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.I EY1(ACCELERATED RIDSPROCESSIVEGREGULATORY INFORMATXON DXSTRXBUTION SYSTEM(RIDS)ACCESSION NBR:9412010209 DOC.DATE:94/11/23NOTARIZED:

NOFACIL:50-244 RobertEmmetGinnaNuclearPlant,Unit1,Rochester GAUTH.NAMEAUTHORAFFILIATION MECREDY,R.C.

Rochester Gas&ElectricCorp.RECIP.NAME RECIPIENT AFFXLIATION JOHNSON,A.R.

ProjectDirectorate I-3

SUBJECT:

Providessummaryofpublicmeetingon941005w/utiltoprovideupdateonevaluation ofsteamgenerator replacement

&fuelreloadchangesatplant.,currently scheduled forspringof1996.DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:

GeneralDistribution DOCKET1205000244NOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72).

05000244RECIPIENT IDCODE/NAME PD1-3LAJOHNSON(A TNTERNA:FILECENTEB01RR/DRCK/HI CBNRR/DSSA/SPLB NUDOCS-ABSTRACT=

EXTERNAL'OAC COPIESLTTRENCL11111111111111RECIPIENT IDCODE/NAME PD1-3PDNRR/DE/EELB NRR/DRPWNRR/DSSA/SRXB OGC/HDS3NRCPDRCOPIESLTTRENCL1111111110NOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEiVASTE!CONTACT'I'HE DOCL'WIENTCONTROL DESK,ROONIPI-37IEXT.504-20S3)TOELIifINATEYOI'RNAZIEFROifDISTRIBUTION LIS'I'SI'ORDOCLMEN'I'SYOI.'ON"I'L'ED!TOTALNUMBEROFCOPIES,REQUIRED:

LTTR13ENCL12 AHnROCHESTER GASANDEIECTRICCORPORATION

~89FASTAVENIJE, ROCHESTER, N.YIrI&9-0001 ARFACODE716546-2700ROBERTC.MECREDYVicePresident NvdearOperations November23,1994U.S.NuclearRegulatory Commission DocumentControlDeskAttn:AllenR.JohnsonProjectDirectorate I-3Washington, D.C.20555

Subject:

PublicMeetingonOctober5,1994todiscussSteamGenerator Replacement andFuelReloadChangesfor1996R.E.GinnaNuclearPowerPlantDocketNo.50-244

DearMr.Johnson:

OnOctober5,1994apublicmeetingwasheldbetweenRochester GasandElectricstaffandmembersoftheNRCtoprovideanupdateontheevaluation ofthesteamgenerator replacement andfuelreloadchangesatGinnaStation,currently scheduled forthespringof1996.Thepurposeofthepresentations wastodemonstrate thattheSteamGenerator Replacement Projectcouldproceedwithintheprovisions of10CFR50.59.

Thisletterprovidesasummaryofthemeeting.RG&Epresented theresultsoftheaccident/transient preliminary safetyevaluation, including thefiveaccident/transients whichwereanalyzedindetail.Thisevaluation hadbeenpreviously providedtothestaff.RG&Enotedthatitisourintention tomaketheanalysisoftheLowTemperature Overpressurization transient performed forthisprojecttheanalysisofrecordforGinnaStation.Thestaff(MarkCaruso)statedthatformalNRCreviewofthisanalysiswasnotrequired.

RG&Epresented thestatusofthe1996FuelReloadAnalysis.

Itwasrequested thatthestaffexpeditethereviewoftheWestinghouse COBRA-TRAC LOCAmethodology, Addendum3,sincetheresultsofthisreviewcouldimpacttheanalysisforthereload.Thestaffresponded thattheywereawareoftheneedtofinishthisreview.RG&Ealsonotedthatwiththeproposedtransition toImprovedStandardTechnical Specifications, therewouldbenoneedforanyLicenseAmendment Requeststosupportthe1996FuelCycle.RG&Efollowedwithapresentation ontheresultsoftheprimarysystempipingstressanalysisresults.Thepresentation indicated thatallacceptance criteriacontinued tobemet.RG&Ealsopresented anoutlineofthecurrentproposedmethodology forinstalling thereplacement steamgenerators.

Thispresentation onnnC.Q9412010209 941i23PDRADQCK05000244pPDR00 40I' includedchangesfrominformation previously presented mostnotablythemethodofremovalofconcretefromthecontainment.

Mock-uptestinghasdemonstrated thatremovaloftheconcreteusingautomated hydraulic jackhammersispreferred overotheravailable options.Detailedinformation ontheriggingscheme,haulroutes,insulation andpipecuttingandweldingwasalsopresented.

Finally,RG&Epresented ourplansregarding theextensive radiological protection measuresbeingcontemplated, including ourplansfororiginalsteamgenerator on-sitestorage;purchaseanduseofdosimetry; pipe-enddecontamination methods;domedecontamination; andadomelinerandconcreteactivation study.NRCstaffindicated thatallanalysestodateappearedtobesatisfactory, andnochallenges tothe10CFR50.59 processbeingproposedbyRGGEwereenvisioned.

Attachedarecopiesofthepresentation overheads fromthemeeting.RGGEappreciates thevaluableinputandcooperation providedbythestaffatthismeeting.Verytrulyyours,RobertC.MecredyAttachment BJF/354xc:Mr.AllenR.Johnson(MailStop14D1)ProjectDirectorate I-3Washington, D.C.20555U.S.NuclearRegulatory Commission RegionI475Allendale RoadKingofPrussia,PA19406USNRCGinnaSeniorResidentInspector 0JJ~4e

~9412010209 GinnaStationBechtelRochester GasandElectricGinnaStationSteamGenerator Replacement NRCStatusUpdateOctober5,1994I.INTRODUCTION II.PROJECTSTATUS/OVERVIEW Fabrication StatusInstallation StatusG.WrobelB.CarrickIII.RSGSAFETYEVALUATION Preliminary SafetyEvaluation AccidentAnalysesContainment AnalysisLowTemperature Overpressurization IV.1996FUELRELOADB.FlynnR.Eliasz~SteamGenerator Replacement Interface

~ImprovedTechnical Specifications Interface LUNCHV.RCSPIPINGANALYSISB.CarrickVI.REPLACEMENT STEAMGENERATOR INSTALLATION RCSPipeCutting/Welding RiggingScheme/Drop AnalysisContainment DomeOpeningsSteamGenerator Insulation/Containment SumpAnalysisVII.RADIOLOGICAL PROTECTION MEASURESVIII.SUBMITTAL SCHEDULEB.CarrickM.Fitzsimmons B.FlynnA.HermanB.FlynnOSOctober94 JY fGinnaStationBechtel8'lVI~QmpsonRochester GasandElectricOVERVIEWTwoLoopWNSSSBA,W"Like-in-Kind" Replacement SGsInstallViaConstruction OpeningsinContainment DomeSpring,1996Outage67DaysBreaker-to-Breaker Outage05October94

+GinnaStationBechtellpmpsonRochester GasandElectricFABRICATION STATUSLowerShellAssyNDEPriortoPWHTUpperShellAssyInFabrication BundleInternals InFabrication Tubes(I-690)PPQ-2@VALINQXSteamSeparators/Upper BundleAssyInFabrication Feedwater HeaderPartsonOrder05October94 Babcock&WilcoxCanadaAdvancedSeries.PWRReplacement SteamSteamnoateHgnethctency motetureseParstors SundleInspection accessduct~Feodwetef InletgFeedwstor headerStemlesssleetIOCUceelal tuho'suppore gnd~I)~SIOWdOWnheaderntNSnIIH~lt~.~fr.~IntegralvsrtrcalsupportvIPnmarynoastePnmarystdemanwsytheronesIetmtndgxwosouletdenleneton~endotetvloetloAnonco conetweto nIhelelms~IOWntlenetNte endteecletteenewnenle~ocrtonIormecenotnteeeoorymooetwnnl~nchteeehtohcttcltlerlnI tense~oltnetewctotoelondootetntoneetIIegnoton

~ueenottnotdnooeuooon\~Icanotnoteenootnnmdorr~ITthermo~enteteendsotetoeweterneIsntttere IAwteetolHIetteesntoolnntwtnstced Iotenon~eormntlhweetneedtlrtwnnoSelsellonow~oeoeteltne contsnene o'%teteIooeoOeno~/ectleewmwwcoonenoeettnenmce

GinnaStationIBechteliBWIIsimpson<CDRochester GasandElectricINSTALLATION STATUSDetailedConceptual StudiesCompleted MajorSubvendors Identified BechtelProceeding withEngineering 1995OutageScopeEstablished 199SOutageas"DryRun"Engineering Construction PlanningAdministrative Radiation Protection 05October94

GinnaStationBechtellpmpocnRochester GasandElectricVEvents~UFSARChapter15Transient Analyses~UFSARChapter6Containment Integrity UFSARChapter5Overpressure DesignTransients Method~IdentifyAcceptance Criteria~IdentifyPertinent Parameters

~EvaluateChange:Benefit/Detriment

/NoeffectResults~Acceptance CriteriaforAllEventsMet~OnlyFiveTransients RequiredDetailedAnalysis05October94 AHOR.E.GinnaSteamGenerator Replacement Equipment Comparison GinnaStationBVVIBee%el~PICNlRochester GasandElectricManuf./Model PrimarySidePressureDrops(0%plug)NozzleinlettoNozzleoutletPrimarySideFlowforabovedp'sHeatTransferAreas0%Plugging15%Plugging20%PluggingTubingOutsideDiameter Avg'.WallThickness NumberofTubesMaterialVolumes,primarysideInletPlenumTubesOutletPlenumExistingW/44(feedring) 33.5psi34.6E06Ibm/hr44430sq.ft.37765sq.ft.0.875in0.050in3260Inconel600,MA133cu.ft.675.5cu.ft.133cu.ft.Replacement BWI(feedring) 31.0psi35.0E06ibm/hr54001sq.ft.43200sq.ft.0.750in0.0431in4765Alloy690,TT130cu.ft.710cu.ft.130cu,ft.,Secondary Volume,TotalSecondary WaterMass,nominal100%(1520MWt)0%(HZP)Secondary MassFlow,100%SteamLineOrificeSizeInitialSteamPressure, 100%4580cu.ft.85,410ibm130,120ibm3.3E06ibm/hr4.37sq.ft.830psia4513cu.ft.86,257ibm118,836ibm3.3E06ibm/hr1.4sq.ft.877psia005October94 GinnaStationBechtelCDRochester GasandElectricEVALUATEANALYZEXXXXXXXXXX'XXXXXXXXXXX15.1IncreaseinHeatRemovalbytheSecondary System15.1.1DecreaseinFeedwater Temperature 15.1.2IncreaseinFeedwater Flow15.1.3Excessive LoadIncreaseIncident15.1.4Inadvertent OpeningofaSGRelief/Safety Valve15.1.5SteamLineBreaksInsideandOutsideContainment 15.1.6SGReliefValveandFeedwater ControlValveFailure15.2DecreaseinHeatRemovalbytheSecondary System15.2.1SteamPressureRegulator Malfunction 15.2.2LossofExternalElectrical Load15.2.3TurbineTrip15.2.4LossofCondenser Vacuum15.2.5LossofOffsitePowertotheStationAuxiliaries 15.2.6LossofNormalFeedwater Flow15.2.7Feedwater SystemPipeBreaks15.3DecreaseinRCSFlowrate15.3.1FlowCoastdown Accidents 15.3.2LockedRotorAccident15.4Reactivity and'Power Distribution Anomaities 15.4.1Uncontrolled RCCAWithdrawal fromSubcritical 15.4.2Uncontrolled RCCAWithdrawal atPower15.4.3StartupofanInactiveReactorCoolantLoop15.4.4CVCSMalfunction 15.4.5RCCAEjection15.4.6RCCADrop15.5IncreaseinRCSInventory 15.6DecreaseinRCSInventory 15.6.1Inadvertent OpeningofaPressurizer SafetyorReliefValve15.6.2Radiological Consequences ofSmallLinesCarryingRCOutsideContainment 15.6.3SteamGenerator TubeRupture15.6.4PrimarySystemPipeRuptures15.6.4.1SBLOCA15,6.4.2LBLOCA15.7Radiological ReleaseFromaSubsystem orComponent 15.7.1Radiological GasWasteSystemFailure15.7.2Radiological LiquidWasteSystemFailure15.7.3FuelHandlingAccidents 15.8Anticipated Transients WithoutScramXXChapter6,Chapter56.2.1.2Containment Integrity 5.2.2LowTemperature Overpressurization 05October94 GinnaStationBechtetlppeenICDRochester C3asandElectric15.1.6SGReliefValveandFeedwater ControlValveFailure~Increased HeatTransferArea15.2.2LossofExternalElectrical Load~BestBenchmark Data~Overpressure DesignTransient 15.6.3SteamGenerator TubeRupture(overfill)

~~SmallerTotalVolume5.2.2LowTemperature Overpressurization

~Increased HeatTransferArea~ModelingEnhancements

~RIM.Overpressure Protection 6.2.1.2Containment Integrity

-SteamLineBreak~Increased HeatTransferAreaSmallerNozzleArea05October94 GINNARELAP5MODEL886460STEAMLNEMssv440446470876MSIV$7$8$14808$08$0MQV47$876STEAMLNE870SSC88086686017$07700802MFNPumpBHTRsoe01soe802MFWsoePumpAsoeHTR810880870mCC0i57iO7CC746MAINFEEDWATER 8412MAINFEEOWATER A8'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)Rochester GasandFtectrfcSGReliefValveandFeedwater ControlValveFailure~ResponseLessSeverethanOSGInitialPressureisHigherFeedwater Valveisclosertofullopen~ReactorTripnotPredicted'5 October94 1.14RGE-CombinedValveFailureEventComparison ofOSGandRSG1.121.101.08U1.06001.04O6$U1.021.00//////////////////Fractionoffullpower-OSG----Fractionoffullpower-RSG1020304050Transient time,Sec Rochester GasandElectrtcLossofExternalElectrical Load~PeakPrimaryPressureUnchanged ReactorTriponHighPressureUnchanged

~PeakSecondary PressureSlightlyHigher,Acceptable HigherInitialPressure05October94

2800RGE-LossofElectricLoad-RELAPSdataComparison ofOSGandRSGacceptance criterion 2600(0~~CLQ2400CLLN2200-pzrpressure-OSGPzrPressure-RSGIIQHBNBIHI 20001020304050Transient time,sec RGE-LossofElectricold-RELAP5data.Comparison ofOSGandRSG1200CUM1100CL0)(p1000CL900(3GO(I(IllIUtlINKlNIIRillggllgglg llllgiacceptance criterion

-SGdomepress-OSGI-SGDOMEP-RSG800'102030TTransient time,sec4050

AHDGinnaStationBechteglpldflICDRochester GasandElectricSteamGenerator TubeRuptureMoreMargintoOverfillSmallerBreakAreaduetoSmallerTubeHigherInitialSecondary PressureReleaseRatesLower05October94

RGEOSG/RSGSGTRCOMPARISON USINGR5/M2VER20HPLEGEND-OSG-RSGgg800001200Time(sec)200028003200 RGEOSG/RSGSGTRCOMPARISON USINGRS/M2VER20HPLEGENDOSG-ARSG-A02400aQl600C00l600Time(sec)'00028003200 GinnaStationBechtellpmpson'Rochester GasandElectricLowTemperature Overpressurization Modelimprovements Accounted forLoopDelta-P'sPotential FlowChokingatPORVModeledExplicitRHRSystemModelforLimitingRHROverpressurization CaseDetailedPumpStartModelingInstrument Tolerances IncludedRCSMetalMassModelledResults~AllAcceptance CriteriaMet~LimitingTransients Unchanged

~AnalysiswillbeGinnaAnalysisofRecord05October94 RHRSYSTEMMODELPrimaryLoop(LTOPActiveLoop)HotLegPrimary(inactive Loop)ColdLeg100280450469sink453RHRpumpB462Heatexchanger B463RHRReliefValve468451452473472455461460457454RHRpumpAHeatexchanger A475456

RESULTSOFLTOPRUNSIDDescription PeakpressureAllowable perMarginPeakpressureStructural MarginintheReactorAppendix6inpsiinRHRsystemallowable inpsiVessel,psia inpsiainpsiainpsiaCase1Massadditioncase85>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

GinnaStationBechtellpmpsonIRochester GasandElectricContainment Integrity

-MainSteamline Break18CasesAnalyzed~RELAP/CONTEMPT

~AllResultsAcceptable, LowerPeakPressure(-56psig)DetailedModelingOfFeedwater SystemFlowRestrictor Comparable InitialInventories 05October94

Preliminary esults,WorstCaseSteamLineBreak1.1SplitBreak,MSlVFailure6050(302.5s,55.966940a30~IO.T20100050150Time,sec250300350400 GinnaStationBechteglLp4ce<<ICDRochester GasandElectn'c~NewWestinghouse FuelFabrication Contract~InsertVantage-5Fuelvs.OFAFuelF.IncreaseFrom1.66TO1.75F,<IncreaseFrom2.32.TO2.50~WillIncorporate NewSG'sInNewAnalysis~CycleLengthIncreaseFromAnnualTo18MonthsIncreaseSFPEnrichment LimitFrom4.25w/oTo5.0w/oTvEWindowOf559'o573.5'ccident AnalysisWillBeValidOverTheWindowRedoReactorVesselInternalAnalysisUsingLBB05October94 GinnaStationiBechtelCDRochester GasandElectricTYpeFuelRodO.D.14X14OFA0.40InVantage50.40InFuelCladdingMaterialZ,4Z,4ActiveFuelLength141.4In141.4InBlanketRegion/Enrichment CenterRegionEnrichment 6In/Nat.UpTo4.25w/o6In/2.6w/oUpTo5.0w/oBottomNozzlesDFBNDFBNGrids2TopAndBottom7MidIntermediate FlowMixingDischarge BurnupsINCONEL-718 Z,4NoneLow40sGWD/MTUINCONEL-7,18 Z,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,[IRochester GasandElectric1996FuelReload15.515.615.715.8IncreaseinRCSInventory DecreaseinRCSInventory 15.6.1Inadvertent OpeningofaPressurizer SafetyorReliefValve15.6.2Radiological Consequences ofSmallLinesCarryingRCOutsideContainment 15.6.3SteamGenerator TubeRupture15.6.4'Primary SystemPipeRuptures15.6.4.1SBLOCA15.6.4.2LBLOCARadiological ReleaseFromaSubsystem orComponent 15.7.1Radiological GasWasteSystemFailure15.7.2Radiological LiquidWasteSystemFailure15.7.3FuelHandlingAccidents Anticipated Transients WithoutScramEVALUATEXXXXXXANALYZEXXXChapter6,Chapter56.2.1.2Containment Integrity 5.2.2LowTemperature Overpressurization X(8WNT)05October94

)

GinnaStationBechtelC)Rochester GasandElectricUseWestinghouse.

QuestionCOBRA/TRAC

?Addendum04Or?AddendumP3B.E.Addendum44AddendumP3-2200'CT-100'CTImprovement

?NRCApprovalSteadyStateInitialization Complete.

NeedToStartTransient RunsOctober9,1994I05October94

AHOGinnaStationBechtel2)cDRochester GasandElectncImplementation February1996~COLR~PTLRNoNeedforNRCSubmittal 05October94 r

GinnaStationBechtelLppeonRochester GasandElectrfcDataPreparation FinalizeInputDataStartAnalysisDraftReportFinalReport4/1/949/30/949/30/945/1/957/1/95SubmitReportToNRCCycle26Startup8/1/955/30/9605October94 GinnaStationBechtetCDRochester GasandElectricRE.GINNASTEAMGENERATOR REPLACEMENT STRUCTURAL EVALUATION OFEFFECTEDCOMPONENTS 4SYSTEMS05October94

38MAINSTEAMLINESTEAMGENERATOR IA38MAINSTEAMLINESTEAMGENERATOR IREACTORCOOLANTPUMPIBIC-FEEOWATER I.INEIRFEEOHATER LINEUPPERSUPPORTSANOSNUBBERS{TVP.)COLOLEGHOTLEGHOTLEGINTERMEOIATE SuPPORTSITVP.)CROSSOVER LEGCOLOLEGLOWERSUPPORTSITYP.)REACTORCOOLANTPUMPIAREACTORVESSELVIEWOFNSSSSYSTEMFORGINNANUCLEARSTATION

GinnaStationIBechtelCDRochester GasandElectricREACTORCOOLANTSYSTEMPIPINGANALYSISScopeChanges+5%Deadweight

+1ftCenterofGravityModelDevelopment Benchmarking ModelEnhancements ExpectedResultsCunentStatus/Schedule Preliminary PipingResultsVessel/Support Evaluations AttachedPipingEvaluations Scheduled Completion 12/1/9405October94

~leytav BENCFB4ARK RESULTSMODALRESPONSE~GinnaStationEIec~htel/Oson~CDCDRochester GasandElectricPARTICIPATING COMPONENTRCPUMP-LOOPARCPUMP-LOOPBRCPUIVIP-LOOPARCPUMP-LOOPBS/G-LOOPAS/G-LOOPBS/G-LOOPAS/G-LOOPBRCPUIVIPLOOPARCPUIVIPLOOPARCPUMPLOOPARCPUMPLOOPBS/G-LOOPAS/G-LOOPBREACTORVESSELREACTORVESSELRCPUMP-LOOPAS/G-LOOPBS/G-LOOPAMODALDIRECTION Z-TRANSLATION Z-TRANSLATION X-TRANSLATION X-TRANSLATION X-TRANSLATION Z-TRANSLATION Z-TRANSLATION X-TRANSLATION Z-TRANSLATION Z-TRANSLATION Z-TRANSLATION 2-TRANSLATION Y-TRANSLATION Y-TRANSLATION X-TRANSLATION Z-TRANSLATION X-TRANSLATION Z-TRANSLATION Z-TRANSLATION B&WMODELFREQUENCY (Hz)5.09925.21356.69926.7857.78428.05938.16398.524111.23613.04513.35313.80315.12915.16818.64419.67923.48324.87225.496WMODELFREQUENCY (Hz)4.945.066.536.657.698.158.288.6512.513.013.313.615.115.117.922.523.923.624.3PERCENTDIFFERENCE 3%3%3%2%1%-1%1%-1%-10%p%p0%0%4%13%2%5%005October94 GinnaStationiBechtelj',Rochester GasandElectricBKNCM4ARK RKSVLTSOBKVESSELNOZZLELOADSVesselNozzleReactorVessel%Difference (LoopAil3)~HotLeg~ColdLeg22%/83%8%/12%SteamGenentor~HotLeg~PumpSuction24%/84%15%/17%RCPump~PumpSuction~PumpDischarge (ColdLeg)13%/14%12%/30%Percentages allIndicateanINCREASEinCalculated LoadOverthatoftheCurrentAnalysis.

05October94 Rochester GasandElectricMODELENHANCEMENTS/DIFFERENCES Consistent MassModelingExplicitModelingofSupportsFrequency Cutoff@30HzN-411DampingSingleAnchorPoint3SingleSpectraCloselySpacedModesVia10%RuleExplicitACPAnalysisforHELB05October94 GinnaStationBechtetCDRochester GasandElectricZ14~4~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/ISOARochester GasandElectric5QIANSl~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+'tvttBechejtANORochester GasandElecvic~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'UYESEEaczv5INTERIORSTRUCTLHE EYUSHIELO6UILDINGWALLMODEL GinnaStationBechtegl/pion~Rochester GasandElectricCURRENTEXPECTATION Deadweight

-Increase(<5%)Thermal-SameSeismic-UnknownModelEnhancements DecreaseLoads-ColdLeg.IncreaseLoads-HotLegIncreased WeightOverallEffect-LoadsIncrease-MoreMarginforColdLeg'-LessMarginforHotLegLOCA-Inctiase(<15%)BlowdownInitialConditions WillUse15'FReducedTVGHELB-Decease05October94 4

'C0fGinnaStationIBechte/Rochester GasandF/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

~Rochester GasandElectricPROPOSEDINSTALLATION OVERVIEWDuring1995'perating Cycle~ReceiveRSGs~SiteImprovements/Buildings

~TowerCraneforDomeAccess~ErectConstruction Equipment onDome~Drill/Cut OuterLayer(~6"-8")~PositionLampsonTransilift

~Transport EcStandRSGsOutsideContainment ColdShutdown/Defueling SetupAuxiliary CraneInitiateConcrete/Rebar RemovalfromDomeRemoveInterferences fromInteriorofDomeRemoveInterferences fromAroundOSGsCutSecondary SidePiping(MS,FDWTR)SetupEquipment forRCSCuttingDECON/Encapsulate OS6ExteriorSetupBackupSpentFuelPoolCooling05October94 0

(>>pinnaSlaliontBechtelRochester GasandElectricPROPOSEDINSTALLATION OVERVIEW(Continued)

ReactorDe-Fueled (SGR"Window")I~Cut/Remove DomeLiner~CutRCSPiping0Remaining Secondary Lines(B/D,Level)~Lift/Remove OSGs&Lift/Install RSGs~Refit/Reweld LinerforDome~Establish Containment Integrity

~WeldSecondary Side&,RCSPiping~Establish RCS&Secondary SideIntegrity

~BeginReplacing Rebar~BeginPouringConcretetoCloseDomeOpeningsRefueling/Cold Shutdown(FuelinReactor)4CompleteRebar&,ConcreteWorkConcreteCureCompleteDomeInterference Replacement CompleteReplacement ofInterferences NearRSGsDisassemble/Remove Equipment fromContainment Structural Integrity TestRCSASMESectionXILeakTestStartup/At PowerRSGPerformance Tests/Monitoring RSGLevelControlTuningDisassembly ofDomeConstruction Equipment Dismantling ofSiteImprovements/Buildings 05October94 SITEPLANGINNANUCLEARPOWERSTATION 0GlnnaStationBechtelsimpsonCDRochester GasandElectricRCSPIPECUTI1NGCutMethod2Cut(1HotLeg;1ColdLeg)BracingDeadweight SupportsOnlyContingency isColdLegElbowReplacement WeldingAutomatic RemoteMachineNarrowGapWeldPrep5'evelWeldBothSidestoEaseFit-Up316SSTFillerNDK~InspectperASMESectionXI~Surface;Volumetric; LeakTest~ResearchandDevelopment In-Progress forISI05October94 AHOIGinnaStationBec~htelg

/IQmpun>CDCDRochester GasandElectncWELDPREPR(Typical)

B21/2maxM304M-1/2 BWIGinnaStation8echtejti0$0ARochester GasandElectncADJACENTWELDSSHOPWELDg-152)SAFEEND(FORGED316L/316LN)UTTERg-152)RS/GNOZZLE(SA-50SCL3)CLADDING(309L/300L)FKLDWELD(ER316)RCSELBOW(CAST316SST)

GinnaStationBechtelCDRochester GasandElectrfcMovementofLampsonCraneintoProtected AreaDuringPlantOperation

~NoSwingofBoomOverSafetyRelatedStructures Transportation ofNewSG'stoStand-UpFrameDuringOperation UpendingNewSG'sforPrepWorkandInsulation Installation

~Stand-upLocationOutsideDropZone05October94

MOVEMENTOFLAMPSONCRANEINTOPROTECTED AREADURINGOPERATION SLIDE1 GinnaStationBechtelLppeonRochester GasandElectricRemovalofOldSG'sColdShutdown, FuelRemovedfromContainment

~SingleLiftPoint~WithinLoadDropAnalysisParameters DefinedbyDomeOpenings~Engineered Foundation Precludes OnlyExperienced LTLFailure~NoMovementofLTL;SlightRotations DuringExtractions Downending toFixtureinYardEastofContainment

~SGMaintained ClosetoGround~SGDoesnotPassOverSiteStructures s~Transportation toOSGSFViaTransporter 05October94

'E.>>Vg>~~ht*\)4-"or,tglk'I$'4k tt1 LAMPSONTRANSI-LIFTSCRIVEEYE(BYOTHERS)\1IIII~IIIII~III1IIIIIIIIIIIIII~PIN(NK-014PI

)&KEEPERR90'INKPLATE(N-014LKI)

SEENOTE11OLOSTEANGENERATOR I~~~~~~~~VI(I/g)PLUGPIN(N-0)4PI)&KEEPERRPLUGII~II0I~IPARTIALELEVATION OFOLOSTEAMGENERATOR I/=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 GinnaStationBWIBechtglCDRochester GasandElectricRiggingNewS/6'sMovementofCranewithLoadonEngineered Foundations

~NoMovementofLTLOnceHoistinghasBegun(LiftPosition)

~SlightRotations DuringInsertion

~BoomandLoadProhibited FromPassingOverSFP05October94 STEAMGENERATOR RIGGiNGTOTHEOOZEIILSLIDE3

GinnaStationBechtellplllpOOh Rochester GasandElectricDomeConstruction Openings~"A"S/6Hexagon,"B"S/6HexagonwithSlot~ConformstoLoadDropAnalysisParameters

~S/6Precluded fromImpacting SFP

)

AEXTENTQFCHIPBACKOPENlNGOUTLlNES-(sg)iieil/iPARTIALPLANOFCONDOME GinnaStationBN~BechtelPOOhRochester'es andElectncConcreteRemovalProcess~360'upport Platform"CROWN"(Concrete RemovalOutsideWalkwayNetwork)~Excavation fromTopofOpenings~NoStrongbacks

~NoEnclosures OverOpenings~UtilizesAutomated Hydraulic JackHammers05October94

"CROWN'ONCRETE REMOVALOUTSIDEWALKWAYNETWORK,au.AROUNDEXTENTOFCHIPBACKOPENINGOUTLINESIIIIII)itCaJtVEO/IS0)l~~C~~0/PARTIALPLANOFCONTAIDOMESLIDE2 glAQQAVEP JACKHA~%5MACHINESTOBEMOUOfAImROWN-o"+~IREE'~INpo-e+0-EL'IiQoCC'~Qa,dS~Ir4Q(ISi.'41P4HTlW~II,TVP.CATCHCONTAlNMENT ALLAROUND~~I~P~~VEt.5RZIHGI-~H-.PBo'-8~~~~ASECTIONSECTIONAL VIEWOFCONTAINNIENT DOMESHOWNG'CROWN'LIDE 3

GlnnaStationBWIBecI1teIRochester GasandElectrfcConcreteTestBlockProgramCompleted in6/94~Automated Jackhammer Demonstration

~Determined BestExcavation Technique

~Determined Machining ImpactEnergyLevel~Determined MachineSensitivity andOperatorControl05October94

)

GinnaStationBechtelCDCDRochester GasandElectricTestBlockConclusions

~Machinewon'tDamageRebarorLiner~ConcreteBreaksCleanOffLiner~Excavation Quantities SupportOutageScheduling

~Additional Engineering OngoingtoSupportRemovalSequencing 05October94 GinnaStationBechtelCDCDRochester GasartdEfectricRepairofContainment Dome~ReuseExistingLinerPlateCadweldRebarSplicesorStick-Weld

~LeakChannelIntegrity LinerStiffeners maybeRequired~Monolithic Pour05October94 GinnaStationBechtetCDRochester GasandElectricStructural AnalysisContainment OpeningDesignbyBechtelLoadDropAnalysisDictatesHoleParameters DomewithOpeningStructurally AdequateCrownLoadingsInputtoAnalysis~RepairSequencing Ongoing~RGAEContainment ModelforOvercheck 05October94 CONTAMENf (gastoabe~opjuiq@)DONEOPENINGOp+S~/~S'~4~AWW.F:4'.~,lEg-~ISegrADETAILI/R~I'R~SUDE0.

~-glRochester GasandElectricCurrentConfiguration

~OneGenerator

-Mirror~OneGenerator

-Mirror/Asbestos

~SingleSumpDesignPrecedesRG1.82Horizontal GratingVerticalScreeninSumpReplacement Plans~BlanketorBlanket/Mirror

~SumpWillBeEvaluated UpgradeToImproveWillNotMeetRG1.82Possibility ofCreditting Platforms 05October94 qeGinnaStationBechtelBitt'IPoohCDRochester GasandElectricRPActivities AlreadyAddressed

~WorkingwithPlantRPStaffonIssuesCommontoPlant/Project OutageSuccessIncentive BasedContractor RPTechnician Specification/Contract MemberofLLRWTechnical Subcommittee Electronic Dosimetry Evaluation, Selection andFundingProjectRPInstrumentation Estimated NeedsPurchased MajorityfromNorthAnnaSGRPGroup~OldSteamGenerator DisposalOptionsOn-Site'nterim StorageisCurrentPlan05October94 I

BWIGlnnaStationBechtelRochester GasandElectricRPActivities AlreadyAddressed (Continued)

InquiredwithVendorsonAlternative MethodsforDisposition ofOSGsWillContinuetoInvestigate Alternatives

~Pipe-EndDecontamination MethodsWitnessed TwoDifferent Methods:CO,andSpongeBlast(Demonstrations)

Tentative ApprovalforSpongeBlastPlantoWitnessSpongeBlastApplication atV.C.SummerSGROutage~Man-RemIncentive forPrimeContractor 05October94 GlnnaStationBechtelIc)uRochester GasandElectrtcOngoingActivities

~,ProjectRPPlanBeingDraftedInterface Specification hasbeenCompleted andIncorporated Procedure ReviewsforIncorporation PlantCommitments TrackedforIncorporation V.C.SummerSGRPVisitKeyRPStaffWillWitnessImportant Evolutions AllowIncorporation ofLessonsLearnedonPipe-EndDecontamination

~PrimeContractor Submittal ReviewProcedure ReviewsFacilityDesigns05October94 k4 GinnaStationBWIBeeIRochester GasandElectricOngoingActivities (Continued)

SiteLayoutandPersonnel Flowpaths WorkPlansConcretePlansCraneandDomeDecontamination DomeLinerandConcreteActivation StudyAsbestosInsulation RemovalOpticalTemplating Interference Modifications 05October94 GinnaStationBechtelRochester GasandElectrfcComponent Preliminary SafetyEvaluation FinalReport/50.59SafetyEvaluation September 1994May1995Installation Activities SafetyEvaluation OfContainment OpeningsAugust1995SafetyEvaluation ofRiggingAndHandlingJuly1995SafetyEvaluation OfSteamGenerator PipingMay1995SafetyEvaluation OfSteamGenerator Insulation TestingandInspection PlanMay1995June199505October94 1I