ML17334B067

Replacement Pages to Final Draft of Rev 1 to Safe Shutdown Capability Assessment,Proposed Mods & Evaluations.

ML17334B067
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Site:	Cook
Issue date:	03/20/1987
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
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ML17334B066	List: ML17334B065 ML17334B067
References
AEP:NRC:0692AZ, AEP:NRC:692AZ, NUDOCS 8703300166
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Attachment2toAEP:NR.o92AZSection1Subsections1.2and1.3,pages1-2through1-10ThesesubsectionsprovideadditionalbackgroundinformationonthedevelopmentoftheSSCAReportsincetheoriginalMarch1983submittal.Includedareothereditorialchanges,clarifications,andgeneralupdateoftheoriginalsubmittal.Inaddition,thesepageswerechangedinordertoreflectadditionalinformationaddedtothereportbecauseoftheadditionsofChapter9,modificationstoTablel-l,additionofthesupplementalinformationofAugust1983,andingeneralmoredetailedinformationonthemethodusedtocompilethebook.page1-14TheCondensateStorageTank(CST)wasaddedtothislist.Table1-1Table1-1hasanewformat.Thetablealsoreflectschangestothepreviousfireareadesignations.PlantlocationsthatwerenotpreviouslyidentifiedintheMarch1983SSCAReportarenowidentifiedandgivenfirezonenumbers(6A,and126through146).Thesenewfirezoneshavebeencombinedwithadjacentexistingfireareas.Additionally,insomecases,whatwereonceseparatefireareashavenowbeencombinedtoformonelargerfirearea.Asaresult,thenumberoffireareashasdecreasedfrom80to57,andthenumberofindividualfire'zoneshasincreased.ThecombiningofthesefirezonesandfireareashadnoimpactoncompliancewithAppendixRasdemonstratedinSections7and9firehazardsanalysesandsafeshutdownsystemevaluations.Section2Subsections2.2and2.3,pages2-3through2-11ThesesubsectionsprovidebackgroundinformationonthedevelopmentoffirezonesandfireareasastheyarenowidentifiedinRevision1oftheSSCA.Subsection2.4,page2-12Subsection2.4providesbackgroundinformationonthedevelopmentofthelatestcombustibleloadingsnowidentifiedinRevision1oftheSSCA.87O3300i66BiO32OPDR.ADOCH05000355VDa II I'Attachment2toAEP:NR92AZtNPage2Subsection2.5,pages2-13through2-17andFigures2.0-aand2.0-bSubsection2.5andFigures2.0-aand2.0-barenew.TheyaddtheinformationpreviouslysubmittedintheSupplementalInformationReporttoRevision0oftheSSCA,Section2,datedAugust1983.Section2providedsupplementalinformationtosupportthe"contentionthatcablesinconduitembeddedinconcretearenotpartofthefireareas.Subsection2.6,page2-17andTable2-3Subsection2.6andTable2-3arenew.Theyexplainandidentifythemaximumallowablecombustibleloadingvalues(anupperbound)uponwhichtheexemptionrequests(Section7)andengineeringevaluations(Secti.on9)foranareaarenowtobebased.Table2-3onlyincludesthosefireareasinvolvedinanexemptionorevaluation.Thisupperboundwasintendedtoaccountforsmallincreasesinthecombustibleloadingsovertimeandnotvoidthebasesandconclusionsoftheoriginalengineeringevaluationorexemptionrequestanditsacceptance.Table2-1Identifies.allnewareasoftheplantthatwerepreviouslynotidentifiedasfirezonesinthe1983AppendixRsubmittal.Thenewfirezonenumbersare6Aand129through146.Enhancementsinthenamingoftheotherpreviouslyidentifiedfirezonesarealsonoted(e.g.,additionofelevations,unitdesignations).Table2-2Table2-2hasanewformat.Newcolumnsprovidingactualfireload,floorarea,andfigurenumberreferencearegiven.Theactualfireloadandequivalentfireseverityreflectourlatestfireloadingsurveys.Thesevalueshaveforthemostpartbeenrevisedupward.NewfootnotesareprovidedincludingreferencestotheexemptionrequestsofSection7andboundaryevaluationofSection9.Thetablealsoreflectschangestothepreviousfireareadesignations(i.e.,theadditionofnewfirezonesandtheirinclusionintoexistingfireareas,andthecombiningofpreviousRevision0fireareasintoonelargerfirearea).Figures2.1through2.11Thefirezoneandfireareaboundarydrawings,Figure2.1through2.11,havebeenrevisedtoreflectthechangesinthefirezonesandfireareas.Thesechangesincludetheadditionofnewfirezonesandtheirinclusionintoexistingfireareas,andthecombiningofpreviousRevision0fireareasintoonelargerfirearea.

IIAttachment2toAEP:NR692AZSection3pages3-1through3-12Revisiontothedescriptionsofthefiredetectionandsuppressionsystemsreflecteditorialchanges,clarifications,andgeneralupdateoftheoriginalMarch1983SSCAsubmittal.Figures3-1through3-6Figures3-1through3-6arenew.Thesedrawingsshow,inageneralizedfashion,thevarioustypesoffiredetectionandsuppressionsystemsidentifiedinTable2-2andtheirareaofcoverage.Section4page4-12Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableforoperatorflexibility).page4-14Thesechangesareduetotheaddingoffigure,table,andothersectionreferencestothebooktobetterlinkthetextandrespectivetables/figures.page4-21Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableforoperatorflexibility).page4-27Thefirstrevisionbaronthepagesuppliesaspecificnumberofgallonsofwateravailableinthecondensatestoragetankratherthanthequalitativeamountofhoursofwateravailable.page4-42Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableforoperatorflexibility).pages4-49through4-56ThissectionincorporatesinformationprovidedintheprevioussupplementalsubmittaldatedAugust1983.Inaddition,thistextprovidesmoredetailedinformationgivenonthecriteriausedincompilingtheinformationintheSSCAandalsosomeclarificationsonthisinformation.

Attachment2toAEP:NRC.692AZTable4-1ChemicalandVolumeControlSystemAddedsystemboundaryvalves.ReactorCoolantSystemDeletedoptionalpressurizerbackupheaters.AddedexpandedLSIstationnumbers.MainSteamSystemAddedSteamGenerator(MainSteam).StopValvesAuxiliarysupport'quipment.AuxiliaryFeedwaterSystemAddedlocationofCondensateStorageTankandCross-tievalves.Addedsystemboundaryvalves.ComponentCoolingWaterSystemAddedsystemboundaryvalves.ResidualHeatRemovalSystemAddedsystemboundaryvalves.Table4-2AddedsameinformationforUnit2asreportedforUnit1.Inaddition,AccumulatorDischargeValves,whichhadbeenpreviouslyomitted,wereaddedtotheResidualHeatRemovalSystemOriginalTables4-4,4-5ThesetableswereremovedandreplacedbytheSafeShutdownSystemAnalysisdatabooks.Thesetableswereoriginallyputinthebookasanexampleoftheformattedinformationavailableonazone-by-zonebasis.Figure4.34Thesechangesareduetotheaddingoffigure,table,andothersectionreferencestothebooktobetterlinkthetextandrespectivetables/figures.Section5page5-11Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableforoperatorflexibility).Inaddition,thistextprovidesmoredetailedinformationgivenonthecriteriausedincompilingtheinformationintheSSCAandalsosomeclarificationson'thisinformation.

Attachment2toAEP:NR.92AZpage5-13ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.page5-15ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection5.3.5,page5-18IncorporatedadditionalfirezoneintoMethodAS-5~Subsection5.4,page5-24StatementreElectstheactualsafety-relatedsystemsmodifi.edbytheSSCAratherthanthoseinitiallyproposedbyMarch1983report.page5-30ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.page5-31Thesechangesareduetotheaddingoffigure,table,andothersectionreferencestothebooktobetterlinkthetextandrespectivetables/figures.ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.page5-32Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableEoroperatorflexibility).page5-33ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsuEficientroomonLSIpanels1and2fortheadditionalinstrumentation.

'IAttachment2toAEP:NR692AZSubsection5.6.5pages5-35and5-36IncorporatedinformationpreviouslyprovidedinsupplementalsubmittaldatedAugust1983.TablesIncorporatedexpandedLSIstationsnumbering.Table5-1ThistextreflectsthechangetotheSSCAduetotheadditionofnewfirezones.Table5-2ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.Inaddition,thistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Table5-6DeletedoriginalTable5.6andincorporatedthisinformationintoTable5.7.Table5-7ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.Table5-8AddedadditionalfirezonestoCCWPumpCableTable.Duetothechangingofthelastcolumntitle,additionalfirezoneswereaddedtothiscolumntocomplete'heinformation.Table5-9AddedadditionalfirezonestoESWSystemCables.IThefootnotesatthebottomofthistablewereaddedwhendesignverificationdiscoveredadiscrepancyinthecablenumbers.Section6GeneralComment:Thesechangesweremadebecauseofthefurtherexplanationsgiveninthetextsconcerningthecomponents/systemstakenasoptional(notrequiredforSafeShutdownbutavailableforoperatorflexibility).

IAttachment2toAEP:NR692AZtSubsection6.2.2page6-6Expandedthedescriptionoftherepairmethodologyforthepressurizerheaters.Section7Subsection7.1,pages7-1through7-6Subsection7.1providesbackgroundinformationonthedevelopmentoftheexemptionrequestsastheynowappearinRevision1oftheSSCA.Subsections7.2through7.14Thecombustibleloadingvaluesforthefireareasinwhichanexemptionrequesthasbeenwrittenhavebeenrevisedupwardbasedonourlatestfireloadingsurveys,Thecombustibleloadingvaluesaregiveninthefollowingmanner.First,acombustibleloadingvalueuponwhichtheexemptionshouldnowbebasedisgiven.Thisisfollowedbytheactualcombustibleloadingwhichisenclosedwithinparentheses.Theactualcombustibleloadingisbasedonourlatestfireloadingsurvey,isthesameasgiveninTable2-2,andisdetailedintheSummaryEvaluationTablefollowingeachexemption.ThecombustibleloadingvalueuponwhichtheexemptionshouldnowbereviewedisbasedontheactualloadingplusamarginandisthesameasgiveninTable2-3.Theadditionofthismarginwasdoneinordertopreventsmallincreasesincombustiblematerialsovertimefromvoidingthebasesandconclusionsoftheevaluations.Whenappropriate,theexemptionrequestsmakereferencetothenewengineeringevaluations(Chapter9)thathavebeenperformedsincetheoriginalMarch1983SSCAsubmittal.Refer'enceisalsomade,whenappropriate,tothetwonewexemptionrequests(7.13and7.14)whichweresubmittedandacceptedaftertheoriginalMarch,1983SSCAsubmittal.Numerouschangesreflecteditorialchanges,clarifications,andgeneralupdate-oftheoriginalMarch1983SSCAsubmittal.Subsection7.2,pages7-7through7-18ThefireareainwhichtheexemptionrequestwasoriginallywrittenhasbeenincreasedtoincludeFireZones136,137,138A,138B,and138'hesenewfirezonesareareasoftheplantthatwerepreviouslynotidentifiedasfirezonesinthe1983AppendixRsubmittal.Asdemonstratedbythisexemptionrequest,theadditionofthesefirezoneshashadnoeffecton,theexemptionrequest.Subsection7.7,pages7-43through7-51andFigures7.7.2and7.7.3ThehatchbetweenFireZones29Cand29Gwillnotbeupgradedtoathree-hourrating.Boundaryevaluation9.25wasperformedjustifyingtheexistenceoftheunratedhatch.

lAttachment2toAEP:NR.692AZSubsection7.7hasbeenrevisedtoreflect,whereappropriate,theadditionoftheinformationpreviouslysubmittedintheSupplementalInformationReporttoRevision0oftheSSCA,Section6,datedAugust1983.Section6providedsupplementalinformationtosupportExemptionRequest7.7forFireZone29G.Figures7.7.2and7.7.3werepartoftheSupplementalInformationReportandarenewtotheSSCA.Subsection7.7.5.3,page7-48Thecablenumberslistedreflectdesignverificationonthecablenumbersandthenumberofcablesrequired.Subsection7.8,pages7-52through7-63ThefireareainwhichtheexemptionrequestwasoriginallywrittenhasbeenincreasedtoincludeFireZone105.Thisnewfirezoneisanareaoftheplantthatwaspreviouslynotidentifiedasafirezoneint'e1983AppendixRsubmittal.Boundaryevaluation9.29hasbeenperformedjustifyingthecombiningofthetwofireareas.Subsection7.8.3,page7-53andSummaryEvaluationTable7.8-1,ItemD2,page7-57Theautomaticcharcoalfiltersuppressionsystemhasbeenconvertedtoamanualsysteminaccordancewithourpreviouscorrespondence.RefertoletternumberAEP:NRC:0960,datedMarch14,1986.Subsection7.9.4,page7-53tTheconstructionofthefirezoneshasbeenclarifiedtoidentifyadditionalportionsofthefirebarriersthatdonothaveaminimumfireratingofonehourandthatallconstructionisnotofreinforcedconcrete.Boundaryevaluations9.23,9.29,9.35,and9.38havebeenperformedandanewExemptionRequest7.14wasgrantedjustifyingtheseunratedfireareaboundaries.Subsection7.9.3,page7-59andSummaryEvaluationTable7.9-1,ItemD.2,page7-63Theautomaticcharcoalfiltersuppressionsystemhasbeenconvertedtoamanualsysteminaccordancewithourpreviouscorrespondence.RefertoletterAEP:NRC:0960,datedMarch14,1986.Subsection7.9.4,page7-59Theconstructionofthefirezoneshasbeenclarifiedtoidentifyadditionalportionsofthefirebarriersthatdonothaveaminimumfireratingofonehour.Boundaryevaluation9.36hasbeenperformedandanewExemptionRequest7.14wasgrantedjustifyingtheseunratedfireareaboundaries.p~

tlIAttachment2toAEP:NR.692AZSubsection7.10andFigures7.10.1and7'0.4through7.10.9Subsection7.10andFigure7.10.1havebeenrevisedtoreflect,whereappropriate,theadditionoftheinformationpreviouslysubmittedintheSupplementalInformationReporttoRevision0oftheSSCA,Section7,datedAugust1983.Section7providedsupplementalinformationtosupportExemptionRequest7'0,FireZone44S.Figures7.10.4through7.10.9werepartoftheSupplementalInformationReportandarenewtotheSSCA.Subsection7'0.1,page7-65Thehoodsovertheindividualcomponentcoolingpumpsareventilationsupplyductsratherthanventilationexhaustducts.Boundaryevaluation9.3hasbeenperformedanalyzingthissituation.Subsection7.11,pages7-75through7-81ThefloorandceilinghatchesbetweenthecontrolroomandthecablevaultbelowandtheHVACequipmentroomabovewillnotbeupgradedtoathree-hourrating.Boundaryevaluations9.5and9.13havebeenperformedjustifyingtheexistenceoftheunratedhatches.'USubsection7.12,pages7-82through7-88ThefloorandceilinghatchesbetweenthecontrolroomandthecablevaultbelowandtheHVACequipmentroomabovewillnotbeupgradedtoathree-hourrating.Boundaryevaluations9.5and9.17havebeenperformedjustifyingtheexistenceoftheunratedhatches.OriginalSubsections7.13through7.20ofSSCA,Revision0TheoriginalExemptionRequests7.13through7.20ofRevision0totheSSCAhavebeenwithdrawnasexplainedonpage7-3andintheSupplementalInformationReporttoRevision0oftheSSCA,Section8,datedAugust,1983.Subsection7.13ThisisanewExemptionRequestasexplainedonpage7-2.ThisexemptionrequestwasoriginallysubmittedinSupplementTwo,"AppendixREvaluationofAuxiliaryBuildingHVACDuctPenetrationandContainmentSeismicGaps,"datedAugust1984.Subsection7.14ThisisanewExemptionRequestasexplainedonpage7-2.ThisexemptionrequestwasoriginallysubmittedinSupplementTwo,"AppendixREvaluationofAuxiliaryBuildingHVACDuctPenetrationandContainmentSeismicGaps,"datedAugust1984.

5IAttachment2toAEP:NR.692AZSection8Generalcomment:Thesechangesareduetotheaddingoffigure,table,andothersectionreferencestothebooktobetterlinkthetextandrespectivetables/figures.pages8-1through8-36Section8hasbeenrevisedtoreflecteditorialchanges,clarifications,andgeneralupdateoftheoriginalMarch1983SSCAsubmittalforthemodificationsperformed.Includedintherevisionisadditionalbackgroundinformationontheproposedmodifications(e.g.,thereasonswhyaparticularmodificationwasbeingperformed)asnowidentifiedinRevision1oftheSSCA.Whenappropriate,referencesaremadetothenewengineeringevaluationsinSection9thathavebeenperformedsincetheoriginalMarch1983'SCAsubmittal.Referenceisalsomade,whenappropriate,totheexemptionrequestsinSection7.Inaddition,pages8-1,8-4,8-27,8-28,and8-33through8-36providemoredetailedinformationgivenonthecriteriausedincompilingtheinformationintheSSCAandalsosomeclarificationsonthisinformation.Subsection8.1,page8-4ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection8.6A,pages8-7,8-12A,8-13ThesechangesreflecttheadditionofTrays/Conduitsprotectedasaresultoffurtherdesignverification.Subsection8.20.3,page8-27ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection8.21.3,page8-28ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.page8-18ThesechangesreflecttheadditionofTrays/Conduitsprotectedasaresultoffurtherdesignverification.

'4LAttachment2toAEP:NRC.692AZPage11page8-31Thesechangesreflecttheaddi,tionofTrays/Conduitsprotectedasaresultoffurtherdesignverification.pages8-33through8-36Thistextwaschangedtoreflectthe'additionofLSIpanelsLSI-5and"LSI-6directlynexttoLSI-1andLSI-2respectively.ThesetwonewpanelswereaddedbecausetherewasnotsufficientroomonLSIpanels1and2fortheadditionalinstrumentation.Section9Subsections9.1through9e41Section9isanentirelynewsection.ItprovidesacompilationoffireareaboundaryevaluationswhichhavebeenperformedsincetheissuanceoftheMarch1983SSCAReport;Theseengineeringevaluationswereperformedtojustifyunratedcomponentsoffireareaboundaries,orwhencombiningvariousfireareasorzones.Eachevaluationwasanalyzedforitsimpactontheotherevaluations,andexemptionrequestscontainedinthereport.e iP~40'\

40DocketFile18AfARtg87DOCKETNO(S).:50-315/314ge.JohnDominiVicePresidentIndianaandMichiganElectricCompanyc/oAmericanElectricPowerServiceCorporation1RiversidePlazaColumbusiOhio43216

SUBJECT:

D,CCookNuclearPlantpUnits1and2NRCPDRLocalPDRPRCSystemPWRg4RdgNDuncanDWiggintonOGC-BethesdaACRS(10)JPartlowBGrimesEJordanNThompsonThefollowingdocumentsconcerningourreviewofthesubjectfacilityaretransmittedforyourinformation.NoticeofReceiptofApplication,datedDraft/FinalEnvironmentalStatement,datedNoticeofAvailabilityofDraft/FinalEnvironmentalStatement,datedSafety,EvaluationReport,orSupplementNo.datedEnvironmentalAssessmentandFindingofNoSignificantImpact,datedNoticeofConsiderationofIssuanceofFacilityOperatingLicenseorAmendmenttoFacilityOperatingLicense,datedQBi-WeeklyNotice;ApplicationsandAmendmentstoOperatingLicensesInvolvingNoSignificantHazardsConsideratioris,dated03/12/87[seepage(s)37685/7707Exemption,datedConstructionPermitNo.CPPR-,AmendmentNo.datedFacilityOperatingLicenseNo.,AmendmentNo.datedOrderExtendingConstructionCompletionDate,datedMonthlyOperatingReportfortransmittedbyletterdatedQAnnual/Semi-AnnualReport-transmittedbyletter'dated

Enclosures:

AsstatedOfficeofNuclearReactorRegulationcc:SeeaextpageOFFICE/SURNAME/"DATE/WRN4/PWR-c/macO3ifgIs7'~~~~~~~~~~~nt/7/DWg03/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'I~~~~~~~~~~~~~~~~~INRCFORM318IIO/80INRCM02400FICIALRECORDCOPY

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