ML17261B033

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Forwards Info Re Reactor Vessel Issues,Per 900305 Telcon Concerning Change of License Expiration Date
ML17261B033
Person / Time
Site: Ginna Constellation icon.png
Issue date: 03/28/1990
From: MECREDY R C
ROCHESTER GAS & ELECTRIC CORP.
To: JOHNSON A R
Office of Nuclear Reactor Regulation
References
NUDOCS 9004130175
Download: ML17261B033 (17)


Text

ACCELERATED DISTRIBUTION DEMONSTIRATION SYSTEM~-REGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9004130175 DOC.DATE:

90/03/28NOTARIZED:

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

Rochester Gas&ElectricCorp.RECIP.NAME RECIPIENT AFFILIATION ProjectDirectorate I-3DOCKET405000244'R

SUBJECT:

Forwardsinforereactorvesselissues,per 900305telconconcerning changeoflicenseexpiration date.DISTRIBUTION CODE:AOOIDCOPIESRECEIVED:LTR (ENCL2SIZE:TITLE:ORSubmittal:

General.Distribution NOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72).

S05000244, RECIPIENT IDCODE/NAME PD1-3LAJOHNSON,A COPIESLTTRENCL1155RECIPIENT

,,COPIESIDCODE/NAME LTTRENCLPD1-3PD11"AINTERNAL:

NRR/DET/ECMB 9HNRR/DST8E2NRR/DST/SICB 7ENUDOCS-ABSTRACT OGC/HDS2RES/DSIR/EIB EXTERNAL:

LPDRNSIC1111111110111111NRR/DOEA/OTS B11NRR/DST/SELB 8DNRR/DST/SRXB 8EE01NRCPDR1'1111101111t~We'~(syopy>o7RNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASIZlCONTACTTHE.DOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISISFORDOCUMENTS YOUDON'TNEEDl/TOTALNUMBEROFCOPIESREQUIRED:

LTTR21ENCL19AD-D I>>I~..jt4f")'EyAtlat'if',vs\II,I,f~jv/,~gwI~~'

,tI8fXIIIIIIIl~~Oology~'IIII-III IIIIIIIII ROCHESTER GASANDELECTRICCORPORATION o89EASTAVENUE,ROCHESTER, NK146490001March28,1990TCLEPHONK ARKAcoDK7ld546.2700IJ.S.NuclearRegulatory Commission DocumentControlDeskAttn:AllenR.JohnsonProjectDirectorate I-3Washington, D.C.20555

Subject:

ChangeofLicenseExpiration DateAdditional Information R.E.GinnaNuclearPowerPlantDocketNo.50-244

Reference:

(1)LetterfromBruceSnow(RG&E)toCarlStahle(NRC),datedJanuary19,1988ofsamesubject(2)LetterfromRobertSmith(RG&E)toAllenJohnson(NRC),datedOctober5.,1989ofsamesubject(3)Telephone Conference ofMarch5,1990concerning issuesrelatedtochangeinlicenseexpiration

DearMr.Johnson:

OnMarch5,1990,atelephone conference (Reference 3)washeldwithAllenJohnson(NRC),-JohnTsao(NRC),PeterNagata(EG&G),JohnSmith(RG&E),GeorgeWrobel(RG&E),MikeSaporito(RG&E),WilliamGalloway(RG&E),RobertEliasz(RG&E)andJohnJorgensen (RG&E).Duringthecourseoftheconversation, theNRCandyourcontractor askedanumberofquestions whichcentered.

around.reactorvesselissues.Theattacheddataisbeingsuppliedtoyouanddirectly.

toyourEG&Gcontractor (peryourinstructions) inanattempttoaddressyourconcerns.

Verytrulyyours,RobertC.MeredyDivisionManagerNuclearProduction JRJN096Attachments 90041301'g~~

900328PDRADOCK05000244PPDC~go/yqoe<<<4'~

xc:Mr.AllenR.Johnson(MailStop14D1)ProjectDirectorate I-3Washington, D.C.20555U.S.NuclearRegulatory Commission RegionI475Allendale RoadKingofPrussia,PA19406PeterNagata(MailStop2218)EG&GIdahoP.O.Box1625IdahoFalls,ID83415GinnaSeniorResidentInspector LICENSEAMENDMENT

-CHANGEOFEXPIRATION DATEestionsfromMarch51990NRC/RGGETelecon1.QuestionRG&E'sOctober5,1989submittal hasonlyonesentenceinAttachment Bregarding theissueofReactorVessel.Surveillance.

Inparticular, theNRCisinterested inhowtherequirements of10CFR50,AppendixHarebeingaddressed.

~ResenseThepurposeofRGGE's-MaterialSurveillance Programistomonitorchangesinthefracturetoughness properties of*ferriticmaterials inthereactorvesselbeltlineregionresulting fromexposureofthesematerials toneutronirradiation andthethermalenvironment.

Theinformation fromtheMaterialSurveillance Programisusedasinputtothe10CFR50,AppendixGFractureToughness Requirements.

Asstated.inSection5.3.3.2oftheGinnaUFSARandWCAP-7254, theMaterialSurveillance Programisdesignedtomeettherequirements ofAppendixHandASTME-185-73.

Itconsistsofsixsurveillance capsulespositioned inthereactorvesselbetweenthethermalshieldandthevesselwall.Theverticalcenterofeachcapsuleisoppositetheverticalcenterofthecore.Eachcapsulecontainstensile,CharpyV-notchandwedgeopeningloadingspecimens fromtheforgings(heats125P666and125S255),

andweldmetalandCharpyV-notchspecimens fromtheheataffectedzonematerial.

Thesurveillance capsulescontaindosimeter wiresofcopper,nickelandaluminum-cobalt.

Theyalsocontaincadmium-shielded dosimeters ofNeptunium-237 andUranium-238.

Thedosimeters permitevaluation oftheneutronfluxseenbythevariousspecimens.

Thesurveillance capsulescanberemovedwhenthevesselheadisremoved.Thecapsulescanbereplacedwhenthevesselinternals areremoved.Surveillance capsulesareperiodically removedand.testedinaccordance withTechnical Specifications andtestresultsaredocumented.

Testresults-areanalyzed, theshiftintransition temperature iscomparedtothepredicted shiftandpressure-temperature limitcurvesarerevisedaccordingly.

Capsuleswithdrawn afterJuly26,1983willbetestedandresultsreportedinaccordance withthe1982revisionofASTME-185asrequiredbyAppendixHrequirements.

TheGinnacapewithdrawal scheduleis8Faccordance withE-185andTechnical Specification Section4.3.1.1andisasfollows:~CasuleVRTpSNTimeRemovedforTestinRemoved.in1971Removedin1974Removedin198017EFPYatnearestrefueling StandbyStandbyTheabovecapsulewithdrawal schedulemaychangebasedontheIntegrated ReactorVesselSurveillance ProgramofBabcockandWilcoxinwhichRG&Eparticipates.

Ifsuchachangeisrequested, itwillbecoveredbyaseparatesubmittal.

Theresultsofreactorvesselmaterialsurveillance capsulesV,RandThavebeensubmitted.

totheNRCinaccordance withASTME-185requirements.

Thereportnumbersforthesecapsulesarelistedbelow:~CasuleReortNo.VRTFP-RA-1WCAP8421WCAP100862.QuestionTheNRCwishestohaveacommitment thattheCharpyuppershelfenergyoftheGinnavesselisabove50ft-lb.asrequiredby10CFR50,AppendixG.R~esnseThebeltlineweldisthelimitingmaterialintheGinnareactorvessel.ThreecapsuleshavebeenremovedandtestedandtheCharpyuppershelfenergyresultsfortheweldmaterialissummarized asfollows:CapsuleV:Uppershelfenergydecreased from74.0ft-lbs.to50.8ft-lbs.atafluenceof4.9x10"'eutrons/cm (E>1Mev).CapsuleR:Uppershelfenergydecreased from80.0ft-lbs.to50.0ft-lbs..atafluenceof7.6x10'"neutrons/cm (E>1Mev).CapsuleT:Uppershelfenergydecreased from80.0ft-lbs.to55.0ft-lbs.atafluenceof1.75x10'eutrons/cm (E>1Mev).Inaddition, reconstituted Charpytestswereperformed onweldmetalfromCapsuleT.Theuppershelfenergydecreased from80.0ft-lbs.to55.0ft-lbs.atafluenceof1.75x10"neutrons/cm (E>1Mev).

Based.ontherveillance capsuleresulttodate,itcanbeconcluded thatthereactorbeltlineregionmaterialisnotassensitive toradiation aspredicted andasaturation ofradiation damagemaybeoccurring.

Inadditiontotheabove,a100%examination ofthereactorvesselbeltlineweldwasperformed duringthe1989refueling outagewithnorecordable indications found.(SeeletterofMay4,1989fromR.E.Smith(RG&E)toNRCconcerning ReactorVesselExamination of1989.)RG&EhasjoinedtheBabcockandWilcoxOwnersGroup(BWOG)whichwasformedtoaddresstheuppershelftoughness issueforallB&Wfabricated.

reactorvesselswithLinde80welds.Theprincipal objective ofthisgroupistoassurethecontinued.

licensability ofallelevenparticipants and.theirseventeen reactorvessels.ThegroupwillprovidethedatarequiredofAppendixG,10CFR50toaccomplish thisobjective.

IntheeventthattheCharpyuppershelfenergyfallsbelow50ft-lbs.inthefuture,ananalysiswouldbeperformed thatwouldconservatively demonstrate, makingappropriate allowances foralluncertainties, theexistence of,equivalent marginsofsafetyforcontinued operation.

Finally,ifthereisnoindication thatanequivalent safetymarginexists,thenthereactorvesselmayhavetobethermally annealedtorecoverthefracturetoughness ofthematerial.

Westinghouse andEPRIhavebeenworkingonaprogramtodemonstrate thefeasibility ofthistypeofprocedure asdocumented inEPRIReportNo.NP-6113-M, ThermalAnnealing ofanEmbrittled ReactorVessel.3.QuestionTheNRCisinterested inRG&E's.responsetoGenericLetter88-11,"NRCPositiononRadiation Embrittlement ofReactorVesselMaterials andit'sImpactonPlantOperations".

R~esnseOurresponsewasprovidedbyletterdatedJanuary23,1989.Inaccordance withourcommitments inthatresponse, RG&Eexpectsnewheatupandcooldowncurvestobeimplemented byMay1991.4.QuestionThereisadiscrepancy inWCAP-8421 concerning datafortheCharpyuppershelfenergyofforging125666VA1 whichisthelowershellforging.Table5-6onPage5-13listsanuppershelfenergyofapproximately 183ft-lbs.whileTableA-1on-PageA-4listsanuppershelfenergyofapproximately 164ft-lbs.Whichiscorrect?

R~esonseTheaveragevalueofapproximately 183ft-lbs.forforging125P666isderivedfromFigure5-1onPage5-8oftheCapsuleReport.,Unirradiated valuesof202ft-lbs.,186ft-lbs.,and162ft-lbs.areaveragedtogive183ft-lbs.Theaveragevalueofapproximately 183ft-lbs.forforging125P666iscorrectandisconsistent withvaluesreportedinCapsulesVandT,aswellasCapsuleR.TableA-1onPageA-4ofCapsuleRwasapparently copiedfromthereportofCapsuleVwhichhasthesameincorrect valueofapproximately 164onPage45.5.questionPage4-1ofCapsuleRReportappearstohavethelowerand.intermediate forgingnumbersreversed.

~ResonseThesentencefromPage4-1readsinpart...intermediate andlowershellforgings(heats125P666and125S255)....

Thissentenceisconfusing anddoeshavethenumbersinthewrongorder.Thisshouldread...intermediate forging(125S255) andlowerforging(125P666VA1)....

Thecorrectforgingnumbersareshown.onGinnaUFSARFigure5.3-2,whichisattached.

6.questionNRCrequested acopyofWestinghouse LetterNSIDWOG-37,datedNovember16,1982toR.Mecredyregarding GinnaReactorVesselMaterial.

~ResonseLetterattached.

7.~estionWhatmaterialislimiting?

R~esnseAsstatedinSection5.3.1.2oftheGinnaUFSAR,thebeltlineweld,SA-847,islimiting.

ThelocationofthisweldisshownontheattachedFigure5.3-2oftheGinnaUFSAR.8.QuestionForging.125S255hasshowednoshiftinRTforCapsuleR.R~esnseTherewasa0FshiftinRTforCapsuleR,thiswasalsotrueforCapsuleVandCapsuleT.RG&Ecanonlyspeculate'as tothereasonfortheO'Fshift,however,itappearsthatforsomereasonthismaterialisinsensitive toradiation.

Westinghouse ElectricCorporation WaterReactorDivisions NuclearServiceOivisionBox2728Pittsburgh Pennsylvania 15230November16,1982NSID/WOG-37 Dr.RobertMecredyRochester Gas8Electric89EastAvenueRochester, NewYork14649

DearDr.Mecredy:

CRobertE.GinnaReactorVesselMaterialAttachedisacompletespecification ofthebasematerialandweldmaterialfortheRobertE.Ginnareactorpressurevessel.Thesourceofthisdataistheoriginalmaterialcertification suppliedbyBabcockandWilcoxwiththevessel.ThisisthedataformingthebasisfortheWestinghouse RTNDTcalculations.

Verytrulyyours,/elrAttachment R.A.Muench,ManagerWestinghouse OwnersGroupcc:G.W.Dillon ROBERTE.GINNAUNITNO.1REACTORYESSELMATERIAL'SURVEILLANCE PROGRAM1.)Theestimated maximumfluence(E>1Mev)attheinnersurfaceofthereactorvesselwallasofMarch31,1977is5.26x10n/cm./2.)Theeffective fullpoweryears-(EFPY) ofoperation accumulated asofMarch31,1977is4.55EFPY.3.)Fabrication ofthereactorv'ess'elwasperformed byBabcock&'LlilcoxCo.4.)a.)SketchofthereactorvesselshowingbasematerialandweldsinthebeltlineregionisshowninFigurel.b.)Information oneachoftheweldsinthebeltlineregionisshowninTables1through4.c.)Information oneachoftheshellforgingsinthebeltlineregionisshowninTables4through7.5.)Information relativetoweldandforgingmaterialincludedinthematerialsurveillance programisshowninTables1through3and5through7.

FIGURE1IDENl'IFICA

~ANDIOCATIONOFDELTLINEREGMATERIALROBERTE.GINNAUNITNO.1REACIORVESSELFORGING123PIIGVAI SA-1101UJI-C5UJCLUJI-FORGING125S255VA1 CORESA-847(LIMITING WELD)FORGING125P666VA1 ROCHESTER GASANDELECTRICCORPORATION R.E.GINNANUCLEARPOWERPLANTUPOATEDFINALSAFETYANALYSISREPORTFigure5.3-2Identification andLocationofBeltlineRegionMaterial I

TABLE1IDENTIFICATION OfREACTORVESSELBELTLINEREGIONWELDMATERIALeWeldLocationNozzleShell-toInter.ShellInter.ShelltoLowerShellSurveillance WeldSubmerged ArcSA-847I.Hn-Mo-Ni61782Submerged ArcSA-1036Hn-Ho-Ni61782Linde8083501100-1125'F-48 Hrs.-FCLinde8084361100'F-ll-l/4 Hrs.-fWeldWireFluxWeldWeldProcessControlHo.~TeHeatHo.~TeLotHo.PostWeldHeat'Treatment Submerged Arc:SA-'101Hn-Ho-Ni71249.Linde8084451100-1125'F-48 Hrs.-FCTABLE2WELDMATERIALCHEMICALCOMPOSITION WeldWireControlNo.~TeHeatHo.SA-1101Mn-Ho-Ni71249SA-847Hn-Ho-Ni61782Surveillance WeldFlux~Te:LotNo.Linde80"8445Linde808350C~.070.082.075PS.021'014.012i.012.012.016lle1htPercentHnSiHoNiCrCu1.28.52',36.57.17.211.34.45.39.39.06.201.31.59.36.56.59.23 ITABLE3MECHANICAL PROPERTIES OFN/LOMATERIALWeldWeldWireControlNo.~TeHeatNo.SA-1484Mn-Mo-Hi71249SA-1101Hn-Mo-Ni61782Surveillance MeldFluxTHDT~Te~'LotNo.'FLinde8084450*Linde8083500*P~~0*Energyat10'Fft-Ib45,45,4658i60,3654,66.5,71**RTNPTOF0*0*ShelfEnergyYSft-Ibksi68.6367.000*79.073.52UTSksi84.26Elong.x28.581.8829.587.35'2.8RA62.0*Estimated basedonNRCStandardReviewPlanSection5.3.2andMTEB5-2**Energyat60'F.ITABLE4MAXIMUM'END OFLIFEFLUENCEATVESSELWALL'LOCATIONS NozzleShelltoInter.ShellWeldInter.ShelltoLowShellWeldNozzleShellForging123P118VAl InterShellForging125S255VAl LowerShellForging125P666VAl Fluencen/cm~2.0x103.7x10~2.0x10183.7x103.7x,10 TABLE5.IDENTIFICATION OFREACTORVESSELBELTLINEFORGINGMATERIAL~ComonentNozzleShellInter.ShellLowerShellSurveillance ForgingsForgingMaterialNo.HeatNo.,~Sec.123P118YAl 123P118A336125S255VAl 125S255A508CL2125P666VA1 125P666A508CL2125S255VA1

'25S255A508CL2125P666VA1 125P666A508CL2~Su1(er.Bethlehem SteelBethlehem SteelBethlehem SteelBethlehem SteelBethlehem SteelAustenitize 1550'F-ll Hrs-NQ1550'F-15-1/2 Hrs-llQ1550'F-9Hrs-MQ1550'F-15-1/2 Hrs-llQ1550'F-9Hrs-.ACHeatTreatment

~Temer1220'F-22 Hrs-AC1210'F-18 Hrs-AC1220'F-12 Hrs-AC1210'F-18 Hrs-AC1220'F-12 Hrs-ACStressRelief1125'F-30 Hrs-FC1125'F-30 Hrs-FC1125'F-30 Hrs-FC1100'F-ll-l/4 HrC1100'F-11 Hrs-FCTABLE6BELTLINEFORGINGMATERIALCHEMICALCOMPOSITION ForinNo.123P118YA1 125S255VA1 125P666VAl C.19.18.19P.010.010.012~S.009..007.bllt1n.65.66.67'HeihtPercentSi:.2323,.20(IMo.60.58.57Ni.69.69.69Cr.42.33.37-Cu.07.05V.02.02 IITABLE7MECHANICAL PROPERTIES OFBFLTLINEFORGINGS>'..1.lf11i,~'orinNo.123P118YA1 125S255YA1 125P666VA1 NDToF402040RTNPT"oF4p*UpperShelfEn'ergyft-'1b117*20*106*40*114*f'i)YSksi66.8767.2563.50UTSI88.0088.2585,00Elong.x25.5026.2526.25RA73.5070.1071.05125S255VA1 125P666VA1 204p20*.'40k91*120*78.2262.7297.1983.6523.3026.3566.85Surveillance 7p75TestResults*Estimated BasedonHRCStandardReviewPlanSection5.3.2andNTEB5.2