ML17321B033

Application for Amends to Licenses DPR-58 & DPR-74, Authorizing Extension of 72 H Time Limit for Loop Inoperability When Essential Svc Water Pump Out of Svc for Replacement or Repair.Fee Paid

ML17321B033
Person / Time
Site:	Cook
Issue date:	01/17/1986
From:	ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	DENTON H R Office of Nuclear Reactor Regulation
Shared Package
ML17321B034	List: ML17321B033 ML17321B035
References
AEP:NRC:0972, AEP:NRC:972, NUDOCS 8601220482
Download: ML17321B033 (10)

Text

'j":.;':,',REGULATLR'YQFDRYiATjDNiDISTRi'juVZDN,SS=-S'(R'iDS).il4l-li.&a4l-'"':I.'llFACIL:50-315DonaldC.CookNuclearPoeerPlant>UnitiiIndiana50500031550-316DonaldC.CookNuclearPowerPlantiUnit2iIndiana505000316AUTH.NAMEAUTHORAFFILIATIONALEXICH,M.P.Indiana5MichiganElectricCo.RECIP.NAMERECIPIENlAFFILIATIONDENTON>H.R;OfficeofNuclearReactorRegulationiDirector(post851125SUHJECT:ApplicationforamendstoLicensesDPR-588cDPR-74iauthorizingextensionof72htimelimitforloopinoperabilitywhenessentialsvceaterpumpoutofsvcforreplacementorrepair.Fee.paid.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES:OL:10/25/74OL:12/23/720500031505QOQ316RECIPIENT'DCODE/NAMEPWR-AADTSPWR-AEBPWR-AFOBPWR-APSHIATERNAL:ACRS09ELD/HDS3BRO/RRAHEGFIL04COPIESLTTRENCL101111116610111RECIPIENTIDCODE/NAMEPWR-*PD4PD01PWR-AEICBBWIGGINGTONiDPWR-ARSHADM/LFMBNRR/DHFT/TSCHNRR/ORASRGN3COPIESLTTRENCL5511111110111011EXTERNAL:24XLPDRNSIC0305112211EGhGHRUBKEiSNRCPDR021111TOTALNUMBEROFCOPIEBREQUIRED:LTTR31ENCL27 l('MIXR)5:.'PhGLTVGZRTP.LHMOiiTAi""iJ-,!')'!'AA~Vc.'-l!i'lrillIIi1p'F"It.,ahl'IIV'I!4'llVtAJ'IIQttg'I,4PftIIIJ'$<<,"CQd't((.JV~'tii'((iiE,<<~(tI,ti<<~ICPS"<4I(',!,.<<PP1VIf'Igt1Gill,r,~'PI'",,"~y.E'jA"<<1fE-J11~,iil<

A."gg'E'tl~I,I~1-VL1(t')= INDIANA8MICHIGANELECTRICCOMPANYP,O,BOX16631COLUMBUS,OHIO43216January17,1986AEP:NRC:0972DonaldC.CookNuclearPlantUnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74TECHNICALSPECIFICATIONCHANGEREQUEST:ESSENTIALSERVICEWATERPUMPINOPERABILITYTIMELIMITMr.HaroldR.DentonOfficeofNuclearReactorRegulationU.S.NuclearRegulatoryCommissionWashington,DC20555

DearMr.Denton:

ThisletteranditsattachmentsconstituteanapplicationforamendmenttotheTechnicalSpecificationsfortheDonaldC.CookNuclearPlantUnitNos.1and2.Werequestthatthisapplicationbeexpeditedtoavoidthepossibilityofanunwarrantedunitshutdown.Specifically,wearerequestingthatthe72-hourlimitforloopinoperabilitybeextendedwhenanEssentialServiceWater(ESW)pumpisoutofserviceforrepairorreplacement.Asacompensatorymeasure,weareproposinganadditionalchangetorequiretheotherthreeESWpumpstobeoperable(onepumpfromtheaffectedunitandtheothertwofromtheoppositeunitwiththeESWsystemalignedinthecross-tiemode).Thischangeisbeingrequestedforbothunits.Forreasonsdescribedbelow,wemayrequirethischangeinordertoallowUnit1tocontinueoperationatpower.WearerequestinganidenticalchangeforUnit2forconsistencybetweenunits.In-servicetestingdatafortheUnit1WestESWpumphasindicatedgradualdegradationinthepump'sperformance.DatatakenonDecember23,1985indicateddegradationtothepointwherepumpreplacementmayberequiredinthenearfutureandpriortoanyscheduledcoldshutdownoutage.WewouldprefertobeginthisreplacementbytheendofFebruary1986,toensurethatthepumpdoesnotfallbelowminimumperformancestandards.Inthelastfiveyears,fourUnit1ESWpumpreplacementshavebeenperformed,ofwhichonewasinamodeinwhichtheESWpumpswererequiredtobeoperable.Onthatoccasionthenecessaryworkwasaccomplishedin60hours,whichiswithinthe72hoursallowedbytheActionStatementofTechnicalSpecification3.7.4.1.However,repairtimestwiceaslonghaveggagg20482~~0~0~7s15PDRADOCg,05DOpDRpQIP)i)~gigfi&4~

I~l,rC,r'IC Mr.HaroldR.DentAEP:NRC:0972beenexperiencedwhencomplicationshavearisen.Inallcaseswherepumprepairorreplacementisrequired,wewillproceedwithdiligencetoreturnthepumptooperablestatusasrapidlyaspossibleandwithinthepresentlyallowed72hours.Basedonexperience,however,wefeelthatitisnecessarytorequestthischangeinordertoavoidthepossibilityofaunitshutdown.OuranalysisconcerningsignificanthazardsconsiderationsiscontainedinAttachment1tothisletter.TheproposedTechnicalSpecificationpagesarecontainedinAttachment2.Webelievethattheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofeffluentsorasignificantincreaseintheamountsofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee(PNSRC)andwillbereviewedbytheNuclearSafetyandDesignReviewCommittee(NSDRC)attheirnextregularlyscheduledmeeting.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtoMr.'.C.CallenoftheMichiganPublicServiceCommissionandMr.G.BruchmannoftheMichiganDepartmentofPublicHealth.Pursuantto10CFR170.12(c),wehaveenclosedanapplicationfeeof$150.00fortheproposedamendments.ThisdocumenthasbeenpreparedfollowingCorporateprocedureswhichincorporateareasonablesetofcontrolstoinsureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Verytrulyyours,,M.P.AlexiVicePresident[)I~~~Attachmentscc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.BruchmannG.CharnoffNRCResidentInspector-Bridgman P)f'Py'g,VV'Ily-fy~11J~Iily,)gJILJpwrvip)~Jlr~prrIIIjf]IIJJPf~I4hJ,~PyrrV)

ATTACHMENT1TOAEP:NRC:0972REASONSAND10CFR50.92ANALYSESFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITNOS.1AND2TECHNICALSPECIFiCATIONS

Attachment1TechnicalSpecification3.7.4.1requiresthatatleasttwoindependentessentialservicewater(ESW)loopsbeoperableinModes1through4.Theactionassociatedwithonlyoneindependentloopoperableallows72hourstorestoretheotherlooptooperablestatus.Inordertoperformroutinemaintenancenecessarybecauseofnormalpumpdegradation,itisnecessarytovoluntarilyremoveoneESWpumpfromservice.Toensurethatmaintenanceisthoroughlyperformed,itmaybenecessarytotakemoretimethanthe72hoursallowed.Thus,wearerequestingtoaddafootnotetopages3/47-17(Unit1)and3/47-13(Unit2).ThefootnotewillallowcontinuedpoweroperationprovidedthatthreeESWpumpsareoperableandremainavailabletoeitheroftheCookunits.TheBasessection(pageB3/47-4forbothunits)hasbeenrevisedtoreflectthischange.AsdescribedinSection9.8oftheUpdatedFSAR,theESWsystemcontainsfourpumpsthataresharedbetweentheunitsviacross-tievalves.TheESWsystemsuppliescoolingwaterfromLakeMichiganforthecomponentcoolingheatexchangers,containmentsprayheatexchangers,emergencydieselgenerators,andthecontrolroomairconditioningunits.Additionally,theESWsystemprovidesabackupwatersourcefortheauxiliaryfeedwaterpumps,shouldthecondensatestoragetankbeunavailableorempty.AsseeninTable9.8-5oftheUpdatedFSAR,onlytwoofthefourESWpumpsarenecessaryfordesign-basisconditionswithbothunitsatpower.WehavealsostatedintheUpdatedFSARthatwehavethecapabilitytoprovidesufficientESWwatertoserviceaLOCAinoneunitwhiletheotherunitisundergoingcooldown.Thelattercaserequiresthreepumpstoremovetheheatload,andisoutsidetheplantdesignbasis.(ThisisbecausethedesignbasisofCookestablisheshotshutdownasthesafecondition.)Nevertheless,wewillrequirethreepumpstobeoperabletoensurewemaintainthecapabilityforunitcooldownbeyondthe'hotshutdowncondition.Eventhoughthesechangesmayresultinanincreaseintheprobabilityofoccurrenceorconsequencesofapreviouslyanalyzedaccident,theresultsar'eclearlywithinacceptablelimitsasestablishedintheD.C.CookFSAR.Wethusbelievethesechangesdonotinvolveasignificanthazardsconsiderationasdefinedin10CFR50.92.Inaddition,aneditorialchangehasbeenmadeononeoftheaffectedpages.InUnit2,pageB3/47-4,theword"emergency"hasbeenchangedtolowercasetoreflectthefactthatitisnotadefinedterm.