ventilation 70.
Smoke and corrosive gases in 20 D.4.a AC See Section 3.7.2 l
specific fire areas - evaluation and control; discharge to outside.
71.
Ventilation systems exhausting 20 D.4.b AC See Section 3.1.2 l
smoke or corrosive gases should be evaluated to assure single failure or inadvertent operation does not violate controlled areas of the plant design.
72.
Power supply and controls for 20 D.4.c.
AC See Section 3.1.2 I
ventilation systems should be run outside the fire area served by the system.
73.
Fire suppression systems should 20 D.4.d AC See Section 3.1.2 l
be installed to protect charcoal filters an accordance with Pegulatory Guide 1.52.
74.
Air intakes for ventilating systems 20 D.4.e C
Air intakes serving areas which serving areas containing safety-contain safety-related systems related systems should be remote from are remote from exhaust and smoke exhaust and smoke outlets of other outlets of other fire areas.
fire areas.
75.
Design and use of stairwells 21 D.4.f AC See Section 3.1.2 l
and elevators.
76.
Smoka and heat vents; minimum 21 D.4.g -
AC See Section 3.1.2 l
rat.ios for natural convection and forced convection.
77.
Requirements for breathing 21 D.4.h WC See Section 3.1.2 l
apparatus f or fire brigade, damage control, and control room personnel.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES Page Item 78.
For tctal flooding gas extinguishing 22 D.4.1.
C Initiation of the carbon dioxide total systems, area Antake and exhaust flooding system f or the esble spreading ventilation dampers should close upon room actuates pressure switches which initiation of gas flow.
initiate isolation of the steam flooding dampers in the ventilation ducts penetra-ting the cable spreading rom walls.
Lig htin g and Communication 79.
Fixed emergency lighting should 22 D. 5. a NC See Section 3.1.2 l
consist of sealed beam units witn individual 8-hour minimum battery power supplies.
80.
Sealed team battery-powered 23 D. 5. b WC Portable lights will te provided.
portable hand lights should be provided for emergency use.
81.
Fixed emergency cmmunication 23 D. 5. c NC See Section 3.1.2 l
should use voice powered head sets at preselected stations.
82.
Fixed repeaters for portable 23 D. 5. d NA See Section 3.1.2 l
radio communication units should be protected from fire damage.
Fire Detection and Suppression Fire Detection 83.
Fire detect ion compliance with 23 E.1. a NC See Section 3.1.2 l
NFPA 72D.
84.
Fire detection system should 23 E.1.b C
Fire and smoke detection signals give audible and visual alarm are annunciated audibly and and annunciation in the control room.
visually at the fire protection panel in the control room.
85.
Iocal audible alarms should also 23 E.1. b AC Local annunciators near the cri-sourd at the location of the fire.
tacal hazards sound audible alarms.
86.
Fire alarms should be distinctive 23 E.1. c C
Audible fire alarms are unique and unique.
and distinct from other plant alatus.
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APPENDIX A GUIDELINE APPENDIX A LOCATIGN COMPARISON RD(ARKS Page Item 87.
Fire detection and actuation 23 E.1. d C
See Section 3.1.2 l
t systems should be connected to the plant emergency power supply.
Fire Protection Water Surply Systems 88.
An underground yard fire main loop 23 E.2.a C
The yard fire main ras been should be installed furnish antici-installed in compliance with NFPA pated fire water requirements; use No. 24.
of NFPA 24.
89.
Lined steel or cast iron pipe should 2s E.2.a C
The yard faze main untalizes be used to reduce turberculation.
cement-lined cast iron pipe.
90.
Means for treating and flushing of 24 E.2.a AC Water used for fire protection fire main should te provided.
service meets the requireawnts of NFPA No. 22 and does not require treatment. Flushing of thte fire main is possible by sectionalized control of the fire main loop.
- 91..
Approved visually indicating 24 E.2.a C
Post indicator valves provide sectional control valves should be sectionalized control and isolation provided for isolation of fire of porr. ions of the fire main loop.
main portions during maintenacce or repair without shutting off entire system.
92.
Fire main system piping separate 24 E.2.a C
The fire main loop is separate from from service or sanitary water service water and domestic water system piping.
system paping.
93.
A common yard fire main loop may 24 E.2.b C
A common fire main loop is provided loop may serve multi-unit nuclear and cross-connected between units.
. power plant sites, if cross-connected between units.
94.
Redundant 1005 capacity fire pumps.
25 E.2.c C
Two UL-listed fire pumps are provided, each capable of supplying 1005 of the fire water-tystem flow requirements.
95.
Fire pump connections to the yard 25 E.2.c AC See Section 3.1.2 l
fire main should te widely separated.
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APPENDIX A GUIDELINE APPENDIX A LOCATICN COMPARISON REMARKS Page Item 96.
Each pump should have its own 25 E.2.c C
Each fire pump is provided with driver with independent power individual drive, power source, supplies and control.
and controls.
97.
At least one fire pump should be 25 E.2.c C
One fire pump is diesel engar.e-driven.
i driven by non-electrical means, f
preferably diesel engine.
98.
Fire pumps and drivers should 25 E.2.c IC See Section 3.1.2 l
be located in rooms separated from the 1;maining pumps and equipment by 3-hour fire walls.
r f
99.
Fire pump alarms indicating pump 25 E.2.c C
Fire pump availability, running, running, driver availability, or and trouble alarms are annunciated failure to start should be in the control room.
provided in the control room.
103.
Fire pump installation should 25 E.2.c C
The fire pump installation conforms conform to NFPA 20 as a minimum, to the requirements of NFPA 20.
101.
Two separate reliable water supplies 25 E.2.d C
Fire protection water 14s normally should be provided.
supplied from two cooling tower basins.
102.
Pequirements for tanks used to 25 E.2.d NA Tanks are not utilized fer firo supply fire protection water.
protection water supply.
103.
The fire water supply should 26 E.2.e C
See Section 3.1.2 l
be based on the largest expected flow rate for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> (300,000 gallon minimum).
104.
Lakes or fresh water ponds 26 E.2.f NA Two cooling tower basins are of sufficient size may qualify as utilized for fire protect 2on water sole source of water for fire supply.
protection.
105.
If a common water supply is used 26 E.2.f NA 7te fire protection system and the for fire protection and ultimate ultimate heat sink do not use a heat sink, then fire water require-common water supply.
ments should be included in total storage < apacity, and f ailure of the fire protection system should not degrade the ultimate heat sink.
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APPENDIX A GUIDELINE APPEIDIX A LOCATION COMPARISON REMARES Page Item 106.
Outside manual hose stations should 27 E.2.g AC Hydrants are spaced between 250 and be able to reach any location 300 feet apart along the fire main loop.
approximately every 250 f eet on yard main).
107.
Yard main laterals to hydrants 27 E.2 9 C
Each hydrant is provided with a key-should be controlled by a visually operated gate valve with a curb tox.
indicating or key operated (curb) valve.
108.
Hose houses should be equipped as 27 E.2.g AC See Section 3.1.2 l
recommended in NFPA'24, and should be provided as needed, but at least every 1000 feet.
109.
Threads on hydrants, base 27 E. 2. g C
The hose threads are compatible with those of the local fire department.
couplings, and standpipe risers should be compatible with those used by local fire departsients.
Water Sprinkler and Hose Standpipe Systems 110.
Each automatic sprinkler and 27 E.3.a IE See Section 3.1.2 l
l i
manual hose station standpipe should have an independent con-nection to the yard main or to headers fed from each end.
111.
Each sprinkler and standpipe 28 E.3.a AC See Section 3.1.2 l
l I
system should be equipped with OSGY gate valve, or other approved shutof f valve, and water flow alarm.
112.
Safety-related equipment 28 E.3.a AC See Section 3.1.2 l
should be protected from sprinkler discharge if such discharge could result in unacceptable damage to the equipment.
113.
Fire water system valves should 28 E.3.b NC See Section 3.1.2 l
be electrically supervised with indication in the control room and other locations as appropriate.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMAR!tS Page Item 114.
Automatic sprinkler systems 28 E.3.c C
Aatomatic sprinkler and deluge l
conform to appropriate NFPA systems comply with the appil-standard as a minimum.
cable requirements of NFPA Nos.
13 and 15.
115.
Recommendations for interior 28 E.3.d NC See Section 3.1.2 l
l manual hose installations.
116.
Location of hose stations based 29 E.3.d NC See Section 3.1.2 l
on whether an area is normally occupied or normally unoccupied 1 location of shutoff valves and pressure-reducing devices outside saf ety-related areas.
117.
Hose nozzle selection should be 30 E.3.e AC See Section 3.1.2 l
based on the fire hazard analysis ;
electrically safe nozzles should Le provided in vicinity of electri-cal' hazards.
118.
Foam fire suppression.
30 E.3.f AC See section 3.1.2 l
Halon Sut>pression Systems 119.
Recommendations for Halon 31 E. 4 C
See Section 3.1.2 l
suppression systems.
Carbon Dioxide surpression systems 120.
Recoaunendations for carbon dioxide 31 E. 5 C
See Section 3.1.2 l
suppression systems.
Portable Extinguishers 121.
Fire extinguishers should be provided 32 E. 6 C
Portable extinguishers compatible with the combustible material are in accordance with NFPA 10.
provided in accordance with NFPA 10 and the requirements of OSHA.
122.
Dry chemical extinguishers should 32 E. 6 WC Dry chemical extinguishers will be be installed with due consideration provided as required.
of cleanup problems and possible adverse ef fects on equipent in area.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMAKES
,Paqe Item Guidelines for Specific Plant Areas Primary and Secondary Containment 123.
Fire protection requirements should 32 F.1. a C
Fire hazards have been identified, as be provided on the basis of specific discussed in Chapter 4, and fire identified hazards.
suppression systems have leen provided accordingly. The types and locations of suppression systma are identified in Table A-1 and Figures L-4 through B-12.
l 124 Because of inaccessability ef 33 F.1.a NC See Section 3.1.2 these areas, protection s uld be provided by automatic f xed systems.
125.
Operation of the fire protection 33 F.1.a C
The fire protection system does not systems should not compromise integ-penetrate the primary containment rity of the containment or other boundary. Also see item 9.
j safety-related systems.
I 126.
Fire detection systems should alarm 33 F.1. a C
Actuation of the early warning fire and annunciate in the control room, detection system, as well as actua-tion of any automatic fire suppression system, is annunciated on the fire protection panels in the control room.
Type and location of fire detectors used is indicated in Table A-1.
127.
A backup fire detection 33 F.1.a NC See Section 3.1.2 l
capability should be provided 1%r the primary containment.
l 128.
Manual fire fighting capability 34 F.1. b AC See Cection 3.1.2 should be permanently installed in containment.
129.
Independent self-contained 34 F.1. b WC See item 77 breathing apparatus should be provided near containment entrances.
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APPENDIK A GUIDELINE APPENDIX A LOCATION COMPARISON REMARKS Paoe Item Control Fc e 133.
The control room should be separated 35 F. 2 C
See Section 3.1.2 l
from other areas of the plant by 3-hour fire barriers.
131.
Recommendations f or manual fire 35 F. 2 C
See Section 3.1.2 l
fighting capability.
132.
Fire detection in the control 36 F.2 AC See Section 3.1.2 l
room.
133.
Breathing apparatus for control 36 F. 2 WC See item 77 room operators should be readily available.
134.
All penetration seals should be 36 F. 2 C
All penetrations in the control room airtight.
walls, floor, and ceiling will be sealed airtight.
135.
Control room ventilation 36 F. 2 AC See Section 3.1.2 l
provisions; smoke detection, automatic isolation, and venting.
136.
Cables should not be located in 36 F.2 NC See items 38 and 69 concealed floor and ceiling spaces.
137.
All cables that enter the control 36 F. 2 C
Cablem entering the control room are room shall terminate in control room essential to the operation of the control roon and terminate within the control roort.
Caole Spreadino Room 138.
Use of automatic water or foam 37 F.3.a.1 AC See Section 3.1.2 l
extinguishing systems in the cable spreading room.
139.
Manual hoses and portable extAn-38 F.3.a.2 C
danual hose stations and portable guishers should be provided as extinguishers are located outside bac kup.
both entrances to the cable spread-ing room.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARFS Page Item 140.
Each cable spreading room should 38 F.3.a.3 NC All four divisions of safety-related have divisional cable separation.
cabling are routed through the cable spreading room. The raceways through which the dif ferent divisions are routed are separated f rom each other in accor-dance with Regulatory Guide 1.75.
141.
The cable spreading room should 38 F.3.a.3 C
The cable spreading rooms of tre two reactor units are separated f rom be separated from other areas of each other and from other plant areas plant by a 3-hour rated fire wall.
by 3-hour rated fire barriers.
142.
Two remote and separate entrances 38 F.3.a.4 C
Two remote and separate entrances to.the cable sg. reading room should are provided for access to each cable spreading room.
be provided.
143.
Aisle separation between tray 38 F.3.a.5 NC The minimum aisle separation between stacks should be 3 feet wide by 8 stacxs is approximately 3 feet wide. The minimum clear headroom is high.
approximately 6-1/2 feet high.
144.
Divisiona. cable separation should 38 F.3.b.1 C
Saf ety-related cable divisions are located in cable raceways that are moet the guidelines of Regulatory separated from each other and from Guide 1.75.
nonsafety-related raceways in accordance with Regulatory Guide 1.75.
145.
Cabling should be covered with a 38 F.3.b.2 tic Althougn no cables are covered with suitable fire retardant coating.
fire retardant coating, cable in-l sulation systems used pass the l
I IEEE-383 flame test.
1 146.
Automatic gas systems are acceptable 38 F.3.b.3 AC See item 138.
for primary fire suppression if a fixed water system is used as backup 147.
An auxiliary shutdown system with 39 F.3.b.4 C
Even though the guidelines of Regulatory Guide 1.75 are met, each reactor unit cabling independent of the cable spreading room should be provided is provided with a remote shutdown if R.G.
1.75 guidelines are not met.
panel with cabling that is not routed through tbe cable spreading room.
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APPENDIX A GUIDELINE APPENDIX A I,0CATIGN COMPARISON REMARFS Pace Item 148.
For multiple reactor unit sites, 39 F. 3 C
Each reactor unit is served by a cable spreading rooms stould separato cable spreading room.
not be shared.
149.
The ventilation system to the 39 F.3 C
In the event of actuation of the cable spreading room should be CO, system in the cable spreading designed to isolate the area room, ventilation ducts penetrating upon actuation of a gas extinguishing the boundaries of the room are auto-sys tem.
matically isolated ty steam flooding da mper s.
The dampers are actuated by pressure switches cannected to the Coa distribution piping.
150.
Smoke venting of the cable spreading 39 F. 3 PC Automatic smoke venting for areas room should be controlled automati-served by gas extinguishing systems cally by the fire detection or is not recommended and as not needed suppression system.
in the cacle spreading room.
151.
Capability for remote manuai 39 F.3 AC See item 76 control of smoke venting should be provided.
Pla nt Computer Rom 152.
Fire protection recommendations 39 F. 4 NA The plant computer is not for safety-related computers.
sa f ety-rela ted.
Switchaear Rooms 153.
Switchgear rooms should be 40 F. 5
!C The switchgear rooms at El. 239 separated f rom the remainder of the feet in the control structure are plant by 3-hour rated fire barriers separated f rom each other by to the extent practicable.
3-hour rated fire walls. These rooms and the one at El. 217 feet in the control structure are separated from the remaining areas of the plant by 3-hour rated fire walls. The floors and ceilings of the rooms are capable of 3-hour fire ratings with the exception of exposed structural steel su; porting the slabs.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARKS Pa ge Item 154.
Automatic fire detection should 40 F. S C
Each emergency switchgear room is alarm locally and in the control room provided with heat and ionization smoke detectors with local and control room alarm and annunciation.
155.
Hose stations and portable fire 40 F. 5 C
C0, hose stations are provided in extinguishers should be readily tne 13.2 kV switchgear room, and available, water hose stations are provided near the entrances to the 4 kV switchgear rooms. Portable fire extinguishers will be provided for use in both areas.
156.
Fire protection provisions for 40 F. 6 C
See Section 3.1.2.
l remote safety-related panels; fire detection, combustible material control, and manual extinguishment.
Station Battery Rooms 157.
Battery rooms should be 41 F. 7 C
See Section 3.1.2 l
separated from each other and other plant areas by 3-hour rated fire barriers.
158.
Ventilation should maintain 41 F.7 C
See Section 3.1.2 li hydrogen concentration telow 2%
by volume.
159.
Hose stations and portable 41 F. 7 C
Hose stations and portable extinguishers should be provided.
extinguishers are located in the vicinity of the battery rooms
(
to provide ef fective coverage i
of these areas.
i Turbine Lubrication and control oil Storace and Uso Areas 160.
A fire wall with a minimum rating 41 F.8 C
Three-hour fire walls with Class A l
of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> should separate all fire doors separate areas containing saf ety-related areas and eq.dp-safety-related equipr.ent from the ment from turbine oil systems.
turbine oil systems.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON RDLARKS Pace Item Diesel Generator Areas 161.
Diesel generators should be 42 F.9 AC The diesel-generators are separated separated from each other and from from each other and other parts of other plant areas by fire barriers the plant by 3-hour fire walls having a minimum rating of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, with Class A fire doors.
162.
Automatic fire suppression such 42 F.9 C
Each diesel generator room is as AFFF (foam) or sprinklers provided with a pre-action sprinkler should be installed.
system actuated by heat detectors.
163.
Automatic fire detection should 42 F. 9 C
Each diesel-generator is provided be provided to alarm locally and to with fire detectors which alarm alarm and annunciat s in control room, locally and also annunciate in the control roon.
164.
Drainage for fire fighting water 42 F. 9 AC See Section 3.1.2 l
and means for local manual venting of smoke should be provided.
165.
The day tank should be located in 42 F. 9. a C
Each day tank is located in a separate 3-hour rated enclosure separate 3-hour rated enclosure capable capable of containing the entire of containing the entire tank capa-tank capacity.
city of 800 gallons.
166.
The day tank enclosure should be 42 F.9.a NC Each day tank is located in a totally ventilated to avoid accumulation of enclosed vault area.
of oil fumes.
167.
The day tank enclosure should 42 F.9.b C
See Section 3.1.2 l
be protected by automatic fire suppression.
Diesel Fuel Oil Storage Areas 163.
Recommended locations for diesel 42 F.10 C
See Section 3.1.2 l
fuel oil storage tanks.
169.
Diesel fuel oil tanks located 43 F.10 NA Diesel fuel oil tanks are buried.
in separate buildings should be provided with autmatic fire suppression.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES i
Page Item 170.
Diesel fuel oil tanks should not be 43 F.10 C
No saf ety-related equipment is located directly above or located above the buried tanks.
below saf ety-related systems or equipment regardless of fire rating separation.
Safety-Related Puses 171.
Separation of saf ety-related 44 F.11 C
See Section 3.1.2 l
pumps by fire barriers; use of automatic sprinklers.
172.
Early warning fire detection 44 F.11 C
Early warning fire detection is should be installed with alarm and provided in all areas housing annunciation locally and in the safety-related pumps.
control room.
173.
Incal hose stations and portable 44 F.11 -
NC Except for the spray pond pump extinguishers should also be structure, hose stations and provided.
portable fire extinguishers are provided for use in all areas housing safety-related pumps. In consideration of the low combustible loading in the spray pond pump structure, portable extinguishers are deemed adequate to control and extinguish a fire at any pump.
174.
Equipment pedestals or curbs 44 F.11 C
Safety-related equipnent is and drains should be provided to mounted on gedestals or suitable remove and direct water away from framework. Draina je facilities are saf ety-related equipment.
provided throughout the plant as required.
175.
Provisions should be made for 44 F.11 C
See item 76 manual control of the ventilation system for smoke removal.
New Fuel Area 176.
Portable extinguishers should be 44 F.12 C
A portable extinguisher is ava11atle located within this area.
in the area immediately adjacent to the new f uel storage vault.
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APPENDIX A GUIDELINE APPE!QIX A LOCATION COMPARISON REMARKJ Pa w Item 177.
Hose stations stould le located 44 F.12 C
A hose station is located adjacent within hose reach of this area.
to the new fuel storage vault.
178.
Automatic fire detection should 44 F.12
!C There is no fire detection provided alarm and annunciate in the control on the refueling flo:.ar level in the room and alarm locally.
reactor enclosure.
179.
Combustibles should be limited 45 F.12 WC Combustibles will be controlled by to a minimum in tie new fuel area.
administrative procedures. See note 1.
183.
Storage area drainage capability 45 F.12 C
See Sectam 3.1.2 l
181.
The storage configuration of new 45 F.12 C
See Section 3.1.2 l
fuel should be such that critically is precluded for any water density that might occur during fire f19hting.
Spent Fuel Pool Area 182.
Local hose stations and 45 F.13 C
Hose stations and portable (.x-portable extinguishers should be tinguishers are available at the provided.
spent fuel storage pool.
183.
Automatic fire detection should 45 F.13 IC See item 178 be provided to alarn and annunciate in the control room and to alarm locally.
Radwaste Enclosure 184.
The radwaste enclosure should be 45 F.14 C
Tne radwaste enclosure is separated separated f rom other areas of the f rom other parts of the plant by plant by fire barriers taving at 3-hour fire barriers with Class A least 3-hour ratings.
fire doors.
105.
Automatic sprinklert should be 45 F.14 C
See Section 3.1.2 l
used in areas where combustible materials are located.
186.
Automatic f are detection should be 45 F.14 AC See Section 3.1.2 l
provided to annunciate and alarm in the control rom and alarm locally.
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APPENDIX A GUIDELINE APPEN3IX A LOCATION CottPARISCH REMARKS Paoe Item 187.
Ventilation systems should be 45 F.14 C
The radwaste enclosure ventilation capable of being isolated during system is capable of being isolated.
a fire.
Fire dampers and doors restrict the spread ot fire.
188.
Water should drain to liquid 45 a 14 C
All drainage in the radwaste radwaste sumps.
enclosure As to liquid radwaste sumps.
Decontamination Areas 189.
The decontamination areas should be 46 F.15 C
See Section 3.1.2 l
protected by automatic sprinklers if flammable liquids are stored.
193.
Automatic fire detection should be 46 F.15 NC No automatic fire detection is provided to annunciate and alarm provided for the decontamination locally.
areas.
191.
The ventilatAon system should 46 F.15 C
The ventilation systems for the be capaole of being isolated, access control and radwaste enclosure decantamination rooms can be isolated.
192.
Hose stations and portable extin-46 F.15 C
Hase stations and portable extin-guishers should be provided, guishers are available for use in all decontamination areas.
saf ety-Delated Water Tanks 193.
Fire protection provisions for 46 F.16 NA The plant has no safety-related saf ety-related water tanks.
water tanks.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES Pa ge Item coolina Towers 194.
Cooling towers should be of non-46 F.17 C
ne cooling towers are of nonewntustable combustible construction, or construction except f or the fill material, located so that a fire will not wnich is polyvinyl chloride. No safety-affect safety-related systems.
related structures or systems are located near the cooling towers such that they could be affected by a fire in the cooling towers.
195.
Cooling towers should be of 46 F.17 AC See Section 3.1.2 l
noncoebustible construction when the basins are used for the ultimate t. eat sink or for the fire protection water supply.
Miscellaneous Areas 196.
Miscellaneous areas (e. g., record 47 F.18 C
Warehouse, machine shop, record storags areas, shops, warehouses, storage, auxiliary boiler room, auxiliary boiler rooms) should be and other miscellaneous areas are located so that a fire in such at parated f rom areas containing areas will not adversely af feet safety-related systems by 3-hour any saf ety-related systems.
rated fire barriers so that safe snutdown will not be jsopardized.
197.
Fuel oil tanks for auxiliary 47 F.18 C
No. 2 fuel oil and No. 6 fuel boilers should be buried, or oil for the auxiliary.cilers is provided with dikes to contain the stored in aboveground a utdoor entire tank contents.
tanks which are provided with dikes large enough to contain tie entire tank contents.
Welding and Cutting, Acetylene-Oxvoen Fuel Gas Systems 198.
Storage locations should be chosen 47 G.1 AC Compressed gas storage cylinders to permit fire protection by for welding are located outdoors.
sprinkler systems.
The requirements of NFPA No. $1 and 51B will be followed.
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APPENDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES Page Item 199.
Incal hose stations and portable 47 G.1 C
A local hose station and portable extinguishers should be provided.
extinguishers are available.
200.
The requirements of NFPA 51 and 47 G.1 WC See item 198 stb are applicable to these hazards.
201.
A permit system should be required 47 G.1 WC See note 1 for utilization of this equipment.
Storage Areas for Dry Ion Exchance 202.
Dry ion exchange resins should not 47 G.2 WC Storage areas will le remote from be near essentral safety-related essential safety-related systems.
systems.
203.
Dry unused resins should be 47 G. 2 NC Local hose stations and portable protected by automatic wet pipe fire extinguishers are provided in sprinkler systems.
the vicinity of storage areas for dry resins.
204.
Fire detection by smoke and heat 47 G. 2 NC No fire detection is provided for detectors should alarm and annunciate dry resin storage areas.
in the control room and alarm locally.
205.
Local hose stations and portable 47 G.2 C
See item 203 extinguishers should be provided.
206.
Storage areas of dry resins 47 G.2 NC No curbs are provided.
should have curbs and drains.
Hazardous Chemicals 207.
Recommendations for storage of 48 G.3 WC See Section 3.1.2 l
hazardous chemicals.
208.
Materials that collect and contain 48 G.4 WC See note 1 radioactivity (e.g., spent ion exchange resins, charcoal filters, HEPA filters) should be stored in closed metal tanks or containers located in areas free from ignition sources or combustibles.
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APPINDIX A GUIDELINE APPENDIX A LOCATION COMPARISON REMARES Pa ge Item 209.
These materials should be protected 48 G. 4 WC See note 1 f rom exposure to fires in adjacent areas.
210.
Consideration should be given 48 G. 4 C
Provisions for accomodating decay to requirements for removal of heat are considered when selecting isotopic decay teat from entrained container s.
radioactave materials.
(a* Administrative controls and procedures concerning fire protectron will be developed during preparation of plant procedures.
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3.1.2 EXPLANATORY NOTES FOR APPENDIX A COMPARISON l
Item 7 Appendix A Guideline A single failure in the fire suppression system should not 4
impair both the primary and backup fire suppression capability.
For example, redundant fire water pumps with independent power supplies and controls should be provided.
LGS Design 4
As described in Section 2.1.2, fire water is supplied by two redundant pumps,.each of which is capable of providing the design fire protection system flowrate at the design pressure.
Power for the motor-driven fire pump is provided from either of two independent offsite power sources.
The controls for the diesel engine-driven fire pump are de-operated and are powered from batteries which supply only the engine-driven fire pump.
Therefore, no single failure of the power supplies can affect both fire pumps.
By the use of sectional isolation valves, damaged portions of the yard fire main loop can be isolated without affecting the major portion o'f the loop.
The provision of hose reels and portable extinguishers for manual fire fighting precludes the 4
possibility of a single failure in an automatic fire suppression system from disabling all means of fire suppression for a given area.
Item 9
~
Appendix A Guideline Failure or inadvertent operation of the fire suppression system should not incapacitate safety-related systems or components.
i LGS Desian Although it can be postulated that failure or inadvertent operation of the fire suppression system may' incapacitate 1
j safety-related systems or components, such failure or inadvertent operation will not prevent safe shutdown from il being achieved through the use of redundant safety-related l-systems.
i
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LGS FPER Item 13 Appendix A Guideline On multiple-reactor sites where there are operating reactors and construction of remaining units is being completed, the fire protection program should provide continuing evaluation and include additional fire barriers, fire protection capability, and administrative controls necessary to protect the operating units from construction fire hazards.
The superintendent of the operating plant should have the lead responsibility for site fire protection.
LGS Desion Administrative procedures will be prepared to protect the operating Unit 1 from fire hazards associated with construction of Unit 2.
Special precautions will be taken to prevent and control fire hazards.
Use of open flames and welding or cutting equipment will be properly supervised.
Construction of both the underground yard fire main and the fire water distribution piping inside both units of the plant will be completed prior to Unit 1 operation so that manual hose station coverage will be available in Unit 2 as well as Unit 1.
Portable fire extinguishers will also be available ll in the Unit 2 portions of the plant during its construction.
The construction site will be kept clean and orderly and contractors' sheds will be kept outside the confines of new construction.
Item 14 Appendix A Guideline Simultaneous fires in more than one reactor need not be postulated, where separation requirements are met.
A fire involving more than one reactor unit need not be postulated except for facilities shared between units.
LGS Desion The fire protection program is based on the occurrence of a fire in only one reactor unit or one common area at a time.
The unitized portions of the turbine enclosures and reactor enclosures are separated from each other and from common areas by 3-hour rated fire walls.
The operating floor of the turbine enclosures and the refueling floor of the reactor enclosures are common areas which serve both units.
The control structure and the radwaste enclosure are common areas which are separated from the adjacent reactor enclosures and turbine enclosures by 3-hour rated fire walls.
The Unit 1 3-30 REV.
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LGS FPER
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At least two extra air bottles should be located onsite for each self-contained breathing unit.
In addition, an onsite 6-hour supply of reserve air should be provided and arranged to permit quick and complete replenishment of exhausted supply air bottles as they are returned.
If compressors are used as a source of breathing air, only units approved for breathing air should be used.
Special care must be taken to locate the compressor in areas free of dust and contaminants.
LGS Design Self-contained breathing apparatus will be available for use by control room personnel and fire brigade members.
The breathing apparatus will have a minimum operating life of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for control room personnel and I hour for fire brigade members.
An onsite reserve air supply of six hours for at least five persons will be provided in stored air bottles.
Compressors, if used, will be units approved for breathing air.
Item 79 Appendix A Guideline O
Fixed emergency lighting should consist of sealed beam units with individual 8-hour minimum battery power supplies.
LGS Design The emergency lighting system consists of an ac subsystem and an ac/dc subsystem.
The emergency ac lighting is powered from Class IE buses which automatically transfer to the standby diesel-generators upon loss of the normal power source.
Emergency ac lighting is provided throughout the plant to maintain minimum lighting levels necessary for access to and operation of all safe shutdown equipment for a period greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The emergency ac/dc lighting is normally powered from the Class IE buses.
In the event of loss of the Class IE ac source, an automatic transfer switch immediately transfers this lighting to the 125 V dc non-Class IE station battery source.
This power source is sufficient to sustain the ac/dc lighting load for approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> if offsite power is lost indefinitely.
All emergency ac/dc lighting fixtures are of the incandescent type.
Emergency ac/dc lighting is provided for the following areas:
a.
Control room O
b.
Auxiliary equipment room c.
Cable spreading room 3-47 REV.
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LGS FPER d.
Static inverter room e.
4kV switchgear compartment f.
13kV switchgear compartment 9
Drywell h.
HPCI, RCIC, and RHR pump compartments (at exit doors only) 1.
Diesel-generator compartments l
j.
Stairways and access corridors.
The cables for both emergency lighting subsystems are routed exclusively in conduit, most of which is embedded in concrete.
In lieu of lighting associated with the emergency ac/dc subsystem, lighting fixtures with individual battery packs are provided in the spray pond pump structure.
The battery packs are rated for 3.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br />.
Item 81 Anpendix A Guideline Fixed emergency connunication should use voice powered head sets at preselected stations.
LGS Design Requirements for the reporting of fires and the direction of fire fighting efforts are considered in the design of the plant communication system.
Fixed emergency communication equipment is located at every floor level of the plant at preselected stations but does not include voice powered head sets.
Item 82 Appendix A Guideline Fixed repeaters installed to permit use of portable radio communication units should be protected from exposure fire.
damage.
LGS Design Portable radio comniunication units will not be provided at the site.
The use of portable radios has been known to energize or de-l energize electrical equipment and components..This effect l
has been considered in light of the requirement that fire protection equipment should not adversely affect shutdown l
equipment.
O 3-48 REV.
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design of cooling towers with PVC and polyester fill material and without fire protection sprinklers.
Item 207 Appendix A Guideline Hazardous chemicals should be stored and protected in
' ~
accordance with the recommendatons of NFPA 49, " Hazardous Chemicals Data." Chemicals storage areas should be
~.,
well-ventilated and protected against flooding conditions since some chemicals may react with water to produce ignition.
LGS Design Hazardous chemicals are stored'in areas that are remote from~
safety-related areas, are well ventilated, and are protected:--
against flooding.
The controls and precautions relative to hazardous chemicals to be commonly used in the plant will be, set forth in the administrativo procedures.
()
Hazardous chemicals will be transported in the usual shipping containers, stored in suitable areas.
Protection, separation, and isolation criteria will be followed in accordance with the recommendations of NFPA 49, " Hazardous Chemical Data."
S
~
The ventilation system provided for the chemi' cal' storage areas will assure that the toxicity level and potentially explosive gaseous mixtures in these areds meet the requirements of NFPA 49.
Adequate drainage will be provided.
e
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LGS FPER s
O' APPENDIX R OF 10 CFR PART 50~
i 3.2 3
The purpose'of this section is to compare the' fire protection provisions of Limerick Gederating Station (LCS). Units 1 and 2 with the guidelines in Appendix R of 10 CFR.Part 50.
T To identify areas of pot'entidl jmpact and to facilitate comparison, a matrix addressing each: guideline of Appendix R and relating to the plant systems,\\equipmentr and' components is included as Section 3.2.1.
Trie matrix has extracted all suggested guidelines from Appendix R and given each an item number, 1 through 45.
Each item has condensed a particular
, guideline and makes referen'ce to the sectionsin Appendix R where that guideline can be found.
The general' degree of conformance to the guideline is indicated in the " comparison" column, using codes defined as followsc ~
' ~
-4 C
indicates conformance to.the guideline or conformance to itssintent.' : Substantiating statements may be included as part of the matrix or in Section -3. 2. 2.
AC indicates cenformance.to the guidelines by alternate means or: methods.
The manner of Os conformance is. included in the matrix or discussed in Section 3.2.'2.
indicates that design, changes, means, or methods WC are planned in order to conform, or conform to the intent of the guideline.. The planned design changes, means, or methods and the manner of conformance are discgssed in Section 3.2.2.
indicates that the'pla'nt is not in conformance and NC no design,; changes are' planned.
The basis for non-conformance to thetguideline'is included in the matrix or discussed.iri,Section-3.2. 2.
indicatesithat the guidelin6 1's not applicable to NA Limerick ldenerating Station' Units 1 and 2.
Substantiating statements aie included as part of the matrix in Section 3.2.1.
In the " remarks" column,sadditional information is provided to explain or expand on the,d'egree of conformance.
Alternatively, reference may be made tel,Section 3'.2.2 for a.more detailed discussion.
The item numbers in,Section 3.2.2 correspond to those in Section 3.2.1.
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LGS FPER SECTIGN 3.2.1
[
i DETAILED COMPA4ISON TO APPENDIX R 0F 10 CFR PAET 50 APPENDIX R E>u,
APPENDIX R GUIDELINE ITEM NO.
[gjPADISGN EE:NE S hnsI. 54pcljss for Fire Surpression Systems 1.
T.o separate water supplies shall be provided to A
C furnish.ecessary water volume and prmssure to the tire main loop.
2.
Each supply shall consist of a storage tans, pump, A
AC In lieu of storage tanxs, t.he cooling piping, and appropriate isolation and control tok.er Lasins of the Unit 1 and th:it J I
valves.
cir=ulating water systems are used l
as the two sources of water for the fire main loop.
t 3.
These supplies shall be separated so that a f ailure A
C See Section 3.2.2 e
of one supply will not resalt in a failure of the other supply.
l 4.
Each ' supply of the fire water distribution system A
C Tne storage capacity of each cooling shall be c.pable of providing the maximum expected tower is 7,000,000 gallons, which is j
water demanos f or a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
well in excess of the 370,000-gallon r
v olume. required for two-hour operation of tne largest sprarAler system concurrent with hose stream operation at 1000 gpu.
5.
Requirement s for ensuris.g minimum water volume when A
NA See Section 3.2.2 storage tanks are used for combined service-water /
fire-water uses.
6.
Requirement s Aor other water systems used as A
AC See Section 3.2.2 sources of fire protection water.
i jggtional Isolation Valves 7.
Sectional isolation valves such as post indicator B
C valves or. x.y operated valves shall be installed in the fire main loop to permit isolation of portions of the main fire main loop for maintenance or repair without interrupting the entire water supply.
3-73 REV 1, 2/82 i
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LOS fPEh A?/ EM DI X E NO.
APPENDIX r G UI D E LI!;!
_HJJ N0.
[CAPAME.3 FEsm Hyd r a rit Is31ation valves d.
Valves st.all Le instelled to [ermit 1 solation of C
C oat side hyazants from the fire main for malr.tenance or repair witnout ir.ter r a pt iny the water satply to automatic or manual fire suppression systems.
hanml Fin Smaression s.
Standpipe end Lose systems sr.411 te installed so D
NC See Section 3.2.2 that at least one ef f ective hose stream. All ce aole to reach any location tnat ccr,tains or pre ser.t s an ex5.osure fire L4zard to structures, systems, or components importar't to safety.
10.
Access to perailt efIective tancticning of the L
C fire trigade shall le provide d to all areas that contain or present an exposure fire hazard to structures, systems, or comironents im ortant r
to sa fe ty.
11.
Standpipe and Lose stations shall 1.e inside PWR D
IA The primary cor.tainssa.t is ir.orted co..tainment s and EKh cor.tainments that ar e not with nitrogen during reactor i rre rt ed.
operation.
12.
For TWa crywells, standpipe and hose stations D
K T. e nos i t. s:Is locatea rx rest shall be placea outside the drywell with t r-e drywell entrar.ces are equiaec alegaate les.gths cf hose to reach any wit h a twG-Ioot lengin ot zire kurs.
location Ar.siae ti.e drywell with an ef fective To s urplemes.t t r.is rose len g+ t.,
a hose stream, i.ose cart e s ll yd with eroagt. Lors a
to r each any location. witLin ti e drywell will to locat ed n(ar e ac:.
drywell es. trance.
AzcI2213 tic Luce Te st s 13.
Fi r +: bose s r.all Le hydrosta tically te sted at 4
E WL
- re ssare o; 150 psi or So i.si anove maximum fire
- s. air. operat is.g pr essure, snichever is great er.
nose stort -1 in outside Lose houses stall ts tested o r.n ua ll y.
Ir.terior stanapipe hose shall te tested ever y t..ree years.
Aat o:r.at Ic _f are De te et ion 14.
Automatic Iire detection systems snail 14 F
C installed in all areas of the plant that contain or present an exposure fire hazard to saf e slutdow saf ety-rela te d systes..s or co.nponents.
I 3-74 hEV 1, se2 O
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LGS 1PER AIPENDIl In 14.
CG4F4b fM MMS These fire detection systems shall be capable of operating with or without offrite power.
hie Protection of Sa fe Stygo.n CacapgAg 15.
Fire damagw shall be ' limited so that one train G. I.a WC of systems necessary to achieve and maintain hot shutdown conditions from either the control room or emergency control station is free of zire damage.
16.
Fire damage shall Le limited so that systems G. I. D WC necessary to acnieve and maintain cold shutdow.4 from either the control room or emergency control station can Le repaired within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
17.
Consideration of associated non-sa f ety circuits G.2 C
As described for ites. 3t, properly as requiring protection to ensure Ireedom f rom (part of cooruinated Class IE protective fire damage.
first devices are provided to prever.t para-fire-caused circuit taults graph) f rom propagating from the f aulted cir c uit to other circuits in tne power castribution system. There-f ore, tim capability to achieve and maintain hot stutdown conaltions is ensured without providing special protection from fire zor circ uits not directly related to tne safe sintdows. systems and compor* nts.
18.
Alternative means of ensuring that one train of G.2.a AC See Section 3.2.2 systems necessary to acnieve and maintain het G.2.b shutdown is fr(e of fire damage (where c4cles or G.2.c equipment of redur. dant trains are located in tne sa:ne fire area).
19.
Alternative means of g.roviding fire protection G. 2. d NA Ts.e primary containment is m.e r t e d ir. side non-inerted containments.
G.2.e with nitrogen durir.g zwartor G.2.f operation.
20.
Provision ot alternative or dedicated shutdown G. 3 i
See Section 3.1.2 capabilit y in certain fire areas.
3-75 R EV 1, de2
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LGS FPES APPENDIX R DO.
APPENDIX a GUIDELINE
_III3_UO _
CO:4PA RI SON SEFAEPT 2
file Br11ade 21.
Requirements for the onsite fire trigade.
H WC fiXL1;Made Traininq 22.
nequirements for training of fire brigade members.
I WC Eme roency Llahtinq 23.
Energency lighting units with at least an 3-hour J
AC S ee Section 3.2.2 tattery power supply shall te provided on all areas netded for operation of saf e shutdown equipment and in access and egr(ss routes thereto.
A Ln ing t r at ive Co r.t rols 24 Estoolishment of administrative controls to K
WC minimiz e tire hazards.
Alt er nat ive ar.d Dedicate d Shut down Capability 25.
The shutoown capatility provided for a specific L.1 C
fire area shall be able to achieve and maintain sabcritical reactivity conditions in the reactor, maintain reactor coolant inventory, achieve and maintain hot shutdown conditions, achieve cold shutdown canditions within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and raintain colo shutdown conditions thereafter.
26.
During the postfire shutdown, the reactor ccolant L.1 C
system process variables shall be maintained with-in those predicted for a loss of normal ac power, and the fission product boundary integrity shall not be affected.
27.
Performance goals for the shutdown functions.
L. 2 C
The systems and components relied on for hot shutdown and cold shutdown in t he event of a fire lave been selected so as to ensure that the listed goals are achieved.
28.
The alternative shutdown capability shall De L. 3 NA As discussed in item 20, the addition independent of the specific fire areas.
of alternative or dedicated shutdown capability is not needed to ensure tlat hot shutdown can be achieved.
29.
The shutdown capability shall accommodate postfire L. 3 C
All systens and components relied on conditions where offsite power is available and f or hot shutdown and cold shutdown 3-76 R EV 1, 2/82 O
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LGS FPEE A?PENDIX k
_i:A APPENDIX F GUIDELINF
__I?tM NC.
CQ4 PARI SCN if 4AH S wb re, offsite tower is got availatle for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
in the event of a fire are ca,atle of owing powred trm. the onsite power supplies, i.e.,
t he s tat ion catteries and star 4by diesel-generators.
30.
If the capatility to actieve and maintain cold L.4 C
shutdo.n will not te ava11atle because of fire daciage, the e.Nipmwnt and systems comprising the means to acnieve and maintain the hot shutdown condition shalA be capable of maintaining such conditions until cold shutdown can Le acnieved.
31.
If the equipmer.t and syrtens comprising the means L. 4 ta See Section 3.2.2 to achiev= and s.aintain hot shutdown conditions will not oe capable of Leinj powered by both onsite anu olisate electric power systems accause of fire ud.uage, an indepenaent onsite power system snall be provided.
32.
Equipment and systeme comprising the means to L.5 WC achieve and maintain cold shutdown conditions shall not te damaged by fire; or the fire damage to such equipment and systems shall be limited so that the systems can be made operaule and cold shutdown can Le achieved within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
33.
Materials zor such repairs shall be readily L. 5 WC The materials required and repair available an site and procedures shall be in procedures that will be necessairy ef f ect to implement such repairs.
in order to achievu cold shutdown remain to be identified.
34.
If the equipment and systems comprising the L. 5 NA See section 3.2.2 means to achieve and maintain cold shutdown
,anditions (and which are used prior to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after the fire) will not be capable of being powered by both of f site and onsite power systems because of fire damage, an independent onsite power system shall te provided.
35.
Shutdown systems installed to ensure postfire L. 6 C
shutdown capability need not te designed to i
meet seismic Category I criteria, single failure criteria, or other design basis accident criteria, except where required for other reasons.
36.
Isolation of safe shutdown equipment and systems L. 7 C
See r ction 3.2.2 from associated non-safety circuits.
3-77 R EV 1, 2/82
.v-.
LGS FPEE APP EN DI X E Du.
APPENDIX B GUICELIh!
_IIEM NO.
CCMP A B I SCN FEMAFKS Fire barrier Cable Penetrati2n Seal cuali fication 37.
Penetration seal designs shall utilize only M
C noncombustible materials.
38.
Penetration seal designs shall be qualified by M
C See Section 3.2.2 tests snat are comparable to tests used to rate fire barriers.
39.
Acceptance criteria for tests of penetration M.1 C
T he listed criteria are included in seal designs.
M. 2 documents discussed under item 38.
M. 3 fire 292IS f
40.
Fire doors shall be selz-closing or provided with N
AC S ee Section 3.2.2 closing mechanisms.
41.
Fire doors shall be inspected semi-annually to N
AC Fire doors that are not electrically verify that aatomatic hold-open, release, and supervised will be inspected semi-closing mechanisms and latches are operable.
annually.
For doors that are electrically supervised, this super-vision provides continual verifi-cation that the doors are in tne closed position.
i 42.
Altersative means for ensuring that fire doors N.1 C
See Sec tion 3.2.2 l
protect the door opening as required in case of N.2 fire.
N. 3 N.4 43.
The fire brigade leader shall have ready access N
WC to keys for any locked fire doors.
44 Areas prote cted by automatic total floodiny gas N
C T he cable spreadir.9 rooms are the superession systems shall have electrically only compartments proviced with supervised self-closing fire doors or shall automatic total floocing 94s satisf y option 1 above.
s upp res sion s ys te rs. Ali fire doors in tLu calle spreadir.g room boundary walls have self-closers and are electrically s upe rvised.
0211 Collect ion Svetem for Feactor Coolant e u:m 45.
The reactor coolant pump shall be equipped with O
NA The primary contais.nent as inerted an all collection system if the containment is with nitrogen during normal reactor not inerted during normal operation.
oper ation.
3-78 KEV 1, 2/82 O
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-s 3.2.2 EXPLANATORY NOTES FOR APPENDIX R COMPARISON Item 3 Appendix R Guideline These supplies shall be separated so that a failure of one supply will not result in a failure of the other supply.
LGS Design The Unit 1 and Unit 2 circulating water systems are completely separate, so that any failures occurring in one system will not affect the other system.
The two fire pumps are located in separate compartments within the circulating water pump structure.
The connections of the fire pump discharge lines to the Zire main loop are located underground to minimize the potential for damage to the piping.
Item 5 Appendix R Guideline When storage tanks are used for combined service-water / fire-
]
water uses, the minimum volume for fire uses shall be ensured j
by means of dedicated tanks or by some physical means such as a vertical standpipe for other water service.
Administrative controls, including locks for tank outlet valves, are unacceptable as the only means to ensure minimum water
. volume.
LGS Desion Storage tanks are not used as the sources of fire protection water.
As noted in items 2 and 4 of Section 3.2.1, fire protection water is obtained from the cooling tower basins of the Unit 1 and Unit 2 circulating' water systems, each of which has a storage capacity of 7,000,000 gallons.
Although the cooling tower basins also serve as the water sources for the service water systems, the storage capacity of the cooling tower basins is sufficient to ensure an adequate l
water supply for both systems (service water and fire l
protection water) without dedicating a certain volume of l
water to either system.
One of the two cooling tower basins will become unavailable as a source of fire protection water if the basin is drained to allow maintenance of it, or if the stop logs are inserted in the 96-inch circulating water lines from the cooling tower to allow work on some portion of the circulating water
()
system.
In this situation, the fire pump suction valves from
\\m/
the affected circulating water line will be closed in order 3-79 REV.
1, 2/82
LGS FPER to avoid jeopardizing the operability of the fire pumps.
The unaffected circulating water lines and cooling tower will remain available to provide fire protection water to both the fire pumps.
I Item 6 Appendix R Guideline Other water systems used as one of the two fire water supplies shall be permanently connected to the fire main system and shall be capable of automatic alignment to the fire main system.
Pumps, controls, and power supplies in these systems shall satisfy the requirements for the main fire pumps.
The use of other water systems for fire protection shall not be incompatible with their functions required for safe plant shutdown.
Failure of the other systen, shall not degrade the fire main system.
LGS Desian The suction piping of the fire pumps !s permanently connected to the 96-inch circulating water lines that supply water from the cooling towers to the main condensers.
Since there are no pumps or valves located in the circulating water lines between the cooling tower basins and the connection points of the fire pump suction lines, no re-alignments are necessary to make the circulating water system available to provide water to the fire pumps.
Therefore, there are no active failures of the circulating water system that could degrade the fire main system, and no special requirements are needed for the circulating water pumps or their associated power supplies and controls.
Item 9 Appendix R Guideline Standpipe and hose systems shall be installed so that at least one effective hose stream will be able to ceach any location that contains or presents an exposure fire hazard to structures, systems, or components important to safety.
LGS Desian Hose reels are located throughout the plant in areas that either contain systems and components important to safety or present an exposure fire hazard to such areas, with the exception of the spray pond pump structure.
Fire suppression capability for the spray pond pump structure is provided by portable fire extinguishers.
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As shown in Table A-1, the combustible loading in the various compartments of the spray pond pump structure is low enough that portable fire extinguishers are sufficient to extinguish any postulated fire.
Those compartments that contain combustible materials are provided with fire detectors that annunciate in the control room.
In addition, the spray pond pump structure is divided into two separate fire areas by a 3-hour rated fire wall along the centerline of the structure.
Components needed for shutdown method A are located on the west side of this wall and components needed for shutdown method B are located on the east side of the wall, so that a postulated fire in either fire area will leave at least one method available to safely shut the plant down.
Item 18 Appendix R Guideline 2.
Except as provided for paragraph G.3 of this section, where cables or equipment, including associated non-safety circuits that could prevent operation or cause maloperation due to hot shorts, open circuits, or shorts to ground, of redundant trains of systems necessary to achieve and maintain hot shutdown conditions are located 7-g within the same fire area outside ci primary
( )
containment, one of the following means of ensuring that one of the redundant trains is free of fire damage shall be provided:
a.
Separation of cables and equipment and associated non-safety circuits of redundant trains by a fire barrier having a 3-hour rating.
Structural steel forming a part of or supporting such fire barriers shall be protected to provided fire resistance equivalent to that required of the barrier; b.
Separation of cables and equipment and associated non-safety circuits of redundant trains by a horizontal distance of more than 20 feet with ru) intervening combustible or fire hazards.
In eddition, fire detectors and an automatic fire suppression system shall be installed in the fire area; or c.
Enclosure of cable and equipment and associated non-safety circuits of one redundant train in a fire barrier having a 1-hour rating.
In addition, fire detectors and an automatic fire suppression system shall be installed in the fire area.
OV 3-81 REV.
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LGS FPER LGS Desion For fire areas in which redundant trains of systems needed to achieve and maintain hot shudown conditions are located, protection against fire-caused damage will be provided either by separating cables and equipment of redundant trains by a horizontal distance of more than 20 feet with no intervening combustibles, or by enclosing the cable and equipment of one redundant train in a fire barrier having a 1-hour rating.
Fire detectors with control room annunciation are provided in all such fire areas.
For the case of postulated fires in the control room or cable spreading rooms, the capability to achieve safe shutdown is asrared by use of the remote shutdown panels.
Cables for the circuits involved in providing the remote shutdown capability are not routed through the control room or cable spreading rooms.
Transfer switches are provided on the remote shutdown panels so that fire-damaged ci;cuits in the control room or cable spreading rooms can be isolated from the circuits involved in providing the remote shutdown capability.
Certain fire areas containing cables and/or equipment of redundant trains of systems needed to maintain hot shutdown conditions are not provided with automatic fire suppression systems.
The low combustible loading in these areas, in combination with the separation between redundant divisions of safe shutdown equipment and the 1-hour rated fire barriers enclosing certain electrical raceways, provides assurance that safe shutdown capability will be retained in the event of a fire in any of these areas.
The fire areas involved include the following:
a.
13-kV switchgear area (fire area 2) b.
Corridor at elev. 239 feet (fire area 7)
Static inverter compartments (fire areas 20 and 21) c.
d.
Auxiliary equipment room (fire area 26; the raised flooring in this area is provided with an automatic Halon 1301 suppression system) e.
Corridor at elev. 177 feet (fire area 40) f.
Safeguard system isolation valve area (fire area 43) l g.
Safeguard system access area (fire area 44) l h.
CRD hydraulic equipment area and neutron monitoring system area (fire area 45) 1.
RWCU compartments, FPCC compartment, and general equipment area (fire area 47) j.
RWCU holding pump compartments, RERS fan area, and corridors (fire area 48) k.
Service water pipe. tunnel (fire area 75) l 9
3-82 REV.
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i LGS FPER s)
All other fire areas containing cables and/or equipment of redundant trains of systems needed to maintain hot shutdown conditions will be provided with automatic fire suppression l
systems.
l Item 20 Appendix R Guideline i
3.
Alternative or dedicated shutdown capability and its associated circuits, independent of cables, systems or components in the area, room or zone under consideration, shall be provided:
a.
Where the protection of systems whose function is required for hot shutdown does not satisfy the requirement of paragraph G.2 of this section; or b.
Where redundant trains of systems required for hot shutdown located in the same fire area may be subject to damage from fire suppression activities or from the rupture or inadvertent operation of fire suppression systems.
LGS Desion Systems whose function is required for hot shutdown are provided with protection against fire-caused damage in order to ensure that at least one of the redundant trains of these systems remains available in the event of a postulated fire and/or operation of a fire suppression system in any fire area.
Therefore, the addition of alternative or dedicated shutdown capability is not needed to ensure that hot shutdown can be achieved.
The means for providing this protection against fire-caused damage are discussed under item 18 of this section.
To the greatest extent practicable, components required for hot shutdown are designed so that rupture or inadvertent operation of fire suppression systems will not adversely affect the operability of these components.
Where necessary, appropriate protection is provided to prevent impingement of water spray on components required for hot shutdown.
Redundant trains of components that are susceptible to damage from water spray are physically separated so that manual fire suppression activities will not adversely affect the operability of components not involved in the postulated fire.
OO 3-83 REV.
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Item 23 Appendix R Guideline Emergency lighting units with at least an 8-hour battery power supply shall be provided in all areas needed for operation of safe shutdown equipment and in access and egress routes thereto.
LGS Desigr.
The emergency lighting system consists of an ac subsystem and an ac/dc subsystem.
The emergency ac lighting is powered from Class IE buses which automatically transfer to the standby diesel-generators upon loss of the normal power source.
Emergency ac lighting is provided throughout the plant to maintain minimum lighting levels necessary for access to and operation of all safe shutdown equipment for a period greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The emergency ac/dc lighting is normally powered from the Class IE buses.
In the event of loss of the Class IE ac source, an automatic transfer switch immediately transfers this lighting to the 125 V de non-Class IE station battery source.
This power source is sufficient to sustain the ac/dc lighting load for approximately I hour if offsite power is lost indefinitely.
All emergency ac/dc lighting fixtures are of the incandescent type.
Emergency ac/dc lighting is provided for the following areas:
a.
Control room b.
Auxiliary equipment room c.
Cable spreading room d.
Static inverter room e.
4-kV switchgear compartment f.
13-kV switchgear compartment g.
Drywell h.
HPCI, RCIC and RHR pump compartments (at exit doors only) 1.
Diesel-generator compartments j.
Stairways and access corridors.
The cables for both emergency lighting subsystems are routed exclusively in conduit, most of which is embedded in concrete.
In lieu of lighting associated with the emergency ac/dc subsystem, lighting fixtures with individual battery packs are provided in the spray pond pump structure.
The battery packs are rated for 3.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br />.
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(_j Item 31 Appendix R Guideline If the equipment and systems comprising the means to achieve and maintain hot shutdown conditions will not be capable of being powered by both onsite and offsite electric power systems because of fire damage, an independent onsite power system shall be provided.
LGS Design There is no postulated fire in any given fire area that could cause the simultaneous loss of both the offsite and onsite power supplies.
Therefore, an additional redundant onsite power supply is not needed to ensure that safe shutdown can be achieved.
Item 34 Appendix R Guideline If the equipment and systems comprising the means to achieve and maintain cold shutdown conditions (and which are used prior to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after the fire) will not be capable of
/ 3 being powered by both onsite and offsite power systems
\\- I because of fire damage, an independent onsite power system shall be provided.
LGS Design There is no postulated fire in any given fire area that could cause the simultaneous loss of both the offsite and onsite power supplies.
Therefore, an additional redundant onsite power supply is not needed to ensure that safe shutdown can be achieved.
Item 36 Appendix R Guideline The safe shutdown equipment and systems for each fire area shall be known to be isolated from associated non-safety circuits in the fire area so that hot shorts, open circuits, or shorts to ground in the associated circuits will not prevent operation of the safe shutdown equipment.
The separation and barriers between trays and conduits containing associated circuits of one safe shutdown division and trays and conduits containing associated circuits or safe shutdown cables from the redundant division, or the isolation of these associated circuits from the safe shutdown equipment, shall
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LGS FPER be such that a postulated fire involving associated circuits will not prevent safe shutdown.
LGS Desion All systems and components that are relied on for achieving safe shutdown are powered from the Class IE ac or de power supply systems.
All non-Class IE circuits that are energized from the Class IE power supply systems are provided with properly coordinated Class IE protective devices.
In the event of any abnormal conditions such as hot shorts or shorts tc ground due to fire-caused damage to these circuits, the protective devices will prevent the fault from propagating to other circuits in the power distribution system.
Cabling for non-Class IE circuits is routed only in raceways designated for non-Class IE use, just as cabling for Class IE circuits is routed only in raceways designated for Class IE use.
Class IE and non-Class IE raceways are separated from each other in accordance with Regulatory Guide 1.75 and IEEE Std 384-1975 in order to maintain the independence of the circuits.
Item 38 Appendix R Guideline Penetration seal designs shall be qualified by tests that are comparable to tests used to rate fire barriers.
LGS Design The designs of penetration seals in fire-rated barriers are tested to verify that the penetration seals are adequate to provide a specific degree of protection against the propagation of fire through the barriers.
These tests are performed in accordance with the guidelines provided in the following documents:
l a.
Institute of Electrical and Electronics Engineers, IEEE Std 634-1978, "IEEE Standard Cable Penetration Fire Stop Qualification Test" b.
USNRC, Draft Regulatory Guide, " Qualification Test for Cable Penetration Fire Stops for Use in Nuclear Power Plants" (July 1979) l c.
NEL-PIA /MAERP, " Standard Method of Fire Tests of Cable and Pipe Penetration Fire Stops" (February 1976) d.
American Nuclear Insurers, "ANI Position on Fire Stop Test Standards" (September 1979) 3-86 REV.
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()
Item 40 Appendix R Guideline Fire doors shall be self-closing or provided with closing mechanisms.
LGS Desion With the exception of watertight doors, all fire doors are provided with one of the following two features:
a.
A self-closer to ensure that a normally-closed door returns to the closed position after someone passes through it.
b.
An automatic closing mechanism to ensure that a normally-open door will close if there is a fire in the vicinity of the door.
Watertight doors that also serve as fire doors cannot be provided with self-closers or automatic closing mechanisms, due to the inherent restrictions of their design and function.
These watertight doors are electrically supervised so that plant operations personnel are immediately notified l ()
if any of the doors are opened.
Item 42 Appendix R Guideline One of the following measures shall be provided to ensure they will protect the opening as required in case of fire:
1.
Fire doors shall be kept closed and electrically supervised at a continuously manned location; 2.
Fire doors shall be locked and inspected weekly to verify that the doors are in the closed position; 3.
Fire doors shall be provided with automatic hold-open and release mechanisms and inspected daily to verify that doorways are free of obstructions; or 4.
Fire doors shall be kept closed and inspected daily to verify that they are in the closed position.
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!GS FPER LGS Design Appropriate steps are taken to ensure that fire doors either are closed or will close when required in the event of a fire.
One of the four measures listed above is followed for each fire door.
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