ML081790011

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Supplemental Information Regarding Control Room Habitability
ML081790011
Person / Time
Site: Millstone  Dominion icon.png
Issue date: 06/26/2008
From: Bischof G T
Dominion, Dominion Nuclear Connecticut
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
08-0050C, TAC MD6115, TAC MD6116
Download: ML081790011 (4)


Text

Dominion Nuclear Connecticut, Inc.'i(lOO Dominion Boulevard, Glen Allen, Virginia 2.1060'X,*b Address: www.dorn.com June 26, 2008U.S.NuclearRegulatoryCommission Attention:

DocumentControlDesk Washington,DC20555-0001SerialNo.NL&OS/GAWDocketNos.LicenseNos.

08-0050C R1 50-336 50-423 DPR-65 NPF-49 DOMINION NUCLEAR CONNECTICUT, INC.MILLSTONE POWER STATIONUNITS2AND3 SUPPLEMENTAL INFORMATION REGARDING CONTROL ROOM HABITABILITY(TACNOS.MD6115ANDMD6116)OnJuly13,2007,DominionNuclearConnecticut,Inc.(DNC)submittedarequestforan amendmenttothe Technical Specifications(TSs)forMillstonePowerStationUnits2and3(MPS2andMPS3)(SerialNo.07-0440).TheproposedamendmentwouldreviseTS requirementsrelatedtocontrolroomenvelope habitabilityconsistentwiththeintentofNRC-approvedTechnical Specification TaskForce(TSTF)StandardTechnicalSpecificationChangeTraveler,TSTF-448,"ControlRoomHabitability,"Revision3.TheNRCsentDNCrequestsforadditional information(RAls)inletters dated November21,2007andJanuary28,2008.DNCrespondedtotheRAlsinlettersdated December7,2007(SerialNo.07-0790),March5,2008(SerialNo.08-0050),March25,2008(SerialNo.08-0050A)andJune9,2008(SerialNo.

08-00508).

As discussedinaconferencecallbetweenNRCstaffandDNConJune17,2008,DNCisprovidingadditionalclarificationforitsJune9,2008responsetoQuestion3inthe attachmenttothisletter.Question3wasincludedintheNRCRAIdatedJanuary 28,2008.Specifically,NEI99-03,Revision1isnotrelieduponinclaiminganyexceptionstotheASTME741testmethod.Shouldyouhaveanyfurtherquestionsinregardtothissubmittal,pleasecontactMr.

Geoffery A.Wertzat(804)273-3572.

Sincerely, Vice President-Nuclear Engineering COMMONWEALTHOFVIRGINIACOUNTYOFHENRICO

/f;it*L/ILILLNotaryPublic VICKI L.HULL NotaIy PublIc COIIIInOnWNIItI Of VIIgInIa I..., COfNnIuIon

......May'1.101'Theforegoing documentwasacknowledgedbeforeme,inandfortheCountyand Commonwealth aforesaid,todaybyGeraldT.Bischof,whoisVicePresident-NuclearEngineeringofDominionNuclearConnecticut,Inc.Hehasaffirmedbeforemethatheisdulyauthorizedtoexecuteandfiletheforegoing documentinbehalfofthatcompany,andthatthestatementsinthedocumentaretruetothebestofhisknowledgeandbelief.

iJ!Acknowledgedbeforeme(fay otJiL.nL, 2008.MyCommissionExpires:

MAy 31 ,lola I SerialNo.08-0050CDocketNo.50-336 50-423ControlRoomHabitabilitySupplementalInformationPage2of2Attachments:(1)ControlRoomHabitability(TACNos.MD6115andMD6116)-SupplementalInformation Commitmentsmadeinthisletter:Nonecc:U.S.NuclearRegulatoryCommission Region I475AllendaleRoadKingofPrussia,PA19406-1415 Mr.J.D.HugheyProjectManagerU.S.NuclearRegulatoryCommissionOneWhiteFlintNorth,MailStop08B311555RockvillePikeRockville,MD20852-2738NRCSeniorResidentInspectorMillstonePowerStation DirectorBureauofAirManagementMonitoringandRadiationDivisionCTDepartmentofEnvironmentalProtection79ElmSt.Hartford,CT06106-5127 SerialNo.08-0050C DocketNo.50-336 50-423ControlRoom Habitability Supplemental Information ATTACHMENT CONTROL ROOM HABITABILITY(TACNOS.MD6115 AND MD6116)SUPPLEMENTAL INFORMATION MILLSTONE POWERSTATIONUNITS2AND3 DOMINION NUCLEAR CONNECTICUT, INC.

SerialNo.08-0050COocketNos.50-336 50-423ControlRoomHabitabilitySupplementalInformationAttachment,Page1of1 CONTROL ROOM HABITABILITY SUPPLEMENTAL INFORMATIONThissupplementfurtherclarifiestheintentofONC'sapplicationoftheASTM E741 testingmethodologytonuclearpowerplantcontrolroomenvelopeintegrity.Specifically,asdiscussedinaconferencecallbetweenNRCstaffandONConJune16,2008,ONCisprovidinganamendedresponsetoQuestion3.Question3wasincludedintheNRCrequestforadditionalinformationdatedJanuary28,2008.

NRC QuestionONCreferencesNEI99-03,Revision1,AppendixEE,inAttachment1,Page7of 11 under I Exceptions.'TheNRCstaffhasnotreviewedNEI99-03,Revision1.Therefore,exceptionsusedinAppendixEEofNEI99-03,Revision1,havenotbeenreviewedbytheNRCstaff.Pleaseidentifyalternateplant-specificASTM E741exceptionsandprovideadetailedexplanationjustifyingtheacceptabilityoftheseexceptions.

ONC ResponseTheASTM E741testmethodwasnotwrittenspecificallyforuseinnuclearpowerplantcontrolroomenvelopetests.ExceptionsreferencedinONC'ssubmittalonJuly13,2007(SerialNo.07-0440)arelimitedtothoseexceptionsnecessarytomeettheintentoftheASTM E741methodologywhenapplyingittonuclearpowerplantcontrolroomenvelopetesting.Theseexceptionsaretypicallytakenbytestvendorsanddocumentedintestreports,asisthecasefor MPS3.WhenCREtestingisperformedatMPS2withouttheuseofavendor,ONewilldocumentthestepstakentoappropriatelyapplytheASTM E741testmethodologyinthesurveillance.NEI99-03,Revision1isnotrelieduponinclaiminganyexceptionstotheASTM E741 test method.