ML17332A608

Requests Approval to Use ASME Code Case N-498-1, Alternate Rules for 10-Yr Sys Hydrostatic Testing for Class 1,2 & 3 Sys.

ML17332A608
Person / Time
Site:	Cook
Issue date:	02/27/1995
From:	FITZPATRICK E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:0969AE, AEP:NRC:969AE, NUDOCS 9503080325
Download: ML17332A608 (9)

Text

PRIORITY1(ACCELERATED RIDSPROCESSING REGULATORY INFORMATION DISTRIBUTION SYSTEM(RXDS)DOCKET0500031505000316PACCESSXON NBR:9503080325 DOC.DATE:

95/02/27NOTARIZED:

NOFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,IndianaM50-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaMAUTH.NAMEAUTHORAFFILIATION FITZPATRICK,E.

IndianaMichiganPowerCo.(formerly Xndiana&MichiganEleRECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk)

SUBJECT:

RequestsapprovaltouseASMECodeCaseN-498-1,"Alternate Rulesfor10-YrSysHydrostatic TestingforClass1,2&3SysIIDISTRXBUTXON CODEA047DCOPXESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:

Inservice/Testing/Relief fromASMCode-GL-89-04NOTES:CRECIPIENT IDCODE/NAME PD3-1LAHICKMAN,J INTERNAL:

AEOD/SPD/RAB NRR/DE/EMCB NUDOCS-ABSTRACT RES/DSIR/EIB EXTERNAL:

LXTCOBROWN,BNOACCOPIESLTTRENCL1111111111111111RECIPIENT IDCODE/NAME PD3-1PDE-CENTER=

NRR/DE/EMEB OGC/HDS2LITCORANSOMEiCNRCPDRCOPIESLTTRENCL111111101111D0CuNNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEiVASTE!CONTACTTHE DOCUMENTCONTROLDESK,ROOMPI-37(EXT.504-2083)TOELIXIINATEYOURNAMEFROifDISTRIBUTION LISTSFORDOCUMENTS YOUDON"I'L'ED!TOTALNUMBEROFCOPXESREQUIRED:

LTTR14ENCL13 indianaMichiganPowerCompanyP.O.Box16633Columbus, OH43216FIFebruary27,1995AEP:NRC'0969AE DocketNos.:50-31550-316U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskWashington, D.C.20555Gentlemen:

DonaldC.CookNuclearPlantUnits1and2RequestforUseofCodeCaseN-498-1

Reference:

Letter,T.R.Quay(NRC)toN.S.Cams(WolfCreek),"RequestforApprovalofCodeCaseN-498-1asanAlternative totheRequiredHydrostatic PressureTest,WolfCreekNuclearOperating Corporation, WolfCreekGenerating Station(TACNO.M90051),"

datedFebruary3,1995Pursuanttotherequirements of10CFR50.55a(a)(3)(i),

werequestapprovaltouseASMESectionXICodeCaseN-498-1,"Alternative Rulesfor10-YearSystemHydrostatic TestingforClass1,2,and3Systems"forbothUnit1andUnit2.Therationale ofandjustification forthisrequestareidentical tothosecontained inasimilarrequestapprovedfortheWolfCreekNuclearPlant(seereference).

Thisisacostbeneficial licensing actionwhichisestimated torepresent apotential costsavingsof$1millionperoutage,asdetailedinattachment l.CodeCaseN-498-1providesforanalternative tohydrostatic testingwhichwillretainanacceptable levelofqualityandsafetyforClass1,2,and3systems.Specifically, itallowstheuseofasystemleakagetestinlieuofahydrostatic test.ThiscodecasewasapprovedbytheASMEBoilerandPressureVesselCodeCommittee onMay11,1994,butisnotincludedinthemostrecentlistingofNRCapprovedcodecasesinRevision11ofRegulatory Guide1.147,"Inservice Inspection CodeCaseAcceptability--ASME SectionXIDivisionl."9503080325'50227 PDRADOCK05000315PPDR U.S.NuclearRegulatory Commission Page2AEP:NRC'0969AE Thesystemhydrostatic testisnotatestofthestructural integrity ofthesystem.Rather,itisanenhancedleakagedetection test.LeakagefromClass3systemsisnormallytheresultoferosion/corrosion orjointseal/sealant agedeterioration andisreadilyapparenttoinspectors duringasystempressuretest.Industryexperience indicates that,inmostcases,leaksarefoundwhenthesystemisatnormaloperating pressure.

Thus,weconsiderthatthealternate requirements proposedinCodeCaseN-498-1constitute areasonable, safealternative totheexistinghydrostatic testingrequirements.

Acopyoftheapprovedcodecaseisattachment 2.Thesecondten-yearISIintervalforbothunitswillendonJuly1,1996,andUnit1systemsarecurrently scheduled forhydrostatic testingofClass3systemsduringtheupcomingrefueling outagewhichbeginsinSeptember 1995.Theuseofthiscodecaseisestimated toreducetheoutagecriticalpathtimeby72hoursbyeliminating hydrostatic testsfortheessential servicewatersystem,thesteamgenerators, andthedieselgenerators (starting airandcoolingjacketwater).Thus,werequestthatapprovalofthisrequestbegrantedpriortoJuly1,1995,inordertoapplythecodecaseprovisions duringplanningfortheupcomingUnit1outage.Sincerely, E,E.Fitzpatrick VicePresident ehAttachments CC:A.A.BlindG.CharnoffJ.B.MartinNFEMSectionChiefNRCResidentInspector

-BridgmanJ.R.Padgett ATTACHMENT 1TOAEP:NRC:0969AE COSTBENEFICIAL LICENSING ACTIONUSEOFCODECASEN-498-1 ATTACHMENT 1TOAEP:NRC:0969AE Page1RelatoReuirementUnit1andUnit2Technical Specification

4.0. 5requiresthatinservice

inspection ofASMECodeClass1,2,and3components beconducted inaccordance withSectionXIoftheASMECode.Thecoderequireshydrostatic testingofClass1,2,and3components.

However,CodeCaseN-498,whichhasbeenincorporated intoRegulatory Guide1.147,allowstheuseofasystempressuretestinlieuofahydrostatic testforClass1andClass2components.

CodeCaseN-498-1,whichhasnotyetbeenincorporated intoRegulatory Guide1.147,allowstheuseofasystempressuretestinlieuofahydrostatic testforClass3components.

Thus,periodichydrostatic testsofClass3components arerequired, unlessNRCapprovalisobtainedtoadoptandapplycodecaseN-498-1conclusions'ffect ofReuirementTheeffectoftherequirement istorequiretestingoftheapplicable systemtopressures exceeding theirdesignvaluesinordertodetectleaks.ationaeoReulatorChaneCodeCaseN-498wasendorsedforusebytheNRCandhasbeenincorporated intoRegulatory Guide1.147.CodeCaseN-498-1extendsthescopetoASMEClass3components.

Thecodecommittee concluded thatnoadditional benefitwouldbegainedbyconducting theexistingClass3systemhydrostatic testsversusperforming leaktestsatnominaloperating pressure.

roximateCostofReuirementThepresenttestingrequirement requiresthefollowing hydrostatic tests.Timescitedare"timeatpressure" anddonotincludesystempreparation orrestoration times.2.Essential servicewaterTwotests;tenhourspertestSteamgenerators Fourtests;tenhourspertest ATTACHMENT 1TOAEP:NRC:0969AE Page23.Dieselgenerators (starting airandcoolingwaterjackets)Twelvetests;twohourspertest(sometestscanbeconducted inparallel)

Theeffortisestimated torepresent 72hoursofoutagecriticaltime,whichequatestoapproximately

$1millionavoidable costperoutage.

ATTACHMENT 2TOAEP:NRC:0969AE CODECASEN-498-1 CASESOFAShfEBOILERANDPRESSUREVESSELCODEApprovalDate:May11,1994SeeNumerical Indexforexpiration andanyreaffirmation dates.CASEN-498-'1CaseN-498-1Alternative RulesforIOrYearSystemHydrostatic TestingforClassI,2,and3SystemsSectionXI,DivisionIInquirylWhatalternative rulesmaybeusedinlieuofthoserequiredbySectionXI,Division1,TableIWB-2500-1, CategoryB-P,TableIWC-2500-1, Cat-egoryC-H,andTableIWD-2500-1, Categories D-A,D-B,andD-C,asapplicable, forthe10-yearsystemhydrostatic test?Reply:(a)ItistheopinionoftheConunittee thatasanalternative tothe10-yearsystemhydrostatic testre-quiredbyTableIWB-2500-1, CategoryB-P,thefol-lowingrulesshallbeused.(I)Asystemleakagetest(IWB-5221) shallbeconducted atorneartheendofeachinspection in-terval,priortoreactorstartup.(2)Theboundarysubjecttotestpressurization duringthesystemleakagetestshallextendtoaHClass1pressureretaining components withinthesys-temboundary.

(3)Priortoperforming theVT-2visualexami-nation,thesystemshallbcpressurized tonominaloperating pressureforatleast4hoursforinsulated systemsand10minutesfornoninsulated systems.Thesystemshallbemaintained atnominaloperating pressureduringperformance oftheVT-2visualex-amination.

(4)Testtemperatures andpressures shallnotexceedlimitingconditions forthehydrostatic testcurveascontained intheplantTcchnical Specifica-tions.(5)TheVT-2visualexamination shallincludeatlcomponents withinthcboundaryidentified in(a)(2)above.(6)Testinstrumentation requirements ofIWA-5260arcnotapplicable.

(b)ItistheopinionoftheCommittee that,asanalternative tothe10-yearsystemhydrostatic testre-quiredbyTableIWC-2500-1, CategoryC-H,thefol-lowingrulesshallbeused.(I)Asystempressuretestshallbeconducted atorneartheendofeachinspection intervalorduringthesameinspection periodofeachinspection inter-valofInspection ProgramB.(2)Theboundarysubjecttotestpressurization duringthesystempressuretestshallextendtoaHClass2components includedinthoseportionsofsys-temsrequiredtooperateorsupportthesafetysystemfunctionuptoandincluding thefirstnormallyclosedvalve,including asafetyorreliefvalve,orvalveca-pableofautomatic closurewhenthesafetyfunctionisrequired.

(3)Priortoperforming theVT-2visualexami-nation,thesystemshallbepressurized tonominaloperating pressureforaminimumof4hoursforin-sulatedsystemsand10minutesfornoninsulatcd sys-tems.Thesystemshallbemaintained atnominalop-cratingpressureduringperformance ofthcVT-2visualexammation.

(4)TheVT-2visualexamination shallincludeaHcomponents withintheboundaryidentified in(b)(2)above.(5)Testinstrumentation requirements ofIWA-5260arenotapplicable.

(c)ItistheopinionoftheCommittee that,asanalternative tothe10-yearsystemhydrostatic testre-quiredbyTableIWD-2500-1, Categories D-A,D-B,orD-C(D-Bforthe1989Editionwiththe1991andsubsequent Addenda),

asapplicable, thefollowing rulesshaHbeused.(I)Asystempressuretestshallbeconducted atorneartheendofeachinspection intervalorduringthesameinspection periodofeachinspection inter-valofInspection ProgramB.(2)Thcboundarysubjecttotestpressurization duringthesystempressuretestshallextendtoallClass3components includedinthoseportionsofsys-temsrequiredtooperateorsupportthcsafetysystemfunctionuptoandincluding thefirstnormallyclosedvalve,including asafetyorreliefvalve,orvalveca-pableofautomatic closurewhenthesafetyfunctionisrequired.

(3)Priortoperforming theVT-2visualexami-nation,thesystemshallbepressurized tonominaloperating pressureforatleast4hoursforinsulated systemsand10minutesfornoninsulated systems.Thesystemshallbemaintained atnominaloperating pressureduringpcrformancc ofthcVT-2visualex-amination.

(4)TheVT-2visualexamination shallincludeaHcomponents withinthcboundaryidentified in(c)(2)above.(5)Testinstrumentation requirements ofIWA-5260arcnotapplicable.

SUPP.9-NC glth'~