ML17332A799

Application for Amends to Licenses DPR-58 & DPR-74,revising TS 4.8.1.1.2.e.7 to Reduce Duration of Surveillance Testing for EDGs During Refueling Operations from 24 H to 8 H

ML17332A799
Person / Time
Site:	Cook
Issue date:	06/15/1995
From:	FITZPATRICK E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17332A800	List: ML17332A799 ML17332A801 ML17332A802
References
AEP:NRC:0896V, AEP:NRC:896V, NUDOCS 9506200465
Download: ML17332A799 (10)

Text

RIORITY]ACCELERATEDRIDSPROCESSINGREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9506200465DOC.DATE:95/06/15NOTARIZED:YESDOCKETgFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATIONFITZPATRICK,E.IndianaMichiganPowerCo.(formerlyXndiana&MichiganEleF'ECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)R

SUBJECT:

ApplicationforamendstolicensesDPR-58&DPR-74,revisingTS4.8.1.1.2.e.7toreducedurationofsurveillancetestingforEDGsduringrefuelingoperationsfrom24hto8h.DISTR1BUTIONCODE:AOOIDCOPIESRECEIVED:LTRIENCLgSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES0INTERNALRECIPIENTIDCODE/NAMEPD3-1LAHICKMAN,J1EECENTER1CBNRR/DSSA/SRXBOGC/HDS2COPIESLTTRENCL111111111110RECIPIENTIDCODE/NAMEPD3-1PDNRR/DE/EMCBNRR/DSSA/SPLBNUDOCS-ABSTRACTCOPIESLTTRENCL11111111EXTERNAL:NOAC11NRCPDR11DCUNNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEKVASTE!CONTACTTHEDOCUiIENTCONTROLDESK,ROOMPI-37(EXT.504-2083)TOELIS!!NATEYOUR4AMLFROMDISTRIBUTIONLISTSI'ORDOCUMENTSYOUDON"I'EED!TOTALNUMBEROFCOPIESREQUIRED:LTTR12ENCL11

IndianaMicIdganPowerCompany~ŽP.O.Box16631Columbus,OH43216June15,1995AEP:NRC:0896VDocketNos.:50-31550-316U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555Gentlemen:DonaldC.CookNuclearPlantUnits1and2TECHNICALSPECIFICATIONCHANGESTOMODIFYSURVEILLANCETESTINGOFTHEEMERGENCYDIESELGENERATORSDURINGREFUELINGThisletteranditsattachmentsconstituteanapplicationforamendmenttothetechnicalspecifications(T/Ss)forDonaldC.CookNuclearPlantUnits1and2.Specifically,weareproposingtoimplementchangestomodifysurveillancetestingfortheemergencydieselgenerators(EDGs)duringrefuelingoperations.Attachment1providesadetaileddescriptionoftheproposedchanges,thejustificationforthechanges,andourdeterminationofnosignificanthazardsconsiderationperformedpursuantto10CFR50.92.Attachment2containstheexistingT/Spagesmarkedtoreflecttheproposedchanges.Attachment3containstheproposedT/Spages.Attachment4providesatechnicalevaluationreport.Inaddition,thisisacostbeneficiallicensingaction(CBLA)submittalandrepresentsahighpriorityitemsinceitwill,onceapproved,resultinasignificantreductioninoperatingcost.ThelifetimecostsavingassociatedwiththisCBLAisapproximately$600,000,asdetailedinAttachment5.Webelievethattheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.l9506200465950b15PDRADOCK05000315pPDR Il'rp-<<

U.S.NuclearRegulatoryCommissionPage2AEP:NRC:0896VTheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandwillbereviewedbytheNuclearSafetyandDesignReviewCommitteeatitsnextregularlyscheduledmeeting.Incompliancewiththerequirementsof10CFR50'1(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtotheMichiganPublicServiceCommissionandtotheMichiganDepartmentofPublicHealth.Thisletterissubmittedpursuantto10CFR50.30(b)and,assuch,anoathstatementisattached.Sincerely,VicePresidentSWORNTOANDSUBSCRIBEDBEFOREMETHIS~begDAYOF~..1995NoaryPubliccadAttachments T

U.S.NuclearRegulatoryCommissionPage3AEP:NRC:0896VCC:A.A.BlindG.CharnoffJ.B.MartinNFEMSectionChiefNRCResidentInspector-BridgmanJ.R.Padgett ATTACHMENT1TOAEP:NRC:0896VDESCRIPTIONANDJUSTIFICATIONOFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECIFICATIONS Attachment1toAEP:NRC:0896VPage1A.DESCRIPTIONOFCHANGESThechangesproposedbythisletterinvolvetheemergencydieselgenerator(EDG)18month24hoursurveillancetest.Thechangesaredescribedindividuallyasfollows:EmergencyDieselGeneratorSurveillanceRequirementsT/S:4.8.1.1.2.e.7(Units1and2)Page:3/48-6(Units1and2)1)Reducethedurationofthesurveillancetestfrom24hoursto8hours.2)Modifythefootnoteassociatedwiththeasteriskattheendof4.8.1.1.2.e.7toreflectthereductionofthesurveillancetestfrom24hoursto8hours.B.JUSTIFICATIONFORCHANGESTheproposedchangesinvolvethe18month24hourEDGsurveillancewhichisimplementedbyplantprocedure.Theproposedchangesaredesignedtoreduceoperatingcosts,increaseoutageschedulingflexibility,reduceshutdownrisk,andincreasediesellife.Reducingthesurveillancetimefrom24to8hourswouldsignificantlyimproveoutageperformancewithoutreducingEDGreliability.BasedonexaminationofCookNuclearPlanttestdata.from'1974to1994,itisclearthatextensiveruntimesbeyond.the..pointwheretheEDG'i'ssta'rted,loa'dedto:3500KW,andachievesane'quilibrium.conditionprovide'ittleinsightregardingEDG.reliability.Theenginesteady-statecharacteristicsareachievedinapproximately'2ho'ursandthedominantfailuremodesoftheEDGareexpectedtooccur.wi'thinthisperiod.Xnaddition,r'eviewofthe'4.hour,te'st"data'rom1974'to1994does'not.;indicate~he,discovery.ofanyabnoraralconditionsthatwould'have'je'opardized'theieselfromcompletingitsmissionduringanactualemergencydemand.Therefore,asdescribedinAttachment4,reductionofthetestdurationfroma24toan8hourperiodwillmaintainanequivalentlevelofconfidenceinEDGreliabilityandmayactuallyimproveoverallEDGreliability.

Attachment1toAEP:NRC:0896VPage2C.10CFR502CRITERIAPer10CFR50.92,aproposedchangedoesnotinvolveasignificanthazardsconsiderationifthechangedoesnot:involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated,orinvolveasignificantreductioninamarginofsafety.Criterion1ThesafetyfunctionoftheEDGsistosupplyacelectricalpowertoplantsafetysystemswheneverthepreferredacpowersupplyisunavailable.Throughsurveillancerequirements,theabilityoftheEDGstomeettheirloadandtimingrequirementsistestedandthequalityofthefuelandtheavailabilityofthefuelsupplyaremonitored.Reductionofthe24hourrunto8hourswillnotreducethesurveillancefactorsunderconsiderationandwillsufficientlyexercisetheEDGanditssupportsystemstoidentifypotentialconditionsthatcouldleadtoperformancedegradation(SeeAttachment4).Basedontheseconsiderations,itisconcludedthattheproposedchangesdonotinvolveasignificantincrease'ntheprobabilityorconsequencesofanaccidentpreviouslyevaluated.0Criterion2Theproposedchangesdonotinvolvephysicalchangestotheplantorchanges.in'lantoperating.configuration.Thechangesonlyinvolvethereductionof'18moth24:hourEDG.survei3.lanpetestdur'ation,Thus,',it.is'"~'.concludedthatthe.proposedchanges.donot'create'hepossibilityof".anewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Criterion3Althoughthedurationofthe18month24hourEDGsurveillancetestwouldbereduce'd,theEDGcomponentswillcontinuetobesufficientlyexercisedsuchthattheabilitytodetectincipientanddegradedconditionswillbemaintained(SeeAttachment4,Figure2).Theproposedchangeshavebeendeterminedtobecompatiblewithourplantoperatingexperienceandcommensuratewithpastsurveillancetestresults.Basedontheseconsiderations,itisconcludedthattheproposedchangesdonotinvolveasignificantreductioninamarginofsafety.