ML103130472

Kewaunee Power Station, Supplemental Information for the Review of the Kewaunee Power Station License Renewal Application

ML103130472
Person / Time
Site:	Kewaunee
Issue date:	11/09/2010
From:	Price J A Dominion Energy Kewaunee
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
10-665
Download: ML103130472 (6)

Text

Do min ion EnergyKewaunee, Inc.5000 Dominion Boulevard,GlenAllen,VA23060 DominionNovember 9, 2010UnitedStates Nuclear Regulatory Commission Attention:

DocumentControlDeskWashington,DC20555-0001SerialNo.: LR/MWH Docket No.:LicenseNo.:

10-665 RO 50-305 DPR-43 DOMINION ENERGYKEWAUNEE,INC.KEWAUNEEPOWERSTATION SUPPLEMENTAL INFORMATIONFORTHEREVIEWOFTHEKEWAUNEEPOWERSTATIONLICENSERENEWALAPPLICATIONDuringa telephone conferenceheldon Thursday , November 5 ,2010,membersoftheNRCandDominionEnergyKewaunee,Inc

.(DEK)staffsdiscussedthelicenserenewal commitment43to inspectASMEClass1 small-bore piping socketweldsinsupporttheKewauneePowerStation(KPS)licenserenewalapplication(LRA)(reference1).Asaresultofthe conferencecall,DEKis supplementingitsresponsetoRAI82.1.2-2,whichwassubmittedtotheNRCinReference2

.Attachment1tothisletterprovidesthe supplementalresponsetoRAI82.1.2-2.Shouldyouhaveanyquestionsregardingthissubmittal,pleasecontactMr.PaulC

.Aitkenat(804)273

-2818.Verytrulyyours, J.ViCOMMONWEALTHOF VIRGINIACOUNTYOFHENRICO GINGER LYNN MELTON Notary Public Commonwealth of Virginia 310847 My Commlilion expires Apr 30.2013.-..-.------------------.---MyCommissionExp ires:_----'--'----'---=-

_Theforegoingdocumentwasacknowledgedbeforeme,inandfortheCountyandStateaforesaid,today by J.AlanPrice ,whoisVicePresident-NuclearEngineeringofDominionEnergyKewaunee,Inc

.HehasaffirmedbeforemethatheisdulyauthorizedtoexecuteandfiletheforegoingdocumentinbehalfofthatCompany

,andthatthestatementsinthedocumentaretruetothebestofhisknowledgeandbelief

.Acknowledgedbeforemethis c,-WLdayof

,2010.\.:d o\'U+/-fCotaryPublic

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SerialNo.10-665DocketNo.50-305Page2of3

Attachment:

1.SupplementalResponsetoRAI82.1

.2-2 References

1.LetterfromD.

A.Christian(DEK)toNRC,"KewauneePowerStationApplicationforRenewed OperatingLicense,"dated August12,2008.[ADAMSAccessionNo

.ML082341020]2.Letterfrom L.N.Hartz(DEK)toNRC,"ResponsetoRequestforAdditionalInformationfortheReviewoftheKewauneePowerStationLicenseRenewal Application," dated September 23 ,2010.[ADAMS AccessionNo.ML102700162]

Commitmentsmadeinthisletter:1.LicenseRenewal Commitment43willberevised consistentwiththesupplementalresponsetoRAI82.1.2-2.Therevised commitmentisproposedtosupportapprovaloftherenewedoperatinglicense

,andmay changeduringtheNRCreviewperiod

.

cc:U.S.Nuclear Regulatory Commission Regional Administrator

, Region III 2443 Warrenville RoadSuite210 Lisle , IL 60532-4532Mr.K.D.Feintuch, Senior Project Manager U.S.Nuclear Regulatory Commission One White Flint ,MailStop 08-H4A 11555 Rockville PikeRockville,MD 20852-2738Mr.DanielDoyle Environmental Project Manager U.S.Nuclear Regulatory Commission

.MailStop 0-11 F1 Washington

,DC20555-0001Mr.JohnDailyLicenseRenewalProject Manager U.S.Nuclear Regulatory CommissionMailStop 0-11 F1 Washington

,DC20555-0001 NRC Senior Resident Inspector Kewaunee Power Station N490 Highway 42 Kewaunee ,WI54216 Public Service Commission of WisconsinElectricDivision P.O.Box7854Madison,WI53707 David Hardtke Chairman-TownofCarlton E2334 Lakeshore Road Kewaunee ,WI54216SerialNo.10-665DocketNo.50-305Page3of3 SerialNo.10-665 DocketNo.50-305 ATTACHMENT 1 SUPPLEMENTAL RESPONSETORAI 82.1.2-2 KEWAUNEEPOWERSTATION DOMINION ENERGY KEWAUNEE, INC.---

SerialNo.10-665DocketNo.50-305 Attachment 1/Page1of2 Supplemental ResponsetoRAI 82.1.2-2 Dur ing a telephone conferenceheldonThursday, November 5 ,2010,membersoftheNRCandDominionEnergyKewaunee

,Inc.(DEK)staffsdiscussedtheKewauneelicenserenewal commitment43toinspectASMEClass1 small-borepipingsocketwelds.TheNRC staffindicatedthatapositionon appropriate samplesizeforClass1 small-borepipingweldshadbeenestablishedandwillbeincludedinNUREG-1801

,Revision2, Generic Aging Lessons Learned (GALL)Report ,SectionXI.M35.ThestatedNRC staffpositionisasfollows:

If an applicant has never experienced a failure (a through-wall crack detectedinthe subject component by evidence of leakage , or through nondestructive or destructive examination)initsClass 1 small bore piping and has extensive operating history(morethan30 years of operationattime of submittingtheapplication)

, the inspection sample size may be as lowas3%oftheweld population or a maximum of10welds ofeachweldtypeforeach operating unit.For socket welds , opportunistic destructive examinationcanbe performedinlieu of volumetric examination

.Because more informationcanbe obtained from a destructive examinationthanfrom nondestructive examination

, the applicant maytakecreditforeachweld destructively examined equivalent to having volumetrically examined two welds.Asaresultofthe conference call ,DEKis supplementingitsresponsetoRAI82.1.2-2

,whichwas previously submitted ,asamended ,inDEKletter10-548datedSeptember 23 ,2010[ADAMSML 102700162]

.AtKewaunee

,thereare currentlyatotalof345socketweldsinASMEClass1 small-borepipingsystems.

Therefore ,thetotalnumberofASMEClass1 socketweldsthatwillbesubjectto volumetricexaminationis10welds.Intheeventthata demonstrated

, nuclear-industryendorsed,inspection methodologyisnotavailable, destructive examinations of socketweldswillbesubstitutedfor volumetr ic non-destructiveexaminations.Each destructive weldexaminationwillbeconsidered equivalenttoperformingtwo volumetric weld examinations

,suchthatamaximumoffive destructive examinationswillbeperformed

.Aminimumoffour volumetric examinationsortwo destructive examinations(oran equivalent combination of examinations)willbeperformedpriortotheperiodofextendedoperation.Toallowfororderlyplanningand schedulingofplantresourcesandoutageworkload,theremaining examinationswillbe performedwithinthreeyearsofenteringtheperiodofextendedoperation

.Theextended scheduleforperformanceoftheremaining examinationsisreasonablebasedonthe plant-specific operatingexperiencefortheASMEClass1 small-borepipingwelds.

SerialNo.10-665DocketNo.50-305 Attachment1/Page2of2 Commitment43inLRA AppendixA,USARSupplement,TableA6

.0-1issupersededbythefollowing:

Item Commitment Source Schedule 43 Ten volumetric examinationsofASMELetter10-665; FourClass1 small-bore socketweldswillbe Supplemental volumetricperformedusinga demonstrated, nuclear-Responseto examinationsindustryendorsed,inspectionRAI82.1.2-2ortwo methodologythatcandetectcracking destructivewithinthe specified examinationvolume,if examinations a methodologybecomesavailable.Inthe(oraneventthata demonstrated, nuclear-equivalentindustryendorsed

, inspectioncombinationof methodologyisnotavailable

, destructive examinations) examinationsofsocketweldswillbepriortothesubstitutedfor volumetric non-destructiveperiodof examinations

.Each destructive weld extended examinationwillbeconsidered equivalent operation.toperformingtwo volumetric weld examinations,suchthatamaximumoffive Remaining destructive examinationswillbe examinations performed.withinthreeyearsofenteringtheperiodof extended operation