ML17325B344

Application for Amends to Licenses DPR-58 & DPR-74,revising Tech Specs Re Min Vol for Diesel Generator Fuel Storage Tanks from 42,000 Gallons to 46,000 Gallons of Fuel

ML17325B344
Person / Time
Site:	Cook
Issue date:	11/28/1989
From:	ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	MURLEY T E NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17325B345	List: ML17325B344 ML17325B346
References
AEP:NRC:0896K, AEP:NRC:896K, NUDOCS 8912040016
Download: ML17325B344 (9)

Text

ACCELERATED DISTRIBUTION DEMON~)TIMTION SYSTEM0~REGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:8912040016 DOC.DATE:

89/11/28NOTARIZED:

NODOCKETFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,Indiana60500031550-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana605000316AUTH.NAMEAUTHORAFFILIATION ALEXICH,M.P.

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

DocumentControlBranch(Document ControlDesk)

SUBJECT:

Application foramendstoLicensesDPR-586DPR-74,changing mxnvolumefordieselgenerator fuelstoragesys.DISTRIBUTION CODE:AOOIDCOPIESRECEIVED:LTR JENCL$SIZE:dfTITLE:ORSubmittal:

GeneralDistribution NOTESRECIPIENT IDCODE/NAME PD3-1LAGIITTER,J.

INTERNAL:

NRR/DET8H3NRR/DOEA/OTSB11 NRR/DST/SELB 8DNRR/DST/SRXB 8EREGFIL01EXTERNAL:

LPDRNSICCOPIESLTTRENCL11551111111110111111RECIPIENT IDCODE/NAME PD3-1PDNRR/DET/ECMB 9HNRR/DST8E2NRR/DST/SICB 7ENUDOCS-ABSTRACT OGC/HDS1RES/DSIR/EIB NRCPDRCOPIESLTTRENCL1111111111101111NOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWAS'!CONTACTTHE,DOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!TOTALNUMBEROFCOPIESREQUIRED:

LTTR22ENCL20 Indianal5chiganPowerCompanyP.O.Box16631Columbus, OH43216AEP:NRC:0896K DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74REVISIONOFMINIMUMREQUIREDVOLUMEFORDIESELGENERATOR FUELSTORAGESYSTEMU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.CD20555Attn:T.E.MurleyNovember28,1989

DearDr.Murley:

Thisletterconstitutes anapplication foramendment totheTechnical Specifications fortheDonaldC.CookNuclearPlantUnits1and2.Specifically, weareproposing tochangetherequiredminimumvolumeofthedieselgenerator fuelstoragetanksfrom42,000gallonsoffuelto46,000gallonsoffuel.Wearealsoclarifying theT/Ssuchthatthe46,000gallonsisspecified asanindicated volume.Thereasonsforthechangesandouranalysisconcerning significant hazardsareincludedinAttachment 1ofthisletter.Attachment 2containstheproposedrevisedTechnical Specification pages.Webelievetheproposedchangeswillnotresultin(1)asignificant changeinthetypesofeffluents orasignificant increaseintheamountsofanyeffluent, thatmaybereleased, offsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.

TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andbytheNuclearSafetyandDesignReviewCommittee.

Incompliance withtherequirements of10CFR50.91(b)(1),copiesofthisletteranditsattachments havebeentransmitted toMr.R.C.CallenoftheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.S9i20400i6 85'1128'PDRADOCK05000315PPDC Dr,T.E.Murley-2-AEP:NRC:0896KThisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoensureitsaccuracyandcompleteness priortosignature bytheundersigned.

.Sincerely, M.P.AlexchVicePresident ldpAttachments cc:D.H.Williams, Jr.A.A.Blind-BridgmanR.C.CallenG.CharnoffA.B.Davis-RegionIIINRCResidentInspector

-BridgmanNFEMSectionChief S'

ATTACHMENT 1TOAEP:NRC:0896K REASONSAND10CFR50.92SIGNIFICANT HAZARDSEVALUATION FORCHANGESTOTECHNICAL SPECIFICATIONS FORTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2 ATTACHMENT 1TOAEP:NRC:0896K Page1Introduction InthisTechnical Specification (T/S)application, weproposetochangetherequiredminimumvolumeofthedieselgenerator fuelstoragetanks.Specifically, weareproposing changestoSpecifications 3.8.l.l.b.2 and3.8.1.2.b.2 thatwouldincreasetherequiredminimumvolumeofthestoragetanksfrom42,000gallonsoffueloilto46,000gallonsoffueloil.Vearealsoclarifying theT/Ssuchthatthe46,000gallonminimumisspecified asanindicated volume.BackroundInformation Notice89-50alertedlicensees tothepossibility thattheT/Srequirements forminimumvolumeofdieselgenerator fueloilmaynotbesufficient.

Theinformation noticereferenced Regulatory Guide1.137(FuelOilSystemsforStandbyDieselGenerators) forguidanceincalculating theminimumrequiredvolume.ANSIN195-1976, whichisreferenced byRegulatory Guide1.137,requiresthatsufficient on-siteoilstoragebeprovidedtooperatetherequirednumberofdieselgenerators foreithersevendaysorforthetimerequiredtoreplenish theoilfromsourcesoutsidetheplantsitefollowing adesignbasiseventoraccidentwithoutinterrupting theoperation ofthediesels,whichever islonger.Regulatory Guide1.137andANSIN195-1976 providetwomethodsforcalculating fueloilstoragerequirements, Thefirstalternative accountsforthevariation ofloadsplacedonthedieselgenerator duringtheseven-day period(i.e.,theloadhistory).

Ifthisalternative ischosen,amarginof10%mustbeaddedtothecalculated storagerequirement.

Inthesecondalternative, whichistherecommended one,itisconservatively assumedthatthedieseloperatescontinuously forsevendaysatitsratedcapacity.

AttheCookNuclearPlant,wehaveemployedthesecondalternative indetermining ourrequiredminimumvolumeforthefuelstoragetanks'hecalculations arebasedonsevendaysofoperation, sincewebelievethistobethemorelimitingoftherequirements fortheCookNuclearPlant.ReasonsForChaneAsperInformation Notice89-50,wehaverecentlyupdatedourcalculation fordetermining fueloilstoragerequirements.

Inourcalculations weusedthesecond(recommended) alternative ofRegulatory Guide1.137,i.e.,weassumedthedieselisoperatedatratedcapacityforsevendays.Ourcalculations showedthatthe ATTACHMENT 1TOAEP:NRC:0896K Page2seven-day consumption ratewas43,240gallons.ThisvalueisslightlyabovethecurrentT/S-required minimumvolumewhichwasbasedonourearliercalculations, Weareproposing toincreasetherequiredminimumvolumeto46,000gallonsandtoclarifythatthisisan"indicated" volume.Thephysicalcharacteristics ofthetankaresuchthatnotallofthevolumeofthetankisaccessible.

Thebottomoftheoutletpipeislocatedapproximately sixinchesfromthebottomofthetank.Additionally, thetanksareinstalled withaslightdownwardslope.Onemethodofdetermining tankvolumeiswithadepthstick,whichisinsertedtowardsthedeependofthetank.Thedifference betweentheminimumcalculated fuelthatisnecessary forsevendaysoperation andourproposedT/Sminimumindicated quantityof46,000gallonsprovidesamplemargintoaccountforthesetankcharacteristics.

ItisnotedthateventhoughtheT/Srequirement wasslightlynon-conservative withrespecttothecalculated seven-day requirements, weprocedurally requirethatatleast46,000gallonsoffueloilbemaintained inthetanks.Historically, wehavemaintained thetankvolumeabove50,000gallons.Ourpracticehasbeento"topoff"thetankswhenevertheyreachapproximately 50,000gallons'ustification ForChaneTheproposedminimumindicated tankvolumeof46,000gallonsisconservative withrespecttoourcurrentcalculations andismorerestrictive thanourcurrentT/Srequirement of42,000gallons.AnalsisofSinificantHazardsPer10CFR50.92,aproposedamendment willnotinvolveasignificant hazardsconsideration iftheproposedamendment doesnot:1)Involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, 2)Createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously analyzedorevaluated, or3)Involveasignificant reduction inamarginofsafety.

~~

ATTACHMENT 1TOAEP:NRC:0896K Page3Criterion 1Thebasisfordetermining fueloilstoragerequirements isdefinedinANSIN195-1976 andRegulatory Guide1.137.SinceourproposedT/Svalueisconservative withrespecttoourcalculations performed inaccordance withthesedocuments andismorerestrictive thanourcurrentT/Svalue,thisproposedchangewillnotsignificantly increasetheprobability orconsequences ofapreviously analyzedaccident, norwillitinvolveareduction inamarginofsafety.Criterion 2Thisproposedchangewillrequiretheplanttobeoperatedundermorerestrictive conditions thancurrently required.

Therefore, thechangeshouldnotcreatethepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously analyzedorevaluated.

Criterion 3SeeCriterion 1above.Lastly,wenotethattheCommission hasprovidedguidanceconcerning thedetermination ofsignificant hazardsbyproviding certainexamples(48FR14870)ofamendments considered notlikelytoinvolvesignificant hazardsconsideration, Thesecondoftheseexamplesreferstochangeswhichconstitute additional limitations, restrictions, orcontrolsnotpresently includedintheT/Ss.Asdescribed above,thischangeismorerestrictive innaturethanthepresentT/S.Therefore, webelievetheexamplecitedisapplicable andthatthechangeshouldnotinvolvesignificant hazardsconsideration.