ML17331B208
| ML17331B208 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 01/24/1994 |
| From: | FITZPATRICK E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AEP:NRC:1173B, GL-92-01, GL-92-1, TAC-M83453, TAC-M83454, NUDOCS 9402040202 | |
| Download: ML17331B208 (13) | |
Text
ACCELERATEDDIS,UTIONDEMONSTRATIONSYSTEMREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)DOCKET0500031505000316I
SUBJECT:
RespondstoRAIreWWCAP-13587,rev1,"ReactorVesselUpperShelfEnergyBoundingEvaluationForWPressurizedDWaterReactors,6GL-92-01,rev1,"ReactorVesselStructuralIntegrity."DISTRIBUTIONCODE:A028DCOPIESRECEIVED:LTRENCLSIZE:TITLE:GenericLetter92-01Responses(ReactorVesselStructuraIntegrity1/NOTES:ACCESSIONNBR:9402040202DOC.DATE:94/01/24NOTARIZED:NOFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,IndianaM50-316DonaldC.CookNuclearPowerPlant,Unit,2,IndianaMAUTH.NAMEAUTHORAFFILIATIONFITZPATRICK,E.IndianaMichiganPowerCo.(formerlyIndiana6MichiganEleRECIP.NAMERECIPIENTAFFILIATIONRDocumentControlBranch(DocumentControlDesk)RECIPIENTIDCODE/NAMEPD3-1PDCOPIESLTTRENCL11RECIPIENTIDCODE/NAMEHICKMAN,JCOPIESLTTRENCL22DDINTERNAL:NRR/DE/EMCBNRR/DRPE/PDI-1NUDOCS-ABSTRACTOGC/HDS2RES/DE/MEB22NRR/DORS/OGCB11NRR/DRPW11OC/LFJ3CB10REFILEOl1111111011EXTERNAL:NRCPDR11NSIC11RDNOTETOALL"RIDS"RECIPIENTS:ADDPLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATEYOURNAMEFROMDISTRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEED!TOTALNUMBEROFCOPIESREQUIRED:LTTR15ENCL134 iI,I IndianaMichiganPowerCompanyP.O.Box16631Coiumbus,OH43216AEP'NRC:1173BDonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74RESPONSETOREQUESTFORADDITIONALINFORMATIONFORGENERICLETTER92-01,REV.1(TACNOS.M83453ANDM83454)U.S.NuclearRegulatoryCommissionDocumentControlDeskWashington,D.C.20555Attn:T.E.MurleyJanuary24,1994
DearDr.Murley:
ThisletteranditsattachmentarebeingsubmittedinresponsetoaverbalrequestforadditionalinformationfromyourstaffregardingWestinghouseWCAP-13587,Revision1,"ReactorVesselUpperShelfEnergyBoundingEvaluationforWestinghousePressurizedWaterReactors,"andourresponsetoGenericLetter92-01,Revision1,"ReactorVesselStructuralIntegrity,"asapplicabletoDonaldC.CookNuclearPlant,Units1and2.TheattachmenttothisletterprovidestheadditionalinformationontheuppershelfenergyfortheuppershellcourseplatesfortheUnit2reactorvessel.ThisinformationwassenttoyourstaffonDecember21,1993,onadraftbasis.Thisletterfinalizesandprovidesadditionalclarificationsonthematter.Sincerely,E.E.FitzarickVicePresidentcadAttachment9402040202940124PDR'ADOCK05000315P'PDR Dr.T.E.Murley-2-AEP:NRC'1173BCC:A.A.Blind-BridgmanG.CharnoffJ.B.Martin-RegionIIINFEMSectionChiefNRCResidentInspector-BridgmanJ.R.Padgett Dr.T.E.Murley-3-AEP:NRC'1173Bbc:S.J.BrewerD.H.Malin/J.B.Kingseed/T.R.Satyan-SharmaM.L.Horvath-Bridgman-w/oattachmentJ.D.BenesJ.B.Shinnock-w/oattachmentW.G.Smith,Jr.J.B.Hickman,NRC-Washington,D.C.AEP:NRC:1173BDC-N-6015.1-w/oattachment ATTACHMENTTOAEP:NRC;1173BAMERICANELECTRICPOWERSERVICECORPORATIONDONALDC.COOKNUCLEARPLANTUNIT2UPPERSHELFCHARPYVALUES AttachmenttoAEP:NR73BPagelAmericanElectricPowerServiceCorporationDonaldC.CookNuclearPlantUnit2UpperShelfCharpyValuesPerthedefinitionfor"beltlineregionofthereactorvessel",givenin10CFR50AppendixG,"FractureToughnessRequirements",sevenplatesfromtheDonaldC.CookNuclearPlantUnit2reactorpressurevesselareconsideredtobeinthebeltlineregion.ThelocationinthereactorpressurevesselandtheidentificationastoheatnumberaregiveninTable1.Aspartofthereactorpressurevesselmaterialacceptancecriteria,themanufacturerofthevessel,ChicagoBridge8Iron(CBI)CompanycontractedLukensSteelCompanytoperformcharpyimpacttestingonmaterialfromthesevenplates.TheWestinghouseElectricCorporationVesselEquipmentSpecification(E-Spec)requiredthatavalueof30ft-Ibsbeobtainedat10'F.TheDonaldC.CookNuclearPlantUnit2reactorpressurevesselwasfabricatedpriortotheASMESectionIIICodeand10CFRPart50AppendixGrequirementthatthecharpyV-notchimpactspecimensbeorientedinthetransverseor"weak"directiontomeettheRT>>,oruppershelfrequirements.WhenLukensSteelCompanyperformedthetestingontheDonaldC.CookNuclearPlantUnit2reactorpressurevesselmaterialsthespecimenswereorientedinthelongitudinalor"strong"direction.Further,LukensSteelCompanyprovidedpartial(i.e.notto100%shear)Charpycurvesforspecimensinthelongitudinaldirection.Aspartofthereactorpressurevesselmaterialsradiationsurveillanceprogram,WestinghouseperformedcharpyV-notchimpacttestinginthetransversedirectiononthetwointermediateandtwolowershellplates.Testingofthefourplatesshowedthattheymeet10CFRPart50AppendixGrequirementsofhavingaminimumof75ft-Ibsatthestartofplantlife.Theremainingthreeplatesfromtheuppershellcourselocationwerenottestedaspartofthesurveillanceprogrambecausetheywerenotevaluatedtobelimiting.Theuppershellplateshavesimilarchemistryastheintermediateandlowershellplates,howevertheyarelocatednineteen(19)inchesabovetheactivecoreandwillexperienceasignificantlylowerfluencethantheintermediateandlowershellplatesasshowninTable2.TheoriginalLukensSteelCompanymaterialtestingofthethreeuppershellcourseplates,heatnumbersC5518-1,C5518-2andC5521-1exhibitedamaximumof84ft-Ibsat70%shear,75ft-Ibsat50%shear;and63ft-Ibsat40%shear,respectively.LukensSteelCompanyobtainedtheaboveresultsfromspecimensorientedinthelongitudinaldirection.Thatis,thelongaxisofthecharpyV-notchimpactspecimenwasparalleltothemajorworkingdirectionoftheplates.U.S.NuclearRegulatoryCommission,StandardReviewPlan,NUREG-0800,Revision1datedJuly1981statesthatiftestswereonlymadeonlongitudinalspecimens,thevaluesshouldbereducedto65%ofthelongitudinalvaluestoestimatethetransverseproperties.The65%criteriawasdevelopedfromdataobtainedbythePressureVesselResearchCommittee(PVRC)andtheMetalsPropertiesCouncil(MPC)inthemidtolatenineteensixtiesandearlynineteenseventies.BasedonthepartiallongitudinalCharpycurvesprovidedbytheLukensSteelCompanyandthe65%multiplicationfactorinNUREG-0800,Revision1,thecalculatedtransverseCharpyV-notchenergies(ft-Ibs)forplatesC5518-1,C5518-2,andC5521-2wouldbe54(0.65x84),48(0.65x75),and41(0.65x63),respectively.Table2presentstheweightpercentcopper,theend-of-life(EOL,32EFPY)fluenceatthe1/4-thicknessandtheresultingpercentagedecreaseinuppershelfenergyperRegulatoryGuide1.99,Revision2.Inordertomeetthe10CFRPart50AppendixGrequirementthatthereactorvesselexhibitaminimumof50ft-Ibsinthetransversedirectionduringtheplant'soperatinglife,platesC5518-1,C5518-2andC5521-1wouldhavetohaveaminimuminitial P.
AttachmenttoAEP:NR13BPage2uppershelfimpactenergyof56ft-lbs,56ft-Ibsand57ft-lbs,respectively.PlatesC5518-1andC5518-2arefromthesameheatofsteel.Thedesignationof1and2refertotheplatenumberastheywerecutoffduringthehotrolling.FromthepartialenergyversustemperaturecurvegiveninFigures1and2forC5518-1andC5518-2onewouldexpecttheuppershelfenergywouldplateauabovethatshownontheabbreviatedcurvesuchthattheinitialtransverseenergy(0.65xlongitudinal)wouldbeabove56ft-lbs,ensuringthatthe50ft-IbEOLenergyrequirementisexceeded.ThepartialCharpyimpactenergyversustemperaturecurveforplateC5521-1isshowninFigure3.Similarly,onewouldexpecttheuppershelfenergyofplateC5521-1toplateauabovethatshowninFigure3.ThiscanbeconfirmedfromthetransverseCharpyimpactdataforintermediateshellplateC5521-2,Figure4.PlateC5521-2charpyV-notchimpactenergyversustemperaturecurveforspecimensorientedinthetransversedirection(axisofthespecimenperpendiculartothemajorworkingdirection)isshowninFigure4andshowsanuppershelfenergyof86ft-lbs.BasedontheprojectedEOLfluence,coppercontent(seeTable2),RegulatoryGuide1.99,Revision2methodologyresultsinapredicteddecreaseof11.5/0inuppershelfenergyatEOLforuppershellcourseplateC5521-1resultinginaEOLuppershelfenergyof76ft-Ibs(0.885x86ft-Ibs).Therefore,itcanbeconcludedthatthethreeuppershellplates,C5518-1,C5518-2,andC5521-1willexceedtheminimumrequiredCharpyimpactenergyof50ft-Ibsinthetransversedirectionduringtheplant'soperatinglife.TABLE1DONALDC.COOKNUCLEARPLANTUNIT2BELTLINEREGIONPLATESLocationIdentificationUpperShellCourseUpperShellCourseUpperShellCourseIntermediateShellCourseIntermediateShellCourseLowerShellCourseLowerShellCourseC5518-1C5518-2C5521-1C5521-2C5556-2C5540-2C5592-1 AttachmenttoAEP:NR73BTABLE2END-OF-LIFEUPPERSHELFENERGYMaterialDescriptionC5518-1C5518-2C5521-1C5521-2C5556-2C5540-2C5592-1Copper(wt.%)0.120.120.140.140.150.110.'I4EOL1/4-tFluence(n/cm')4.85E+174.85E+174.85E+171.03E+191.03E+191.03E+191.03E+19R.G.1.99,Rev.2(%Decrease)10.510.511.523.024.020.023.0MinimumInitialUSE(Ft-Ibs)56565762626062
AttachmenttoAEP:NR73BPage4FIGURE1iAMP:UpperShellPlate,C5518-1(Longitudinal)70302010-20'ri20406080100120140160Temperature(degreesF)FIGURE2AMP:UpperShellPlate,C5518-2(Longitudinal)7010-40-20020406080100120140160Temperature(degreesF)
AttachmenttoAEP:NR73BFIGURE3AMP:UpperShellPlate,C5521-1(Longitudinal)8070403010-60-202060-400Temperature(degreesFj80120FIGURE4AMP:IntermediateShell,C5521-2(Transverse)1108070I60p5040201050100Temperature(degreesF)150200250