ML17334B067

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

ML17334B067
Person / Time
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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Attachment 2toAEP:NR.o92AZSection1Subsections 1.2and1.3,pages1-2through1-10Thesesubsections provideadditional background information onthedevelopment oftheSSCAReportsincetheoriginalMarch1983submittal.

Includedareothereditorial changes,clarifications, andgeneralupdateoftheoriginalsubmittal.

Inaddition, thesepageswerechangedinordertoreflectadditional information addedtothereportbecauseoftheadditions ofChapter9,modifications toTablel-l,additionofthesupplemental information ofAugust1983,andingeneralmoredetailedinformation onthemethodusedtocompilethebook.page1-14TheCondensate StorageTank(CST)wasaddedtothislist.Table1-1Table1-1hasanewformat.Thetablealsoreflectschangestothepreviousfireareadesignations.

Plantlocations thatwerenotpreviously identified intheMarch1983SSCAReportarenowidentified andgivenfirezonenumbers(6A,and126through146).Thesenewfirezoneshavebeencombinedwithadjacentexistingfireareas.Additionally, insomecases,whatwereonceseparatefireareashavenowbeencombinedtoformonelargerfirearea.Asaresult,thenumberoffireareashasdecreased from80to57,andthenumberofindividual fire'zoneshasincreased.

Thecombining ofthesefirezonesandfireareashadnoimpactoncompliance withAppendixRasdemonstrated inSections7and9firehazardsanalysesandsafeshutdownsystemevaluations.

Section2Subsections 2.2and2.3,pages2-3through2-11Thesesubsections providebackground information onthedevelopment offirezonesandfireareasastheyarenowidentified inRevision1oftheSSCA.Subsection 2.4,page2-12Subsection 2.4providesbackground information onthedevelopment ofthelatestcombustible loadingsnowidentified inRevision1oftheSSCA.87O3300i66 BiO32OPDR.ADOCH05000355VDa II I'Attachment 2toAEP:NR92AZtNPage2Subsection 2.5,pages2-13through2-17andFigures2.0-aand2.0-bSubsection 2.5andFigures2.0-aand2.0-barenew.Theyaddtheinformation previously submitted intheSupplemental Information ReporttoRevision0oftheSSCA,Section2,datedAugust1983.Section2providedsupplemental information tosupportthe"contention thatcablesinconduitembeddedinconcretearenotpartofthefireareas.Subsection 2.6,page2-17andTable2-3Subsection 2.6andTable2-3arenew.Theyexplainandidentifythemaximumallowable combustible loadingvalues(anupperbound)uponwhichtheexemption requests(Section7)andengineering evaluations (Secti.on 9)foranareaarenowtobebased.Table2-3onlyincludesthosefireareasinvolvedinanexemption orevaluation.

Thisupperboundwasintendedtoaccountforsmallincreases inthecombustible loadingsovertimeandnotvoidthebasesandconclusions oftheoriginalengineering evaluation orexemption requestanditsacceptance.

Table2-1Identifies

.allnewareasoftheplantthatwerepreviously notidentified asfirezonesinthe1983AppendixRsubmittal.

Thenewfirezonenumbersare6Aand129through146.Enhancements inthenamingoftheotherpreviously identified firezonesarealsonoted(e.g.,additionofelevations, unitdesignations).

Table2-2Table2-2hasanewformat.Newcolumnsproviding actualfireload,floorarea,andfigurenumberreference aregiven.Theactualfireloadandequivalent fireseverityreflectourlatestfireloadingsurveys.Thesevalueshaveforthemostpartbeenrevisedupward.Newfootnotes areprovidedincluding references totheexemption requestsofSection7andboundaryevaluation ofSection9.Thetablealsoreflectschangestothepreviousfireareadesignations (i.e.,theadditionofnewfirezonesandtheirinclusion intoexistingfireareas,andthecombining ofpreviousRevision0fireareasintoonelargerfirearea).Figures2.1through2.11Thefirezoneandfireareaboundarydrawings, Figure2.1through2.11,havebeenrevisedtoreflectthechangesinthefirezonesandfireareas.Thesechangesincludetheadditionofnewfirezonesandtheirinclusion intoexistingfireareas,andthecombining ofpreviousRevision0fireareasintoonelargerfirearea.

IIAttachment 2toAEP:NR692AZSection3pages3-1through3-12Revisiontothedescriptions ofthefiredetection andsuppression systemsreflecteditorial changes,clarifications, andgeneralupdateoftheoriginalMarch1983SSCAsubmittal.

Figures3-1through3-6Figures3-1through3-6arenew.Thesedrawingsshow,inageneralized fashion,thevarioustypesoffiredetection andsuppression systemsidentified inTable2-2andtheirareaofcoverage.

Section4page4-12Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable foroperatorflexibility).

page4-14Thesechangesareduetotheaddingoffigure,table,andothersectionreferences tothebooktobetterlinkthetextandrespective tables/figures.

page4-21Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable foroperatorflexibility)

.page4-27Thefirstrevisionbaronthepagesuppliesaspecificnumberofgallonsofwateravailable inthecondensate storagetankratherthanthequalitative amountofhoursofwateravailable.

page4-42Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable foroperatorflexibility).

pages4-49through4-56Thissectionincorporates information providedintheprevioussupplemental submittal datedAugust1983.Inaddition, thistextprovidesmoredetailedinformation givenonthecriteriausedincompiling theinformation intheSSCAandalsosomeclarifications onthisinformation.

Attachment2toAEP:NRC.692AZTable4-1ChemicalandVolumeControlSystemAddedsystemboundaryvalves.ReactorCoolantSystemDeletedoptionalpressurizer backupheaters.AddedexpandedLSIstationnumbers.MainSteamSystemAddedSteamGenerator (MainSteam).StopValvesAuxiliary support'quipment.

Auxiliary Feedwater SystemAddedlocationofCondensate StorageTankandCross-tie valves.Addedsystemboundaryvalves.Component CoolingWaterSystemAddedsystemboundaryvalves.ResidualHeatRemovalSystemAddedsystemboundaryvalves.Table4-2Addedsameinformation forUnit2asreportedforUnit1.Inaddition, Accumulator Discharge Valves,whichhadbeenpreviously omitted,wereaddedtotheResidualHeatRemovalSystemOriginalTables4-4,4-5ThesetableswereremovedandreplacedbytheSafeShutdownSystemAnalysisdatabooks.Thesetableswereoriginally putinthebookasanexampleoftheformatted information available onazone-by-zone basis.Figure4.34Thesechangesareduetotheaddingoffigure,table,andothersectionreferences tothebooktobetterlinkthetextandrespective tables/figures.

Section5page5-11Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable foroperatorflexibility).

Inaddition, thistextprovidesmoredetailedinformation givenonthecriteriausedincompiling theinformation intheSSCAandalsosomeclarifications on'thisinformation.

Attachment 2toAEP:NR.92AZpage5-13ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

page5-15ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection 5.3.5,page5-18Incorporated additional firezoneintoMethodAS-5~Subsection 5.4,page5-24Statement reElectstheactualsafety-related systemsmodifi.ed bytheSSCAratherthanthoseinitially proposedbyMarch1983report.page5-30ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

page5-31Thesechangesareduetotheaddingoffigure,table,andothersectionreferences tothebooktobetterlinkthetextandrespective tables/figures.

ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

page5-32Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable Eoroperatorflexibility).

page5-33ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

ThesetwonewpanelswereaddedbecausetherewasnotsuEficient roomonLSIpanels1and2fortheadditional instrumentation.

'IAttachment 2toAEP:NR692AZSubsection 5.6.5pages5-35and5-36Incorporated information previously providedinsupplemental submittal datedAugust1983.TablesIncorporated expandedLSIstationsnumbering.

Table5-1ThistextreflectsthechangetotheSSCAduetotheadditionofnewfirezones.Table5-2ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

Inaddition, thistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Table5-6DeletedoriginalTable5.6andincorporated thisinformation intoTable5.7.Table5-7ThistextwaschangedtoreflecttheadditionofLSIpanelsLSI-5andLSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

Table5-8Addedadditional firezonestoCCWPumpCableTable.Duetothechangingofthelastcolumntitle,additional firezoneswereaddedtothiscolumntocomplete'he information.

Table5-9Addedadditional firezonestoESWSystemCables.IThefootnotes atthebottomofthistablewereaddedwhendesignverification discovered adiscrepancy inthecablenumbers.Section6GeneralComment:Thesechangesweremadebecauseofthefurtherexplanations giveninthetextsconcerning thecomponents/systems takenasoptional(notrequiredforSafeShutdownbutavailable foroperatorflexibility).

IAttachment 2toAEP:NR692AZtSubsection 6.2.2page6-6Expandedthedescription oftherepairmethodology forthepressurizer heaters.Section7Subsection 7.1,pages7-1through7-6Subsection 7.1providesbackground information onthedevelopment oftheexemption requestsastheynowappearinRevision1oftheSSCA.Subsections 7.2through7.14Thecombustible loadingvaluesforthefireareasinwhichanexemption requesthasbeenwrittenhavebeenrevisedupwardbasedonourlatestfireloadingsurveys,Thecombustible loadingvaluesaregiveninthefollowing manner.First,acombustible loadingvalueuponwhichtheexemption shouldnowbebasedisgiven.Thisisfollowedbytheactualcombustible loadingwhichisenclosedwithinparentheses.

Theactualcombustible loadingisbasedonourlatestfireloadingsurvey,isthesameasgiveninTable2-2,andisdetailedintheSummaryEvaluation Tablefollowing eachexemption.

Thecombustible loadingvalueuponwhichtheexemption shouldnowbereviewedisbasedontheactualloadingplusamarginandisthesameasgiveninTable2-3.Theadditionofthismarginwasdoneinordertopreventsmallincreases incombustible materials overtimefromvoidingthebasesandconclusions oftheevaluations.

Whenappropriate, theexemption requestsmakereference tothenewengineering evaluations (Chapter9)thathavebeenperformed sincetheoriginalMarch1983SSCAsubmittal.

Refer'ence isalsomade,whenappropriate, tothetwonewexemption requests(7.13and7.14)whichweresubmitted andacceptedaftertheoriginalMarch,1983SSCAsubmittal.

Numerouschangesreflecteditorial changes,clarifications, andgeneralupdate-oftheoriginalMarch1983SSCAsubmittal.

Subsection 7.2,pages7-7through7-18Thefireareainwhichtheexemption requestwasoriginally writtenhasbeenincreased toincludeFireZones136,137,138A,138B,and138'hesenewfirezonesareareasoftheplantthatwerepreviously notidentified asfirezonesinthe1983AppendixRsubmittal.

Asdemonstrated bythisexemption request,theadditionofthesefirezoneshashadnoeffecton,theexemption request.Subsection 7.7,pages7-43through7-51andFigures7.7.2and7.7.3ThehatchbetweenFireZones29Cand29Gwillnotbeupgradedtoathree-hour rating.Boundaryevaluation 9.25wasperformed justifying theexistence oftheunratedhatch.

lAttachment 2toAEP:NR.692AZSubsection 7.7hasbeenrevisedtoreflect,whereappropriate, theadditionoftheinformation previously submitted intheSupplemental Information ReporttoRevision0oftheSSCA,Section6,datedAugust1983.Section6providedsupplemental information tosupportExemption Request7.7forFireZone29G.Figures7.7.2and7.7.3werepartoftheSupplemental Information ReportandarenewtotheSSCA.Subsection 7.7.5.3,page7-48Thecablenumberslistedreflectdesignverification onthecablenumbersandthenumberofcablesrequired.

Subsection 7.8,pages7-52through7-63Thefireareainwhichtheexemption requestwasoriginally writtenhasbeenincreased toincludeFireZone105.Thisnewfirezoneisanareaoftheplantthatwaspreviously notidentified asafirezoneint'e1983AppendixRsubmittal.

Boundaryevaluation 9.29hasbeenperformed justifying thecombining ofthetwofireareas.Subsection 7.8.3,page7-53andSummaryEvaluation Table7.8-1,ItemD2,page7-57Theautomatic charcoalfiltersuppression systemhasbeenconverted toamanualsysteminaccordance withourpreviouscorrespondence.

RefertoletternumberAEP:NRC:0960, datedMarch14,1986.Subsection 7.9.4,page7-53tTheconstruction ofthefirezoneshasbeenclarified toidentifyadditional portionsofthefirebarriersthatdonothaveaminimumfireratingofonehourandthatallconstruction isnotofreinforced concrete.

Boundaryevaluations 9.23,9.29,9.35,and9.38havebeenperformed andanewExemption Request7.14wasgrantedjustifying theseunratedfireareaboundaries.

Subsection 7.9.3,page7-59andSummaryEvaluation Table7.9-1,ItemD.2,page7-63Theautomatic charcoalfiltersuppression systemhasbeenconverted toamanualsysteminaccordance withourpreviouscorrespondence.

RefertoletterAEP:NRC:0960, datedMarch14,1986.Subsection 7.9.4,page7-59Theconstruction ofthefirezoneshasbeenclarified toidentifyadditional portionsofthefirebarriersthatdonothaveaminimumfireratingofonehour.Boundaryevaluation 9.36hasbeenperformed andanewExemption Request7.14wasgrantedjustifying theseunratedfireareaboundaries.

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tlIAttachment 2toAEP:NR.692AZSubsection 7.10andFigures7.10.1and7'0.4through7.10.9Subsection 7.10andFigure7.10.1havebeenrevisedtoreflect,whereappropriate, theadditionoftheinformation previously submitted intheSupplemental Information ReporttoRevision0oftheSSCA,Section7,datedAugust1983.Section7providedsupplemental information tosupportExemption Request7'0,FireZone44S.Figures7.10.4through7.10.9werepartoftheSupplemental Information ReportandarenewtotheSSCA.Subsection 7'0.1,page7-65Thehoodsovertheindividual component coolingpumpsareventilation supplyductsratherthanventilation exhaustducts.Boundaryevaluation 9.3hasbeenperformed analyzing thissituation.

Subsection 7.11,pages7-75through7-81ThefloorandceilinghatchesbetweenthecontrolroomandthecablevaultbelowandtheHVACequipment roomabovewillnotbeupgradedtoathree-hour rating.Boundaryevaluations 9.5and9.13havebeenperformed justifying theexistence oftheunratedhatches.'USubsection 7.12,pages7-82through7-88ThefloorandceilinghatchesbetweenthecontrolroomandthecablevaultbelowandtheHVACequipment roomabovewillnotbeupgradedtoathree-hour rating.Boundaryevaluations 9.5and9.17havebeenperformed justifying theexistence oftheunratedhatches.OriginalSubsections 7.13through7.20ofSSCA,Revision0TheoriginalExemption Requests7.13through7.20ofRevision0totheSSCAhavebeenwithdrawn asexplained onpage7-3andintheSupplemental Information ReporttoRevision0oftheSSCA,Section8,datedAugust,1983.Subsection 7.13ThisisanewExemption Requestasexplained onpage7-2.Thisexemption requestwasoriginally submitted inSupplement Two,"Appendix REvaluation ofAuxiliary BuildingHVACDuctPenetration andContainment SeismicGaps,"datedAugust1984.Subsection 7.14ThisisanewExemption Requestasexplained onpage7-2.Thisexemption requestwasoriginally submitted inSupplement Two,"Appendix REvaluation ofAuxiliary BuildingHVACDuctPenetration andContainment SeismicGaps,"datedAugust1984.

5IAttachment 2toAEP:NR.692AZSection8Generalcomment:Thesechangesareduetotheaddingoffigure,table,andothersectionreferences tothebooktobetterlinkthetextandrespective tables/figures.

pages8-1through8-36Section8hasbeenrevisedtoreflecteditorial changes,clarifications, andgeneralupdateoftheoriginalMarch1983SSCAsubmittal forthemodifications performed.

Includedintherevisionisadditional background information ontheproposedmodifications (e.g.,thereasonswhyaparticular modification wasbeingperformed) asnowidentified inRevision1oftheSSCA.Whenappropriate, references aremadetothenewengineering evaluations inSection9thathavebeenperformed sincetheoriginalMarch1983'SCAsubmittal.

Reference isalsomade,whenappropriate, totheexemption requestsinSection7.Inaddition, pages8-1,8-4,8-27,8-28,and8-33through8-36providemoredetailedinformation givenonthecriteriausedincompiling theinformation intheSSCAandalsosomeclarifications onthisinformation.

Subsection 8.1,page8-4ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection 8.6A,pages8-7,8-12A,8-13ThesechangesreflecttheadditionofTrays/Conduits protected asaresultoffurtherdesignverification.

Subsection 8.20.3,page8-27ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.Subsection 8.21.3,page8-28ThistextreflectsthechangestotheSSCAduetotheadditionofnewfirezones.page8-18ThesechangesreflecttheadditionofTrays/Conduits protected asaresultoffurtherdesignverification.

'4LAttachment 2toAEP:NRC.692AZPage11page8-31Thesechangesreflecttheaddi,tion ofTrays/Conduits protected asaresultoffurtherdesignverification.

pages8-33through8-36Thistextwaschangedtoreflectthe'addition ofLSIpanelsLSI-5and"LSI-6directlynexttoLSI-1andLSI-2respectively.

Thesetwonewpanelswereaddedbecausetherewasnotsufficient roomonLSIpanels1and2fortheadditional instrumentation.

Section9Subsections 9.1through9e41Section9isanentirelynewsection.Itprovidesacompilation offireareaboundaryevaluations whichhavebeenperformed sincetheissuanceoftheMarch1983SSCAReport;Theseengineering evaluations wereperformed tojustifyunratedcomponents offireareaboundaries, orwhencombining variousfireareasorzones.Eachevaluation wasanalyzedforitsimpactontheotherevaluations,and exemption requestscontained inthereport.e iP~40'\

40DocketFile18AfARtg87DOCKETNO(S).:50-315/314 ge.JohnDominiVicePresident IndianaandMichiganElectricCompanyc/oAmericanElectricPowerServiceCorporation 1Riverside PlazaColumbusi Ohio43216

SUBJECT:

D,CCookNuclearPlantpUnits1and2NRCPDRLocalPDRPRCSystemPWRg4RdgNDuncanDWigginton OGC-Bethesda ACRS(10)JPartlowBGrimesEJordanNThompson Thefollowing documents concerning ourreviewofthesubjectfacilityaretransmitted foryourinformation.

NoticeofReceiptofApplication, datedDraft/Final Environmental Statement, datedNoticeofAvailability ofDraft/Final Environmental Statement, datedSafety,Evaluation Report,orSupplement No.datedEnvironmental Assessment andFindingofNoSignificant Impact,datedNoticeofConsideration ofIssuanceofFacilityOperating LicenseorAmendment toFacilityOperating License,datedQBi-Weekly Notice;Applications andAmendments toOperating LicensesInvolving NoSignificant HazardsConsideratioris, dated03/12/87[seepage(s)37685/7707 Exemption, datedConstruction PermitNo.CPPR-,Amendment No.datedFacilityOperating LicenseNo.,Amendment No.datedOrderExtending Construction Completion Date,datedMonthlyOperating Reportfortransmitted byletterdatedQAnnual/Semi-Annual Report-transmitted byletter'dated

Enclosures:

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

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