ML17309A562

Provides Summary of Public Meeting on 941005 W/Util to Provide Update on Evaluation of Steam Generator Replacement & Fuel Reload Changes at Plant,Currently Scheduled for Spring of 1996

ML17309A562
Person / Time
Site:	Ginna
Issue date:	11/23/1994
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
NUDOCS 9412010209
Download: ML17309A562 (116)

Text

PR.IC3R.IEY1(ACCELERATEDRIDSPROCESSIVEGREGULATORYINFORMATXONDXSTRXBUTIONSYSTEM(RIDS)ACCESSIONNBR:9412010209DOC.DATE:94/11/23NOTARIZED:NOFACIL:50-244RobertEmmetGinnaNuclearPlant,Unit1,RochesterGAUTH.NAMEAUTHORAFFILIATIONMECREDY,R.C.RochesterGas&ElectricCorp.RECIP.NAMERECIPIENTAFFXLIATIONJOHNSON,A.R.ProjectDirectorateI-3

SUBJECT:

Providessummaryofpublicmeetingon941005w/utiltoprovideupdateonevaluationofsteamgeneratorreplacement&fuelreloadchangesatplant.,currentlyscheduledforspringof1996.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionDOCKET1205000244NOTES:LicenseExpdateinaccordancewith10CFR2,2.109(9/19/72).05000244RECIPIENTIDCODE/NAMEPD1-3LAJOHNSON(ATNTERNA:FILECENTEB01RR/DRCK/HICBNRR/DSSA/SPLBNUDOCS-ABSTRACT=EXTERNAL'OACCOPIESLTTRENCL11111111111111RECIPIENTIDCODE/NAMEPD1-3PDNRR/DE/EELBNRR/DRPWNRR/DSSA/SRXBOGC/HDS3NRCPDRCOPIESLTTRENCL1111111110NOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEiVASTE!CONTACT'I'HEDOCL'WIENTCONTROLDESK,ROONIPI-37IEXT.504-20S3)TOELIifINATEYOI'RNAZIEFROifDISTRIBUTIONLIS'I'SI'ORDOCLMEN'I'SYOI.'ON"I'L'ED!TOTALNUMBEROFCOPIES,REQUIRED:LTTR13ENCL12 AHnROCHESTERGASANDEIECTRICCORPORATION~89FASTAVENIJE,ROCHESTER,N.YIrI&9-0001ARFACODE716546-2700ROBERTC.MECREDYVicePresidentNvdearOperationsNovember23,1994U.S.NuclearRegulatoryCommissionDocumentControlDeskAttn:AllenR.JohnsonProjectDirectorateI-3Washington,D.C.20555

Subject:

PublicMeetingonOctober5,1994todiscussSteamGeneratorReplacementandFuelReloadChangesfor1996R.E.GinnaNuclearPowerPlantDocketNo.50-244

DearMr.Johnson:

OnOctober5,1994apublicmeetingwasheldbetweenRochesterGasandElectricstaffandmembersoftheNRCtoprovideanupdateontheevaluationofthesteamgeneratorreplacementandfuelreloadchangesatGinnaStation,currentlyscheduledforthespringof1996.ThepurposeofthepresentationswastodemonstratethattheSteamGeneratorReplacementProjectcouldproceedwithintheprovisionsof10CFR50.59.Thisletterprovidesasummaryofthemeeting.RG&Epresentedtheresultsoftheaccident/transientpreliminarysafetyevaluation,includingthefiveaccident/transientswhichwereanalyzedindetail.Thisevaluationhadbeenpreviouslyprovidedtothestaff.RG&EnotedthatitisourintentiontomaketheanalysisoftheLowTemperatureOverpressurizationtransientperformedforthisprojecttheanalysisofrecordforGinnaStation.Thestaff(MarkCaruso)statedthatformalNRCreviewofthisanalysiswasnotrequired.RG&Epresentedthestatusofthe1996FuelReloadAnalysis.ItwasrequestedthatthestaffexpeditethereviewoftheWestinghouseCOBRA-TRACLOCAmethodology,Addendum3,sincetheresultsofthisreviewcouldimpacttheanalysisforthereload.Thestaffrespondedthattheywereawareoftheneedtofinishthisreview.RG&EalsonotedthatwiththeproposedtransitiontoImprovedStandardTechnicalSpecifications,therewouldbenoneedforanyLicenseAmendmentRequeststosupportthe1996FuelCycle.RG&Efollowedwithapresentationontheresultsoftheprimarysystempipingstressanalysisresults.Thepresentationindicatedthatallacceptancecriteriacontinuedtobemet.RG&Ealsopresentedanoutlineofthecurrentproposedmethodologyforinstallingthereplacementsteamgenerators.ThispresentationonnnC.Q9412010209941i23PDRADQCK05000244pPDR00 40I' includedchangesfrominformationpreviouslypresentedmostnotablythemethodofremovalofconcretefromthecontainment.Mock-uptestinghasdemonstratedthatremovaloftheconcreteusingautomatedhydraulicjackhammersispreferredoverotheravailableoptions.Detailedinformationontheriggingscheme,haulroutes,insulationandpipecuttingandweldingwasalsopresented.Finally,RG&Epresentedourplansregardingtheextensiveradiologicalprotectionmeasuresbeingcontemplated,includingourplansfororiginalsteamgeneratoron-sitestorage;purchaseanduseofdosimetry;pipe-enddecontaminationmethods;domedecontamination;andadomelinerandconcreteactivationstudy.NRCstaffindicatedthatallanalysestodateappearedtobesatisfactory,andnochallengestothe10CFR50.59processbeingproposedbyRGGEwereenvisioned.Attachedarecopiesofthepresentationoverheadsfromthemeeting.RGGEappreciatesthevaluableinputandcooperationprovidedbythestaffatthismeeting.Verytrulyyours,RobertC.MecredyAttachmentBJF/354xc:Mr.AllenR.Johnson(MailStop14D1)ProjectDirectorateI-3Washington,D.C.20555U.S.NuclearRegulatoryCommissionRegionI475AllendaleRoadKingofPrussia,PA19406USNRCGinnaSeniorResidentInspector 0JJ~4e

~9412010209GinnaStationBechtelRochesterGasandElectricGinnaStationSteamGeneratorReplacementNRCStatusUpdateOctober5,1994I.INTRODUCTIONII.PROJECTSTATUS/OVERVIEWFabricationStatusInstallationStatusG.WrobelB.CarrickIII.RSGSAFETYEVALUATIONPreliminarySafetyEvaluationAccidentAnalysesContainmentAnalysisLowTemperatureOverpressurizationIV.1996FUELRELOADB.FlynnR.Eliasz~SteamGeneratorReplacementInterface~ImprovedTechnicalSpecificationsInterfaceLUNCHV.RCSPIPINGANALYSISB.CarrickVI.REPLACEMENTSTEAMGENERATORINSTALLATIONRCSPipeCutting/WeldingRiggingScheme/DropAnalysisContainmentDomeOpeningsSteamGeneratorInsulation/ContainmentSumpAnalysisVII.RADIOLOGICALPROTECTIONMEASURESVIII.SUBMITTALSCHEDULEB.CarrickM.FitzsimmonsB.FlynnA.HermanB.FlynnOSOctober94 JY fGinnaStationBechtel8'lVI~QmpsonRochesterGasandElectricOVERVIEWTwoLoopWNSSSBA,W"Like-in-Kind"ReplacementSGsInstallViaConstructionOpeningsinContainmentDomeSpring,1996Outage67DaysBreaker-to-BreakerOutage05October94

+GinnaStationBechtellpmpsonRochesterGasandElectricFABRICATIONSTATUSLowerShellAssyNDEPriortoPWHTUpperShellAssyInFabricationBundleInternalsInFabricationTubes(I-690)PPQ-2@VALINQXSteamSeparators/UpperBundleAssyInFabricationFeedwaterHeaderPartsonOrder05October94 Babcock&WilcoxCanadaAdvancedSeries.PWRReplacementSteamSteamnoateHgnethctencymotetureseParstorsSundleInspectionaccessduct~FeodwetefInletgFeedwstorheaderStemlesssleetIOCUceelaltuho'supporegnd~I)~SIOWdOWnheaderntNSnIIH~lt~.~fr.~IntegralvsrtrcalsupportvIPnmarynoastePnmarystdemanwsytheronesIetmtndgxwosouletdenleneton~endotetvloetloAnoncoconetwetonIhelelms~IOWntlenetNteendteecletteenewnenle~ocrtonIormecenotnteeeoorymooetwnnl~nchteeehtohcttcltlerlnItense~oltnetewctotoelondootetntoneetIIegnoton~ueenottnotdnooeuooon\~Icanotnoteenootnnmdorr~ITthermo~enteteendsotetoeweterneIsntttereIAwteetolHIetteesntoolnntwtnstcedIotenon~eormntlhweetneedtlrtwnnoSelsellonow~oeoeteltnecontsneneo'%teteIooeoOeno~/ectleewmwwcoonenoeettnenmce

GinnaStationIBechteliBWIIsimpson<CDRochesterGasandElectricINSTALLATIONSTATUSDetailedConceptualStudiesCompletedMajorSubvendorsIdentifiedBechtelProceedingwithEngineering1995OutageScopeEstablished199SOutageas"DryRun"EngineeringConstructionPlanningAdministrativeRadiationProtection05October94

GinnaStationBechtellpmpocnRochesterGasandElectricVEvents~UFSARChapter15TransientAnalyses~UFSARChapter6ContainmentIntegrityUFSARChapter5OverpressureDesignTransientsMethod~IdentifyAcceptanceCriteria~IdentifyPertinentParameters~EvaluateChange:Benefit/Detriment/NoeffectResults~AcceptanceCriteriaforAllEventsMet~OnlyFiveTransientsRequiredDetailedAnalysis05October94 AHOR.E.GinnaSteamGeneratorReplacementEquipmentComparisonGinnaStationBVVIBee%el~PICNlRochesterGasandElectricManuf./ModelPrimarySidePressureDrops(0%plug)NozzleinlettoNozzleoutletPrimarySideFlowforabovedp'sHeatTransferAreas0%Plugging15%Plugging20%PluggingTubingOutsideDiameterAvg'.WallThicknessNumberofTubesMaterialVolumes,primarysideInletPlenumTubesOutletPlenumExistingW/44(feedring)33.5psi34.6E06Ibm/hr44430sq.ft.37765sq.ft.0.875in0.050in3260Inconel600,MA133cu.ft.675.5cu.ft.133cu.ft.ReplacementBWI(feedring)31.0psi35.0E06ibm/hr54001sq.ft.43200sq.ft.0.750in0.0431in4765Alloy690,TT130cu.ft.710cu.ft.130cu,ft.,SecondaryVolume,TotalSecondaryWaterMass,nominal100%(1520MWt)0%(HZP)SecondaryMassFlow,100%SteamLineOrificeSizeInitialSteamPressure,100%4580cu.ft.85,410ibm130,120ibm3.3E06ibm/hr4.37sq.ft.830psia4513cu.ft.86,257ibm118,836ibm3.3E06ibm/hr1.4sq.ft.877psia005October94 GinnaStationBechtelCDRochesterGasandElectricEVALUATEANALYZEXXXXXXXXXX'XXXXXXXXXXX15.1IncreaseinHeatRemovalbytheSecondarySystem15.1.1DecreaseinFeedwaterTemperature15.1.2IncreaseinFeedwaterFlow15.1.3ExcessiveLoadIncreaseIncident15.1.4InadvertentOpeningofaSGRelief/SafetyValve15.1.5SteamLineBreaksInsideandOutsideContainment15.1.6SGReliefValveandFeedwaterControlValveFailure15.2DecreaseinHeatRemovalbytheSecondarySystem15.2.1SteamPressureRegulatorMalfunction15.2.2LossofExternalElectricalLoad15.2.3TurbineTrip15.2.4LossofCondenserVacuum15.2.5LossofOffsitePowertotheStationAuxiliaries15.2.6LossofNormalFeedwaterFlow15.2.7FeedwaterSystemPipeBreaks15.3DecreaseinRCSFlowrate15.3.1FlowCoastdownAccidents15.3.2LockedRotorAccident15.4Reactivityand'PowerDistributionAnomaities15.4.1UncontrolledRCCAWithdrawalfromSubcritical15.4.2UncontrolledRCCAWithdrawalatPower15.4.3StartupofanInactiveReactorCoolantLoop15.4.4CVCSMalfunction15.4.5RCCAEjection15.4.6RCCADrop15.5IncreaseinRCSInventory15.6DecreaseinRCSInventory15.6.1InadvertentOpeningofaPressurizerSafetyorReliefValve15.6.2RadiologicalConsequencesofSmallLinesCarryingRCOutsideContainment15.6.3SteamGeneratorTubeRupture15.6.4PrimarySystemPipeRuptures15.6.4.1SBLOCA15,6.4.2LBLOCA15.7RadiologicalReleaseFromaSubsystemorComponent15.7.1RadiologicalGasWasteSystemFailure15.7.2RadiologicalLiquidWasteSystemFailure15.7.3FuelHandlingAccidents15.8AnticipatedTransientsWithoutScramXXChapter6,Chapter56.2.1.2ContainmentIntegrity5.2.2LowTemperatureOverpressurization05October94 GinnaStationBechtetlppeenICDRochesterC3asandElectric15.1.6SGReliefValveandFeedwaterControlValveFailure~IncreasedHeatTransferArea15.2.2LossofExternalElectricalLoad~BestBenchmarkData~OverpressureDesignTransient15.6.3SteamGeneratorTubeRupture(overfill)~~SmallerTotalVolume5.2.2LowTemperatureOverpressurization~IncreasedHeatTransferArea~ModelingEnhancements~RIM.OverpressureProtection6.2.1.2ContainmentIntegrity-SteamLineBreak~IncreasedHeatTransferAreaSmallerNozzleArea05October94 GINNARELAP5MODEL886460STEAMLNEMssv440446470876MSIV$7$8$14808$08$0MQV47$876STEAMLNE870SSC88086686017$07700802MFNPumpBHTRsoe01soe802MFWsoePumpAsoeHTR810880870mCC0i57iO7CC746MAINFEEDWATER8412MAINFEEOWATERA8'I4816$1442818418$20eeeeCo733OS$34$33431430sai422$2282e830832834733O773$O733732~733Oago733OI10'ILlgla~1$~'16~18'08O7Qe+2126O'Iaaaol733oe733oe734733O3733O733OI726OI'02420el6426%1eaao7saaoLl3eag833O383/O833OIO7OJO6O4226OIIL-12-'IggeIg~'I8833Osaao833OSag833833OI12'I22122$130120220230136IIC113'11010610020020621021321623613$1461701761$02$0276270as6238Iio140RcPumpB146REACTORVESSELRC240PumpA2e6Ig$16826824$160166266260

Ginnareactorvesselandcoremodelhotleg102350106302360eakagepathupperplenum354352upperplenum368hotlegnozzle10'03100coldlegnozzle326324105coldlegnozzle320318316330328312375310380

GinnaStationBechtelC)RochesterGasandFtectrfcSGReliefValveandFeedwaterControlValveFailure~ResponseLessSeverethanOSGInitialPressureisHigherFeedwaterValveisclosertofullopen~ReactorTripnotPredicted'5October94 1.14RGE-CombinedValveFailureEventComparisonofOSGandRSG1.121.101.08U1.06001.04O6$U1.021.00//////////////////Fractionoffullpower-OSG----Fractionoffullpower-RSG1020304050Transienttime,Sec RochesterGasandElectrtcLossofExternalElectricalLoad~PeakPrimaryPressureUnchangedReactorTriponHighPressureUnchanged~PeakSecondaryPressureSlightlyHigher,AcceptableHigherInitialPressure05October94

2800RGE-LossofElectricLoad-RELAPSdataComparisonofOSGandRSGacceptancecriterion2600(0~~CLQ2400CLLN2200-pzrpressure-OSGPzrPressure-RSGIIQHBNBIHI20001020304050Transienttime,sec RGE-LossofElectricold-RELAP5data.ComparisonofOSGandRSG1200CUM1100CL0)(p1000CL900(3GO(I(IllIUtlINKlNIIRillggllgglgllllgiacceptancecriterion-SGdomepress-OSGI-SGDOMEP-RSG800'102030TTransienttime,sec4050

AHDGinnaStationBechteglpldflICDRochesterGasandElectricSteamGeneratorTubeRuptureMoreMargintoOverfillSmallerBreakAreaduetoSmallerTubeHigherInitialSecondaryPressureReleaseRatesLower05October94

RGEOSG/RSGSGTRCOMPARISONUSINGR5/M2VER20HPLEGEND-OSG-RSGgg800001200Time(sec)200028003200 RGEOSG/RSGSGTRCOMPARISONUSINGRS/M2VER20HPLEGENDOSG-ARSG-A02400aQl600C00l600Time(sec)'00028003200 GinnaStationBechtellpmpson'RochesterGasandElectricLowTemperatureOverpressurizationModelimprovementsAccountedforLoopDelta-P'sPotentialFlowChokingatPORVModeledExplicitRHRSystemModelforLimitingRHROverpressurizationCaseDetailedPumpStartModelingInstrumentTolerancesIncludedRCSMetalMassModelledResults~AllAcceptanceCriteriaMet~LimitingTransientsUnchanged~AnalysiswillbeGinnaAnalysisofRecord05October94 RHRSYSTEMMODELPrimaryLoop(LTOPActiveLoop)HotLegPrimary(inactiveLoop)ColdLeg100280450469sink453RHRpumpB462HeatexchangerB463RHRReliefValve468451452473472455461460457454RHRpumpAHeatexchangerA475456

RESULTSOFLTOPRUNSIDDescriptionPeakpressureAllowableperMarginPeakpressureStructuralMarginintheReactorAppendix6inpsiinRHRsystemallowableinpsiVessel,psiainpsiainpsiainpsiaCase1Massadditioncase85>Fprimary480.19554.774.51598.43674.7076.27Case2Heatadditioncase85<Fprimary548.84554.75.86643.22674.7031.48Case3Heatadditioncase320>Fprimary565.291664.71099.41657.08674.7017.62Note:InCase3,thepeakRVpressureoccursat21.6secsandthepeakRHRsystempressureoccursat10.7secs.lnCase1,thepeakRVpressureistakenfromthestripfileoftheplotoftheparameter,P3)p

GinnaStationBechtellpmpsonIRochesterGasandElectricContainmentIntegrity-MainSteamlineBreak18CasesAnalyzed~RELAP/CONTEMPT~AllResultsAcceptable,LowerPeakPressure(-56psig)DetailedModelingOfFeedwaterSystemFlowRestrictorComparableInitialInventories05October94

Preliminaryesults,WorstCaseSteamLineBreak1.1SplitBreak,MSlVFailure6050(302.5s,55.966940a30~IO.T20100050150Time,sec250300350400 GinnaStationBechteglLp4ce<<ICDRochesterGasandElectn'c~NewWestinghouseFuelFabricationContract~InsertVantage-5Fuelvs.OFAFuelF.IncreaseFrom1.66TO1.75F,<IncreaseFrom2.32.TO2.50~WillIncorporateNewSG'sInNewAnalysis~CycleLengthIncreaseFromAnnualTo18MonthsIncreaseSFPEnrichmentLimitFrom4.25w/oTo5.0w/oTvEWindowOf559'o573.5'ccidentAnalysisWillBeValidOverTheWindowRedoReactorVesselInternalAnalysisUsingLBB05October94 GinnaStationiBechtelCDRochesterGasandElectricTYpeFuelRodO.D.14X14OFA0.40InVantage50.40InFuelCladdingMaterialZ,4Z,4ActiveFuelLength141.4In141.4InBlanketRegion/EnrichmentCenterRegionEnrichment6In/Nat.UpTo4.25w/o6In/2.6w/oUpTo5.0w/oBottomNozzlesDFBNDFBNGrids2TopAndBottom7MidIntermediateFlowMixingDischargeBurnupsINCONEL-718Z,4NoneLow40sGWD/MTUINCONEL-7,18Z,4NoneMid50sGWD/MTU05October94 cnfQcC4P>2>9OCICJ68ClcnCa6O~OCPUgO~Oc5Ocn~Beog8O<acnCJg7a00+QOCQOCcn~VlM~~V15OCVC5)O-"EOCIQOU>,c'aRQ<VsO~C6>).v~aJDcnClx0ŽgC4cRQXACVCVaXC0MEgOOc5cOcnC4+cn+uotDOOcncncncn00hlcnFdClgg"v4aOCpubcn~~cnO0OOO~OC8C5VsOCCOO~a5OOU'~OOgcCRQ0000OOOcC~DR)Oc5CCC400000CO000gVQ~~ca<<~HKUM4l&~cfI/jIQI/j GinnaStationewiIBechtel,[IRochesterGasandElectric1996FuelReload15.515.615.715.8IncreaseinRCSInventoryDecreaseinRCSInventory15.6.1InadvertentOpeningofaPressurizerSafetyorReliefValve15.6.2RadiologicalConsequencesofSmallLinesCarryingRCOutsideContainment15.6.3SteamGeneratorTubeRupture15.6.4'PrimarySystemPipeRuptures15.6.4.1SBLOCA15.6.4.2LBLOCARadiologicalReleaseFromaSubsystemorComponent15.7.1RadiologicalGasWasteSystemFailure15.7.2RadiologicalLiquidWasteSystemFailure15.7.3FuelHandlingAccidentsAnticipatedTransientsWithoutScramEVALUATEXXXXXXANALYZEXXXChapter6,Chapter56.2.1.2ContainmentIntegrity5.2.2LowTemperatureOverpressurizationX(8WNT)05October94

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GinnaStationBechtelC)RochesterGasandElectricUseWestinghouse.QuestionCOBRA/TRAC?Addendum04Or?AddendumP3B.E.Addendum44AddendumP3-2200'CT-100'CTImprovement?NRCApprovalSteadyStateInitializationComplete.NeedToStartTransientRunsOctober9,1994I05October94

AHOGinnaStationBechtel2)cDRochesterGasandElectncImplementationFebruary1996~COLR~PTLRNoNeedforNRCSubmittal05October94 r

GinnaStationBechtelLppeonRochesterGasandElectrfcDataPreparationFinalizeInputDataStartAnalysisDraftReportFinalReport4/1/949/30/949/30/945/1/957/1/95SubmitReportToNRCCycle26Startup8/1/955/30/9605October94 GinnaStationBechtetCDRochesterGasandElectricRE.GINNASTEAMGENERATORREPLACEMENTSTRUCTURALEVALUATIONOFEFFECTEDCOMPONENTS4SYSTEMS05October94

38MAINSTEAMLINESTEAMGENERATORIA38MAINSTEAMLINESTEAMGENERATORIREACTORCOOLANTPUMPIBIC-FEEOWATERI.INEIRFEEOHATERLINEUPPERSUPPORTSANOSNUBBERS{TVP.)COLOLEGHOTLEGHOTLEGINTERMEOIATESuPPORTSITVP.)CROSSOVERLEGCOLOLEGLOWERSUPPORTSITYP.)REACTORCOOLANTPUMPIAREACTORVESSELVIEWOFNSSSSYSTEMFORGINNANUCLEARSTATION

GinnaStationIBechtelCDRochesterGasandElectricREACTORCOOLANTSYSTEMPIPINGANALYSISScopeChanges+5%Deadweight+1ftCenterofGravityModelDevelopmentBenchmarkingModelEnhancementsExpectedResultsCunentStatus/SchedulePreliminaryPipingResultsVessel/SupportEvaluationsAttachedPipingEvaluationsScheduledCompletion12/1/9405October94

~leytav BENCFB4ARKRESULTSMODALRESPONSE~GinnaStationEIec~htel/Oson~CDCDRochesterGasandElectricPARTICIPATINGCOMPONENTRCPUMP-LOOPARCPUMP-LOOPBRCPUIVIP-LOOPARCPUMP-LOOPBS/G-LOOPAS/G-LOOPBS/G-LOOPAS/G-LOOPBRCPUIVIPLOOPARCPUIVIPLOOPARCPUMPLOOPARCPUMPLOOPBS/G-LOOPAS/G-LOOPBREACTORVESSELREACTORVESSELRCPUMP-LOOPAS/G-LOOPBS/G-LOOPAMODALDIRECTIONZ-TRANSLATIONZ-TRANSLATIONX-TRANSLATIONX-TRANSLATIONX-TRANSLATIONZ-TRANSLATIONZ-TRANSLATIONX-TRANSLATIONZ-TRANSLATIONZ-TRANSLATIONZ-TRANSLATION2-TRANSLATIONY-TRANSLATIONY-TRANSLATIONX-TRANSLATIONZ-TRANSLATIONX-TRANSLATIONZ-TRANSLATIONZ-TRANSLATIONB&WMODELFREQUENCY(Hz)5.09925.21356.69926.7857.78428.05938.16398.524111.23613.04513.35313.80315.12915.16818.64419.67923.48324.87225.496WMODELFREQUENCY(Hz)4.945.066.536.657.698.158.288.6512.513.013.313.615.115.117.922.523.923.624.3PERCENTDIFFERENCE3%3%3%2%1%-1%1%-1%-10%p%p0%0%4%13%2%5%005October94 GinnaStationiBechtelj',RochesterGasandElectricBKNCM4ARKRKSVLTSOBKVESSELNOZZLELOADSVesselNozzleReactorVessel%Difference(LoopAil3)~HotLeg~ColdLeg22%/83%8%/12%SteamGenentor~HotLeg~PumpSuction24%/84%15%/17%RCPump~PumpSuction~PumpDischarge(ColdLeg)13%/14%12%/30%PercentagesallIndicateanINCREASEinCalculatedLoadOverthatoftheCurrentAnalysis.05October94 RochesterGasandElectricMODELENHANCEMENTS/DIFFERENCESConsistentMassModelingExplicitModelingofSupportsFrequencyCutoff@30HzN-411DampingSingleAnchorPoint3SingleSpectraCloselySpacedModesVia10%RuleExplicitACPAnalysisforHELB05October94 GinnaStationBechtetCDRochesterGasandElectricZ14~4~I~ISI~IS~t104401104ZStt~411ll~~1014ZI~~14ZZO~t0ttt~10t10414t10~14tI~~S410~1~t40IS4OZIOI44ZOI0IZWVIEWB-8SOSSISO00'OV00lI~0XI11~SZS1Itll~SZSli0Sll1~4~St14t~SO104~StZ00~44101~SS0I0ZOISIZSI~ZOZSI~100010SI~114~44ZSS~I~~14~It110~10t1~~4111~~44t10~00~40 GinnaStationBechte/ISOARochesterGasandElectric5QIANSl~1l~Sl~1I0IIISSLILoopSSOSOO~IOO~ISILt~O~4~1--r-.-gOt'ItIOOSSOOL.OOP2~I1~I~/gII~IO~I~~IS~I~~11/14~11~I~~,tLLSISOS8 GInnaStattonetvt+'tvttBechejtANORochesterGasandElecvic~7591SJ770~7582I'6275577J(REF.POINT)TEOA60VEICOE2JS750i2JS21'5477275J77I751~7SS~755~754J74'S/GLOWERLATERALSUPPORTS~QI0JSJ'J4JI00J29'I2~OeQlJI~~OSI9I4JI2i0~RPPIÃTLOCATION~409I5280'ICPTIEICOSAI4)STEAHGE%RATTHIOCRlATERALSLPPOIITS~JO~osJ~QS4~905QIS255'UYESEEaczv5INTERIORSTRUCTLHEEYUSHIELO6UILDINGWALLMODEL GinnaStationBechtegl/pion~RochesterGasandElectricCURRENTEXPECTATIONDeadweight-Increase(<5%)Thermal-SameSeismic-UnknownModelEnhancementsDecreaseLoads-ColdLeg.IncreaseLoads-HotLegIncreasedWeightOverallEffect-LoadsIncrease-MoreMarginforColdLeg'-LessMarginforHotLegLOCA-Inctiase(<15%)BlowdownInitialConditionsWillUse15'FReducedTVGHELB-Decease05October94 4

'C0fGinnaStationIBechte/RochesterGasandF/ectr/cIPIPINGSTRESSESANSI831.1EQUATIONNo.Equation11(DW.+Press)Equation12-Upset/Design(DW+Press+OBE)Equation12-Emerg.(DW+Press+SSE)RCSPIPINGSEGMENTHOTLEGCOLDLEGPUMPSUCTIONHOTLEGCOLDLEGPUIVIPSUCTIONHOTLEGCOLDLEGPUMPSUCTION88cWMODELPIPINGSTRESS(Ksi)63%52%48%61%56%47%4546%38%WMODELPIPINGSTRESS(Ksi)43%41%41o/o4p41%41%30oio30%30%Equation12-FaultedHOTLfG(DW+Press+COLDLEG(SSE+DBPRP)PUIVIPSUCTION47%41%37%4p4p40%Equation13IVlaxThermalRange+OBEEquation14MaxThermalRange+OBE+DW+PressHOTLEGCOLDLEGPUMPSUCTIONHOTLEGCOLDLEGPUMPSUCTION61%19%9%61%29%22o/o36%20%27%3825%35%05October94 GinnaStationBecht/ettthnttSCn~RochesterGasandElectricPROPOSEDINSTALLATIONOVERVIEWDuring1995'peratingCycle~ReceiveRSGs~SiteImprovements/Buildings~TowerCraneforDomeAccess~ErectConstructionEquipmentonDome~Drill/CutOuterLayer(~6"-8")~PositionLampsonTransilift~TransportEcStandRSGsOutsideContainmentColdShutdown/DefuelingSetupAuxiliaryCraneInitiateConcrete/RebarRemovalfromDomeRemoveInterferencesfromInteriorofDomeRemoveInterferencesfromAroundOSGsCutSecondarySidePiping(MS,FDWTR)SetupEquipmentforRCSCuttingDECON/EncapsulateOS6ExteriorSetupBackupSpentFuelPoolCooling05October94 0

(>>pinnaSlaliontBechtelRochesterGasandElectricPROPOSEDINSTALLATIONOVERVIEW(Continued)ReactorDe-Fueled(SGR"Window")I~Cut/RemoveDomeLiner~CutRCSPiping0RemainingSecondaryLines(B/D,Level)~Lift/RemoveOSGs&Lift/InstallRSGs~Refit/ReweldLinerforDome~EstablishContainmentIntegrity~WeldSecondarySide&,RCSPiping~EstablishRCS&SecondarySideIntegrity~BeginReplacingRebar~BeginPouringConcretetoCloseDomeOpeningsRefueling/ColdShutdown(FuelinReactor)4CompleteRebar&,ConcreteWorkConcreteCureCompleteDomeInterferenceReplacementCompleteReplacementofInterferencesNearRSGsDisassemble/RemoveEquipmentfromContainmentStructuralIntegrityTestRCSASMESectionXILeakTestStartup/AtPowerRSGPerformanceTests/MonitoringRSGLevelControlTuningDisassemblyofDomeConstructionEquipmentDismantlingofSiteImprovements/Buildings05October94 SITEPLANGINNANUCLEARPOWERSTATION 0GlnnaStationBechtelsimpsonCDRochesterGasandElectricRCSPIPECUTI1NGCutMethod2Cut(1HotLeg;1ColdLeg)BracingDeadweightSupportsOnlyContingencyisColdLegElbowReplacementWeldingAutomaticRemoteMachineNarrowGapWeldPrep5'evelWeldBothSidestoEaseFit-Up316SSTFillerNDK~InspectperASMESectionXI~Surface;Volumetric;LeakTest~ResearchandDevelopmentIn-ProgressforISI05October94 AHOIGinnaStationBec~htelg/IQmpun>CDCDRochesterGasandElectncWELDPREPR(Typical)B21/2maxM304M-1/2 BWIGinnaStation8echtejti0$0ARochesterGasandElectncADJACENTWELDSSHOPWELDg-152)SAFEEND(FORGED316L/316LN)UTTERg-152)RS/GNOZZLE(SA-50SCL3)CLADDING(309L/300L)FKLDWELD(ER316)RCSELBOW(CAST316SST)

GinnaStationBechtelCDRochesterGasandElectrfcMovementofLampsonCraneintoProtectedAreaDuringPlantOperation~NoSwingofBoomOverSafetyRelatedStructuresTransportationofNewSG'stoStand-UpFrameDuringOperationUpendingNewSG'sforPrepWorkandInsulationInstallation~Stand-upLocationOutsideDropZone05October94

MOVEMENTOFLAMPSONCRANEINTOPROTECTEDAREADURINGOPERATIONSLIDE1 GinnaStationBechtelLppeonRochesterGasandElectricRemovalofOldSG'sColdShutdown,FuelRemovedfromContainment~SingleLiftPoint~WithinLoadDropAnalysisParametersDefinedbyDomeOpenings~EngineeredFoundationPrecludesOnlyExperiencedLTLFailure~NoMovementofLTL;SlightRotationsDuringExtractionsDownendingtoFixtureinYardEastofContainment~SGMaintainedClosetoGround~SGDoesnotPassOverSiteStructuress~TransportationtoOSGSFViaTransporter05October94

'E.>>Vg>~~ht*\)4-"or,tglk'I$'4k tt1 LAMPSONTRANSI-LIFTSCRIVEEYE(BYOTHERS)\1IIII~IIIII~III1IIIIIIIIIIIIII~PIN(NK-014PI)&KEEPERR90'INKPLATE(N-014LKI)SEENOTE11OLOSTEANGENERATORI~~~~~~~~VI(I/g)PLUGPIN(N-0)4PI)&KEEPERRPLUGII~II0I~IPARTIALELEVATIONOFOLOSTEAMGENERATORI/=I'-0

'~,11t rOC'Ip,ICC~C'%r,J~pf".~'.g-'"'~s'g;~'.lN~i),~r;.'.:.'..',4."';"pi~V~)\'~I,lg~rjl JlA~-Jyl II~'I,.1~'w'I'Ib.'I'I'IJ..1tI.tmKIJJIC.I~ItI'If~It'tt4IIIIII E\4h~i~aV.~,,vr.t,q'~!~~4.4".i',~qI.,glI

,'rgpss'!'<<14'(4C li'.?.\'g4~,;~)1i'M.~g~"'~fi',I1 lfq!tH'5 C~beg;~1lJg:kf~~l,qJA,gVJ.s+~tt'st1 GinnaStationBWIBechtglCDRochesterGasandElectricRiggingNewS/6'sMovementofCranewithLoadonEngineeredFoundations~NoMovementofLTLOnceHoistinghasBegun(LiftPosition)~SlightRotationsDuringInsertion~BoomandLoadProhibitedFromPassingOverSFP05October94 STEAMGENERATORRIGGiNGTOTHEOOZEIILSLIDE3

GinnaStationBechtellplllpOOhRochesterGasandElectricDomeConstructionOpenings~"A"S/6Hexagon,"B"S/6HexagonwithSlot~ConformstoLoadDropAnalysisParameters~S/6PrecludedfromImpactingSFP

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AEXTENTQFCHIPBACKOPENlNGOUTLlNES-(sg)iieil/iPARTIALPLANOFCONDOME GinnaStationBN~BechtelPOOhRochester'esandElectncConcreteRemovalProcess~360'upportPlatform"CROWN"(ConcreteRemovalOutsideWalkwayNetwork)~ExcavationfromTopofOpenings~NoStrongbacks~NoEnclosuresOverOpenings~UtilizesAutomatedHydraulicJackHammers05October94

"CROWN'ONCRETEREMOVALOUTSIDEWALKWAYNETWORK,au.AROUNDEXTENTOFCHIPBACKOPENINGOUTLINESIIIIII)itCaJtVEO/IS0)l~~C~~0/PARTIALPLANOFCONTAIDOMESLIDE2 glAQQAVEPJACKHA~%5MACHINESTOBEMOUOfAImROWN-o"+~IREE'~INpo-e+0-EL'IiQoCC'~Qa,dS~Ir4Q(ISi.'41P4HTlW~II,TVP.CATCHCONTAlNMENTALLAROUND~~I~P~~VEt.5RZIHGI-~H-.PBo'-8~~~~ASECTIONSECTIONALVIEWOFCONTAINNIENTDOMESHOWNG'CROWN'LIDE3 GlnnaStationBWIBecI1teIRochesterGasandElectrfcConcreteTestBlockProgramCompletedin6/94~AutomatedJackhammerDemonstration~DeterminedBestExcavationTechnique~DeterminedMachiningImpactEnergyLevel~DeterminedMachineSensitivityandOperatorControl05October94

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GinnaStationBechtelCDCDRochesterGasandElectricTestBlockConclusions~Machinewon'tDamageRebarorLiner~ConcreteBreaksCleanOffLiner~ExcavationQuantitiesSupportOutageScheduling~AdditionalEngineeringOngoingtoSupportRemovalSequencing05October94 GinnaStationBechtelCDCDRochesterGasartdEfectricRepairofContainmentDome~ReuseExistingLinerPlateCadweldRebarSplicesorStick-Weld~LeakChannelIntegrityLinerStiffenersmaybeRequired~MonolithicPour05October94 GinnaStationBechtetCDRochesterGasandElectricStructuralAnalysisContainmentOpeningDesignbyBechtelLoadDropAnalysisDictatesHoleParametersDomewithOpeningStructurallyAdequateCrownLoadingsInputtoAnalysis~RepairSequencingOngoing~RGAEContainmentModelforOvercheck05October94 CONTAMENf(gastoabe~opjuiq@)DONEOPENINGOp+S~/~S'~4~AWW.F:4'.~,lEg-~ISegrADETAILI/R~I'R~SUDE0.

~-glRochesterGasandElectricCurrentConfiguration~OneGenerator-Mirror~OneGenerator-Mirror/Asbestos~SingleSumpDesignPrecedesRG1.82HorizontalGratingVerticalScreeninSumpReplacementPlans~BlanketorBlanket/Mirror~SumpWillBeEvaluatedUpgradeToImproveWillNotMeetRG1.82PossibilityofCredittingPlatforms05October94 qeGinnaStationBechtelBitt'IPoohCDRochesterGasandElectricRPActivitiesAlreadyAddressed~WorkingwithPlantRPStaffonIssuesCommontoPlant/ProjectOutageSuccessIncentiveBasedContractorRPTechnicianSpecification/ContractMemberofLLRWTechnicalSubcommitteeElectronicDosimetryEvaluation,SelectionandFundingProjectRPInstrumentationEstimatedNeedsPurchasedMajorityfromNorthAnnaSGRPGroup~OldSteamGeneratorDisposalOptionsOn-Site'nterimStorageisCurrentPlan05October94 I

BWIGlnnaStationBechtelRochesterGasandElectricRPActivitiesAlreadyAddressed(Continued)InquiredwithVendorsonAlternativeMethodsforDispositionofOSGsWillContinuetoInvestigateAlternatives~Pipe-EndDecontaminationMethodsWitnessedTwoDifferentMethods:CO,andSpongeBlast(Demonstrations)TentativeApprovalforSpongeBlastPlantoWitnessSpongeBlastApplicationatV.C.SummerSGROutage~Man-RemIncentiveforPrimeContractor05October94 GlnnaStationBechtelIc)uRochesterGasandElectrtcOngoingActivities~,ProjectRPPlanBeingDraftedInterfaceSpecificationhasbeenCompletedandIncorporatedProcedureReviewsforIncorporationPlantCommitmentsTrackedforIncorporationV.C.SummerSGRPVisitKeyRPStaffWillWitnessImportantEvolutionsAllowIncorporationofLessonsLearnedonPipe-EndDecontamination~PrimeContractorSubmittalReviewProcedureReviewsFacilityDesigns05October94 k4 GinnaStationBWIBeeIRochesterGasandElectricOngoingActivities(Continued)SiteLayoutandPersonnelFlowpathsWorkPlansConcretePlansCraneandDomeDecontaminationDomeLinerandConcreteActivationStudyAsbestosInsulationRemovalOpticalTemplatingInterferenceModifications05October94 GinnaStationBechtelRochesterGasandElectrfcComponentPreliminarySafetyEvaluationFinalReport/50.59SafetyEvaluationSeptember1994May1995InstallationActivitiesSafetyEvaluationOfContainmentOpeningsAugust1995SafetyEvaluationofRiggingAndHandlingJuly1995SafetyEvaluationOfSteamGeneratorPipingMay1995SafetyEvaluationOfSteamGeneratorInsulationTestingandInspectionPlanMay1995June199505October94 1I