ML17261A930

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Responds to NRC Bulletin 89-003 Re Potential Loss of Shutdown Margin During Refueling Operations.Option to Use Listed Assembly Configurations During Refueling,Including Temporary Storage in Baffle Locations,Will Be Retained
ML17261A930
Person / Time
Site: Ginna Constellation icon.png
Issue date: 01/25/1990
From: MECREDY R C
ROCHESTER GAS & ELECTRIC CORP.
To: JOHNSON A R
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
IEB-89-003, IEB-89-3, NUDOCS 9002060325
Download: ML17261A930 (3)


Text

ACCELERATEDDIUTIONDEMON4TIONSYSTEMREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9002060325DOC.DATE:90/01/25NOTARIZED:YESDOCKETFACIL:50-244RobertEmmetGinnaNuclearPlant,Unit1,RochesterG05000244AUTH.NAMEAUTHORAFFILIATIONMECREDY,R.C.RochesterGas&ElectricCorp.RECIP.NAMERECIPIENTAFFILIATIONJOHNSON,A.R..ProjectDirectorateI-3

SUBJECT:

RespondstoNRCBulletin89-003,"PotentialLossofShutdownMarginDuringRefuelingOperations."DISTRIBUTIONCODE:IE29DCOPIESRECEIVED:LTRENCLSIZE:TITLE:Bulletin89-03,PotentialLossofRequiredShutdownMarginDuringRefuNOTES:LicenseExpdateinaccordancewith10CFR2,2.109(9/19/72).05000244RECIPIENTIDCODE/NAMEPDl-3LAJOHNSON,AINTERNAL:AEOD/DOAKOPP,LARRYNRR/DET/ECMB9HNRR/DOEA/OEAB11NRR/DREP/PEPB9DNRR/PMAS/ILRB12GN1FILE01EXTERNAL:LPDRNSICgo7COPIESLTTRENCLRECIPIENTIDCODE/NAMEPD1-3PDAEOD/DSP/TPABLABARGE,DAVENRR/DET/EMEB9H3NRR/DOEA/OGCB11NRR/DST8E2NUDOCS-ABSTRACTRES/DSIR/EIBNRCPDRCOPIESLTTRENCL~1NOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASfEICONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATEYOURNAMEFROMDISIRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEEDITOTALNUMBEROFCOPIESREQUIRED:LTTR22ENCL ROCHESTERGASANDELECTRICCORPORATION~~pyoaaE>>r$1A1C89EASTAVENUE,ROCHESTER,N.Y.14649-0001January25,19907Ct.C0tc0NCAREAcooc7I6546.2700U.S.NuclearRegulatoryCommissionDocumentControlDeskAttn:AllenR.JohnsonProjectDirectorateI-3Washington,D.C.20555

Subject:

ResponsetoNRCBulletin89-03;PotentialLossofShutdownMarginDuringRefuelingOperationsR.E.GinnaNuclearPowerPlantDocketNo.50-244

DearMr.Johnson:

NRCBulletin89-03requireseachlicenseetonotifytheNRCbyletterwhethertheyhavetakenorwilltaketheactionsspecifiedinthisBulletin.ThepurposeofthiscorrespondenceistoinformtheNRCofRochesterGasandElectricCorporation's(RG&E)planstoaddresstheactionsspecifiedinNRCBulletin89-03.RG&Ewillretaintheoptiontousethefollowingintermediatefuelassemblyconfigurationduringrefueling:1)temporarystorageoffuelassembliesinbafflelocations.2)constructing"boxes"toloaddifficultassemblies.Theseconfigurationscouldresultinachievingamorereactivecoreconfigurationthanthatanalyzedinthecoresafetyanalysis.Inordertoassureadequateshutdownmarginwhenusingtheseintermediatecoreconfigurations,RG&Eincorporatedintoitsfuelassemblymovementsequenceprocedure,inMarchof1989,therequirementthatanyassemblytemporarilystoredinabafflelocationwillhaveatleastoneopencorelocationbetweenitandanyotherassemblystoredonthebaffle.Inaddition,RG&Ewilladd,prior.tothe'nextcorereloadinApril1990,thefollowingrequirementsforconstructingtemporaryboxes.Ifanyboxingconfigurationusesanassemblywhichisnotinitsfinalconfiguration,thenoneoftheassembliesmakinguptheboxmusthaveafaceadjacenttoanopenlocationorthebaffle.Anyfreshassemblynotinitsfinalconfigurationwhichisloadedface-adjacenttoanotherfreshassemblymusthaveatleastonefaceadjacenttoanopencorelocationorthebaffle.Assemblyfacesconstitutingtheboxshouldnotbeconsideredinfulfillingtheopenlocationrequirement.FollowingtheserequirementswillassurethattheshutdownmarginasdefinedinTechnicalSpecificationsismaintainedduringrefuelingoperations.i>~7~5~(i+0()cwp.0'$(~ij)C>.qz>FXl(I)n Toplaceafuelassemblyinanintermediatelocation,thePORCapprovedfuelassemblymovementsequenceproceduremustbechanged.Thisrequiresapprovalofthereactorengineerandtheshiftsupervisor.Byrequiringstrictadherencetoitsproceduresandtheprocedurechangeprocess,RG&Eisassuredthattheseintermediatecoreconfigurationrequirementswillbefollowed.Toensuretheresponsiblepersonnelareinformedonthisissue,thereactorengineersandallthelicensedoperatorswillbetrained,priortothenextcorereloadinApril1990,ontherestrictionsimposedonintermediatefuelassemblyconfigurationsandtheconsequencesofviolatingtheserestrictions.Byincorporatingtheserequirementsandtrainingtheappropriatepersonnel,RG&Ewillcontinuetoassureadequateshutdownmarginduringallrefuelingoperations.Verytrulyyours,')C,>e.RobertC.MecreyGeneralManagerNuclearProductionSubscribedandsworntobeforemeonthis25thdayofJanuary,1990.SAMUELRBAOWNENTARYPUBUC,StaedNowYetkegistatenNe.4917041QggiglinMeneeCy.IWepo~pySetwissbnEqiiesDec.28,19~/RWEN078xc:Mr.AllenR.Johnson(MailStop14D1)ProjectDirectorateI-3Washington,D.C.20555U.S.NuclearRegulatoryCommissionRegionI475AllendaleRoadKingofPrussia,PA19406GinnaSeniorResidentInspectorI