ML17326B145

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Suppl 2 to App R Evaluation of Auxiliary Bldg HVAC Duct Penetration & Containment Seismic Gaps.
ML17326B145
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Site: Cook  American Electric Power icon.png
Issue date: 08/31/1984
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UNITEDSTATESNUCLEARREGULATORYCOMMISSIONDOCKETNO.50-315DOCKETNO.50-316SUPPLEMENTTWO10CFR50,APPENDIXR,SECTIONIIICUNITS18r2.lNjDIANA8r.MICHIGANELECYRICCOMPANYAMERICANELECTRICPOWERSYSTEMAUGUSTt984.0-8408i703278408i3'DRADOCK050003i5FPDR PLEASENOTE:Thehand-writteninformationinthisreportwasinadvertentlyleftoutofthefinalcopyofthereportsuppliedtousbyourconsultant.Itwillbeincludedinallfuturecopies.

HVACDUCTPENETRATIONANALYSIS APPENVDIXREVALUATIONOFAUXILIARYBUILDINGHVACDUCTPENETRATIONSANDCONTAINMENTSEISMICGAPSFORTHEDONALDC.COOKNUCLEARPlANT1.0IntroductionInMarch1983,areportentitled"Safe-ShutdownCapabilityAssessmentandProposedModifications"wasissuedfortheDonaldC.CookNuclearPlant,Units1and2.Thereportidentifiedthesafeshutdownsystemrequirementsrelativetothefireprotectionguidelinesof10CFR50AppendixR.Asaresultofthecontinuingfireprotectionprogramupgradeandmodificationimplementationprogram,IndianaandMichiganElectricCompanyidentifiedthefollowingareasofconcernwithrespecttoAppendixRconformanceattheD.C.CookNuclearPlant:1.Twenty-twoventilationductpenetrationspassthroughfireareafloors/ceilingsatvariouselevationsandarenotsuppliedwi'thfiredampers.2.Thefirezones/areasadjacenttotheContainmentBuildinghaveseismicgapswhichseparatethefloors,ceilingsandwallsofthesezones/areasfromtheContainmentBuilding.Eachoftheseconcernshasbeenevaluatedseparatelytodeterminetheirimpactontheplantsafeshutdowncapabilityintheeventofafire.Theanalysisaddressesthefollowing:1.Locationofsafeshutdowncomponentsandcircuits.2.Methodofsafeshutdowncomplianceusedinazone/areaofconcern.3.Existingandproposedfireprotectioncapabilities.4.Combustibleloadingofthezone/areaofconcern.Page1 TheMarch1983submittalwillbetheprimarysourceofinformationwithmoredetaileddatasuppliedasitrelatestospecificzones/areas.Thisanalysisincludesattachedfiguresandtablestoprovideabetterunderstandingofspecificconcerns.Eachconcernwillhaveamethodology,evaluationandconclusionsection.2e0VentilationDuctEvaluationMethodoloThisanalysishasbeencompletedtoprovidetechnicaljustificationfornotinstallingfiredampersintheventilationsystemductpenetrationswhichcommunicatebetweenfireareasverticallyfromelevationtoelevation.Theventilationductsassociatedwiththe22penetrationswerelocatedonHVACdrawingsshowingtheentireflowpathofeachduct.Penetrationsintozones/areasequippedwithratedfiredamperswereeliminatedandwhatremainedisdepictedonFigures1through8attached.Theregistersintheremainingductswerelocatedwiththedirectionofthearrowsoneachdefiningwhetheritis~~(~)or(g+).EachfigurerepresentstheelevationaoftheAuxiliaryBuildingshowingbothunits.Thecirclednumbersonthefiguresrepresentfirezones/areasfoundandthenumbersnexttothearrowsindicatetheregisternumberfoundincorrespondingI'ables1through6.Onlythefirezones/areascontainingtheductingofconcernarerepresentedonthefigures.Thefiguresareletter-codedtoidentifythefireareainvolvedanddefinedattheboundarieswiththeuniquemarkings.ForPage2 detailedboundariesofeachfireareaorzoneandspecificheSection2F~res2.1Thefiguresaremeantorregisterinafiregeneralarrangementdrawings,refertotPthrough2.11oftheMarch1983submittal.toindicatethepresenceoftheductzone/areaandnottoprovidespecificlocations'ithinthezone/area.Tables1through6identifythespecificAmericanElectricPowerServiceCorporationHVACdrawingnumberandthedrawingcoordinatestolocatetheregisters.The22ductpenetrationsandassociatedregisterswereevaluatedindividuallyasdepictedonthefigures.Theregisterswithinazone/areawereevaluatedwithrespecttosafeshutdowncomponentandcircuitlocations.TheMarch,1983submittalconsideredfiredamagetosafeshutdownsystems,componentsandcircuitswithinareasandzones.Thissameinformationwillbeutilizedasappropriatetoresolveissuesarisingfromtheregisterlocationswithinafirezone/area.Thegeneralapproachwasto1)considertheeffectonSectionIII.G.2compliance,i.e.,evaluatethedamagetoredundantsafeshutdownequipmentand/orcircuits,and2)considertheeffectonSectionIII.G.3,i.e.,evaluatedamagetoalternateshutdownequipmentand/orcircuits.Thus,whereanindividualductcommunicatedwithdifferentzonesorareas,theductpenetrationsandregisterswereevaluatedtodeterminetheimpactonthetwocasesjustdescribed.Bothcasesconsiderarea/zonecommunicationbetweenelevationsandatthefirearea/zoneboundarieswheretheductPage3 penetrationwasnotprovidedwithafiredamper.Theimpactofductsandregistersonsafeshutdownalsoconsidersthelocationofsuppressionanddetectionsystems,theamountofcombustiblematerialinthezone/area,andparticularlytheprovidedmethodofsafeshutdownasdescribedintheMarch1983submittal.Thestairwayscommunicatingbetweenelevationshavebeenprovidedwithautomaticsuppressionsystemstomaintainelevationsasseparatefireareas.Themechanicalandelectricalceiling/floorpenetrationsarebeingprovidedwithsealsinaccordancewiththeMarch1983submittal.Thecombustibleloadingvaluesandsurfaceareaspresentedaregivenfortheentirefirearea.Plantwalkdownshavebeenperformedandphysicalracewaylocationdrawingshavebeenevaluatedtodeterminethatthecombustibleloadinginthefireareasevaluatedisuniformlydistributedthroughthearea.Fireareascontainingconcentratedcombustibleswillbe,specificallydiscussedintheevaluationofthearea.2.1EvaluationofFiure1TheexhaustductrepresentedonthisfigureisdesignedtoremovewarmairfromvariousareasofUnit1anddischargestotheairshaftatthenorthendofFireZone44.Thisfigureshowstwoductpenetrations(30"x26"and72"x30").Thefollowingsummarytablesprovidethefireprotectionfeaturesandsafeshutdowncompliancemethodsforthezones/areasofconcern.Page4 oFireprotectionfeaturesFireArea/ZoneDetectionIonizationDetectorsSuppressionIAutomaticSuppressionlSysteminStairwayonly6NIonizationDetectorsAutomaticPreactionSprinklerIonizationDetectorsAut'omaticPreactionISprinkierII44NISprinkierIIIonizationDetectorsAutomaticPreactionIoSafeshutdowncompliancemethodsFireArea/ZoneComplianceMethodsCablesrequiredforsafeshutdownarebeingprovidedwithfirewrapping.6MOnedivisionofredundantsafeshutdowncablesforeachunitisbeingprovidedwithfirewrapping.6NModificationsarebeingimplementedtoprovidealternativeshutdowncapability.44NModificationsarebe,ingimplementedtoIprovidealternativeshutdowncapability,IPage5 AsshovninFigure1,theairshaftextendsuptothe633ftelevationwheretheexhaustfans,creatinganegativepressureintheairshaft,expelthewarmairtotheatmosphere.FireZone1,onthe573ftelevation,isaportionofFireAreaAvhichalsocontainsfirezones1AthroughlH.Thesafeshutdovncomponentswithinthisarea(RHRpumpsandassociatedcables)willbeprotectedfromfireasdefinedintheMarch,1983submittal.Theventilationductregistersinthisarea,asshovnonFigure1,arelocatedwithinthenorthsectionofFireZone1,vhichonlycontainsRHRpumpcables.ThecablesvithinFireZone1requiredforsafeshutdovn(RHRpumppowercables)arebeingprovidedvithfirevrappingandthusvouldnotbeaffectedbyhotgasesorcombustionproductsfromtheventilationregistersinthisfirezone.Inaddition,thefireareahasaverylowcombustibleloading(2666BTU/ft)withanequivalentfireseverityoftwominutes.Theareaalsocontainsautomaticdetectionvithineachfir'ezone.Themechanicalandelectricalpenetrationsthroughtheceilingtothe587ftelevationaresealedincludingthe30"x26"ventilationductexitingFireZone1intoFireZone6N.FireZone6NcontainstheductpenetratingfrombelowasshovninFigure1.FireZoneGNonthe587ftelevationisaportionofFireAreaB,whichalsocontainsFireZones6M,6S,5,64A,64B,65Aand65B.FireZone6NcontainsmotorcontrolcentersasveilasvariousredundantsafeshutdovnsystemPage6 componentcablesforUnitl.However,FireZone6N,asdescribedintheMarch1983submittal,willbeprovidedwithalternateshutdowncapability.Thezoneisalsoequipoedwithautomaticsuppressionanddetection(enhancedsinceMarch1983submittal).FireAreaBhasaverylowcombustibleloading(9331BTU/ft)withanequivalentfireseverityofsevenminutes.TheautomaticsuppressionsystemforFireAreaBcontainsapproximately168sprinklerheadswhichprovidecoverageforapproximately23,6004ft.Fiveofthesprinklerheadsarelocatedwithinatenfootcylindricalradiusoftheductpenetrationthroughthefloorandadditionalsprinklersarelocatedinthevicinityoftheregistersandremainingductwork.Thefireareaalsocontainsapproximately36ionizationtypedetectors.Theregistersintheareawiththeexceptionofregister5arealllocatedinthenorthsection(FireZone6N).Register5islocatedinfireZone6MwhichcontainsredundantsafeshutdowncircuitsandwhichhavebeenprovidedwithfirewrappingprotectionofoneredundantdivisionforeachunitasdescribedintheMarch1983submittal.FireZone6Misalsoprovidedwithautomaticsuppressionanddetection.Thesesystemsinconcertwithinstalledfirewrappingprovideadequateprotectionfromhotgasesandcombustionproductspotentiallytransmittedthroughtheventilationsystem.FireZone6Nisprovidedwithsealsinthemechanicalandelectricalceilingpenetrationstothe609ftelevation,includingtheventilationductexitingintoFireZone44N.Page7 FireZone44N,locatedonthe609ftelevation,isapartoftheFireAreaC,whichalsocontainsFireZones44S,44Athrough44H,and37.FireZone44Ncontainsmotorcontrolcentersandvariousredundantcablesofsystemsrequiredforsafeshutdown.AsindicatedonFigurel,alltheregistersarelocatedinthenorthend.Thelargeduct(72"x30")penetratingthefloorfromthe587ftelevationhassevensprinklerheadsatthe609ftelevationwithinatenfootcylindricalradiusofthepenetration.Intotal,FireAreaCcontainsapproximately240sprinklerheadscoveringanareaofapproximately20,000ftTheareaalsocontainsapproximately30ionizationtypedetectors.Adequatecoveragefortheductandtheregistersisprovidedbythesefireprotectiondevicestoensureadequateprotectionfromhotgasesandcombustibleproductspotentiallytransmittedthroughtheventilationsystem.Inaddition,FireZone44Nwillbeprovidedwithalternateshutdowncapability.AsindicatedinTable5-2inSection5oftheMarchl983submittal,bothFireZones6Nand44Nhavethesamesystemsandcomponentspotentiallyaffected.ThusthecommunicationofthetwozonesdoesnotaffectthecompliancestrategynorthesafeshutdownFi'~<~~<<CA~~g~~/u~~~gas).g/p'capability.~<~>>>>~~~~/p~)cuac,~Q~seuenrg~opsia~i~uP~m2..2EvaluationofFiure2Figure2hasasimilarductconfigurationasFigurel,butrepresentsUnit2.Thisfigurerepresentstwoductpenetrations(25"x28"and36"x24").Thefollowingsummarytablesprovidethefireprotectionfeaturesandsafeshutdowncompliancemethodsforthezones/areasofconcern.Page8 oFireprotectionfeaturesIIFireArea/ZoneIDetectionIonizationDetectorsSuppressionIAutomaticSuppressionlintheStairwayonly6SIonizationDetectorsAutomaticPreactionSprinkler6MIonizationDetect'orsAutomaticPreactionSprinklerIonizationDetectorsAutomaticPreactionISprinklerIoSafeshutdowncompliancemethodsFireArea/ZoneComplianceMethodsCablesrequiredforsafeshutdownarebeingprovidedwithEirewrapping.Modificationsarebeingimplementedtoprovidealternativeshutdowncapability.6MOnedivisionofredundantsafeshutdowncablesforeachunitisbeingprovidedwithfirewrapping.44SModificationsarebeingimplementedtoIprovidealternativeshutdowncapability.IPage9 ThefirezonesarelocatedwithinthefireareaspreviouslydescribedintheFigure1evaluation,socombustibleloadingsandfireseveritiesarethesame.The573ftelevationisthesameastheUnit1side,includingthecableandcomponentconfiguration.TheHVACsystemconfigurationonthe587ftelevationissimilartoUnit1.FireZone6SwillbeprovidedwithalternateshutdowncapabilityandcomplianceinFireZone6MisdescribedintheFigure1evaluation.Thepenetrationthroughthefloortothe587ftelevationwithinFireZone6Shasonesprinklerheadtoprovidewatersuppressionintheimmediatevicinityoftheverticalrun.Thepenetrationareaofthe36"x24"ductisprotectedbyfoursprinklerheadsinFireZone44Swithinatenfootcylindricalradiusoftheducttopreventductrelatedfiredamage.Also,FireZone44Swillbeprovidedwithalternateshutdowncapabilitywiththeexceptionofthecomponentcoolingwaterpumpswhich,asdescribedintheMarch1983submittal,areprotectedtoensuretheavailabilityofatleasttwoCCWpumpsforsafeshutdown.2.3EvaluationofFiure3Figure3hasasimilarfigurerepresentsasingleconfigurationasFigure2,butthisductwithtwopenetrations(each44"x24").Thefollowingsummarytablesprovidethefireprotectionfeaturesandsafeshutdowncompliancemethodsforthezones/areasofconcern.Page10 oFireprotectionfeaturesFireArea/ZoneDetectionSuppressionIonizationDetectorsAutomaticPreactionSprinkler44SIonizationDetectorsAutomaticPreactionSprinkler52IonizationD'etectorsIAutomaticPreactionIl"SprinklerIIIoSafeshutdowncompliancemethodsFireArea/ZoneComplianceMethods6SModificationsarebeingimplementedtoprovidealternativeshutdowncapability.Modificationsarebeingimplementedtoprovidealternativeshutdowncapability.52Modificationsarebeingimplementedtoprovidealternativeshutdowncapability.ITheductispartofthesupplyventilationsystemcomingfromthe633ftelevationdowntothe587ftelevation.AsindicatedonFigure3,oneregisterisonthe587ftelevationinFireZone6S.Theshutdownmethod,fireprotectionfeaturesandcombustibleloadingaredescribedintheFigure2evaluationforthiszone.ThepenetrationintheceilingofFireZone6SisPagell protectedbytwosprinklerheadslocatedinthe587ftelevationwithinatenfootcylind.icalradiusoftheductpenetration.TheductfromthefloortotheceilingwithinFireZone44Siscontinuouswithnoregisteropenings.AdditionalprotectionisprovidedbyatleastfivesprinklerheadsintheimmediatevicinityoftheductinFireZone44S.Theductpenetratingintothe633ftelevationhasaregisteropeninginthesouthendofFireZone52,whichispartofFireAreaD.ThepenetrationthroughthefloorintoFireZone52hassixsprinklerheadswithinatenfootcylindricalradiusoftheduct.FireZone52hasalternateshutdownprovisionsforthemainsteamsystemlocatedoutsideFireAreaD,whileallothersafeshutdownsystemswithinFireAreaDhaveatleastoneredundanttrainlocatedoutsidethearea.Coldshutdownsystemsrequiremanualoperationofvalveswhicharealsolocatedoutsideofthearea.FireAreaDisequippedwithautomaticfiresuppressionanddetectionandcontainsapproximately222sprinklerheadsinFireZone52andapproximately87sprinkierheadsinFireZone51.FireAreaDhas39ionizationdetectors,including17inFireZone52.Thetwocharcoalfilterunitsinthisfirezoneareprotectedbyautomaticdelugesystemsactuatedbyathermistor61VCUlt~+IfQpR~g~flycWAkl)(0AJCD&$~5pl)lje/OhKEghgf/3'380BTu,l~/?ir//+)~~~~rt~<<roe"i4gdpPent~rw>>Y<s,Page12 2.4EvaluationofFiure4rFigure4representsoneductpenetration(30"x24")andissimilartoFigures2and3(seeSection2.3).Theexhaustductshowncommunicateswithr"ireZones6Sand44S,andisductedtotheairshaftyfitheextremesouthendofrFireZone44S.TheductinFireZone6S,hasregisteropenings,butiscontinuouswithnoregisteropeningswithinFireZone44SandisadjacenttotheductdescribedinFigure3.ThesprinklerheadarrangementisidenticalforboththeductslocatedinFireZone44SasshowninFigures3and4;therefore,theevaluationperformedinFigure3appliestoFigure4.Forfireprotect'onfeaturesandsafeshutdowncapabilitycompliancemethods,refertoSection2.3,FireAreas/Zones6Sand44S.2.5EvaluationofFiure5Figure5representstwoductpenetrationsofthesamesize(52"x24")whichcommunicatewithFireZones6Nand44N.Thefollowingsummarytablesprovidethefireprotectionfeaturesandsafeshutdowncompliancemethodsforthezones/areasofconcern.oFireprotectionfeaturesIIFireArea/ZoneIDetectionSuppression6NIonizationDetectorsAutomaticPreactionSprinkler44NIonizationDetectorsAutomaticPreactionSprinklerPage13 oSafeshutdowncompliancemethodsIIFireArea/ZoneIComplianceMethodsModificationsarebeingimplementedtoprovidealternativeshutdowncapability.44NModificationsarebeingimplementedtoIprovidealternativeshutdowncapability.IIITheexplanationof'safeshutdown,fireprotectionfeatures,andcombustibleloadingsarecontainedintheevaluationofFigure1.Theductsshownareparalleltoeachother.ThepenetrationsthroughtheceilingofFireZone6Nareprotectedbytwosprinklerheadswithina16footcylindricalradiusoftheducts.Theseducts,asshowninFigure5,arecontinuousinFireZone44Nwithnoregisteropenings.AdditionalprotectionoftheductpenetrationisprovidedbytwosprinklerheadseachoverthepenetrationfromFireZone44Nintothesupplyairplenum.2.6EvaluationofFiure6Figure6representsoneductpenetration(34"x30").Theduct,asindicatedonFigure6,enterstheauxiliarycablevaultinUnit2whichisequippedwitharatedfiredamper.TheductcontinuesfromtheauxiliarycablevaulttoFireZone52whichisalsoequippedwithafiredamper.ForfireprotectionfeaturesandsafeshutdowncapabilitycompliancemethodsrefertoSection2.3,FireZones6S,44Sand52.Theductpenetrationatthe609Page14 ftelevationisprotectedbythepresenceofthreesprinklerheadswithinatenfootcylindricalradiusonthe6Ssideandtwoonthe44Sside.2.7EvaluationofFiures7and8Figures7and8representatotalofl2ductpenetrations(four45"x35",two40"x40",two36"x36",two22"x34"andtwo28"x34"),withUnit2beingamirrorimageofUnit1andeachIunitcontainingsi.xductpenetrations.Thefollowingsummarytablesprovidethefireprotectionfeaturesandsafeshutdowncompliancemethodsforthezones/areasofconcern.oFireprotectionfeaturesFireArea/ZoneDetectionSuppression49IonizationdetectorsandThermistorsforcharcoalfilterunitAutomaticdelugeforcharcoalfilterunit50IonizationdetectorsandThermistorsforcharcoalfilterunitAutomaticdelugeforcharcoalfilterunit69IonizationdetectorsandThermistorsforHVACunitsAutomaticdelugeforcharcoalfilterunitPage15 oSafeshutdowncompliancemethodsFireArea/ZoneComplianceMethodsAtleastoneredundantdivisionofsafeshutdovncablesislocatedoutsidethefirearea50Atleastoneredundantdivisionofsafeshutdowncablesislocatedoutsidethefirearea69includingItheHVACvesti-IbulesontheI650fteleva-ItionIIThelocationscontainnosafeshutdownsystems,componentsorcables.TherearenoregistersoropeningsintheductsshownonFigures7and8,hovever,theydocommunicatefromFireAreaDinZones49(Unit1)and50(Unit2)toFireZone69includingtheHVACvestibulesatthe650ftelevation.FireZones49and50,aspartofFireAreaD,havebeenanalyzedforsafeshutdovnvith,theSectionII1.G.2compliancemethodspresentedintheMarch1983submittal.FireZone69includingtheHVACvestibulesonthe650ftelevationandtheareainwhichtheyarecontainedhavenosafeshutdovnequipmentorcircuitslocatedinthem.FireAreasDandEwerecombinedforthepurposesofthisanalysis.BecauseFireAreaEcontainsnosafeshutdowncomponentsorcircuits,thecombinationoftheseareasdoesnotchangethemethodofsafeshutdovnforFireAreaD.~z'r(.A~aOuelql~w-eeeg~+A(w/OPAL>l(jgI~35If'/gz)>(~gve.~~'~~~Page16 3.0ConclusionsforVentilationDuctPenetrationEvaluationThisanalysishasbeencompletedtoprovidetechnicaljustificationfornotinstallingfiredampersintheventilationsystemductpenetrationswhichcommunicatebetweenfireareasverticallyfromelevationtoelevation.Thefireprotectionfeatures;e.g.suppressionanddetectionsystemsand/orthelowcombustibleloadingswithintheseareasprovideadequateassurancethatfiredamagerelatedtoventilationductingwillnotimpairsafeshutdowncapability,Themajoremphasis,however,shouldbeplacedonthemethodofcomplianceandsafeshutdownforeachofthefirezones/areasinvolved.Thecenterlinefirezonesonthe587ftand609ftelevationswillbeprovidedwithfirewrappingforsafeshutdowncircuits.Thenorthandsouthportionsofbothelevationsarebeingmodifiedtoprovidealternatesafeshutdowncapability.Elevations587,609and633havebeenmodifiedtoprovideadditionalautomaticsuppressioncoverage.Alsotheregistersbetweenandwithinelevationshavebeenevaluatedanddeterminednottocommunicatebetweenredundantsafeshutdowncomponentsorcircuits.Asinglefirestartinginoneofthefireareasofconcern,whicharecommunicatingthroughverticalundamperedducts,wouldnotaffectsafeshutdowncapability.Thetechnicalbasisforthisanalysisissummarizedbelow:(1)Existingsuppressionsystemsinareas/zoneswhichareprovidedwithautomaticsuppressionsystemswillextinguishthepostulatedfireandfirewillnotpropagateoutsideofthearea/zone.Page17 (2)Combustibleloadingcontainedinthefireareas/zonesofconcernisverylow.(3)Infireareas/zoneswhicharenotprovidedwithautomaticsuppressionsystems,therequiredsafeshutdowncomponentsand/orcablesarebeingprotected.(4)Afirestartinginanareacouldbeassumedtopropagatetotheadjacentareathroughverticalundamperedductpenetrations.However,safeshutdownoutsideoftheseareasstillcanbeachievedusingtheunaffectedtrainoralternatesafeshutdownmethod,Inconclusion,thisanalysisverifiesthatthesafeshutdownsystemrequirementsrelativetotheguidelinesofAppendixRarebeingmetandtheexemptionfrominstallationoffiredampersintheventilationductsisjustified.Page18 4.0SeismicGaEvaluationMethodoloAseismicgapexistsaroundtheContainmentBuildingofeachunitvhichprovidesanopeningofapproximately6"betveentheContainmentBuildingandthewalls,ceilingsandfloorsofthestructuresimmediately.adjacenttocontainment.TheMarch1983submittaldidnotaddresstheseismicgapwhenfireareaboundariesveredefined.Thus,thisevaluationhasbeenperformedtoconfirmthattheseseismicgapsinthefireboundariesdonotaffectsafeshutdowncapability.Thefireareasandzonesadjacenttotheperimeterofcontainmentvhichcontainseismicgapsarethefolloving:FireAreasasPresentedbyTable1-1FireArea78101138DescritionQuadrant1CableTunnelQuadrant4CableTunnelQuadrant3MCableTunnelQuadrant3SCableTunnelQuadrant2CableTunnelElevation596ft596ft596596ft612ftFireAreasasPresentedbyTable1-2FireAreaDescritionElevation2324262739Quadrant3NCableTunnelQuadrant3MCableTunnelQuadrant4CableTunnelQuadrant1CableTunnelQuadrant2CableTunnel596ft596ft596ft596ft612ftPage19 FireAreas/ZonesasPresentedbyTable2-1FireArea/ZoneDescritionElevation33B124969108NESWValveAreaQuadrant2PipingTunnelHVACVestibuleAuxiliaryBuildingWestSteamValveEnclosure612ft596ft633ft650612ftFireAreas/ZonesasPresentedbyTable2-2FireArea/Elevation34B225069109NESWValveAreaQuadrant2PipingTunnelHVACVestibuleAuxiliaryBuildingWestSteamValveEnclosure612ft596ft633ft650ft612ftTheMarch1983submittal,theprimarysourceofinformationforthisanalysis,con'tainsadditionalinformationonthefireareaandzonedescriptions.Theattachedtables(l-l,1-2,2-1,2-2)provideasummaryoftheevaluationsperformedontheareasorzonesaffectedbyseismicgaps.Thegeneralmethodologyusedwascoevaluatethearea/zoneofconcerninconcertwiththeadjacentareas/zonesontheleft,right,andimmediatelyabove.Thenewareadefinedbythismethod(seismicgapevaluationarea)wasanalyzedtodeterminetheimpactonsafeshutdowncomponentsandcircuits.Fourfireareas,aspreviouslydefinedintheMarch,1983submittal,containmultiplezoneswithintheareaandarepartofthisanalysis.Page20

~II~Theseismicgapevaluationareasonlyconsidersthezoneorareaimmediatelyadjacenttothepostulatedfirearea.Thisconfigurationassumestheseismicgapwillallowcommunicationbetweenadjacentareasorzones.Duetodistance,lowcombustibleloading,locationofcombustiblesand/orpresenceofdetectionandsuppressionsystemstheaffectofthefirewillnotinvolveallareasandzoneswhichcommunicatebyseismicgaps.FireZones33and33AwerenotconsideredwithintheseismicgapevaluationastheyareonlyadjacenttoeachotherandFireZone33B.FireZones33,33Aand33BwereevaluatedasoneareaintheMarch1983submittal.FireZone33BisconsideredinthisevaluationandincludesFireZone33Aaspartoftheseismicgapevaluationarea.Themirrorimagezones(34,34A,34B)inUnit2wereconsideredinasimilarmanner.ThecommunicationbetweenFireZones49and50isthroughFireZone52separatedbyover150feet.FireZone51isadjacentto52.FireZones49(Unit1)and50(Unit2)aretheonlyzoneswithintheareawhichcontainseismicgapsatthecontainmentwall.Thecommunicationbetweenfirezones49and50withinthisareawasevaluatedintheMarch,1983submittal.FireZone52isprovidedwithautomaticsuppressionanddetectionandthusprovidesadequateassurancethateitherafireorrelatedcombustionproductswouldbecontainedwithinFireZone49(thesameconfigurationexistsforFireZone50).Thefire'reacontainingzones3,32,36,69,and48containnosafeshutdownequipmentandcouldhavebeenPage21 includedintoalargerareabuttominimizethesizeoffireareasthesefirezonesareconsideredasonearea.Thecompliancestrategies(i.e.,safeshutdownmethod)foreachareaorzonearemaintainedandusedthroughouttheevaluationwhiletakingintoaccountadditionalconsiderationssuchas:1.2.3.4~Distancebetweenfirezones/areasLocationofcombustiblesCombustibleloadingDetectionandsuporessionsystems4.1EvaluationofTables1-1hnd1-2,FivepreviouslydefinedfireareasineachunithaveautomaticC02suppressionanddetectionsystemsinthearea.TheseareasarelistedinTables1-1and1-2.Thewalls,floors,andceilingsofthetenareas(includingbothunits)areconstr'uctedtoatleastal-l/2-hourfirerating.Asealintheseismicgapsprovidesabarrierforcontainingthegaseoussuppressionsystem.Thesealisaffixedtoboththecontainmentwallandthefloor,ceilingorwalloftheperimeterbuildings.Thesealismadeofglassfiberreinforcedsiliconesheetingandisafireretardantmaterial.Afireoriginatingwithintheareascontainingautomaticsuppressionwouldstayconfinedtothatareaandbeextinguishedbytheautomaticsuppressionsystem.Thus,eachofthesetenareaswasevaluatedasanisolatedareabasedontheassumptionthatthefirewithintheareascontainingsuppressionsystemswouldbecontainedandextinguishedinthearea.Page22 4.2EvaluationofTables2-1and2-2Evaluationsofareasorzones,wh*ichwerenotequippedwithautomaticsuppressionsystems,consideredthesealdamagedinadjacentareas/zones(left,rightandabove)includingthosecontainingautomaticsuppression.EachnewlydefinedevaluationareawasreanalyzedonasafeshutdownsystembasiswiththeresultspresentedinthesystemevaluationcolumninTables2-1and2-2.Theareasand/orzonesofconcernwhichdonothaveautomaticsuppressionsystemshavelowcombustibleloadingsandwithintheimmediatevicinityoftheseismicgapsaregenerallyvoidofexposedfixedcombustibles.Thezones/areasofconcernarepresentedinTables2-1and2-2.Excludingtheareascontainingautomaticsuppressionfromthepostulatedfirelocation,thefollowingcombinationsofareas/zonesareevaluated:Unit1PostulatedFireLocationsandAssociatedZones/Areasl.2.3.5.33Bwith33A,38,108and4912with7,ll,33Band3849with69and10869with108108with49and69Unit2PostulatedFireLocationsandAssociatedZones/Areasl.2.3.4.5.34Bwith34A,39,109and5022with27,23,34Band3950with69and10969with109109with50and69Tables2-1and2-2presenttheresultsofthesystemevaluationforeachpostulatedfirelocation.Page23 5.0ConclusionforContainmentSeismicGaEvaluationThisseismicgapevaluationshowsthesafeshutdowncapabilityforD.C.CookNuclearPlant(Units1and2)hasnotbeencompromisedasaresultofseismicgaps.Theanalysisperformedandtheresultspresentedinthetablesindicateonasystembasis,thecapabilitytosafelyshutdownbothunitswhenconsideringfiredamagetosafeshutdowncomponentsandcircuitscontainedintheseismicgap.evaluationareas.Themethodofanalysisisconservativewhenconsideringthefirehazardsinvolvedinthevicinityoftheseismicgaps.Thatis,itisnotanticipatedthattheevaluatedareaswouldbeaffectedtotheextentthatfirewouldpropagatethroughtheseismicgapsandcausedamagethroughouttheevaluationarea.Combustionproductswouldlikelyentertheadjacentareasorzones,however,damagetosafeshutdowncomponentsandcircuitswouldlikelynotoccur.lnanyevent,theanalysiscontainedhereinassumesthedamagetosafeshutdowncomponentsandcircuitsintheseismicgapevaluationareadidoccurandverifiesthatsafeshutdowncapabilityismaintained.Page24 FIG.1.isama~is~Ar~<<4ie~i'p~+>>cQ9QEri4~iPXWiXO+i'~K+)X4%+S4+.UNIT2650'33'QCleQ0506seRelRO4..(glcONehesewORINktsBo!$cR5ResEIegeeeeameaeweaea~QoOsoQDQ52g4CIS/yjg/2.C44609'2>cZOsQg4/o6BB587'73' UNIT1UNIT2FIG2Ai.iJktFAkaFA8AArA+AC/A',69QEw.a4z.wX4XO4NR4XMCOXNi4'4650'33'SSoSI0El0II0IIssessesIVVgYYJ'4QIVxvJXARPVO49QDSS~ISIS4!S4SSOSS~SS~ISSSSSSSISOSSCSSS4SSSS4C~~EloDosIossosseIs~QDO69q/o//C4405206Qg6B6B587'73' UNIT1UNIT2650'IG.3OoXA.rX'rarVrMw4iwr',ir.'r4r.ir.4h4a)4i.r444'.r4@+44'9OE"ir'lg'vr+rv/rvr'vp'rrvrvvrlvpYLrf'Cr~OEIOSOAOSOSO~Hvacsu>tvODQ2633'OS060dSOSSQ9ODOdOSOSOSOSOSOSSSSOSdAOAS4CODQ66C44609'Oa6B6587'73' UNIT1UNIT2rVa+aw'rarr.s+r,vr.a+riA+Ah+.vrI4+6)+l,ht650'IG.4'ODgrAYr)rvAo'rip'vrrvrvr+Vvrvr~rrASArvrwvvvrvwvrvrvr~OheaOSOaeOeOOODO52E.633'l0h010ndoll0g49ODOhohododRlWRI0hohhElohdOgQD(y4CC44609'Qg6B6B587'73' 650'IG.5dOQDQ9QE~C4;rpvvyvspyYY1vvlvv\VYVw'VoOaeaoaodedh0ODO52I633a0ao60ahohaaaoO4sQDaeaeaeheaoahaaheaaaoraQO4C44609'B6B587'73' UNIT1UNIT2FIG.6+raA+raAAArvAC(aeggQE'r++o'XwrrXQ+~is'igXOO'4650'33'Q5e5e5e8RemwIvrvrvgavgvvrvr,vvvvsvr'v~v~rgO4gQDtf~lllgeWOmoSOSIOSR%mNEl0QOQgvv'vrvvrv\v'vfv00Qosos4%48cl0QDoQ:.4CC44609'QB6B6B587'73' UNIT1UNIT2'69F'FIG.7650'ODI"rV'NVYvYrvr1rv,Kr'rYrrr4Oh4h4h4hORIOR14~ExHD524633'hOhRlORIOhOR10hhRlhRlhOhIROhRl4CC44609'QB6B68587'73' FIG.8SUPPLYExHaUST.EXOWuhTSuf'PLY0EPEECoNT-'OLU<EL~3IbSUF'I'LYFAIvS69OEuf'PLYFW~SAA('.1AV/A~ArA(kAlPAr1th+i+A%+AX%30'tA)4AaVIFX'NYlk+0)C?UPf'ECcod7.'OI.UhlE0650'0I~/040//0~ttf%eg,YVIQPYJ(YLowER'ooT.VOLUPhE633'xHhus~FANSQ49ODerorea~rorororogororororeaoaeaor~NoaeroQsoODFXHAu6TFhh/D~roaoroaerororeaoroaoaeraeroaoaororoaer28x3"/LoweeG0AT'oLUP1~609' TABLE1AIRREGISTERLOCATIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESDRAWINGNUMBER1012131415ReactorCoolantDrainTankPumpPipeTunnelDrainTankandPun<pSumpPumpRoo<nReactorCoolantFilterUnit1ValveOperatingGalleryBoricAcidEvaporatingRoo<nSealwaterInjectionAreaPipewayGasDecayTankRoomTunnel.Elevation601ftVolumeControlTankConcentrateHoldingTankWasteGasCompressorRoomConcentrateHoldingTankWL-4.58.WofWL-MWL-4.78,WofWL-MWL-5.3ItWofWL-MWL4.58.EofWLLWL5.58WL-MWL-3.68.WL-KWL48WL-KWL4.58WotWL-MWL4.58.WL-MWL-4.68WofWL-LWL58.WofWL-LWL-58.EofWL-LWL-5.28.WL-KWL-4.48.EofWL-KWL-5.28.WL-K12-5713-412-5713-412-5713-412-5713-412-5715-1012-5715-1012-5715-1012-5715-1012-5715-1012-5715-1012-57i5-1012-5717-712-5717-712-5717-712-5717-7Page1of1 TABLE2AIRREGISTERLOCAfIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESDRAWINGNUMBER1012PipeTunnelReactorCoolantDrainTankSumpPump8.TankPipewaySealWaterInjectionFiltersWL-7.58WL-MWI-7.38,WL-MWL-78.WL-MWLB8,WL-MWL68WLMMonitorTankAreaMonitorTankAreaMonitorTankAreaMonitorTankAreaVolumnControlTankAreaSealwaterIieetExchangerAreaWf-0.48.WL-MWL-B8.WL-h'IWL-7.68,WL-MWL-7.38WL-MWL-78.EofWL-MWL-78EofWL-MReaCtOrCOOIant/SealWate(FilterWL-6.48.WL-hi12-5713-412-5713-412-5713-412-5715-1012-5715-1012-5/15-1012-5717-712-5717-712-5717-712-5717-712-5717-712-5717-7 TABLE3AIRREGISTERLOCATIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESDRAWINGNUMBERBehindMCC'sonElevation587WL-8KEofWL-MIElevation633ftUnit2SideWL-B.28.WofwL-M12-5715-1012-5719-7Page1of1 TABLE4AIRREGISTERLOCATIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESDRAWINGNUMBERValveGalloryPipeTunnelGasDecayTankRoomBoricAcidEvaporatorValveOperatinOGalleryWL-78.WofWL-LWL-7ItWofWL-LWL-B8.WL-KWL-B.58WL-K12-5715-1012-5715-1012-5715-1012-5715-10PaBe1of1 TABLE5AIRREGISTERLOCATIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESORAWINGNUMBERCVCSFacilityCVCSFacilityWL-4.4aWL-LWL-4.48.WL-L12-5715-1012-5715-10Pape1of1 TABLE6AIRREGISTERLOCATIONAIRREGISTERNUMBERAREALOCATIONCOORDINATESORAWINGNUMBERMonitorPuinpsWL"B8WL-L12-5715-10PMUe1of TABLE1-1UNIT1FIREAREAS/ZONESPROTECTEDBYAUTOMATICC02SUPPRESSIONFIREAREA~COMBUSTIBLELOADINg(BTU/FT)-EQUIVALENTFIREAREASEVERITY(FT)I(MIN)SUPPRESSIONDETECTIONColIhtErrT115.0319soI88C02AUTOMATICIONIZATIONANDINFRAREDTYPESEXISTINGAUTOMATICC02SUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTULATEOFIREINTHEAREA/ZONEANOTHEFIREWILLNOTPROPAGATEOUTSIDEIOFTHEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIANCEMETHODSSTILIAPPLY.30'951.SSOI23COZAUTOMATICIONIZATIONANDINFRAREDTYPESEXISTlNGAUTOhlATICCOZSUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTULATEOFIREIt(THEAREA/ZONEANDTHEFIREWILLNOTPROPAGAlEOUTSIOEOFTHEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIAtrCEMETHODSSTILLAPPLY.10103,54228,2788007417821COZAUTOMATICC02AUTOhIATICIONIZATIONANDINFRAREDTYPESIONIZATIONANDINFRAREDTYPESEXISTINGAUTOh1ATICC02SUPPRESSIONSYSTEMWILLEXTlNGUlSHANYPOSTULATEDFIREINTHEAREA/ZONEANDTHEFIREWILLNOTPROPAGATEOUTSIDEOFTHEARFA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIANCEh1ETHODSSTILLAPPLY.IIExlsTIt<GAUT0MATlcc02sUPPREssloNsYsTEMwILLEXTINGUISHANYPOSTULATEDFIREINTHEAREA/20NEANDTHEFIREWILLNOTPROPAGATEOUTSIDEIOFTHEAREA/ZONETHROUGH.SEISMICGAPS.THEIPREvloussAFEsHUToowNcAPABILITYcoMPLIANcEMETHODSSTILLAPPLY.3839,1812,650I29C02AUTOMATICIONIZATIONANDINFRAREDTYPESEXISTINGAUTOMATICCO2SUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTULATEDFIREItrTHEAREA/IZONEANDTHEFIREWILLNOTPROPAGATEOUTSIDEOFTHEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIANCEMETHODSSTILLAPPLY.+FIREAREASASDEFItrEDINSAFESHUTDOWNCAPABILITYASSESSMENTOFMARCH1983SUBMITTALPAGE1OF TABLE1-2UNIT2FIAEARFAS/ZONESPAOTECTEDBYAUTOMATICC02SUPPRESSIONFIREAREA>>COMBUSTIBLELOADIN(IAREA(BTU/FTi)I(FT2)EQUIVALENTFIRESEVERITY(MIN)SUPPRESSIONDETECTIONCOMMENT2764,2521,056IC02AUTOMATICIGNIZATIONANDINFAAREOTYPESEXISTINGAUTOMATICC02SUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTUI.ATEOFIAEINTHEAREA/20NEAtIDTHEFIAEWILLNOTPAOPAGATEOUTSIDEOFTHEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIAtICEMETHODSSTjLLAPPLY.21,7472'46ICOZAUTOMATICIONIZATIONANDINFRAREOTYPESEXISTINGAUTOMATICCOZSUPPRESSIONSYSTFMWILLEXTINGUISIIANYPOSTULATEDFIREINTHEARFA/20NEANDTtIEFIAEwlLLNOTPROPAGATEOUTSIDEOFTHEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOwNCAPABILITYCOMPLIANCEMETHODSSTILLAPPLY.2477'03000I58C02AUTOMATICIONIZATIONANDINFRAREOTYPESEXISTINGAUTOhIAT)CC02SUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTULATEOFIREINTHEAREA/20NEANDTHEFIAEWILLNOTPROPAGATEOUTSIDEOFTHEAAEA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIANCEMETHODSSTILLAPPLY.2327.630640I21COZAUTOMATICIONIZATIONANDINFRAREDTYPESEXISTINGAUTOh'IATICCOZSUPPRESSIOttSYSTEMWILLEXTINGUISHANYPOSTULATEDFIREINTHEAREA/20NEANDTHEFIREWILLNOTPROPAGATEOUTSIDEOFTtlEAREA/ZONETHROUGHSEISMICGAPS.THEPREVIOUSSAFESHUTDOWNCAPABILITYCOMPLIANCEMETHODSSTILLAPPLY.3926'303,667I21C02AUTOMATICIONIZATIONANDINFRAAEDTYPESEXISTINGAUTOMATICCOZSUPPRESSIONSYSTEMWILLEXTINGUISHANYPOSTULATEDFIREINTHEAREA/IZONEANDTHEFIAEWILLNOTPROPAGATEOUTSIDEOFTHEAREA/20ttETHAOUGHSEISMICGAPS.THEPREVIOUSSAFESHUTOOwNCAPABILITYCOMPLIANCEMETHODSSTILLAPPLY.>>FIREAREASASDEFINEDIttSAFESHUTDOWNCAPABILITYASSESSMENTOFMARCH19B3SUBMITTALPAGE1OF1 TABLE2-1UNIT1FIREAREAS/ZONESOFCONCERNSEISMICGAPEVALUATIONAREAPOSTULATEOFIRELOCATIONADJACENTAREA/ZONEOFCONCERNCOMBUSTIBLELOADINg)AREA(BTU/FT)I(FT2)EQUIVALENTFIRESEVERITY(MIN)SUPPRESSIONDETECTIONSYSTEMEVALUATION33833A10889765'583.200I4939.161l2.650I29INONEAUTOMATICDELUGEFORCHARCOALFILTERAUTOMATICC02NONEAUTOMATICDELUGEFORICHARCOALFILTERNONETHERMISTORFORCHARCOALFILTERUNITIONIZATIONANDINFRAREDTYPESNONEIONIZATIONANOTHERMISTORFORCHARCOALFILTERFIREZONES338,33A.38~108ANO49ARECOMBINEDASONEAREAFORTHISSYSTEMEVALUATION.THESAFESHUTDOWNSYSTEMSAVAILABILITYISPRESENTFDBELOW:MS-INSTRUMENTATIONASSOCIATEDWITHSTEAMGENERATORS1AND4ISAVAILABLEINCONJUNCTIONWITHMANUALOPERATIONOFASSOCIATEOh1RVsOUTSIDEOFTHEEVALUATIONAREA.2.AF-TWOOUTOFTHREETRAINSOFTHEAFSYSTEMSARELOCATEOOUTSIDETHEEVALUATIONAREA;THUSSTEAMGENERATORS1AND4CANBESUPPLIEDWITHAUXILIARYFEEOWATER.3.RCS-TgANDTgNORMALINDICATIONSAREAFFECTED,BUTALTERNATIVEINDICATIONCAPABILITYISBEINGPROVIDEDASPRESENTEDINMARCH1983SUBMITTAL.ATLEASTONETRAINOFOTHERRCSPROCESSMONITORINGSYSTEMCOMPONENTSISLOCATEOOUTSIDEOFTHEEVALUATIONAREA.4.CVCS-THESAFESHUTDOWNCOMPONENTSANDCIRCUITSASSOCIATEOWITHTHISSYSTEMARELOCATEOOUTSIDEOFTHEEVALUATIONAREAR'XCEPTTHECABLEASSOCIATEOWITHQRV-251,WHICHFAILSAT50GPh1MINIMUMFLOWPOSITION.5.THEFOLLOWINGSYSTEMSHAVENOCOMPONENTSIORCIRCUITSINTHEEVALUATIONAREA:oESSENTIALSERVICEWATER(ESW)oCOMPONENTCOOLINGWATER(CCW)oEMERGENCYPOWERSYSTEM(EPS)oRESIDUALHEATREh10VAL(RHR)FIREZONES33~33AAND338ARECONTAINEDINAFIREAREAFORWHICHTHECOMBUSTIBLELOADINGIS11,016BTU/FT,AREAIS2,890FTANDEQUIVALENTFIRESEVERITYIS8MINUTESPAGE1OF4 TABLC.2-1(continued)IFIREILOCATIONOFCONCERNSEISMICGAPEVALUATIONAREAIAOJACENTIPOSTULATEDIAREA/ZONEive48u>TIBLELOADIN(t(BTU/FTc)AREA(FT2)IEQUIVALEttTFIRESEVERITY(MIN)SUPPRESSIOND<TECTIOtqSYSTEMEVALUATION123383851517~812115,03196028,27874139,161I2,6502129NONEAUTOMATICC02AUTOMATICC02INONEIIAUTOMATICC02INONEIIONIZATIONANDINFRAREDTYPESIONIZATIONANDINFRAREDTYPESt<Ot~EIONIZATIONANDINFRAREDTYPESFiREZONECOMBINEDEVALUATIOAVAILABIL1.MS2.AF3.RCS4.CVCS-5.EPS6.RHRS12.7,>>,338AND38AREASONEAREAFORTHISSYSTEMN.THESAFESHUTDOWNSYSTEMSITYISPRESEt<TEDBELOWtATLEASTONETRAINOFSAFESHUT-OOwNCOMPONENTSAttDCIRCUITSASSOCIATEOWITHTtIISSYSTEMARELOCATEOOUTSIDEOFTtREEVALUATIONAREA.ATLEASTONETRAINOFSAFESHUT-DOWNCOMPONENTSANDCIRCUITSOFTHISSYSTEMASSOCIATEOWlTttTttESAMEUNAFFECTEDMSTRAINARELOCATEDOUTSIDEOFTHEFVALUATIONAREA.TtqANOTct<ORMALINDICATIONSAREAFFECTED,BUTAL'IERNATIVEINDI-CATIONCAPABILITYISBEIttGPROVIDEDASPRESEttTEDINMARCH1983SUBMITTAL.ATLEASTONETRAINOFOTHERSAFESHUTDOWNPROCESSMONITORINGSYSTCMCOMPONENTSARELOCATEDOUTSIDEOFTHEEVALUATIONAREA.THESAFESHUTDOWNCOMPONENTSANOCIRCUITSASSOCIATEDWITttTHISSYSTEMARELOCATEDOUTSIDEOFTHEEVALUATIONAREA.EXCEPTQRV-251,WHICHFAILSAT50GPMMINIMUMFLOWPOSITION.ATLEASTONE1RAINOFSAFESHUT-DOwNCOMPONENTSAttDCIRCUITSOFTHISSYSTEMARELOCATEDOUTSIDEOF!THEEVALUATIOrtAREA.TttEELSCLOCATEOINTttEAREA,WttlCHCOULDBEAFFECTED.SUPPLIFSPOWERTOTHEAFFECTEDTRAIttOFSAFEStlUTDOWt1INSTRUMENTATION0)SCUSSEDABOVE.MANUALOPFRATIONOFTttEAFFECTEDVALVES,WHICttHAVECABLESINTHEEVALUATIONAREA,ISAVAILABLE.(THISFIREAREAISCONTlttUEDONTttENEXTPAGE)4FIREZONES33.33AAND338ARECONTAINEDINAFIREAREAANOEQUIVALENTFIRESEVERITYIS8MINUTESFORWHICHTHECOMBUSTIBLELOADINGIS11,016BTU/FT,AREAIS2~890FT2PAGE2OF4 TABLE2-1(co>>tinueu)SEISMICGAPEVALUATIONAREAPOSTULATEDFIRELOCATIONADJACENTAREA/ZONEIOFCONCERNCOMBUSTIBLELOADINgiAREA(BTU/FT)I(FT)EQUIVALEtlTFIRESEVERITY(MIN)SUPPRESSIONDETECTIONSYSTEMEVALUATION12(cont.)7.THEFOLLOWING.SAFESHUTDOWNSYSTEMS'OMPONENTSANDCIRCUITSARELOCATEOOUTSIDEOFTHEEVALUATIONAREA:oESWoCCW496965~6581,3143.20017.914AUTDMATICDELUGEFORCHARCOALIFILTERAUTOMATICIDELUGEFORHVACUNITIONIZATIONANOTHERMISTORIFORCHARCOALIFILTEAIONIZATIONaNOTHERMISTORSIFOAHVACIUNITSFIREZONES49,69AND108ARECOMBINEDASONEAREAf'RTHISSYSTEMEVALUATIONREGARDINGSAFESHUTDOWNCAPABILITYASSESSMENT.FIREZONES49ANO69CONTAINNOSAFESHUTDOWNSYSTEMS'OMPONENTSANDCIRCUITS.THESAFESHUTDOWNCOMPONENTSANDCIRCUITSLOCATEDINTHISEVALUATIONAAEAARETHECOMPONENTSANDCIRCUITSLOCATEOINFIREZONE108FORWHICHCOMPLIANCEMETHODISPRFSENTEDItl1983SUBMITTAL.108897NONEINONE691081,31417,914897I0AUTOMATICDELUGEFORHVACUNITNONEIONIZATIONANDTHEAtlISTOASIFORttVACUNITSINot<EFIREZONES69AND108ARECOMBINEDASONEAREAFORTHISSYSTEMEVALUATIONIREGARDINGSAFESHUTDOWNCAPABILITYIASSESSMENT.FIREZONE69CONTAINSNOSAFESHUTDOWNSYSTEMS.COMPONENTSANDCIACUITS.THESAFESHUTDOWNCOh'IPOtlENTSIANDCIRCUITSLOCATEDINTHISEVALUATIONAREAARETHECOMPONENTSANDCIRCuiTSLOCATEOINFIREZONE108FORWHICHCOM-PLlatlCEMETHODISPRESENTEDIN1983SUBMI'TTAL.PaGE3OF4 TABLE2-1(coiitinueu)SEISMICGAPEVALUATIONAREAPOSTULATEOFIRELOCATIONADJACENTAREA/ZONEIOFCONCERNCOMBUSTIBLELOADIN('tIAREA(BTU/FTc)(FT)EQUIVALENTFIRESEVERITY(MIN)SUPPRESSIONDETECTIONSYSTEMEVALUATION108897I01,31417,91465~65813'00I49NONEAUTOMATICOEI.UGEFORCHARCOALFILTERAUTOMATICDELUGEFORHVACUNITNONEIONIZATIONANDTHERMISTORFORCHARCOALFILTERIOttIZATIOttANDTHERMLSTORSIFORHVACUNITSFIREZONES49,69AND108ARECOMBlttEDASONFAREAFORTHISSYSTEMEVALUATIONIREGARDINGSAFESHUTDOWNCAPABILITYASSESSMENT.FIREZONES49ANO69COttTAIN)tlOSAFESHUTDOWNSYSTEMS,COMPONEttTSANDCIRCUITS.THESAFESHUTDOWNCOMPONEttTSIANOCIRCUITSLOCATEDINTHISEVALUATIONIAREAARETHECOMPONENTSANDCIRCUITSLOCATEDINFIREZOttE108FORWHICHCOMPLIANCEMET1100ISPRESENTEDIN1983SUBMITTAL.PAGE4OF4 TABLE2-2UNIT2FIAEAREAS/ZONESOFCONCERt(SEISMICGAPEVALUATIONAREAIPOSTULATEOIFIREILOCATIONADJACENTZONEI.OFCONCERNCOMBUSTIBl.ELOAOItt(tIAREA(BTU/FTz)I(FT)FIAESEVERITY(MIN)IEQUIVALENTSUPPAESSIONDETECTIOttSYSTEMEVALUATION34834A3910950NONEIAUTOMATICDELUGEFORCHARCOALFILTERIN34ANONETHERMISTORFORCHARCOALFILTERUNITItd34A28.630I2,667I21IAUTOMATICCOZIONIZATIONIANDINFRAREDTYPES8970INONEINONE48,878I3,200I37AUTOMATICDELUGEFORCHARCOALFILTERIONIZATIOttIANDTHEAMISTOAIFORCHARCOALIFILTER4I(THISFIREARESCOUEOONTHENEXTPAGE)AINTIN1.MS2.AF3.ACS4.CVCS-5.EPSINSTRUMENTATIONASSOCIATEDWITHSTEAMGENERATORS1AND4ISAVAILABLEINCONJUNCTIONWITHhtANUALOPERATIONOFASSOCIATEDMAVs.hlANUALOPERATIONOFAFFECTEDFhl0212AND242IttCONJUNCTIONWITHEREMOTEOPERATIOttOFOT<<EAREQUIREDISAFESHUTDOWNCOMPONENTSOFTHISSYSTEMOUTSIDEOFTHEEVALUATIONAREAWILLUTILIZEAFSYSTEMTOSUPPLYAUXILIARYFEEDWATERTOSTEAMGENERATORS1AND4.TtqANDTgNORMALINDICATIONSAREAFFECTED,BUTALTERNATIVEINDI-CATIONCAPABILITYISBEINGPROVIDEDASPRESENTEDINhlARCH1983SUBhtlTTAL.ATLEASTONETRAINOFOTHERRCSSAFESHUTDOWNPROCESSMONITORINGSYSTEMCOMPONENTSISLOCATEOOUTSIDEOFTHEEVALUATIONAREA.THESAFESHUTDOWNCOMPONENTSASSOCIATEDWITHTHISSYSTEMaRELOCATEDOUTSIDEOFTHEEVALUATIONAREAR'XCEPTTHECABLEASSOCIATEDYtITHQRV-251.WHICHFAILSAT50GPMMINIMUMFLOWPOSITION.SAFESHUTDOWNCOMPONENTSANDCIRCUITSOFONETRAINOFEPSWHICHINCLUDESOGABARELOCATEDOUTSIDEOFTHEEVALUATIONAREA.FIREZONES34B,34A,39.109ANO50AREICOMBINEDASONEAREAFORTHISSYSTEMEVALUATION.THESAFESHUTDOWNSYSTEMSAVAILABILITYISPRESENTEDBELOW:4FIREZONES34,34AAND348ARECONTAINEDINAFIREAAEAFORWHICHTltECOMBUSTIBLELOADINGANDEQUIVALENTFIRESEVERITYIS4MINUTESPAGE1OF5IS5.809BTU/FT,AREAIS2.890FT2 TABLE2-2(contlnueu)SFISMICGAPEVALUATIONAREAPOSTULATEDFIRELOCATION348(cant.)ADJACENTZONEIOFCONCERNCOMBUSTIBLELOADIN(t(BTU/FTc)AREAI(FT2)IEQUIVALENTIFIREISEYERITYI(MIN)IIISUPPRESSIONDETECTION6.CCW7.RHRI8.ESWSYSTEMFVALUATIONICIACUITSANDCOMPONENTSASSOCIATEDWITHTHISSYSTEMREQUIREDFORHOTISHUTDOWNARELOCATEDOUTSIDEOFITHEEVALUATIONAAEA.MANUALIOPERATIONOFTHEAFFECTEDVALVESIAEQUIRFDFORCOLOSHUTDOWNISIAVAILABLE.IhlANUAlOPERATIONOFTHEAFFECTEDVALVES,WHICHHAVECABLESINTHEEVALUATIONAREA,ISAVAILABLE.NOTAFFECTED,EVALUATIONAREADOESt<OTCONTAINCOMPOHFNTSORCIRCUITSASSOCIATEDWITHTHISSYSTEMREQUIREDFORSAFESHUTDOwti.III225918,460HONEIHONFFIREZONES22.27,23.348AND39ARECOhlBINEOASONEAREAFORTHISSYSTEhl27233483984,252I1.056IIAUTOhIATICC02IONIZATIONIANDINFRAREDTYPES27,830840I21AUTOMATICC02IONIZATIONANDINFRAREDTYPESIHONENONE28.6302.66721AUTOMATICC02IONIZATIONANDINFAAREDTYPESI(THISFIREAREAISCOttTINUEDOttTHEt<EXTPAGE)1.MS2.AF3.RCSINSTRUMENTATIONASSOCIATEDWITHSTEAMGENERATORS1AND4ISAVAILABLEINCONJUtlCTIONWlTHhlANUALOPERATIONOFASSOCIATEDMAVsOUTSIDEOF1HEEVALUATIONAREA.htAHUALOPEAATIONOFAFFECTEDFM0212AND242ANDFAV247INCONJUNCTIONWITHREMOTEOPEAATIOttOFOTHERCOhtPOttENTSOFTHISSYSTEMRFQUIREDFORSAFESttUTDOWtdOUTSIDEOFTHEEVAI.UATIOHAREAWILLUTILIZEAFSYSTEMTOSUPPLYAUXILIARYFEEOWATERTOSTEAMGENERATORS1AND4.TnAHDTctlORMALIttDICATIONSAAFAFFECTED.BUTALTERHATIVEINDICA-TIONONCAPABILITYISBEINGPROVIDEDASPRESENTEDINMARCH1983SUBhllTTAL.ASLEASTONETRAINOFOTHERRCSSAFESHUTDOWNPROCESSMONITORINGSYSTEtlCOMPONENTSISLOCATEDOUTSIDEOFTHEEVALUATIONAAEA.EVALUATION.THESAFESHUTDOWNSYSTEMSIAVAILABILITYISPRESENTEDBELOW:FIREZONES34,34AANO348AAECONTAINEDINAFIAEAAEAFORWHICHTHECOMBUSTIBLELOADIHGANDEQUIVALENTFIRESEVERITYIS4MINUTESPAGE2OF5IS5,809OTU/FT,AREAIS2~890FT2 TABLE2-2(continueu)SEISMICGAPEVALUATIONAREAPOSTULATEDFIRELOCATIONIAOJACENTZONEOFCONCERN~COMBUSTIBLELOADIN@(BTU/FTz)AREA(FT)EQUIVALENTFIRESEVERITY(MIN)SUPPRESSIONDETECTIONSYSTEMEVALUATION22(cont.)CVCS-5.EPS6.CCW7.RHR8.ESWTHESAFFSHUTDOWNCOMPONENTSASSOCIATEDWITHTHISSYSTEMARELOCATEDOUTSIDEOFTHEEVALUATIONAREA.EXCFPTCABLEASSOCIATEOWITHQRV-251.WHICHFAILSAT50GPMhlINIMUMFLOWPOSITION.SAFESHUTDOWNCOMPONENTSANDCIRCUITSOFONETRAINOFEPSWHICHINCLUDESDGABARELOCATEDOUTSIDEOFTHEEVALUATIONARFA.CIRCUITSANDCOMPONENTSASSOCIATEDWITHTHISSYSTEMREQUIREDFORtlOTSHUTDOWNARELOCATEOOUTSIDEOFTHEEVALUATIONAREA.MANUALOPERATIONOFTHEAFFECTEDVALVESREQUIREDFORCOLDSHUTDOWtlISAVAILABLE.hlANUALOPERATIONOFTHEAFFECTEDVALVES,WHICHHAVECABLESINTHEEVALUATIONAREA,ISAVAILABLE.NOTAFFECTED,EVALUATIONAftEADOESNOTCOtITAINCOMPONEttTSORCIRCUITSASSOCIATEDWITHTHISSYSTEMREQUIREDFORSAFESHUTDOWN.506910949,8983'003/IAUTOMATICIDELUGEFORICHARCOALIFILTERIONIZATIONANDTHERMISTORFORCHARCOALIFILTER1,31417.914IAUTOhlATICDELUGEFORHVACUNITIONIZATIONIAND1'HERMISTORSIFORHVACIUNITS897I0II(TNONENONEHISFIREAREAISCONTINUEDONTHENEXTPAGE)1.tJIS2.AFINSTRUhlENTATIONASSOCIATEDWITHSTEAMGENERATORS1AND4ISAVAILABLEINCONJUNCTIONWITHMANUALOPERATIONOFASSOCIATEDMRVsOUTSIDEOFTHEEVALUATIONAREA.ONETRAINOFTHISSYSTEMIt1CLUDINGPUMPPP-3W(ANDASSOCIATEDCABLES)IANDFM0212AND242ANDASSOCIATEOICABLESARELOCATEOOUTSIDEOFTHEEVALUATIONAREA.FIREZONES50,69AND109ARECOhlUINEDASONEAREAFORTHISSYSTEMEVALUATION.THESAFESHUTDOWNSYSTEMSAVAILABILITYISPRESENTEDBELOW:PAGE3OF5 TABLE2-2(cont1nueu)SEISMICGAPEVALUATIONAREAPOSTULATEDFIRELOCATIONADJACENTZONEOFCOHCERNCOMBUSTIBLELOAOINQlAREA(BTU/FTi)(FT2)EQUIVALENTFIRESEVERITY(tahiti)SUPPRESSIOHDETECTIONSYSTEh1EVALUATION50(cont.)3.CVCS"COMPONENTSANDCIRCUITSASSOCIATED)WITHTHISSYSTEMARELOCATEOOUTSIDEOFTHEEVALUATIONAREA,EXCEPTONEOFTHECHARGINGPUMPSSUCTIONVALVECABLE(REDUNDANTVALVEISAVAILABLE).4.CCW-CIRCUITSANDCOMPONENTSASSOCIATEDWITHTHISSYSTEMREQUIREDFORHOTSHUTDOWNARELOCATEOOUTSIDEOFTHEEVALUATIONAREA.MANUALOPERATIONOF1'tlEAFFECTEDVALVESREQUIREDFORCOLDSHUTDOWNISAVAILABLE.I5.RHR-MANUALOPERATIONOFTHEAFFECTEDVALVES.WHICHHAVECABLESINTHE.EVALUATIONAREA,ISAVAILABLE.6.THEFOLLOWINGSAFESHUTDOWNSYSTEMSCOMPONENTSANDCIRCUITSARELOCATEOOUTSIDEOFTHEEVALUATIONAREA:oRCSoEPSoESW691091,31417,914I897IAUTOMATICDELUGEFORHVACUNIT0INONEIONIZATIONANDTHERMISTORSFORHVACUNITSNONEFIREZONES69AttD100ARECOMBINEDASONEAREAFORTtlISSYSTEMEVALUATIONREGARDINGSAFESHUTOOWHCAPABILITYASSESSMENT.FIREZONE69CONTAIttStt0SAFESHUTDOWNSYSTEMS.COMPONENTSANDCIRCUITS.THESAFESHUTDOWNCOMPONEttTSANDCIRCUITSLOCATEDINTHISEVALUATIONIAREAARETHECOMPONENTSANDCIRCUITSLOCATEDINFIREZONE108FORWHICttCOM-PLIAt<CEMETHODISPRESENTEDIN1983SUBh11TTAL.PAGE4OF5 TABLE2-2(continued)SEISMICGAPEVALUATIONAREAPOSTULATEOFIRELOCATIONADJACENTZONEOFCONCERNCOMBUSTIBLELOADIN(t(BTU/FTc)AREA(FT2)lEQUIVALENTFIRESEVERITY(MIN)-SUPPRESSIONDETECTIOttSYSTEMFVALUATION109691,31450I49.6968973,200I17,914'7INONEAUTOMATICIDELUGEFORCHARCOALFILTERAUTOMATICDELUGEFORHVACUNITINONE10ttIZATIONIANDTHERMISTORFORCHARCOALFILTERIONIZATIONANDTHERMISTORSFORHVaCUNITSFIRE20tlES50,69AND109ARECOMBINEDASONEAREAFOR1HISSYSTEt1EvaLUATION.THESAFESHUTDOWNSYSTEMSAVAILABILITYISPRESENTFDBELOW:1.MS-INSTRUMENTATIONASSOCIATEDWITHSTEAMGENERATORS1ANO4ISAVAILABLEINCONJUNCTIONWITHMANUALOPERATIONOFASSOCIATEDMRVsOUTSIDEOFTHEEVALUATIONAREa.2.AF-ONETRAINOFTHISSYSTEMINCLUDINGIPUhtPPP-3W(ANDASSOCIATEOCABLES)(ANDFt40212ANO242ANDASSOCIATEDCABLESARELOCATEDOUTSIDEOFTtifEVALUATIONAREA.3.CVCS-COMPONENTSANOCIRCUITSASSOCIATEDWITHTHISSYSTEMARELOCATEDOUTSIDEOFTHEEVALUATIONAREA,EXCEPTONEOFTHECHARGINGPUMPSSUCTIOttVALVECABLE(REDUNDANTVALVEISAVAILABLE)~4.CCW-CIRCUITSANDCOMPONENTSASSOCIATEDWITHTttISSYSTEMREQUIREDFORHOTSHUTOOwNARELOCATEOOUTSIDEOFTHFEVat.UATIONAREA.MANUaLOPERATIONOFTHEAFFECTEDVALVESREQUIREDFORCOLDSHUTDOWNISAVAILABLF.5.RtlR-MANUALOPERATIONOFTHEAFFECTEDVALVES.WHICHHAVECABLESINTHEEvALUaTIONAREA.ISAvaILABLE.6.THEFOLLOWINGSAFESHU100WNSYSTEMSCOMPONENTSANDCIRCUITSARELOCATEDOUTSIDEOFTHEFVALUATIONAREA:oRCSoEPSoESWPaGE5OF5

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