ML17331B070

Proposed Tech Specs 4.6.5.1.b.1,2 & 3,changing Ice Condenser Bed SR from 9 Months to 18 Months

ML17331B070
Person / Time
Site:	Cook
Issue date:	11/15/1993
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
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ML17331B069	List: ML17331B068 ML17331B070
References
NUDOCS 9311190298
Download: ML17331B070 (15)

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Attachment2toAEP:NRC:1193ExistingTechnicalSpecificationsforDonaldC.CookNuclearPlantUnits1and2MarkedtoReflectProposedChanges9311190298931115PDRADOCK"05000315'-PPDR I~~~~1~~~~~~~~~~~~~~~~~~~~~all~~~~~~~~~~~~'I~~~'~~~~'~I'I~~~~~~I~~~~I~~~~'I~~~'~'~~~~~~~~~'~'~~~~~~II~~~~,,~,~~~I~~~'~~~~~~\~

CONTAINMENTSYSTEMSSURVEILLANCEREUIREMEHTSContinuedshallbeconstitutedofonebasketeachfromRadialRows1,2,4,6,8and9(orfromthesamerowofanadjacentbayifabasketfromadesignatedrowcannot,beobtainedforweighing)withineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentativesampleof20additionalbasketsfromthesamebayshallbe'eighed.Theminimumaverageweightoficefromthe20additionalbasketsandthediscrepantbasketshallnotbelessthan1220pounds/basketata958levelofconfidence.Theicecondensershallalsobesubdividedinto3groupsofbaskets,asfollows:Group1-bays1through8,Group2-bays9through16,andGroup3-bays17through24.TheminimumaverageiceweightofthesamplebasketsfromRadialRows1,2,4,6,8and9ineachgroupshallnotbelessthan1220pounds/basketata954levelofconfidence.Theminimumtotalicecondensericeweightata95%levelofconfidenceshallbecalculatedusingallicebasketweightsdeterminedduringthisweighingprogramandshallnotbelessthan2,371;450pounds.3.Verifying,byavisualinspectionofatleasttwoflowpassagespericecondenserbay,thattheaccumulationoffrostoriceonthetopdeckfloorgrating,ontheintermediatedeckandonflowpassagesbetweenicebasketsandpast.latticeframesisrestrictedtoanominalthicknessof3/8inches.Ifoneflowpassageperbayisfoundtohaveanaccumulationoffrostoricegreaterthanthisthickness,arepresentativesampleof20additionalflowpassagesfromthesamebayshallbevisuallyinspected.Iftheseadditionalflowpassagesarefoundacceptable,thesurveillanceprogrammayproceedconsideringthesingledeficiencyasuniqueandacceptable.Morethanonerestrictedflowpassageperbayisevidenceofabnormaldegradationoftheicecondenser.C.Atleastonceper18monthsbyverifying,byavisualinspection,eachicecondenserbay,thattheaccumulationoffrostoriceonthelowerinletplenumsupportstructuresandturningvanesisrestrictedtoanominalthicknessof3/8inches.Anaccumulationoffrostandicegreaterthanthisthicknessisevidenceofabnormaldegradationoftheicecondenser.d.Atbreastonceper40monthsbyliftingandvisuallyinspecting.theaccessibleportionsofatleasttwoicebasketsfromeach1/3oftheicecondenserandverifyingthattheicebasketsarefreeofdetrimentalstructuralwear,cracks,corrosionorotherdamage.Theicebasketsshallberaisedatleast12feetforthisinspection.COOKNUCLEARPLANT-UNIT13/46-27AMENDMENTNO.l08,f21,138,144

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COm~~STS~SUIVKZILAN&M~BAHTSContinuedshal1beconstitutedofonebasketeachfrom~diaLRNts1~2~4y6,8and9(orfromthesameroeofanad5acentbayifabasketfxomadesignatedxovcannotbeobtainedfox"veighiag)vithin~achbay.Zfaaybasketisfoundtocontainlessthan1220poundsofice.axepresentativesampleof20additioaalbaskets'romthesamebayshallb>>veighed.Theminimumaverageveightoficefromthe20additionalbasketsandthediscrepantbasketshallaotbelessthan1220pounds/basketata95%levelofconfidence.Theicecondensershallalsobesubdividedinto3grcnzpaofbaskets,asfollovs:Croup1-bays1through4,Croup2-bays9through16,andCroup3-bays17through24.Theminimumaverageiceveightofth>>samplebasketsfrcnaRadialhnrs1,2,4,6,band9ineachgxoupshalLaotbelessthan1220pounds/basketat,a95%levelofconfidence.TheminimumtotaLicecondenseziceveightata95%levelofconfidenceshallbecalculatedusingallicebasketreightsdeterminedduringthisveighingpzogramandshallnotbelessthan2,371,450pounds.3.Verifying,byavisualinspectionoiatleastxvoflovpassagespericecondenserbay,thattheaccelationoffzostoxiceonthetopdeckfloorgrating,ontheintermediatedeckandoaflovpassagesbetveenicebasketsaadpastlatticeframesisrestrictedtoanominalthicknessof3/8inches.Ztoneflowpassagepexbayi.sfoundtohaveanaccumulationoffrostoxicegzeaterthanthisthickness,arepresentativesampleof20additionalflovpassagesfromthesamebayshallbevisuaLLyinspected.Iftheseadditionalflovpassagesax'efoundacceptable,thesurveillancepzogrammaypx'oceedconsideringthesingledeficiencyasuniqueandacceptable.Morethaaonerestx'ictedflovpassagepezbayisevidenceofabnormaldegradationoftheicecondensex.C~'htleastonceperLdmonthsbyverifying,byavisualinspectioa,of<<achicecondenserbay,thattheaccumulationoffzostoriceontheloverplenumsupportstructuxesandtuzaingvanceisrestrictedtoanominalthicknessof3/8inches.Anaccumulationoffrostox'cegreaterthanthisthicknessisevidenceofabnormaldegradatioaoftheicecondenser.d.Atleastoncepez40monthsbyliftingandvt.suallyinspectingtheaccessibleportionsofatleasttvoicebasketsfromeach1/3oftheicecondensersndverifyingthattheicebasketsazefx'eeofdetrimentalstructuzalveer,cracks,corrosionorotherdamage.Theicebasketsshallberai.sedatleast12featforthisinspection.COOKNUCLEARPLANT-UNIT23/46-36AMENDMENTNO)P,125 CONTAIQlENTSYSTEMSBASES3/4.6.4COMBUSTIBLEGASCONTROLTheOPERABILITYoftheequipmentandsystemsrequiredforthedetec-tionandcontrolofhydrogengasensuresthatthisequipmentwill'beavailabletomaintainthehydrogenconcentrationwithincontainmentbelowitsflammablelimitduringpost-LOCAconditions.Eitherrccombinerunitiscapableofcontrollingtheexpectedhydrogengenerationassociatedwith1)zirconium-waterreactions,2)radiolyticdecompositionofwaterand3)corrosionofmetalswithincontainment.Thesehydrogencontrolsystemsarons7st>ht~it'h-theŽrccommendrtions-ofReguUrtory..Guile..l;7,"ControlofCombustibleGasConcentrationsinContainmentFollowingalOCA",March1971.3/C.6.5ICECONDENSERTherequirementsassociatedwitheachofthecomponentsoftheicecondenserensurethat.thcoverallsystemwillbeavailabletoprovidesufficientpressuresuppressioncapabilitytolimitthecontainmentpeakpressuretransienttolessthan12psigduringLOCAconditions.B3/46-.4amendmentNo,13/4.6.5.1ICEBEDTheOPERABILITYofthe,icebedensuresthattherequirediceinven-torywill1)bedistributedevenlythroughth~containmentbays,2)con-tainsufficientborontoprecludedilutionofthecontainmentsumpfollow-ingtheLOCAand3)containsuf,icientheatremovalcapabilitytocondensethereactorsystemvolumereleasedduringaLOCA.Theseconditionsarc'.consistentwiththeassumptionsusedintheaccidentanalyses.Theminimum+eightfigureof1220poundsoficeperbasketcontainsa10>>conservativeallowanceforicelossthroughsublimationwhichisafactorof10higherthanassumedfottheicecondenserdesign.Intheeventthatobservedsublimation.rates'areequaltoorlowerthande'sign'redictionsafterthreeyears'foperation,theminimumicebasketsweight.maybeadjusteddownward.Inaddition',thenumberoficebaskets.requiredtobeweightedeachgI8monthsmay'ereducedafter'3.yearsof'peraionifsuchareductionissupportedbyobservedsublimation'data.'4.6.5.2ICEBEDTEHPERATUREHONITORINGSYSTEHTheOPERABILITY-oftheicebedtemperaturemonitoringsystemensuresthatthecapabilityfsavailablefor.monitoringtheicetemperature.Intheeventthemonitoringsystemisinoperablc,theACTIONrequirementsprovideassurancethattheicebedheatremovalcapacitywill.beretaineiwithinthespecifiedtimelimits.D.C.COOK-UNIT2 k,'IE Attachment3toAEP:NRC:1193ProposedTechnicalSpecificationsforDonaldC.CookNuclearPlantUnits1and2

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CONTAINMENTSYSTEMSSURVEILLANCEREUIMDKNTSContinuedshallbeconstitutedofonebasketeachfromRadialRows1,2,4,6,8and9(orfromthesamerowofanadjacentbayifabasketfromadesignatedrowcannotbeobtainedforweighing)withineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentativesampleof20additSonalbasketsfromthesamebayshallbe'eighed.Theminimumaverageweightoficefromthe20additionalbasketsandthediscrepantbasketshallnotbelessthan1220pounds/basketata95$levelofconfidence.Theicecondensershallalsobesubdividedinto3groupsofbaskets,asfollows:Group1-bays1through8,Group2-bays9through16,andGroup3-bays17through24.ThemSnimumaverageiceweightofthesamplebasketsfromRadialRows1,2,4,6,8and9ineachgroupshallnotbelessthan1220pounds/basketata954levelofconfidence.ThemininmntotalScecondensericeweightata95%levelofconfidenceshallbecalculatedusingallicebasketweS.ghtsdeterminedduringthisweighingprogramandshallnotbelessthan2,371',450pounds.3.Verifying,byavisualinspectS.onofatleasttwoflowpassagesperScecondenserbay,thattheaccumulationoffrostoriceonthetopdeckfloorgrating,ontheintermediatedeckandonflowpassagesbetweenicebasketsandpastlatticeframesisrestrictedtoanominalthicknessof3/8inches.Ifoneflowpassageperbayisfoundtohaveanaccumulationoffrostoricegreaterthanthisthickness,arepresentativesampleof20addi.tionalflowpassagesfromthesamebayshallbevisuallyinspected.Iftheseadditionalflowpassagesarefoundacceptable,thesurveillanceprogrammayproceedconsideringthesingledeficiencyasuniqueandacceptable.Morethanonerestrictedflowpassageperbayisevidenceofabnormaldegradationoftheicecondenser.c~Atleastonceper18monthsbyverifying,byavisualinspection,eachicecondenserbay,thattheaccumulationoffrostoriceonthelowerinletplenumsupportstructuresandturningvanesisrestrictedtoanominalthicknessof3/8inches.Anaccumulationoffrostandicegreaterthanthisthicknessisevidenceofabnormaldegradationoftheicecondenser.d.Atbreastonceper40monthsbyliftingandvisuallyinspectingtheaccessibleportionsofatleasttwoicebasketsfromeach1/3oftheicecondenserandverifyingthattheicebasketsarefreeofdetrimentalstructuralwear,cracks,corrosionorotherdamage.Theicebasketsshallberaisedatleast12feetforthisinspection.COOKNUCLEARPLANT-UNIT13/46-27AMENDMENTNO.108,f21,138i144

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~VZZXLANCXREUIEErfEHTSContinuedshallbeconstitutedofoaebasketeachfromRadialLoca1,2,4,6,8and9(ortzoathesamerovofanad)aceatbayifabasketfromadesignatedrovcannotbeobtainedtorveighing)vithineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentativesampleof20additioaalbasketsfromthesamebiyshallbeveighed.Theminimumsaverageveightoficetroathe20addi.tionalbasketsindthediscrepantbasketshallnotbelessthan1220pounds/basketata95%levelofconfidence.Thei.cecondensershallalsobesubdividedinto3groupsofbaskets,isfollovs:Czoup1-bays1thzough8,Croup2-bays9through16,aad'Croup3-bays17through24.TheaCaimaaverageiceveightofthesamplebasketsfromkadialkcnrs1,2,4,6,8iad9ineachgroupshallnotbelesschan1220pounds/basketaca95%levelofconfi.dence.Theminimumtotali.cecondensericevei.ghc,ata95%levelofconfidenceshillbecalculatedusingallicebasketreightsdeterminedduringthisveighingprogramindshallnotbelessthin2,371,450pounds.3.Verifying,byavisualinspectionoiicleasttvoflovpassagespezi,cecondenserbay,thattheaccelationoffrostoriceonchetopdeckfloorgrating,onthe'ncermediatedeckandonflovpassagesbecveenicebasketsindpastlicciceframesisrestrictedtoanominalthicknessof3/8inches.Ifoneflovpassageperbiyisfoundtohaveanaccumulationoftroatoricegzeacerthanthisthi.ckness,irepresentacivesampleof20addi.tioaaltlovpassagesfromthesamebayshallbevisuallyinspected.Iftheseadditionalflovpassagesarefoundacceptable,thesurveillanceprogrammayproceedconsideringthesingledeficiencyisuniqueandacceptable.Morethanonerestrictedflovpassageperbayisevidenceotabnormaldegradationoftheicecondensez.C~'Atleastonceper18monthsbyverifying,byavisualinspection,ofeichicecondenserbay,thattheaccumulationoftroscoriceontheloverplenumsupportstructuresindturningvinesisrestrictedtoanominalthicknessof3/8inches.Anaccmxlationoffrostori.cegreaterthanthisthicknessisevidenceofabnormaldegridatioaoftheicecondenser.d.Atleastonceper40monthsbyliftingindvisuallyinspectingtheaccessibLeportionsofatleasttvoi.cebasketsfromeach1/3ottheicecondenserindverifyingthattheicebasketsizetreeofdetrimentalstructuralveer,cracks,corrosionorotherdamage.Theicebasketsshallberaisedaclease12feetforthisinspection.COOKNUCLEARPLANT-UNIT23/46-36AMENDMENTNOPP,125 CONTAItPENTSYSTEMSBASES3/4.6.4COMBUSTIBLEGASCONTROLThcOPERABILITYoftheequipmentandsystemsrequiredforthedetec'-'ionandcontrolof.hydrogengasensures'thatthisequipmentwill.'beavailabletomafntafnthehydrogenconcentrationwithincontainmentbelowitsflaim-,iblelimitduringpost-LOCAconditions.Eitherrecombfnerunitfscapableofcontrollingtheexpectedhydrogengenerationassociatedwith1)zirconium-waterreactions,2)radfolytfcdecompositionofwaterand3)corrosionofmetalswithincontainment.Thesehydrogencontrolsystemsare'onsisfMt~fth-therecammendrtfons-ofRegubitory.Gu&c..l;7,."ControlofCombustibleGasConcentrationsfnContainmentFollowingaLOCA",Marchlg71.3/4.6.5ICECONDENSERTherequirementsassociatedwitheachofthecomponentsoftheicecondenserensurethat.thcoverallsystemwillbcavailabletoprovidesufficientpressuresuppressioncapabilitytolimitthccontainmentpeakpressuretransientto1essthan12psfgduringLOCAconditions.'/4.6.5.1ICEBEDB3/46-.4AmendmentNa,1TheOPERABILITYofthc.icebedensyresthattherequiredfceinven-torywill1)bedistributedevenlythroughth~contafnmentbays,2)con-tainsufficientborontoprecludedilutionofthecontainmentsumpfollow-ingtheLOCAand3)containsufficientheatremovalcapabilitytocondensethereactorsystemvolume.re1easedduringaLOCA.'Theseconditionsare'.consistentwiththeassumptionsusedintheaccidentanalyses.Theminimum~eightfigureof1220poundsoficeperbasketcontainsa10>>conservativealiowa'nceforice.lossthroughsublimationwhichisafactorof10higherthanassumedforthefceco~denserdesign.Inthe'ventthatobservedsublimation.rates'hreequaltoorlowerthandesign,predict/onsafterthreeyearsofoperation,theminimumicebaskets~eightmaybeadjusteddownward.Inaddition',thenumberoffcebasketsrequiredtobeweightedeachj.8monthsmay'ereducedafter'3.yearsof'perationifsuchareductionissupportedbyobservedsublimatfon'data,034.6.5.2ICEBEDTEMPERATUREMONITORINGSYSTEMTheOPERABILITY.oftheicebedtemperaturemonitoringsystemensuresthatthecapabilityisavailablefor.monitoringthefcetemperature..In"theeventthcmonitoringsystemisinoperable,theACTIONrequirementsprovideassurancethatthcicebedheatremovalcapacitywill.beretafneiwithinthespecifiedtimelimits.D.C.COOK-UNIT2 P+5'I'I~cgC