ML17037C490

Nine Mile Point Nuclear Station, Unit 1 - Letter Submitting Copy of Report of the Advisory Committee on Reactor Safeguards Dated February 12, 1974 on Expected Performance of General Electric 8x8 Fuel Design for Reload Use

ML17037C490
Person / Time
Site:	Nine Mile Point
Issue date:	02/20/1974
From:	Skovholt D J US Atomic Energy Commission (AEC)
To:	Raymond P D Niagara Mohawk Power Corp
References
Download: ML17037C490 (14)

Text

v'EB201974DocketNo.50-220M.agaraR)hawkPowerCorporationATlM:R.PhilipD.RaymondVicePresident-sneering300ErieBoulevardWestSyracuse,NewYork13202Gentlel1)en:AcopyofthereportoftheAdvisoryCommitteeonReactorSafeguardsdatedFebruary12,1974,isenclosedforyourinformation.ThereportreflectstheCoamhtee'sreviewofthedesignandexpectedperfora)anceofGenera1E1ectric8x8fuelbundlestobeusedinpart;ialandflQ1corereloadsforboilirgwaterreactorssuchasyourNineM.lePointNuclearStationUrd.tl.Youwillbeadvisedwhenwehaveconyletedourreviewofyourrequestforoperationwith8x8fuel.Sincerely,DonaldJ.SkovholtAssistantDirectorforOperatingReactorsDirectorateofLicensing

Enclosure:

ACHSReportRNDiggsNDubecc:Seenext;pagel4JinksBsch~f(ig)SKariSVargaHBoydECaseDistributionDocketFileAECPDRLocalPDRRPReadingBranchReadingJRBuchanan,OHNL93Abernathy,DTIEWNoore,LDTSkovholt,L:ORTJCarter,L:ORRO(3)OGCVStelloJGalloJSaltzmanFLIngramHINuellerJWagner,OCWOM.lier,DRAPCollins,L:OLBDLZiemann,L:ORBg2.82........(vec....--24-9i-'74-----,HMliggsIIIL-'.2/.S/74.,.....DLZien)ann....2i~SV>-----.SURHAMCWov3-..2llgi.'.74,'............FormhFC-318(Rev.9.53)LCM0240CRI3C@31311423I320204 II i;,'iagarnlfohawkPowerCorporationFebruary20,1974ccw/enclosure:J.BruceHacDonald,EsquireDeputyCommissionerandCounsel.NewYorkStateDepartmentofCommerceandCounseltotheAtomicEnergyCouncil99WashingtonAvenueAlbany,NewYork12210ArvinE.Upton,EsquireLeBoeuf,Larry,Leiby6HacRae.1757NStreet',N.W.Washington,D.C.20036AnthonyZ.Roisman,EsquireBerlin,RoismanandKessler1712NStreet,N.W.Washington,D.C.20036Hr.DonaldX.Gleason,ChairmanCountyOfficeBuilding/>6EastBridgeStreetOswego,NewYork13126Hr."RobertP.Jones,SupervisorTownofScribaR.D.II4Oswego,NewYork13126OswegoCityLibrary~~

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ADVISORYCOMMITTEEONREACTORSAFEGUARDSUNlTEDSTATESATOMlCENERGYCOMMlSSlONWASHINGTON,D.C.R054bFebruary12,1974HanorableDixyLeeRayChaiznsnU.S.AtaoiaEmmgyGmni'ssion545458dxJect:HEX'ORCCNGENEBALELECXREC8XSPGELXESX(ÃK)RHEZQADUSE'earDx'.BaysAtits166thmeeting,XhhemLxy7<<9,1974ttheAdvisoryCGHlAitteeanReactorSafeguazdscampletedagexxericreviewofthedesignandex.-pandpeeiarxtlaxxceofGeneralElectric8xSfuelbuncllestobesplayedinpartialandfullcarereloadsinboilingwaterreaclurs.Thesetopicswerediscussedatthe165thACRSmeetingonJanuary10-12,1974t555'te',,~,5574,andinDenver,Colorado,anJanuary24,1974.DuringitsravinestheOmmi.tteehadthebermCit.ofdiscussianswithrepresentativesoftheGenamlZXa~icGxnpxxzy,theAECRegu3atozyStaff,andofthedocu-maxtslistedbeld.TheGeneralElectricSxSfuelassalhlyconsistsof63fuelxoclsplusoneunfueled;water-fle@,spacex"~ptxxrexodinasctuareSx8bundlearraywithina-squaxmchannelbox.ThedesignofthefuelxcdsandfuelxcdbundleintheSxSreloadfuelassemblyis,exceptfardiffexencesinthelength.ofthefuelandgasplenam,thesameasinthe8x8fuelBSSHllblyused3Ilthe~6bo113LIlgwaterxitorconceptreferredtointheCaanittee'sn~ofSex~her21,1972.TheSxSfuelbundlesareinterchangeableinGeneralElectricboilingwaterreactorswiththepeeviouslyused7x7bundles.Xhgeneral,thethexualmarginstofueldamagedesignbasesaregreaterfarSxSfuelthanfar'x7fuel.%hedesignvalueafthelinearheatgemmationratefarnormalopexmtionis33.4kw/ftfarSxSfueland17.5to18.5lee/ftfar.7x7fuelspecificpowerisslightlygreaterfarthe8xSfuelthanforthe7x7fuel.TheGenera.ElectricCatapanybelievesthe3xeerlinearheatgenerationrateandslightlygreaterratioofcladtlxxc1cnesstoxaddietershouMresultinfeweefailuresinSxSftxelthanin7x7fuel.AlthoughthehyQraulicresistaxxceofSx8bunDesisslightlygreaterthanthatof7x7buxxllm,thethecal-hydraulicpex-faxmanceofboxeseitherpartiallyorfullyloadedwithSxSassembliesisnotchsgnldedrelativetocaresloadedwith7x7assemblies.

EmeableicyLee.RayFebruary12,1974SincetheU-235enrichnentsfortheindivMmQ.fuelrods,thenumberl~tlh~lllggtlhd,Ithratioaresimilax'ntheSxSand7x7designs,theneutnnicbehaviorofthetsmdesignsisnotsignificantlydiffanmt.TheintexnallylocatedwaterxodintheSxSdesignreducesxod-to-xodpowerpeaking.Sincethenextmaniaandthemal~rauLiccharacteristicsofSxSand7x7fuelhuxG.esaresimilar,thoraxbehaviorunderahnoxnsloperatianalt'\PlbWbl.Ih~fl'hdcantxolxoddrop,'uelhandling,andsteamlinebreakacx68entsarenatexitedtobesignificantlydifferentforthetwofueldesigns.II~51'WWW,'lkU'tV~h~waterreactors,andtheRegulatoryStaffhaveperfamtectanalysesofthebehaviorof8x8fuelinseveralmixedandfullyreloadedcca~undertxansientandaccidentcxmditions.TheseanalysesymBictthat,,farboilingwatermectxuwwhichhavejetpumps,thepeakcladtemperaturesduringapo.~~tedlarge-breakIQCAusingtheXnterimAcceptanceCriteriaaxelessforSxSthanfor7x7assariblies.ERwmrer,forlargepostulatedbreaksinnan-)etpumpplantsandfarsmallandintexaectiatesizebreaksfarallplants,thepr~x8peakcladtemperaturesareinthesamerangefarbothSxSa+i7x7fuel.Consequently,indivtitualreviewsbytheRegu-latoryStaffoftheequiperfarmmceofSxSreloadfuel,incluKLngplantmpecificsystemeffectsazxlanysignificantcorefuelloadLingil1bIIfhIfwHth8xSfueltodeteexninelimitsanreactoroperatingconditiorm.TheCce-mitteewishestobeirdhraedconcerningtheresultsofthesereviewsfortheinitialSxSfuelload:tngsineachoftheseveralGeneralElectricboilingwaterreactarproductlines.TheRegulatoryStaffplanstousetheresultsofrecentlycanductedN~~~8~~~I'llanalyticalnedelsfarSxBfuel.TheQanaitteewishestobekeptinfcemd.IlE!fS16andhun31eswhosedesignsbrac]setthedimensiansoftheSxSfuelandantheperfarmanceofcarescantainingmixbmesofassaablieswithdifferentrmobersandsizesoffuelrcds.Althoughmechanicaltestshavebeenperfaxned'an8xSfuelassembliesanRcampanentstodaaanstratetheirintegri.ty,additionalteststovex'ifyspacergridstrengthhavebeenrequestedbytheRegulatoryStaff.ThismattershouldberesolvedinaninersatisfactarytotheRecpQatoxyStaff.

~~lyRIMmableDixyLeeHayFehrum~12,1974TheAneealElectricCaqxmyhasplannedaprecgamofbothpre-andpost-inmHatianenauninatianstomonitortheperformanceof8xSfuel!!!!~!.1lprogramandwishestobekeptinformed.TheHegulatoryStaffiscurrentlyrevhm9xgthetreatment.ofuncextaintiesintheestablishmentandmmi;toringofoperatinglimitsfarboilingwaterreactors.TheCcxanitteewishestobekeptinfarneQ.He-evaluationofcareoperatinglimitswillbenecessaryasaresultoftherecentlygcanulgatedAccephmceCriteriaforEmergencyCoreCoolingSystems.TheGanmitteevrishestobekeptinfarrneci.The~tteebelievesthat,withduereganltotheabavecomments,incluQiLngtheindividualreloadreviewsbytheHegulatoryStaffwhichwilladdressspecificplantfeatures,theGenera.Electric8x8fuelassanbliesareacceptableforuseinthereloadofGeneralElectricboilingwaterxeactxam.&E.m.H.StrattonChaixaenStBefezencesattached.

HonorableDDTLeeRayPebruary12,1974203Q45.6."Dresden3NuclearPowerStation,SecondReloadLicenseSuhnittal",GeneralElectricCo.,NuclearPuelD@lartment,SepteInber1973@andSuppleIRRItAgRR%6her17~1973~SupplementB~DeceH58K'p1973SupplatentC,Decanber6,1973;SupplementD,Deliber17,1973;SupplementEcDe~Mr17'973'upplementPrJanuazp's1974'upplementG,Januaxy9~1974)SupplementH,January'23,1974"NineMilePointUnit1-SemndRefueling",P.D.RayIImdtoA.Giambusso,September14,1973'NineMi1ePointUnit1SafetyAnalysisforType5andType6ReloadPuelgNiagaraHat'uvr8cPower~aratiangOctober15,1973"NineMilePointUnitlrPartlcNan<<ProprietaryResponseandPart2,ProprietaryRespanse,"Jamlary15,1974MonticelloNuclearGeneratingPlalltgPexlIBnentPlantChangestoAccamncdateF~ilibriumCoreScramReactivityInsertianCharac-teristics",January23,1974NED0-20103,"QerumalDesignInfoxIoatianforGeneralElectricBoilingWaterReactorReloadFuelCamellcinginSpriIlg,'74",September1973H.E.Wi11iamsanaIldD.C.Ditmore,"Experiencewith.HWRFuel9hroughSeptarher1971",NED0-10505,May1972GEAP-4059,"VibrationofPuelRodsinP~elPlow",E.P.Quinn,July1962708Letter,J.A.HindstoV.Nmre,'ebruary4,1974,"P~lrietaryInfoxmation,SxSPuelWearTests"X~.JA,HindstoVMoorePehnlary41974SXSPue1Sur-veillancePIugramNEM-10735,"DensificationCansiderationsinHNRFuelDesignandPerfoxmallce",D.C.DitmareandRB.E13dns,Decaaber1972/Supplement2,"ResponsetoAECQuestions,NEW&-10735Apri11973"(Proprietary)gSupplement2,"ResponsetoAK'.Questions,NEDDY-10735Supplement1",May1973'Proprietary),Supplement3,"RespansetoAECQuestions,NEDH10735@Supplement1gJune,1973(Proprietary),Supplement4g"ResponsestoAECQuestionsNEXT-10735",tuly1973,(Proprietary)fSupplement5'g',DensifxcatiaIl.Consideratians1nHNRFuel'gJuly1973(Proprietary).gSUpplements6j7gaIKlSgFuelDensificatiaIlEffectsanGeneIzLElectricHoiUingWaterPpm~Fuel"~

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~~Q~Hceozab3aDixy'eeRayFebruary12,1974,References'contend)NEDO20181'uppl6fMlt1gDecember3t1973(Pxoprj~~)g~GAPIII"AJ4xM.forthePredictionofPelletConductanceinBNRFuelRods"10."TechnicalReportanDensificationofGm~ElectricReat'~Fuels",U.S~AtomicEntryCamaission,August23,1973,and"Supple>rent1totheTechnicalReportonDensificationofCanexalElectricReactorFuels",December14,197311."SensitivityStayon~6FuelBuntsResponsetoaPoshQatedIDGE,C.M.MaserandR.W.Grume,Deaeaher197312.NEIPr10801,"Mod~theE+/6Los~&DcelantAccident"CoreSprylyandBottxxnFloodix@HeatTransferEffectiveness",J..D.DuncanandJ.E.Leenaxd,'Maxch1973,and"ResponsetoAECRet:gmstforAdditionalInformationanNEDE-10801",May19739'mpa5.etary),13,.ME0-10993,"CoreSprayandBottcmFloodingEffectivenessinthe~6"gJ.D.DurbanandJ.E.Leceard,Segteaher197314."CoreTkmenal'AnalysesofaStainlessSteelCladHeaterRodBundle",C.M.userandR.W.Griebe,December197315."StatusRepI~'ntheGeneralElectricCompanySx8FuelAssembly",January18,1974,USAECRegu1atoryStaff16."TechnicalReportontheGeneralElectricOarttpanySxSFuelAssembly",February5,1974,USMCRegulatoryStaff~ff~~L~A 0