ML092370646

Response to Request for Additional Information Reactor Coolant Pressure Boundary Visual Inspections Proposed Alternative - N1-I3-nde-024 and N2-I3-NDE-025

ML092370646
Person / Time
Site:	North Anna
Issue date:	08/24/2009
From:	Hartz L N Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
09-253A
Download: ML092370646 (5)

Text

10CFR50.55a VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261August24,2009U.S.NuclearRegulatoryCommissionAttention:DocumentControlDeskWashington,D.C.20555SerialNo.NL&OS/ETSDocketNos.LicenseNos.

09-253A RO 50-338 50-339 NPF-4 NPF-7 VIRGINIA ELECTRICANDPOWER COMPANY (DOMINION)

NORTH ANNA POWER STATIONUNITS1AND2 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REACTOR COOLANT PRESSURE BOUNDARY VISUAL INSPECTIONS PROPOSED ALTERNATIVE-N1-13-NDE-024ANDN2-13-NDE-025InaletterdatedMay12,2009(SerialNo.09-253),Dominionrequestedapprovalofanalternativetotheinspectionrequirementsoffootnote1includedin 10 CFR50.55a(g)(6)(ii)(E),ReactorCoolantPressure BoundaryVisualInspections, forNorthAnnaUnits1and2.Therequestedalternativewillpermitthe inspectionsperformedduringtheUnit1fall2007andUnit2fall2008refuelingoutagesonthebottommountedinstrumenttubes(8MI)tobeusedastheinitialreactorcoolantpressureboundaryvisualinspectioninplaceofthefootnoterequirementfortheinitialinspectiontobeperformedatthenextrefuelingoutageafterJanuary1,2009.TheNRCrequestedadditionalinformationinanAugust3,2009e-mail.Theresponsetotherequestedinformationisincludedintheattachmenttothisletter.Ifyoushouldhaveanyquestionsregardingthissubmittal,pleasecontactMr.ThomasShaubat(804)273-2763.

Sincerely, c.'>:;r-:LeslieN.HartzVicePresident-NuclearSupportServices

Attachment:

ResponsetoRequestforAdditionalInformationCommitments.madeinthisletter:None cc:U.S.NuclearRegulatoryCommissionRegionIISamNunn AtlantaFederalCenter 61ForsythStreet,SWSuite23T85 Atlanta, Georgia 30303Mr.J.E.Reasor,Jr.OldDominionElectricCooperative InnsbrookCorporateCenter4201DominionBlvd.Suite300GlenAllen,Virginia23060 NRC SeniorResidentInspectorNorthAnnaPowerStationDr.V.SreenivasNRCProject ManagerU.S.NuclearRegulatoryCommissionOneWhiteFlintNorthMaiIStop 8G9A 11555RockvillePikeRockville,Maryland20852Ms.K.R.CottonNRCProject ManagerU.S.NuclearRegulatoryCommissionOneWhiteFlintNorthMailStop16E1511555RockvillePikeRockville,Maryland20852SerialNo.09-253A Docket Nos.50-338/339 AlternativeforBMI Baseline InspectionsPage2of2 Serial No.09-253ADocketNos.

50-338/339 ATTACHMENT RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REACTOR COOLANT PRESSURE BOUNDARY VISUAL INSPECTIONS PROPOSED ALTERNATIVEN1-13-NDE-024andN2-13-NDE-025 VIRGINIA ELECTRICANDPOWER COMPANY (DOMINION)

NORTHANNAPOWER STATIONUNITS1AND2 SerialNo.09-253ADocketNos.

50-338/339 Page1of2REQUESTFOR ADDITIONAL INFORMATIONTHIRD10-YEARINSERVICE INSPECTION INTERVAL REQUESTSFORRELIEFNOS.N1-13-NDE-024AND N2-13-NDE-025 VIRGINIAELECTRICANDPOWER COMPANY NORTH ANNA POWER STATION.UNITS1AND2DOCKETNUMBERS 50-338 AND 50-339 BackgroundTheAmericanSocietyofMechanicalEngineers(ASME)CodeofrecordfortheNorthAnnaPowerStation(NAPS),Unit1third10-yearintervalinserviceinspectionprogramisthe1989EditionnoAddendaofAmericanSocietyofMechanicalEngineers(ASME)Code,SectionXIandforNAPS,Unit2itisthe1995EditionoftheASMECode,SectionXIthroughthe1996Addenda.ByletterdatedMay12,2009,VirginiaElectricandPowerCompany(Dominion)submitteditsthird10-yearintervalinserviceinspection(lSI)programplanRequestsforReliefNos.N1-13-NDE-024and N2-13-NDE-025forNAPS,Units1and2,respectively.Dominion'ssubmittalproposedtouseinspectionsthatwereperformedonthereactorbottom-mountedinstrument(BMI)penetrationsduringthefallof2007andfall2008forNAPS,Units1and2,respectively,inplaceoftheinitialinspectionsrequiredbyTitle10oftheCodeofFederalRegulations(10CFR)50.55a(g)(6)(ii)(E).10CFR50.55a(g)(6)(ii)(E)requireslicensees,toimplementASMECodecaseN-722"Additional Examinations for PWRPressureRetainingWeldsinClass 1 Components Fabricated with Alloy 600/82/182 Material."ThestaffreviewedtheinformationDominionprovidedthatsupportstheproposedReliefRequestNos.

N1-13-NDE-024 and N2-13-NDE-025andrequiredaresponseregardingthefollowingissues:

NRC Question 1Whatweretheresultsofthelicensee'sinspectionsthatwereperformedonthereactorbottom-mountedinstrumentnozzlepenetrationsduringthefallof2007andfallof2008forNAPS,Units1and2,respectively?Werethereanyindicationsofleakagefound,e.g.,signsofcorrosion,boricacidresidue?

Dominion ResponseTheBMIpenetrationshavebeeninspectedtwiceoneachunit,mostrecentlyduringthefallof2007andfallof2008forNorthAnnaUnits1and2,respectively.Therehavebeennoindicationsofleakage,nosignsofcorrosionandnoboricacidresiduefoundoneitherunit.

SerialNo.09-253ADocketNos.

50-338/339Page2of2 NRC Question 2Onpage3of4inthefirstparagraphofthelicensee'ssubmittaldatedMay12,2009,itwasnotedthatEnclosure1wasthe"ExaminerQualificationandResolutionsRequirements".ItappearstothestaffthatEnclosure1wasasummaryofthe"ExaminerQualificationandResolutionsRequirements"nottheactualdocument.Provideaclarificationortheactualdocument.

Dominion ResponseAtthetimetheexaminationswereperformed,CodeCaseN-722hadnotbeenissued.ASMECodeCaseN-722includesspecificrequirementsforthevisualexamination(VE)andthequalificationofpersonnelperformingtheVEsofthe 8Mls.Enclosure1tothe Relief RequestwasintendedtobeasummaryofhowDominionmettheserequirementsforthevisualexaminationofthe 8Mls.NRC Question 3Isthesamplesizeandselectionofcomponentsfortheinspectionsperformedinthefallof2007and2008forNAPS,Units1and2,respectively, equivalenttoTable1ofASMECodeCaseN-722?

Dominion ResponseYes,all8MIpenetrationswereinspectedduringthefall2007andfall2008refuelingoutagesforNorthAnnaUnits1and2,respectively.ThisapproachisconsistentwiththerequirementsofCodeCaseN-722,whichrequiresallpenetrationsbeexamined.