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{{#Wiki_filter:ACCEIEEDDOCUMENTDISUTIONSYSTEMREGU.LORYINFORMATIONDISTRIBUTSYSTEM(RIDS)ACCESSIONNBR:9311190285DOC.DATE:93/11/12NOTARIZED:YESDOCKETFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATIONFITZPATRICK,E.IndianaMichiganPowerCo.(formerlyIndiana&MichiganEleRECIP.NAMERECIPIENTAFFILIATIONMURLEY,T.E.DocumentControlBranch(DocumentControlDesk)
{{#Wiki_filter:ACCEIEEDDOCUMENTDISUTIONSYSTEMREGU.LORYINFORMATION DISTRIBUT SYSTEM(RIDS)ACCESSION NBR:9311190285 DOC.DATE:
93/11/12NOTARIZED:
YESDOCKETFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATION FITZPATRICK,E.
IndianaMichiganPowerCo.(formerly Indiana&MichiganEleRECIP.NAME RECIPIENT AFFILIATION MURLEY,T.E.
DocumentControlBranch(Document ControlDesk)


==SUBJECT:==
==SUBJECT:==
ApplicationforamendstolicensesDPR-58&DPR-74,modifyingTS3/4.5.1,"Accumulators"suchthatTSmoreconsistentw/newSTSfor,Westinghouseplants,publishedbyNRCasNUREG-1431.DISTRIBUTIONCODE:AOOIDCOPIESRECEIVED:LTRgENCJSIZE:TITLE:ORSubmittal:GeneralDistributionID5NOTES:RECIPIENTIDCODE/NAMEPD3-1LAWETZEL,BCOPIESLTTRENCL1122RECIPIENTIDCODE/NAMEPD3-1PDCOPIESLTTRENCL11D(DINTERNAL:NRR/DE/EELBNRR/DRCH/HICBNRR/DSSA/SRXB-C/MDCBREGFILE01EXTERNAL:NRCPDR111111101111NRR/DORS/OTSBNRR/DSSA/SPLBNUDOCS-ABSTRACTOGC/HDS2NSIC1111111011DDNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.504-2065)TOELIMINATEYOURNAMEFROMDISTRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEEDtDTOTALNUMBEROFCOPIESREQUIRED:LTTR15ENCL13 IndianaMichi~PowerCompa~P.O.Box16631Columbus,OH43216AEP:NRC:1186DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74TECHNICALSPECIFICATIONCHANGEREQUEST:ACCUMULATORSU.S.NuclearRegulatoryCommissionDocumentControlDeskWashington,D.C.20555Attn:T.E.MurleyNovember12,1993
Application foramendstolicensesDPR-58&DPR-74,modifying TS3/4.5.1,"Accumulators" suchthatTSmoreconsistent w/newSTSfor,Westinghouse plants,published byNRCasNUREG-1431.
DISTRIBUTION CODE:AOOIDCOPIESRECEIVED:LTR gENCJSIZE:TITLE:ORSubmittal:
GeneralDistribution ID5NOTES:RECIPIENT IDCODE/NAME PD3-1LAWETZEL,BCOPIESLTTRENCL1122RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL11D(DINTERNAL:
NRR/DE/EELB NRR/DRCH/HICB NRR/DSSA/SRXB
-C/MDCBREGFILE01EXTERNAL:
NRCPDR111111101111NRR/DORS/OTSB NRR/DSSA/SPLB NUDOCS-ABSTRACT OGC/HDS2NSIC1111111011DDNOTETOALL"RIDS"RECIPIENTS:
PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.504-2065)
TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEEDtDTOTALNUMBEROFCOPIESREQUIRED:
LTTR15ENCL13 IndianaMichi~PowerCompa~P.O.Box16631Columbus, OH43216AEP:NRC:1186 DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74TECHNICAL SPECIFICATION CHANGEREQUEST:ACCUMULATORS U.S.NuclearRegulatory Commission DocumentControlDeskWashington, D.C.20555Attn:T.E.MurleyNovember12,1993


==DearDr.Murley:==
==DearDr.Murley:==
ThisletteranditsattachmentsconstituteanapplicationforamendmenttotheTechnicalSpecifications(T/Ss)fortheDonaldC.CookNuclearPlantUnits1and2.TheproposedchangesmodifyT/S3/4.5.1(Accumulators)suchthattheT/SismoreconsistentwiththenewStandardT/SsforWestinghouseplants,publishedbytheNRCasNUREG1431.AssociatedchangestothecorrespondingBasessectionarealsoproposed.Attachment1providesadetaileddescriptionoftheproposedchanges,thejustificationforthechanges,andourproposeddeterminationofnosignificanthazardsconsiderationperformedpursuantto10CFR50.92.Attachment2containstheexistingT/Spagesmarkedtoreflecttheproposedchange,Attachment3containstheproposed,revisedT/Spages.ThissubmittalproposeschangestoUnit2T/Spage3/45-2.AnadditionalchangetothispagewasproposedinoursubmittalAEP:NRC:1181,datedApril16,1993.Webelievethattheproposedchangewillnotresultin1)asignificantchangeinthetypesofeffluentsorasignificantincreaseintheamountofanyeffluentsthatmaybereleasedoffsite,or2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandbytheNuclearSafetyandDesignReviewCommittee.93i1190285..;PDR'DOCKP93iii2050003i5PDR.
Thisletteranditsattachments constitute anapplication foramendment totheTechnical Specifications (T/Ss)fortheDonaldC.CookNuclearPlantUnits1and2.TheproposedchangesmodifyT/S3/4.5.1(Accumulators) suchthattheT/Sismoreconsistent withthenewStandardT/SsforWestinghouse plants,published bytheNRCasNUREG1431.Associated changestothecorresponding Basessectionarealsoproposed.
Dr.T.E.Murley2-AEP:NRC:1186Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtoMr.J.R.PadgettoftheMichiganPublicServiceCommissionandtotheMichiganDepartmentofPublicHealth.Thisletterissubmittedpursuantto10CFR50.30(b),and,assuch,anoathstatementisattached.E.E.FitzpaickVicePresidentdrAttachmentscc:A.A.BlindG.CharnoffJ.B.Martin-RegionIIINFEMSectionChiefNRCResidentInspectorJ.R.Padgett COUNTYOFFRANKLINE.E.Fitzpatrick,beingdulysworn,deposesandsaysthatheistheVicePresidentoflicenseeIndianaMichiganPowerCompany,thathehasreadtheforgoingTECHNICALSPECIFICATIONCHANGEREQUEST:ACCUMULATORSandknowsthecontentsthereof;andthatsaidcontentsaretruetothebestofhisknowledgeandbelief.Subscribedandsworntobeforemethis~~dayof19NOTARPUBLICRITA0.HILLNOTARYPUBUC.STATEOFOHIO  
Attachment 1providesadetaileddescription oftheproposedchanges,thejustification forthechanges,andourproposeddetermination ofnosignificant hazardsconsideration performed pursuantto10CFR50.92.Attachment 2containstheexistingT/Spagesmarkedtoreflecttheproposedchange,Attachment 3containstheproposed, revisedT/Spages.Thissubmittal proposeschangestoUnit2T/Spage3/45-2.Anadditional changetothispagewasproposedinoursubmittal AEP:NRC:1181, datedApril16,1993.Webelievethattheproposedchangewillnotresultin1)asignificant changeinthetypesofeffluents orasignificant increaseintheamountofanyeffluents thatmaybereleasedoffsite,or2)asignificant increaseinindividual orcumulative occupational radiation exposure.
'r~'ItIf.>14j1 ATTACHMENT1TOAEP:NRC:118610CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECIFICATIONS Attachment1toAEP:NRC:1186Page1I.DESCRIPTIONOFTHECHANGESWeproposetomodifyT/S3/4.5.1(Accumulators)forUnits1and2of,theCookNuclearPlantsuchthattheT/SrequirementsaremoreconsistentwiththosecontainedinthenewStandardT/SsforWestinghouseplantspublishedbytheNRCasNUREG1431.Thespecificproposedchangesareasfollows:A.ActionStatementsAspresentlywritten,ActionStatement(a)providesguidancetobefollowedifasingleaccumulatorisinoperable,exceptasaresultofaclosedisolationvalve.Thisactionstatementallowsonehourtorestoreaninoperableaccumulatortooperablestatus,ortheunitmustbeplacedinMode4withinthefollowing8hours(Unit1)or12hours(Unit2).ActionStatement(b)providestherequirementsforasingleaccumulatorinoperableduetoaclosedisolationvalve.Inthiscase,thevalveistobeimmediatelyopened',ortheunitplacedinMode3withinonehourandMode4withinthenext8hours(Unit1)or12hours(Unit2).WeproposetoreplacethepresentActionStatementsaandbwithnewactionstatements.1)ActionStatement(a)providesguidancetobefollowediftheaccumulatorboronconcentrationisnotwithintheT/Slimits.Seventy-twohoursareallowedtorestoretheboronconcentrationtowithinthelimits.Iftheconcentrationisnotrestoredwithinthetimelimit,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizerpressurereducedbelow1,000psigwithinthefollow'ing6hours.B.2)ActionStatement(b)coversallotherinoperabilitiesofasingleaccumulator.WithanaccumulatorinoperableexceptasprovidedforinActionStatement(a),onehourisallowedtorestoretheaccumulatortooperablestatus.Iftheaccumulatorisnotrestoredtooperablestatuswithinonehour,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizerpressurereducedbelow1,000psigwithinthefollowing6hours.SurveillanceRequirements1)T/S4.5.1.bcurrentlyrequiresthattheaccumulatorbeverifiedoperable:Atleastonceper31daysandwithin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolumebyverifyingtheboronconcentrationoftheaccumulatorsolution.
TheproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andbytheNuclearSafetyandDesignReviewCommittee.
Attachment1toAEP:NRC:1186Page2Weareproposingtomodifythissurveillancerequirementsuchthatitreadsasfollows:Atleastonceper31days,and,fortheaffectedaccumulator(s),within6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolume(thatisnottheresultofadditionfromtherefuelingwaterstoragetank)byverifyingtheboronconcentrationoftheaccumulatorsolution.2)Weareproposingtodeletesurveillancerequirement4.5.1.d,whichrequiresverificationatleastonceper18monthsthateachaccumulatorisolationvalveopensautomaticallyuponreceiptofasafetyinjectiontestsignal.3)ForUnit1T/S4.5.1.a.l,weareproposingtochangetheterm"waterlevel"to"containedboratedwatervolume".C.BasesWeareproposingtomodifytheBasessectiontoreflectthechangestotheactionstatementsdiscussedabove.ThediscussionregardingactionstatementsinthecurrentBasesreflectstreatmentofaclosedisolationvalveasaspecialconditionofinoperabilityrequiringimmediateaction.WeareproposingtomodifytheBasesdiscussiononactionstatementstoincludetheBasesmaterialfortheactionstatementsfromNUREG1431.II.REASONSANDJUSTIFICATIONFORPROPOSEDCHANGESIngeneral,theproposedchangesareintendedtomaketheT/SsmoreconsistentwiththenewStandardT/SspublishedasNUREG1431.TheproposedchangeseliminateinconsistenciesinthepresentT/Ss,relaxcertainrequirementswhereappropriate,andeliminateunnecessarysurveillancerequirements.ActionStatementsAninconsistencyinthepresentT/Shasbeeneliminatedwiththenewproposedactionstatements.T/S3/4.5.1isapplicableinModes1and2,andMode3withpressurizerpressureabove1,000psig.ThepresentActionStatementsaandb,however,requiretheunittoeventuallybeplacedinMode4withtheLimitingConditionsforOperation(LCOs)notmet.TheproposedactionstatementscorrectthisinconsistencybyhavingtheterminalpointoftheshutdownbeMode3withpressurizerpressurebelow1,000psig.Thenewactionstatementsretaintheonehourtimelimitforrestorationofanaccumulatortooperablestatusformostinoperabilityconditions.However,thenewactionstatementsallowslightlymoretimeuntiltheunitmustbeshutdownduetoaninoperableaccumulator.
93i1190285
Attachment1toAEP:NRC:1186Page3Forexample,currently,withanaccumulatorinoperableduetocausesotherthanaclosedisolationvalve,onehourisallowedtorestoreoperabilityortheunitmustbeplacedinMode4within8hours(Unit1).Withthenewactionstatements,12hoursisallowed(beyondtheinitialonehour)toreachtheterminalpoint,whichisMode3withpressurizerpressurebelow1,000psig.TherequirementinthepresentT/SstoimmediatelyopenaclosedisolationvalveorplacetheplantinMode3withinonehourhasbeenremoved.Withtheproposedactionstatements,aclosedisolationvalvewouldbetreatedthesameasotherinoperabilityconditionsfortheaccumulators.Onehourwouldbepermittedtoopenthevalve,ortheunitmustbeplacedinMode3withinthenext6hoursandpressurizerpressurereducedbelow1,000psigwithinthefollowing6hours.Althoughlessconservative,thischangeallowsashutdowntoproceedinamoreorderlyfashionandinthissensemayrepresentanenhancementtosafety.ThenewactionstatementsareconsistentwithNUREG1431,andassuchhavebeenacceptedbytheNRC.AsstatedinNUREG1431,"...theallowedCompletionTimesarereasonable,basedonoperatingexperience,toreachtherequiredplantconditionsfromfullpowerconditionsinanorderlymannerandwithoutchallengingplantsystems."ThecreationofanewactionstatementforaccumulatorboronconcentrationbeingoutsidetheT/Slimitchangestheallowableoutagetimeforthisconditionfromonehourto72hours.AsstatedinNUREG1431,boronintheaccumulatorscontributestotheassumptionthatthecombinedECCSwaterinthepartiallyrecoveredcoreduringtheearlyrefloodingphaseofalargebreakLOCAissufficienttokeepthatportionofthecoresubcritical.Oneaccumulatorbelowtheminimumboronconcentrationlimit,however,willhavenoeffectonavailableECCSwaterandaninsignificanteffectoncoresubcriticalityduringreflood.BoilingofECCSwaterinthecoreduringrefloodconcentratesboroninthesaturatedliquidthatremainsinthecore.Inaddition,currentanalysistechniquesdemonstratethattheaccumulatorsdonotdischargefollowingalargemainsteamlinebreakforthemajorityofplants.Eveniftheydodischarge,.theirimpactisminorandnotadesignlimitingevent.Thus,the72hoursisallowedtoreturntheboronconcentrationtowithinlimits."TheminimumT/SlimitonboronconcentrationisusedinthepostLOCAboronconcentrationcalculation.Thecalculationisperformedtoassurereactorsubcriticalityina-postLOCAenvironment.OfparticularinterestisthelargebreakLOCA,sincenocreditistakenforcontrolrodassemblyinsertion.AreductionintheaccumulatorminimumboronconcentrationwouldproduceasubsequentreductionintheavailablecontainmentsumpconcentrationforpostLOCAshutdownandanincreaseinthemaximumsumppH.Themaximumboronconcentration's  
..;PDR'DOCKP93iii2050003i5PDR.
Dr.T.E.Murley2-AEP:NRC:1186 Incompliance withtherequirements of10CFR50.91(b)(1),
copiesofthisletteranditsattachments havebeentransmitted toMr.J.R.PadgettoftheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.Thisletterissubmitted pursuantto10CFR50.30(b),
and,assuch,anoathstatement isattached.
E.E.FitzpaickVicePresident drAttachments cc:A.A.BlindG.CharnoffJ.B.Martin-RegionIIINFEMSectionChiefNRCResidentInspector J.R.Padgett COUNTYOFFRANKLINE.E.Fitzpatrick, beingdulysworn,deposesandsaysthatheistheVicePresident oflicenseeIndianaMichiganPowerCompany,thathehasreadtheforgoingTECHNICAL SPECIFICATION CHANGEREQUEST:ACCUMULATORS andknowsthecontentsthereof;andthatsaidcontentsaretruetothebestofhisknowledge andbelief.Subscribed andsworntobeforemethis~~dayof19NOTARPUBLICRITA0.HILLNOTARYPUBUC.STATEOFOHIO  
'r~'ItIf.>14j1 ATTACHMENT 1TOAEP:NRC:1186 10CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICAL SPECIFICATIONS Attachment 1toAEP:NRC:1186 Page1I.DESCRIPTION OFTHECHANGESWeproposetomodifyT/S3/4.5.1(Accumulators) forUnits1and2of,theCookNuclearPlantsuchthattheT/Srequirements aremoreconsistent withthosecontained inthenewStandardT/SsforWestinghouse plantspublished bytheNRCasNUREG1431.Thespecificproposedchangesareasfollows:A.ActionStatements Aspresently written,ActionStatement (a)providesguidancetobefollowedifasingleaccumulator isinoperable, exceptasaresultofaclosedisolation valve.Thisactionstatement allowsonehourtorestoreaninoperable accumulator tooperablestatus,ortheunitmustbeplacedinMode4withinthefollowing 8hours(Unit1)or12hours(Unit2).ActionStatement (b)providestherequirements forasingleaccumulator inoperable duetoaclosedisolation valve.Inthiscase,thevalveistobeimmediately opened',ortheunitplacedinMode3withinonehourandMode4withinthenext8hours(Unit1)or12hours(Unit2).WeproposetoreplacethepresentActionStatements aandbwithnewactionstatements.
1)ActionStatement (a)providesguidancetobefollowediftheaccumulator boronconcentration isnotwithintheT/Slimits.Seventy-two hoursareallowedtorestoretheboronconcentration towithinthelimits.Iftheconcentration isnotrestoredwithinthetimelimit,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollow'ing 6hours.B.2)ActionStatement (b)coversallotherinoperabilities ofasingleaccumulator.
Withanaccumulator inoperable exceptasprovidedforinActionStatement (a),onehourisallowedtorestoretheaccumulator tooperablestatus.Iftheaccumulator isnotrestoredtooperablestatuswithinonehour,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollowing 6hours.Surveillance Requirements 1)T/S4.5.1.bcurrently requiresthattheaccumulator beverifiedoperable:
Atleastonceper31daysandwithin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolumebyverifying theboronconcentration oftheaccumulator solution.
Attachment 1toAEP:NRC:1186 Page2Weareproposing tomodifythissurveillance requirement suchthatitreadsasfollows:Atleastonceper31days,and,fortheaffectedaccumulator(s),
within6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolume(thatisnottheresultofadditionfromtherefueling waterstoragetank)byverifying theboronconcentration oftheaccumulator solution.
2)Weareproposing todeletesurveillance requirement 4.5.1.d,whichrequiresverification atleastonceper18monthsthateachaccumulator isolation valveopensautomatically uponreceiptofasafetyinjection testsignal.3)ForUnit1T/S4.5.1.a.l, weareproposing tochangetheterm"waterlevel"to"contained boratedwatervolume".C.BasesWeareproposing tomodifytheBasessectiontoreflectthechangestotheactionstatements discussed above.Thediscussion regarding actionstatements inthecurrentBasesreflectstreatment ofaclosedisolation valveasaspecialcondition ofinoperability requiring immediate action.Weareproposing tomodifytheBasesdiscussion onactionstatements toincludetheBasesmaterialfortheactionstatements fromNUREG1431.II.REASONSANDJUSTIFICATION FORPROPOSEDCHANGESIngeneral,theproposedchangesareintendedtomaketheT/Ssmoreconsistent withthenewStandardT/Sspublished asNUREG1431.Theproposedchangeseliminate inconsistencies inthepresentT/Ss,relaxcertainrequirements whereappropriate, andeliminate unnecessary surveillance requirements.
ActionStatements Aninconsistency inthepresentT/Shasbeeneliminated withthenewproposedactionstatements.
T/S3/4.5.1isapplicable inModes1and2,andMode3withpressurizer pressureabove1,000psig.ThepresentActionStatements aandb,however,requiretheunittoeventually beplacedinMode4withtheLimitingConditions forOperation (LCOs)notmet.Theproposedactionstatements correctthisinconsistency byhavingtheterminalpointoftheshutdownbeMode3withpressurizer pressurebelow1,000psig.Thenewactionstatements retaintheonehourtimelimitforrestoration ofanaccumulator tooperablestatusformostinoperability conditions.
However,thenewactionstatements allowslightlymoretimeuntiltheunitmustbeshutdownduetoaninoperable accumulator.
Attachment 1toAEP:NRC:1186 Page3Forexample,currently, withanaccumulator inoperable duetocausesotherthanaclosedisolation valve,onehourisallowedtorestoreoperability ortheunitmustbeplacedinMode4within8hours(Unit1).Withthenewactionstatements, 12hoursisallowed(beyondtheinitialonehour)toreachtheterminalpoint,whichisMode3withpressurizer pressurebelow1,000psig.Therequirement inthepresentT/Sstoimmediately openaclosedisolation valveorplacetheplantinMode3withinonehourhasbeenremoved.Withtheproposedactionstatements, aclosedisolation valvewouldbetreatedthesameasotherinoperability conditions fortheaccumulators.
Onehourwouldbepermitted toopenthevalve,ortheunitmustbeplacedinMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollowing 6hours.Althoughlessconservative, thischangeallowsashutdowntoproceedinamoreorderlyfashionandinthissensemayrepresent anenhancement tosafety.Thenewactionstatements areconsistent withNUREG1431,andassuchhavebeenacceptedbytheNRC.AsstatedinNUREG1431,"...theallowedCompletion Timesarereasonable, basedonoperating experience, toreachtherequiredplantconditions fromfullpowerconditions inanorderlymannerandwithoutchallenging plantsystems."
Thecreationofanewactionstatement foraccumulator boronconcentration beingoutsidetheT/Slimitchangestheallowable outagetimeforthiscondition fromonehourto72hours.AsstatedinNUREG1431,boronintheaccumulators contributes totheassumption thatthecombinedECCSwaterinthepartially recovered coreduringtheearlyreflooding phaseofalargebreakLOCAissufficient tokeepthatportionofthecoresubcritical.
Oneaccumulator belowtheminimumboronconcentration limit,however,willhavenoeffectonavailable ECCSwaterandaninsignificant effectoncoresubcriticality duringreflood.BoilingofECCSwaterinthecoreduringrefloodconcentrates boroninthesaturated liquidthatremainsinthecore.Inaddition, currentanalysistechniques demonstrate thattheaccumulators donotdischarge following alargemainsteamlinebreakforthemajorityofplants.Eveniftheydodischarge,
.theirimpactisminorandnotadesignlimitingevent.Thus,the72hoursisallowedtoreturntheboronconcentration towithinlimits."TheminimumT/Slimitonboronconcentration isusedinthepostLOCAboronconcentration calculation.
Thecalculation isperformed toassurereactorsubcriticality ina-postLOCAenvironment.
Ofparticular interestisthelargebreakLOCA,sincenocreditistakenforcontrolrodassemblyinsertion.
Areduction intheaccumulator minimumboronconcentration wouldproduceasubsequent reduction intheavailable containment sumpconcentration forpostLOCAshutdownandanincreaseinthemaximumsumppH.Themaximumboronconcentration's  
~I~
~I~
Attachment1toAEP:NRC:1186Page4usedindeterminingthecoldlegtohotlegrecirculationinjectionswitchovertimeandminimumsumppH.AlthoughtheaffectoftheaboveitemsisnotspecificallyaddressedintheNUREG1431justificationofthe72houractionstatementforboronconcentration,itisnotedthatduetotherelativelysmallsizeofanaccumulatorcomparedtoothersourcesofwaterinthecontainmentsumppost-LOCA(approximately7,000gallonsforanaccumulatorversusapproximately350,000gallonsfortheRWSTandapproximately300,000gallonsofmeltedboratedice),theimpactofboronconcentrationbeingoutsideoftheT/SonsumppHoronlongtermsubcriticalitywouldbeexpectedtobesmall.B.SurveillanceRequirementsT/S4.5.1.dWeareproposingtodeleteT/S4.5.1.d.Thissurveillancerequirementrequiresverificationatleastonceper18monthsthateachaccumulatorisolationvalveopensautomaticallyuponreceiptofasafetyinjectiontestsignal.ThechangeisconsistentwithNUREG1431,and,assuch,hasbeenacceptedbytheNRC.T/S4.5.1.a.2requiresverificationevery12hoursthateachaccumulatorisolationvalveisopen.Additionally,T/S4.5.1.crequiresverificationevery31daysthatpowertotheisolationvalveoperatorisdisconnectedbyremovalofthebreakerfromthecircuit.Thus,theT/Scontainsadequatecontrolstoensurethattheaccumulatorisolationvalvesareopenintherequiredmodes,andverificationofautomaticopeningcapability,althoughconservative,isredundant.ThisredundancywascorrectedinNUREG1431byeliminationoftherequirementtoverifyautomaticopeningoftheaccumulatorisolationvalves.2.T/S4.5.1.bAspresentlywritten,T/S4.5.1.brequiresverificationofaccumulatorboronconcentrationevery31days,andwi.thin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xofthetankvolume.Thefirstchangeweareproposingtothissurveillancerequirementistoexplicitlystatethattheboronconcentrationverificationfollowingasolutionadditionisonlyrequiredfortheaffectedaccumulator.AlthoughthisisimplicitinthepresentT/S,the,changeaddsclaritytotheT/SbyremovingvaguenessfromtheT/SandmakesthewordingmoreconsistentwiththeNUREG1431T/Ss.ThesecondchangeistoexcludevolumeadditionsfromtheRWSTfromthosevolumeadditionsrequiringverificationofaccumulatorboronconcentration,providedtheRWSThasnotbeendilutedsinceverifyingthattheRWSTboronconcentrationisequaltoorgreaterthantheaccumulatorboronconcentrationlimit.T/Ss Attachment1toAEP:NRC:1186Page53/4.1.2.8(BoratedWaterSources-Operations)and3/4.5.5(RefuelingWaterStorageTank)requireanidenticalboronconcentrationfortheRWSTasfortheaccumulatorsduringoperation.AsstatedinNUREG1431,"Ztisnotnecessarytoverifyboronconcentrationiftheaddedwaterinventoryisfromtherefuelingwaterstoragetank(RWST),becausethewatercontainedintheRWSTiswithintheaccumulatorboronconcentrationrequirements.ThisisconsistentwiththerecommendationofNUREG-1366."3~T/S4.5.1.aWeareproposinganeditorialchangetoUnit1T/s4.5.1.a.l.Specifically,weareproposingtochangetheterm"waterlevel"to"containedboratedwatervolume"inordertoachieveconsistencywiththeUnit2T/SsandwiththewordinginNUREG1431.TheproposedchangestothissectionareconsistentwithNUREG1431,andassuchhavealreadybeenacceptedbytheNRC.CiBasesChangestotheBaseswererequiredtoreflecttherevisedactionstatements.TheBasesdiscussionontheactionstatementsisconsistentwithNUREG1431.ZIZZ10CFR50.92CRITERIAPer10CFR50.92,aproposedchangedoesnotinvolveasignificanthazardsconsiderationifthechangedoesnots1~involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,2~createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated,or3~involveasignificantreductioninamarginofsafety.
Attachment 1toAEP:NRC:1186 Page4usedindetermining thecoldlegtohotlegrecirculation injection switchover timeandminimumsumppH.Althoughtheaffectoftheaboveitemsisnotspecifically addressed intheNUREG1431justification ofthe72houractionstatement forboronconcentration, itisnotedthatduetotherelatively smallsizeofanaccumulator comparedtoothersourcesofwaterinthecontainment sumppost-LOCA (approximately 7,000gallonsforanaccumulator versusapproximately 350,000gallonsfortheRWSTandapproximately 300,000gallonsofmeltedboratedice),theimpactofboronconcentration beingoutsideoftheT/SonsumppHoronlongtermsubcriticality wouldbeexpectedtobesmall.B.Surveillance Requirements T/S4.5.1.dWeareproposing todeleteT/S4.5.1.d.Thissurveillance requirement requiresverification atleastonceper18monthsthateachaccumulator isolation valveopensautomatically uponreceiptofasafetyinjection testsignal.Thechangeisconsistent withNUREG1431,and,assuch,hasbeenacceptedbytheNRC.T/S4.5.1.a.2 requiresverification every12hoursthateachaccumulator isolation valveisopen.Additionally, T/S4.5.1.crequiresverification every31daysthatpowertotheisolation valveoperatorisdisconnected byremovalofthebreakerfromthecircuit.Thus,theT/Scontainsadequatecontrolstoensurethattheaccumulator isolation valvesareopenintherequiredmodes,andverification ofautomatic openingcapability, althoughconservative, isredundant.
I Attachment1toAEP:NRC:1186Page6Criterion1Thelimitingconditionsforoperationinvolvingtheaccumulatorarenotalteredbythisproposedchange.Thesurve'illancerequirementsarelessenedsomewhatbytheproposedchanges.Therequirementtotesttheautomaticactuationoftheaccumulatorisolationvalveswasredundanttoexistingsurveillancerequirementsthatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirementtotesttheaccumulatorboronconcentrationfollowinga1Xorgreatersolutionvolumeincreas'ewasmodifiedtoexcludevolumeadditionsfromtheRWST,since,perT/Ss,theRWSTboronconcentrationrequirementsduringoperationareidenticaltothosefortheaccumulator.TheproposedchangesareconsistentwithNUREG1431,and,assuch,havealreadybeenfoundacceptablebytheNRC.Therefore,itisconcludedthattheproposedamendmentdoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated.Criterion2Nochangestothelimitingconditionsforoperationoftheaccumulatorsareproposedaspartofthisamendmentrequest.Theproposedchangesdonotinvolveanyphysicalchangestotheplantorchangestoplantoperations.Thus,theproposedchangesdonotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Criterion3Thelimitingconditionsforoperationinvolvingtheaccumulatorarenotalteredbythisproposedchange.Thesurveillancerequirementsarelessenedsomewhatbytheproposedchanges.Therequirementtotesttheautomaticactuationoftheaccumulatorisolationvalveswasredundanttoexistingsurveillancerequirementsthatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirementtotesttheaccumulatorboronconcentrationfollowinga1XorgreatersolutionvolumeincreasewasmodifiedtoexcludevolumeadditionsfromtheRWST,since,perT/Ss,theRWSTboronconcentrationrequirementsduringoperationareidenticaltothosefortheaccumulator.AlltheproposedchangesareconsistentwithNUREG1431,and,assuch,havealreadybeenfoundacceptablebytheNRC.Therefore,itisconcludedthattheproposedchangesdonotinvolveareductioninamarginofsafety.Lastly,wenotethattheNRChasprovidedguidanceconcerningthedeterminationofsignificanthazardsconsiderationbyprovidingcertainexamples-(48FR14870)ofamendmentsconsiderednotlikelytoinvolvesignificanthazardsconsideration.Thesixthoftheseexamplesreferstochangesthatmayresultinsomeincreasetotheprobabilityorconsequencesofapreviouslyevaluatedaccident,buttheresultsofwhicharewithinacceptablelimits.Asdiscussedabove,theproposedchangesareconsistentwithchangesfoundacceptablebytheNRCinNUREG1431.Therefore,we g~
Thisredundancy wascorrected inNUREG1431byelimination oftherequirement toverifyautomatic openingoftheaccumulator isolation valves.2.T/S4.5.1.bAspresently written,T/S4.5.1.brequiresverification ofaccumulator boronconcentration every31days,andwi.thin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xofthetankvolume.Thefirstchangeweareproposing tothissurveillance requirement istoexplicitly statethattheboronconcentration verification following asolutionadditionisonlyrequiredfortheaffectedaccumulator.
Attachment1toAEP:NRC:1186Page7concludethattheexamplecitedisapplicableandthatthechangeshouldnotinvolvesignificanthazardsconsideration.}}
AlthoughthisisimplicitinthepresentT/S,the,changeaddsclaritytotheT/Sbyremovingvagueness fromtheT/Sandmakesthewordingmoreconsistent withtheNUREG1431T/Ss.Thesecondchangeistoexcludevolumeadditions fromtheRWSTfromthosevolumeadditions requiring verification ofaccumulator boronconcentration, providedtheRWSThasnotbeendilutedsinceverifying thattheRWSTboronconcentration isequaltoorgreaterthantheaccumulator boronconcentration limit.T/Ss Attachment 1toAEP:NRC:1186 Page53/4.1.2.8 (BoratedWaterSources-Operations) and3/4.5.5(Refueling WaterStorageTank)requireanidentical boronconcentration fortheRWSTasfortheaccumulators duringoperation.
AsstatedinNUREG1431,"Ztisnotnecessary toverifyboronconcentration iftheaddedwaterinventory isfromtherefueling waterstoragetank(RWST),becausethewatercontained intheRWSTiswithintheaccumulator boronconcentration requirements.
Thisisconsistent withtherecommendation ofNUREG-1366."
3~T/S4.5.1.aWeareproposing aneditorial changetoUnit1T/s4.5.1.a.l.
Specifically, weareproposing tochangetheterm"waterlevel"to"contained boratedwatervolume"inordertoachieveconsistency withtheUnit2T/SsandwiththewordinginNUREG1431.Theproposedchangestothissectionareconsistent withNUREG1431,andassuchhavealreadybeenacceptedbytheNRC.CiBasesChangestotheBaseswererequiredtoreflecttherevisedactionstatements.
TheBasesdiscussion ontheactionstatements isconsistent withNUREG1431.ZIZZ10CFR50.92CRITERIAPer10CFR50.92,aproposedchangedoesnotinvolveasignificant hazardsconsideration ifthechangedoesnots1~involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, 2~createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated, or3~involveasignificant reduction inamarginofsafety.
I Attachment 1toAEP:NRC:1186 Page6Criterion 1Thelimitingconditions foroperation involving theaccumulator arenotalteredbythisproposedchange.Thesurve'illance requirements arelessenedsomewhatbytheproposedchanges.Therequirement totesttheautomatic actuation oftheaccumulator isolation valveswasredundant toexistingsurveillance requirements thatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirement totesttheaccumulator boronconcentration following a1Xorgreatersolutionvolumeincreas'e wasmodifiedtoexcludevolumeadditions fromtheRWST,since,perT/Ss,theRWSTboronconcentration requirements duringoperation areidentical tothosefortheaccumulator.
Theproposedchangesareconsistent withNUREG1431,and,assuch,havealreadybeenfoundacceptable bytheNRC.Therefore, itisconcluded thattheproposedamendment doesnotinvolveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated.
Criterion 2Nochangestothelimitingconditions foroperation oftheaccumulators areproposedaspartofthisamendment request.Theproposedchangesdonotinvolveanyphysicalchangestotheplantorchangestoplantoperations.
Thus,theproposedchangesdonotcreatethepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated.
Criterion 3Thelimitingconditions foroperation involving theaccumulator arenotalteredbythisproposedchange.Thesurveillance requirements arelessenedsomewhatbytheproposedchanges.Therequirement totesttheautomatic actuation oftheaccumulator isolation valveswasredundant toexistingsurveillance requirements thatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirement totesttheaccumulator boronconcentration following a1Xorgreatersolutionvolumeincreasewasmodifiedtoexcludevolumeadditions fromtheRWST,since,perT/Ss,theRWSTboronconcentration requirements duringoperation areidentical tothosefortheaccumulator.
Alltheproposedchangesareconsistent withNUREG1431,and,assuch,havealreadybeenfoundacceptable bytheNRC.Therefore, itisconcluded thattheproposedchangesdonotinvolveareduction inamarginofsafety.Lastly,wenotethattheNRChasprovidedguidanceconcerning thedetermination ofsignificant hazardsconsideration byproviding certainexamples-(48FR14870)ofamendments considered notlikelytoinvolvesignificant hazardsconsideration.
Thesixthoftheseexamplesreferstochangesthatmayresultinsomeincreasetotheprobability orconsequences ofapreviously evaluated
: accident, buttheresultsofwhicharewithinacceptable limits.Asdiscussed above,theproposedchangesareconsistent withchangesfoundacceptable bytheNRCinNUREG1431.Therefore, we g~
Attachment 1toAEP:NRC:1186 Page7concludethattheexamplecitedisapplicable andthatthechangeshouldnotinvolvesignificant hazardsconsideration.}}

Revision as of 07:16, 29 June 2018

Application for Amends to Licenses DPR-58 & DPR-74,modifying TS 3/4.5.1, Accumulators Such That TS More Consistent W/ New STS for Westinghouse Plants,Published by NRC as NUREG-1431
ML17331B064
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 11/12/1993
From: FITZPATRICK E
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: MURLEY T E
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
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Text

ACCEIEEDDOCUMENTDISUTIONSYSTEMREGU.LORYINFORMATION DISTRIBUT SYSTEM(RIDS)ACCESSION NBR:9311190285 DOC.DATE:

93/11/12NOTARIZED:

YESDOCKETFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATION FITZPATRICK,E.

IndianaMichiganPowerCo.(formerly Indiana&MichiganEleRECIP.NAME RECIPIENT AFFILIATION MURLEY,T.E.

DocumentControlBranch(Document ControlDesk)

SUBJECT:

Application foramendstolicensesDPR-58&DPR-74,modifying TS3/4.5.1,"Accumulators" suchthatTSmoreconsistent w/newSTSfor,Westinghouse plants,published byNRCasNUREG-1431.

DISTRIBUTION CODE:AOOIDCOPIESRECEIVED:LTR gENCJSIZE:TITLE:ORSubmittal:

GeneralDistribution ID5NOTES:RECIPIENT IDCODE/NAME PD3-1LAWETZEL,BCOPIESLTTRENCL1122RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL11D(DINTERNAL:

NRR/DE/EELB NRR/DRCH/HICB NRR/DSSA/SRXB

-C/MDCBREGFILE01EXTERNAL:

NRCPDR111111101111NRR/DORS/OTSB NRR/DSSA/SPLB NUDOCS-ABSTRACT OGC/HDS2NSIC1111111011DDNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.504-2065)

TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEEDtDTOTALNUMBEROFCOPIESREQUIRED:

LTTR15ENCL13 IndianaMichi~PowerCompa~P.O.Box16631Columbus, OH43216AEP:NRC:1186 DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74TECHNICAL SPECIFICATION CHANGEREQUEST:ACCUMULATORS U.S.NuclearRegulatory Commission DocumentControlDeskWashington, D.C.20555Attn:T.E.MurleyNovember12,1993

DearDr.Murley:

Thisletteranditsattachments constitute anapplication foramendment totheTechnical Specifications (T/Ss)fortheDonaldC.CookNuclearPlantUnits1and2.TheproposedchangesmodifyT/S3/4.5.1(Accumulators) suchthattheT/Sismoreconsistent withthenewStandardT/SsforWestinghouse plants,published bytheNRCasNUREG1431.Associated changestothecorresponding Basessectionarealsoproposed.

Attachment 1providesadetaileddescription oftheproposedchanges,thejustification forthechanges,andourproposeddetermination ofnosignificant hazardsconsideration performed pursuantto10CFR50.92.Attachment 2containstheexistingT/Spagesmarkedtoreflecttheproposedchange,Attachment 3containstheproposed, revisedT/Spages.Thissubmittal proposeschangestoUnit2T/Spage3/45-2.Anadditional changetothispagewasproposedinoursubmittal AEP:NRC:1181, datedApril16,1993.Webelievethattheproposedchangewillnotresultin1)asignificant changeinthetypesofeffluents orasignificant increaseintheamountofanyeffluents thatmaybereleasedoffsite,or2)asignificant increaseinindividual orcumulative occupational radiation exposure.

TheproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andbytheNuclearSafetyandDesignReviewCommittee.

93i1190285

..;PDR'DOCKP93iii2050003i5PDR.

Dr.T.E.Murley2-AEP:NRC:1186 Incompliance withtherequirements of10CFR50.91(b)(1),

copiesofthisletteranditsattachments havebeentransmitted toMr.J.R.PadgettoftheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.Thisletterissubmitted pursuantto10CFR50.30(b),

and,assuch,anoathstatement isattached.

E.E.FitzpaickVicePresident drAttachments cc:A.A.BlindG.CharnoffJ.B.Martin-RegionIIINFEMSectionChiefNRCResidentInspector J.R.Padgett COUNTYOFFRANKLINE.E.Fitzpatrick, beingdulysworn,deposesandsaysthatheistheVicePresident oflicenseeIndianaMichiganPowerCompany,thathehasreadtheforgoingTECHNICAL SPECIFICATION CHANGEREQUEST:ACCUMULATORS andknowsthecontentsthereof;andthatsaidcontentsaretruetothebestofhisknowledge andbelief.Subscribed andsworntobeforemethis~~dayof19NOTARPUBLICRITA0.HILLNOTARYPUBUC.STATEOFOHIO

'r~'ItIf.>14j1 ATTACHMENT 1TOAEP:NRC:1186 10CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICAL SPECIFICATIONS Attachment 1toAEP:NRC:1186 Page1I.DESCRIPTION OFTHECHANGESWeproposetomodifyT/S3/4.5.1(Accumulators) forUnits1and2of,theCookNuclearPlantsuchthattheT/Srequirements aremoreconsistent withthosecontained inthenewStandardT/SsforWestinghouse plantspublished bytheNRCasNUREG1431.Thespecificproposedchangesareasfollows:A.ActionStatements Aspresently written,ActionStatement (a)providesguidancetobefollowedifasingleaccumulator isinoperable, exceptasaresultofaclosedisolation valve.Thisactionstatement allowsonehourtorestoreaninoperable accumulator tooperablestatus,ortheunitmustbeplacedinMode4withinthefollowing 8hours(Unit1)or12hours(Unit2).ActionStatement (b)providestherequirements forasingleaccumulator inoperable duetoaclosedisolation valve.Inthiscase,thevalveistobeimmediately opened',ortheunitplacedinMode3withinonehourandMode4withinthenext8hours(Unit1)or12hours(Unit2).WeproposetoreplacethepresentActionStatements aandbwithnewactionstatements.

1)ActionStatement (a)providesguidancetobefollowediftheaccumulator boronconcentration isnotwithintheT/Slimits.Seventy-two hoursareallowedtorestoretheboronconcentration towithinthelimits.Iftheconcentration isnotrestoredwithinthetimelimit,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollow'ing 6hours.B.2)ActionStatement (b)coversallotherinoperabilities ofasingleaccumulator.

Withanaccumulator inoperable exceptasprovidedforinActionStatement (a),onehourisallowedtorestoretheaccumulator tooperablestatus.Iftheaccumulator isnotrestoredtooperablestatuswithinonehour,theunitmustbeplacedinatleastMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollowing 6hours.Surveillance Requirements 1)T/S4.5.1.bcurrently requiresthattheaccumulator beverifiedoperable:

Atleastonceper31daysandwithin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolumebyverifying theboronconcentration oftheaccumulator solution.

Attachment 1toAEP:NRC:1186 Page2Weareproposing tomodifythissurveillance requirement suchthatitreadsasfollows:Atleastonceper31days,and,fortheaffectedaccumulator(s),

within6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xoftankvolume(thatisnottheresultofadditionfromtherefueling waterstoragetank)byverifying theboronconcentration oftheaccumulator solution.

2)Weareproposing todeletesurveillance requirement 4.5.1.d,whichrequiresverification atleastonceper18monthsthateachaccumulator isolation valveopensautomatically uponreceiptofasafetyinjection testsignal.3)ForUnit1T/S4.5.1.a.l, weareproposing tochangetheterm"waterlevel"to"contained boratedwatervolume".C.BasesWeareproposing tomodifytheBasessectiontoreflectthechangestotheactionstatements discussed above.Thediscussion regarding actionstatements inthecurrentBasesreflectstreatment ofaclosedisolation valveasaspecialcondition ofinoperability requiring immediate action.Weareproposing tomodifytheBasesdiscussion onactionstatements toincludetheBasesmaterialfortheactionstatements fromNUREG1431.II.REASONSANDJUSTIFICATION FORPROPOSEDCHANGESIngeneral,theproposedchangesareintendedtomaketheT/Ssmoreconsistent withthenewStandardT/Sspublished asNUREG1431.Theproposedchangeseliminate inconsistencies inthepresentT/Ss,relaxcertainrequirements whereappropriate, andeliminate unnecessary surveillance requirements.

ActionStatements Aninconsistency inthepresentT/Shasbeeneliminated withthenewproposedactionstatements.

T/S3/4.5.1isapplicable inModes1and2,andMode3withpressurizer pressureabove1,000psig.ThepresentActionStatements aandb,however,requiretheunittoeventually beplacedinMode4withtheLimitingConditions forOperation (LCOs)notmet.Theproposedactionstatements correctthisinconsistency byhavingtheterminalpointoftheshutdownbeMode3withpressurizer pressurebelow1,000psig.Thenewactionstatements retaintheonehourtimelimitforrestoration ofanaccumulator tooperablestatusformostinoperability conditions.

However,thenewactionstatements allowslightlymoretimeuntiltheunitmustbeshutdownduetoaninoperable accumulator.

Attachment 1toAEP:NRC:1186 Page3Forexample,currently, withanaccumulator inoperable duetocausesotherthanaclosedisolation valve,onehourisallowedtorestoreoperability ortheunitmustbeplacedinMode4within8hours(Unit1).Withthenewactionstatements, 12hoursisallowed(beyondtheinitialonehour)toreachtheterminalpoint,whichisMode3withpressurizer pressurebelow1,000psig.Therequirement inthepresentT/Sstoimmediately openaclosedisolation valveorplacetheplantinMode3withinonehourhasbeenremoved.Withtheproposedactionstatements, aclosedisolation valvewouldbetreatedthesameasotherinoperability conditions fortheaccumulators.

Onehourwouldbepermitted toopenthevalve,ortheunitmustbeplacedinMode3withinthenext6hoursandpressurizer pressurereducedbelow1,000psigwithinthefollowing 6hours.Althoughlessconservative, thischangeallowsashutdowntoproceedinamoreorderlyfashionandinthissensemayrepresent anenhancement tosafety.Thenewactionstatements areconsistent withNUREG1431,andassuchhavebeenacceptedbytheNRC.AsstatedinNUREG1431,"...theallowedCompletion Timesarereasonable, basedonoperating experience, toreachtherequiredplantconditions fromfullpowerconditions inanorderlymannerandwithoutchallenging plantsystems."

Thecreationofanewactionstatement foraccumulator boronconcentration beingoutsidetheT/Slimitchangestheallowable outagetimeforthiscondition fromonehourto72hours.AsstatedinNUREG1431,boronintheaccumulators contributes totheassumption thatthecombinedECCSwaterinthepartially recovered coreduringtheearlyreflooding phaseofalargebreakLOCAissufficient tokeepthatportionofthecoresubcritical.

Oneaccumulator belowtheminimumboronconcentration limit,however,willhavenoeffectonavailable ECCSwaterandaninsignificant effectoncoresubcriticality duringreflood.BoilingofECCSwaterinthecoreduringrefloodconcentrates boroninthesaturated liquidthatremainsinthecore.Inaddition, currentanalysistechniques demonstrate thattheaccumulators donotdischarge following alargemainsteamlinebreakforthemajorityofplants.Eveniftheydodischarge,

.theirimpactisminorandnotadesignlimitingevent.Thus,the72hoursisallowedtoreturntheboronconcentration towithinlimits."TheminimumT/Slimitonboronconcentration isusedinthepostLOCAboronconcentration calculation.

Thecalculation isperformed toassurereactorsubcriticality ina-postLOCAenvironment.

Ofparticular interestisthelargebreakLOCA,sincenocreditistakenforcontrolrodassemblyinsertion.

Areduction intheaccumulator minimumboronconcentration wouldproduceasubsequent reduction intheavailable containment sumpconcentration forpostLOCAshutdownandanincreaseinthemaximumsumppH.Themaximumboronconcentration's

~I~

Attachment 1toAEP:NRC:1186 Page4usedindetermining thecoldlegtohotlegrecirculation injection switchover timeandminimumsumppH.Althoughtheaffectoftheaboveitemsisnotspecifically addressed intheNUREG1431justification ofthe72houractionstatement forboronconcentration, itisnotedthatduetotherelatively smallsizeofanaccumulator comparedtoothersourcesofwaterinthecontainment sumppost-LOCA (approximately 7,000gallonsforanaccumulator versusapproximately 350,000gallonsfortheRWSTandapproximately 300,000gallonsofmeltedboratedice),theimpactofboronconcentration beingoutsideoftheT/SonsumppHoronlongtermsubcriticality wouldbeexpectedtobesmall.B.Surveillance Requirements T/S4.5.1.dWeareproposing todeleteT/S4.5.1.d.Thissurveillance requirement requiresverification atleastonceper18monthsthateachaccumulator isolation valveopensautomatically uponreceiptofasafetyinjection testsignal.Thechangeisconsistent withNUREG1431,and,assuch,hasbeenacceptedbytheNRC.T/S4.5.1.a.2 requiresverification every12hoursthateachaccumulator isolation valveisopen.Additionally, T/S4.5.1.crequiresverification every31daysthatpowertotheisolation valveoperatorisdisconnected byremovalofthebreakerfromthecircuit.Thus,theT/Scontainsadequatecontrolstoensurethattheaccumulator isolation valvesareopenintherequiredmodes,andverification ofautomatic openingcapability, althoughconservative, isredundant.

Thisredundancy wascorrected inNUREG1431byelimination oftherequirement toverifyautomatic openingoftheaccumulator isolation valves.2.T/S4.5.1.bAspresently written,T/S4.5.1.brequiresverification ofaccumulator boronconcentration every31days,andwi.thin6hoursaftereachsolutionvolumeincreaseofgreaterthanorequalto1Xofthetankvolume.Thefirstchangeweareproposing tothissurveillance requirement istoexplicitly statethattheboronconcentration verification following asolutionadditionisonlyrequiredfortheaffectedaccumulator.

AlthoughthisisimplicitinthepresentT/S,the,changeaddsclaritytotheT/Sbyremovingvagueness fromtheT/Sandmakesthewordingmoreconsistent withtheNUREG1431T/Ss.Thesecondchangeistoexcludevolumeadditions fromtheRWSTfromthosevolumeadditions requiring verification ofaccumulator boronconcentration, providedtheRWSThasnotbeendilutedsinceverifying thattheRWSTboronconcentration isequaltoorgreaterthantheaccumulator boronconcentration limit.T/Ss Attachment 1toAEP:NRC:1186 Page53/4.1.2.8 (BoratedWaterSources-Operations) and3/4.5.5(Refueling WaterStorageTank)requireanidentical boronconcentration fortheRWSTasfortheaccumulators duringoperation.

AsstatedinNUREG1431,"Ztisnotnecessary toverifyboronconcentration iftheaddedwaterinventory isfromtherefueling waterstoragetank(RWST),becausethewatercontained intheRWSTiswithintheaccumulator boronconcentration requirements.

Thisisconsistent withtherecommendation ofNUREG-1366."

3~T/S4.5.1.aWeareproposing aneditorial changetoUnit1T/s4.5.1.a.l.

Specifically, weareproposing tochangetheterm"waterlevel"to"contained boratedwatervolume"inordertoachieveconsistency withtheUnit2T/SsandwiththewordinginNUREG1431.Theproposedchangestothissectionareconsistent withNUREG1431,andassuchhavealreadybeenacceptedbytheNRC.CiBasesChangestotheBaseswererequiredtoreflecttherevisedactionstatements.

TheBasesdiscussion ontheactionstatements isconsistent withNUREG1431.ZIZZ10CFR50.92CRITERIAPer10CFR50.92,aproposedchangedoesnotinvolveasignificant hazardsconsideration ifthechangedoesnots1~involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, 2~createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated, or3~involveasignificant reduction inamarginofsafety.

I Attachment 1toAEP:NRC:1186 Page6Criterion 1Thelimitingconditions foroperation involving theaccumulator arenotalteredbythisproposedchange.Thesurve'illance requirements arelessenedsomewhatbytheproposedchanges.Therequirement totesttheautomatic actuation oftheaccumulator isolation valveswasredundant toexistingsurveillance requirements thatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirement totesttheaccumulator boronconcentration following a1Xorgreatersolutionvolumeincreas'e wasmodifiedtoexcludevolumeadditions fromtheRWST,since,perT/Ss,theRWSTboronconcentration requirements duringoperation areidentical tothosefortheaccumulator.

Theproposedchangesareconsistent withNUREG1431,and,assuch,havealreadybeenfoundacceptable bytheNRC.Therefore, itisconcluded thattheproposedamendment doesnotinvolveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated.

Criterion 2Nochangestothelimitingconditions foroperation oftheaccumulators areproposedaspartofthisamendment request.Theproposedchangesdonotinvolveanyphysicalchangestotheplantorchangestoplantoperations.

Thus,theproposedchangesdonotcreatethepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated.

Criterion 3Thelimitingconditions foroperation involving theaccumulator arenotalteredbythisproposedchange.Thesurveillance requirements arelessenedsomewhatbytheproposedchanges.Therequirement totesttheautomatic actuation oftheaccumulator isolation valveswasredundant toexistingsurveillance requirements thatrequiredthevalvestobeverifiedopenandwithpowerremoved.Therequirement totesttheaccumulator boronconcentration following a1Xorgreatersolutionvolumeincreasewasmodifiedtoexcludevolumeadditions fromtheRWST,since,perT/Ss,theRWSTboronconcentration requirements duringoperation areidentical tothosefortheaccumulator.

Alltheproposedchangesareconsistent withNUREG1431,and,assuch,havealreadybeenfoundacceptable bytheNRC.Therefore, itisconcluded thattheproposedchangesdonotinvolveareduction inamarginofsafety.Lastly,wenotethattheNRChasprovidedguidanceconcerning thedetermination ofsignificant hazardsconsideration byproviding certainexamples-(48FR14870)ofamendments considered notlikelytoinvolvesignificant hazardsconsideration.

Thesixthoftheseexamplesreferstochangesthatmayresultinsomeincreasetotheprobability orconsequences ofapreviously evaluated

accident, buttheresultsofwhicharewithinacceptable limits.Asdiscussed above,theproposedchangesareconsistent withchangesfoundacceptable bytheNRCinNUREG1431.Therefore, we g~

Attachment 1toAEP:NRC:1186 Page7concludethattheexamplecitedisapplicable andthatthechangeshouldnotinvolvesignificant hazardsconsideration.

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