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
To:
Shared Package
ML17331B069	List: ML17331B068 ML17331B070
References
NUDOCS 9311190298
Download: ML17331B070 (15)

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Attachment 2toAEP:NRC:1193 ExistingTechnical Specifications forDonaldC.CookNuclearPlantUnits1and2MarkedtoReflectProposedChanges9311190298 931115PDRADOCK"05000315'-PPDR I~~~~1~~~~~~~~~~~~~~~~~~~~~all~~~~~~~~~~~~'I~~~'~~~~'~I'I~~~~~~I~~~~I~~~~'I~~~'~'~~~~~~~~~'~'~~~~~~II~~~~,,~,~~~I~~~'~~~~~~\~

CONTAINMENT SYSTEMSSURVEILLANCE REUIREMEHTS Continued shallbeconstituted ofonebasketeachfromRadialRows1,2,4,6,8and9(orfromthesamerowofanadjacentbayifabasketfromadesignated rowcannot,beobtainedforweighing) withineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentative sampleof20additional basketsfromthesamebayshallbe'eighed.

Theminimumaverageweightoficefromthe20additional basketsandthediscrepant basketshallnotbelessthan1220pounds/basket ata958levelofconfidence.

Theicecondenser shallalsobesubdivided into3groupsofbaskets,asfollows:Group1-bays1through8,Group2-bays9through16,andGroup3-bays17through24.TheminimumaverageiceweightofthesamplebasketsfromRadialRows1,2,4,6,8and9ineachgroupshallnotbelessthan1220pounds/basket ata954levelofconfidence.

Theminimumtotalicecondenser iceweightata95%levelofconfidence shallbecalculated usingallicebasketweightsdetermined duringthisweighingprogramandshallnotbelessthan2,371;450 pounds.3.Verifying, byavisualinspection ofatleasttwoflowpassagespericecondenser bay,thattheaccumulation offrostoriceonthetopdeckfloorgrating,ontheintermediate deckandonflowpassagesbetweenicebasketsandpast.latticeframesisrestricted toanominalthickness of3/8inches.Ifoneflowpassageperbayisfoundtohaveanaccumulation offrostoricegreaterthanthisthickness, arepresentative sampleof20additional flowpassagesfromthesamebayshallbevisuallyinspected.

Iftheseadditional flowpassagesarefoundacceptable, thesurveillance programmayproceedconsidering thesingledeficiency asuniqueandacceptable.

Morethanonerestricted flowpassageperbayisevidenceofabnormaldegradation oftheicecondenser.

C.Atleastonceper18monthsbyverifying, byavisualinspection, eachicecondenser bay,thattheaccumulation offrostoriceonthelowerinletplenumsupportstructures andturningvanesisrestricted toanominalthickness of3/8inches.Anaccumulation offrostandicegreaterthanthisthickness isevidenceofabnormaldegradation oftheicecondenser.

d.Atbreastonceper40monthsbyliftingandvisuallyinspecting

.theaccessible portionsofatleasttwoicebasketsfromeach1/3oftheicecondenser andverifying thattheicebasketsarefreeofdetrimental structural wear,cracks,corrosion orotherdamage.Theicebasketsshallberaisedatleast12feetforthisinspection.

COOKNUCLEARPLANT-UNIT13/46-27AMENDMENT NO.l08,f21,138,144

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COm~~STS~SUIVKZILAN&M~BAHTSContinued shal1beconstituted ofonebasketeachfrom~diaLRNts1~2~4y6,8and9(orfromthesameroeofanad5acentbayifabasketfxomadesignated xovcannotbeobtainedfox"veighiag) vithin~achbay.Zfaaybasketisfoundtocontainlessthan1220poundsofice.axepresentative sampleof20additioaal baskets'romthesamebayshallb>>veighed.Theminimumaverageveightoficefromthe20additional basketsandthediscrepant basketshallaotbelessthan1220pounds/basket ata95%levelofconfidence.

Theicecondenser shallalsobesubdivided into3grcnzpaofbaskets,asfollovs:Croup1-bays1through4,Croup2-bays9through16,andCroup3-bays17through24.Theminimumaverageiceveightofth>>samplebasketsfrcnaRadialhnrs1,2,4,6,band9ineachgxoupshalLaotbelessthan1220pounds/basket at,a95%levelofconfidence.

TheminimumtotaLicecondensez iceveightata95%levelofconfidence shallbecalculated usingallicebasketreightsdetermined duringthisveighingpzogramandshallnotbelessthan2,371,450 pounds.3.Verifying, byavisualinspection oiatleastxvoflovpassagespericecondenser bay,thattheaccelationoffzostoxiceonthetopdeckfloorgrating,ontheintermediate deckandoaflovpassagesbetveenicebasketsaadpastlatticeframesisrestricted toanominalthickness of3/8inches.Ztoneflowpassagepexbayi.sfoundtohaveanaccumulation offrostoxicegzeaterthanthisthickness, arepresentative sampleof20additional flovpassagesfromthesamebayshallbevisuaLLyinspected.

Iftheseadditional flovpassagesax'efoundacceptable, thesurveillance pzogrammaypx'oceedconsidering thesingledeficiency asuniqueandacceptable.

Morethaaonerestx'icted flovpassagepezbayisevidenceofabnormaldegradation oftheicecondensex.

C~'htleastonceperLdmonthsbyverifying, byavisualinspectioa, of<<achicecondenser bay,thattheaccumulation offzostoriceontheloverplenumsupportstructuxes andtuzaingvanceisrestricted toanominalthickness of3/8inches.Anaccumulation offrostox'cegreaterthanthisthickness isevidenceofabnormaldegradatioa oftheicecondenser.

d.Atleastoncepez40monthsbyliftingandvt.sually inspecting theaccessible portionsofatleasttvoicebasketsfromeach1/3oftheicecondenser sndverifying thattheicebasketsazefx'eeofdetrimental structuzal veer,cracks,corrosion orotherdamage.Theicebasketsshallberai.sedatleast12featforthisinspection.

COOKNUCLEARPLANT-UNIT23/46-36AMENDMENT NO)P,125 CONTAIQlENTSYSTEMSBASES3/4.6.4COMBUSTIBLE GASCONTROLTheOPERABILITY oftheequipment andsystemsrequiredforthedetec-tionandcontrolofhydrogengasensuresthatthisequipment will'beavailable tomaintainthehydrogenconcentration withincontainment belowitsflammable limitduringpost-LOCA conditions.

Eitherrccombiner unitiscapableofcontrolling theexpectedhydrogengeneration associated with1)zirconium-water reactions, 2)radiolytic decomposition ofwaterand3)corrosion ofmetalswithincontainment.

Thesehydrogencontrolsystemsarons7st>ht~it'h-theŽrccommendrtions-of ReguUrtory..Guile..l;7, "ControlofCombustible GasConcentrations inContainment Following alOCA",March1971.3/C.6.5ICECONDENSER Therequirements associated witheachofthecomponents oftheicecondenser ensurethat.thcoverallsystemwillbeavailable toprovidesufficient pressuresuppression capability tolimitthecontainment peakpressuretransient tolessthan12psigduringLOCAconditions.

B3/46-.4amendment No,13/4.6.5.1ICEBEDTheOPERABILITY ofthe,icebedensuresthattherequirediceinven-torywill1)bedistributed evenlythroughth~containment bays,2)con-tainsufficient borontoprecludedilutionofthecontainment sumpfollow-ingtheLOCAand3)containsuf,icient heatremovalcapability tocondensethereactorsystemvolumereleasedduringaLOCA.Theseconditions arc'.consistent withtheassumptions usedintheaccidentanalyses.

Theminimum+eightfigureof1220poundsoficeperbasketcontainsa10>>conservative allowance foricelossthroughsublimation whichisafactorof10higherthanassumedfottheicecondenser design.Intheeventthatobservedsublimation.

rates'areequaltoorlowerthande'sign'redictions afterthreeyears'foperation, theminimumicebasketsweight.maybeadjusteddownward.

Inaddition',

thenumberoficebaskets.requiredtobeweightedeachgI8months may'ereducedafter'3.yearsof'peraionifsuchareductionissupported byobservedsublimation

'data.'4.6.5.2ICEBEDTEHPERATURE HONITORING SYSTEHTheOPERABILITY-of theicebedtemperature monitoring systemensuresthatthecapability fsavailable for.monitoring theicetemperature.

Intheeventthemonitoring systemisinoperablc, theACTIONrequirements provideassurance thattheicebedheatremovalcapacitywill.beretaineiwithinthespecified timelimits.D.C.COOK-UNIT2 k,'IE Attachment 3toAEP:NRC:1193 ProposedTechnical Specifications forDonaldC.CookNuclearPlantUnits1and2

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CONTAINMENT SYSTEMSSURVEILLANCE REUIMDKNTSContinued shallbeconstituted ofonebasketeachfromRadialRows1,2,4,6,8and9(orfromthesamerowofanadjacentbayifabasketfromadesignated rowcannotbeobtainedforweighing) withineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentative sampleof20additSonal basketsfromthesamebayshallbe'eighed.

Theminimumaverageweightoficefromthe20additional basketsandthediscrepant basketshallnotbelessthan1220pounds/basket ata95$levelofconfidence.

Theicecondenser shallalsobesubdivided into3groupsofbaskets,asfollows:Group1-bays1through8,Group2-bays9through16,andGroup3-bays17through24.ThemSnimumaverageiceweightofthesamplebasketsfromRadialRows1,2,4,6,8and9ineachgroupshallnotbelessthan1220pounds/basket ata954levelofconfidence.

ThemininmntotalScecondenser iceweightata95%levelofconfidence shallbecalculated usingallicebasketweS.ghtsdetermined duringthisweighingprogramandshallnotbelessthan2,371',450 pounds.3.Verifying, byavisualinspectS.

onofatleasttwoflowpassagesperScecondenser bay,thattheaccumulation offrostoriceonthetopdeckfloorgrating,ontheintermediate deckandonflowpassagesbetweenicebasketsandpastlatticeframesisrestricted toanominalthickness of3/8inches.Ifoneflowpassageperbayisfoundtohaveanaccumulation offrostoricegreaterthanthisthickness, arepresentative sampleof20addi.tional flowpassagesfromthesamebayshallbevisuallyinspected.

Iftheseadditional flowpassagesarefoundacceptable, thesurveillance programmayproceedconsidering thesingledeficiency asuniqueandacceptable.

Morethanonerestricted flowpassageperbayisevidenceofabnormaldegradation oftheicecondenser.

c~Atleastonceper18monthsbyverifying, byavisualinspection, eachicecondenser bay,thattheaccumulation offrostoriceonthelowerinletplenumsupportstructures andturningvanesisrestricted toanominalthickness of3/8inches.Anaccumulation offrostandicegreaterthanthisthickness isevidenceofabnormaldegradation oftheicecondenser.

d.Atbreastonceper40monthsbyliftingandvisuallyinspecting theaccessible portionsofatleasttwoicebasketsfromeach1/3oftheicecondenser andverifying thattheicebasketsarefreeofdetrimental structural wear,cracks,corrosion orotherdamage.Theicebasketsshallberaisedatleast12feetforthisinspection.

COOKNUCLEARPLANT-UNIT13/46-27AMENDMENT NO.108,f21,138i144

~<I~~~I'~~'I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'~~~~~~I~~~~I'~\~~~~~~~~~~~~~~~~~~~~~.~~'~I~~~~I~~~

~VZZXLANCX REUIEErfEHTS Continued shallbeconstituted ofoaebasketeachfromRadialLoca1,2,4,6,8and9(ortzoathesamerovofanad)aceatbayifabasketfromadesignated rovcannotbeobtainedtorveighing) vithineachbay.Ifanybasketisfoundtocontainlessthan1220poundsofice,arepresentative sampleof20additioaal basketsfromthesamebiyshallbeveighed.Theminimumsaverageveightoficetroathe20addi.tional basketsindthediscrepant basketshallnotbelessthan1220pounds/basket ata95%levelofconfidence.

Thei.cecondenser shallalsobesubdivided into3groupsofbaskets,isfollovs:Czoup1-bays1thzough8,Croup2-bays9through16,aad'Croup 3-bays17through24.TheaCaimaaverageiceveightofthesamplebasketsfromkadialkcnrs1,2,4,6,8iad9ineachgroupshallnotbelesschan1220pounds/basket aca95%levelofconfi.dence.

Theminimumtotali.cecondenser icevei.ghc,ata95%levelofconfidence shillbecalculated usingallicebasketreightsdetermined duringthisveighingprogramindshallnotbelessthin2,371,450 pounds.3.Verifying, byavisualinspection oiicleasttvoflovpassagespezi,cecondenser bay,thattheaccelationoffrostoriceonchetopdeckfloorgrating,onthe'ncermediate deckandonflovpassagesbecveenicebasketsindpastlicciceframesisrestricted toanominalthickness of3/8inches.Ifoneflovpassageperbiyisfoundtohaveanaccumulation oftroatoricegzeacerthanthisthi.ckness, irepresentacive sampleof20addi.tioaal tlovpassagesfromthesamebayshallbevisuallyinspected.

Iftheseadditional flovpassagesarefoundacceptable, thesurveillance programmayproceedconsidering thesingledeficiency isuniqueandacceptable.

Morethanonerestricted flovpassageperbayisevidenceotabnormaldegradation oftheicecondensez.

C~'Atleastonceper18monthsbyverifying, byavisualinspection, ofeichicecondenser bay,thattheaccumulation oftroscoriceontheloverplenumsupportstructures indturningvinesisrestricted toanominalthickness of3/8inches.Anaccmxlation offrostori.cegreaterthanthisthickness isevidenceofabnormaldegridatioa oftheicecondenser.

d.Atleastonceper40monthsbyliftingindvisuallyinspecting theaccessibLe portionsofatleasttvoi.cebasketsfromeach1/3ottheicecondenser indverifying thattheicebasketsizetreeofdetrimental structural veer,cracks,corrosion orotherdamage.Theicebasketsshallberaisedaclease12feetforthisinspection.

COOKNUCLEARPLANT-UNIT23/46-36AMENDMENT NOPP,125 CONTAItPENT SYSTEMSBASES3/4.6.4COMBUSTIBLE GASCONTROLThcOPERABILITY oftheequipment andsystemsrequiredforthedetec'-'ion andcontrolof.hydrogengasensures'thatthisequipment will.'beavailable tomafntafnthehydrogenconcentration withincontainment belowitsflaim-,ible limitduringpost-LOCA conditions.

Eitherrecombfner unitfscapableofcontrolling theexpectedhydrogengeneration associated with1)zirconium-water reactions, 2)radfolytfc decomposition ofwaterand3)corrosion ofmetalswithincontainment.

Thesehydrogencontrolsystemsare'onsisfMt~fth-the recammendrtfons-of Regubitory

.Gu&c..l;7,.

"ControlofCombustible GasConcentrations fnContainment Following aLOCA",Marchlg71.3/4.6.5ICECONDENSER Therequirements associated witheachofthecomponents oftheicecondenser ensurethat.thcoverallsystemwillbcavailable toprovidesufficient pressuresuppression capability tolimitthccontainment peakpressuretransient to1essthan12psfgduringLOCAconditions.

'/4.6.5.1 ICEBEDB3/46-.4Amendment Na,1TheOPERABILITY ofthc.icebedensyresthattherequiredfceinven-torywill1)bedistributed evenlythroughth~contafnment bays,2)con-tainsufficient borontoprecludedilutionofthecontainment sumpfollow-ingtheLOCAand3)containsufficient heatremovalcapability tocondensethereactorsystemvolume.re1eased duringaLOCA.'Theseconditions are'.consistent withtheassumptions usedintheaccidentanalyses.

Theminimum~eightfigureof1220poundsoficeperbasketcontainsa10>>conservative aliowa'nce forice.lossthroughsublimation whichisafactorof10higherthanassumedforthefceco~denser design.Inthe'ventthatobservedsublimation.rates

'hreequaltoorlowerthandesign,predict/ons afterthreeyearsofoperation, theminimumicebaskets~eightmaybeadjusteddownward.

Inaddition',

thenumberoffcebasketsrequiredtobeweightedeachj.8monthsmay'ereducedafter'3.yearsof'peration ifsuchareduction issupported byobservedsublimatfon'data,'

'034.6.5.2ICEBEDTEMPERATURE MONITORING SYSTEMTheOPERABILITY.

oftheicebedtemperature monitoring systemensuresthatthecapability isavailable for.monitoring thefcetemperature..

In"theeventthcmonitoring systemisinoperable, theACTIONrequirements provideassurance thatthcicebedheatremovalcapacitywill.beretafneiwithinthespecified timelimits.D.C.COOK-UNIT2 P+5'I'I~cgC