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]ACCELERATED RIDSPROCESSING REGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9506200465 DOC.DATE:

95/06/15NOTARIZED:

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

IndianaMichiganPowerCo.(formerly Xndiana&MichiganEleF'ECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk)R

SUBJECT:

Application foramendstolicensesDPR-58&DPR-74,revising TS4.8.1.1.2.e.7 toreducedurationofsurveillance testingforEDGsduringrefueling operations from24hto8h.DISTR1BUTION CODE:AOOIDCOPIESRECEIVED:LTR IENCLgSIZE:TITLE:ORSubmittal:

GeneralDistribution NOTES0INTERNALRECIPIENT IDCODE/NAME PD3-1LAHICKMAN,J 1EECENTER1CBNRR/DSSA/SRXB OGC/HDS2COPIESLTTRENCL111111111110RECIPIENT IDCODE/NAME PD3-1PDNRR/DE/EMCB NRR/DSSA/SPLB NUDOCS-ABSTRACT COPIESLTTRENCL11111111EXTERNAL:

NOAC11NRCPDR11DCUNNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEKVASTE!CONTACTTHEDOCUiIENT CONTROLDESK,ROOMPI-37(EXT.504-2083)TOELIS!!NATE YOUR4AMLFROMDISTRIBUTION LISTSI'ORDOCUMENTS YOUDON"I'EED!TOTALNUMBEROFCOPIESREQUIRED:

LTTR12ENCL11

IndianaMicIdganPowerCompany~ŽP.O.Box16631Columbus, OH43216June15,1995AEP:NRC:0896V DocketNos.:50-31550-316U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskWashington, D.C.20555Gentlemen:

DonaldC.CookNuclearPlantUnits1and2TECHNICAL SPECIFICATION CHANGESTOMODIFYSURVEILLANCE TESTINGOFTHEEMERGENCY DIESELGENERATORS DURINGREFUELING Thisletteranditsattachments constitute anapplication foramendment tothetechnical specifications (T/Ss)forDonaldC.CookNuclearPlantUnits1and2.Specifically, weareproposing toimplement changestomodifysurveillance testingfortheemergency dieselgenerators (EDGs)duringrefueling operations.

Attachment 1providesadetaileddescription oftheproposedchanges,thejustification forthechanges,andourdetermination ofnosignificant hazardsconsideration performed pursuantto10CFR50.92.Attachment 2containstheexistingT/Spagesmarkedtoreflecttheproposedchanges.Attachment 3containstheproposedT/Spages.Attachment 4providesatechnical evaluation report.Inaddition, thisisacostbeneficial licensing action(CBLA)submittal andrepresents ahighpriorityitemsinceitwill,onceapproved, resultinasignificant reduction inoperating cost.Thelifetimecostsavingassociated withthisCBLAisapproximately

$600,000,asdetailedinAttachment 5.Webelievethattheproposedchangeswillnotresultin(1)asignificant changeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.

l9506200465 950b15PDRADOCK05000315pPDR Il'rp-<<

U.S.NuclearRegulatory Commission Page2AEP:NRC:0896V TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andwillbereviewedbytheNuclearSafetyandDesignReviewCommittee atitsnextregularly scheduled meeting.Incompliance withtherequirements of10CFR50'1(b)(1),

copiesofthisletteranditsattachments havebeentransmitted totheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.Thisletterissubmitted pursuantto10CFR50.30(b)and,assuch,anoathstatement isattached.

Sincerely, VicePresident SWORNTOANDSUBSCRIBED BEFOREMETHIS~begDAYOF~..1995NoaryPubliccadAttachments T

U.S.NuclearRegulatory Commission Page3AEP:NRC:0896V CC:A.A.BlindG.CharnoffJ.B.MartinNFEMSectionChiefNRCResidentInspector

-BridgmanJ.R.Padgett ATTACHMENT 1TOAEP:NRC:0896V DESCRIPTION ANDJUSTIFICATION OFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICAL SPECIFICATIONS Attachment 1toAEP:NRC:0896V Page1A.DESCRIPTION OFCHANGESThechangesproposedbythisletterinvolvetheemergency dieselgenerator (EDG)18month24hoursurveillance test.Thechangesaredescribed individually asfollows:Emergency DieselGenerator Surveillance Requirements T/S:4.8.1.1.2.e.7 (Units1and2)Page:3/48-6(Units1and2)1)Reducethedurationofthesurveillance testfrom24hoursto8hours.2)Modifythefootnoteassociated withtheasteriskattheendof4.8.1.1.2.e.7 toreflectthereduction ofthesurveillance testfrom24hoursto8hours.B.JUSTIFICATION FORCHANGESTheproposedchangesinvolvethe18month24hourEDGsurveillance whichisimplemented byplantprocedure.

Theproposedchangesaredesignedtoreduceoperating costs,increaseoutagescheduling flexibility, reduceshutdownrisk,andincreasediesellife.Reducingthesurveillance timefrom24to8hourswouldsignificantly improveoutageperformance withoutreducingEDGreliability.

Basedonexamination ofCookNuclearPlanttestdata.from'1974 to1994,itisclearthatextensive runtimesbeyond.the..pointwheretheEDG'i'ssta'rted, loa'dedto:3500KW, andachievesane'quilibrium

.condition provide'ittleinsightregarding EDG.reliability.

Theenginesteady-state characteristics areachievedinapproximately'2 ho'ursandthedominantfailuremodesoftheEDGareexpectedtooccur.wi'thinthisperiod.Xnaddition, r'eviewofthe'4.hour,te'st "data'rom1974'to1994does'not.;indicate~he,discovery

.ofanyabnoraral conditions thatwould'have'je'opardized'the'

'ieselfromcompleting itsmissionduringanactualemergency demand.Therefore, asdescribed inAttachment 4,reduction ofthetestdurationfroma24toan8hourperiodwillmaintainanequivalent levelofconfidence inEDGreliability andmayactuallyimproveoverallEDGreliability.

Attachment 1toAEP:NRC:0896V Page2C.10CFR502CRITERIAPer10CFR50.92,aproposedchangedoesnotinvolveasignificant hazardsconsideration ifthechangedoesnot:involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated, orinvolveasignificant reduction inamarginofsafety.Criterion 1ThesafetyfunctionoftheEDGsistosupplyacelectrical powertoplantsafetysystemswheneverthepreferred acpowersupplyisunavailable.

Throughsurveillance requirements, theabilityoftheEDGstomeettheirloadandtimingrequirements istestedandthequalityofthefuelandtheavailability ofthefuelsupplyaremonitored.

Reduction ofthe24hourrunto8hourswillnotreducethesurveillance factorsunderconsideration andwillsufficiently exercisetheEDGanditssupportsystemstoidentifypotential conditions thatcouldleadtoperformance degradation (SeeAttachment 4).Basedontheseconsiderations, itisconcluded thattheproposedchangesdonotinvolveasignificant increase'n theprobability orconsequences ofanaccidentpreviously evaluated.

0Criterion 2Theproposedchangesdonotinvolvephysicalchangestotheplantorchanges.in'lantoperating

.configuration.

Thechangesonlyinvolvethereduction of'18moth24:hourEDG.survei3.lanpe testdur'ation, Thus,',it.

is'"~'.concluded thatthe.proposedchanges.donot'create'he possibility of".anewordifferent kindofaccidentfromanyaccidentpreviously evaluated.

Criterion 3Althoughthedurationofthe18month24hourEDGsurveillance testwouldbereduce'd, theEDGcomponents willcontinuetobesufficiently exercised suchthattheabilitytodetectincipient anddegradedconditions willbemaintained (SeeAttachment 4,Figure2).Theproposedchangeshavebeendetermined tobecompatible withourplantoperating experience andcommensurate withpastsurveillance testresults.Basedontheseconsiderations, itisconcluded thattheproposedchangesdonotinvolveasignificant reduction inamarginofsafety.