ML17334B773

Provides Present Plans for Addressing CRDM Housing Issue at Plant

ML17334B773
Person / Time
Site:	Cook
Issue date:	05/13/1998
From:	SAMPSON J R INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:1288, NUDOCS 9805200303
Download: ML17334B773 (4)

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CATEGORY1~REGULA'l%YINFORMATIONDISTRIBUTIOWSYSTEM(RIDS)ACCESSIONNBR:9805200303DOC.DATE:98/05/13NOTARIZED:NODOCKETIFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,IndianaM05000315',50-3;L6DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATIONSAMPSON,J.R.IndianaMichiganPowerCo.RECIP'NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)l

SUBJECT:

ProvidespresentplansforaddressingCRDMhousingissueatplant.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES:INTERECIPIENTIDCODE/NAMEPD3-3LASTANG,JFILECENNRRDE/EMCBNRR/DSSA/SPLBNUDOCS-ABSTRACTCOPIESLTTRENCLRECIPIENTIDCODE/NAMEPD3-3PDNRR/DE/ECGB/ANRR/DRCH/HICBNRR/DSSA/SRXBOGC/HDS3COPIESLTTRE11111CL0REXTERNAL:NOACNRCPDRDUENNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATIONREMOVEDFROMDISTRIBUTIONLISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION,CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION415-2083TOTALNUMBEROFCOPTESREQUTRED:LTTR13ENCLQ' 0i,E IndianaMichigan~PowerCompany500CircleDriveBuchanan,Ml491071395IN91ANSlStlCNISANPQWMMay13,1998AEP:NRC:1288DocketNos.50-31550-316U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskMailStop0-Pl-17Washington,D.C.20555-0001Gentlemen:DonaldC.CookNuclearPlantUnits1and2PARTLENGTHCONTROLRODDRIVEMECHANISM(CRDM)HOUSINGISSUEInalettertoMr.FrankJ.Miraglia,DeputyDirector,OfficeofNuclearRegulation,WOG-98-037,datedMarch6,1998,theWestinghouseOwnersGroup(WOG)respondedtotheNRC'sformalrequesttoactivatetheregulatoryresponsegroup(RRG),andaddressconcernsregardingthegenericimplicationsofthepart~lengthCRDMhousingissueidentifiedatPrairieIslandunit2.LetterWOG-98-037documentedtheinformationprovidedbytheWOGduringameetingheldwiththeNRConFebruary27,1998.Atthatmeeting,theWOGpresentedinformationregardingthecurrentassessmentoftheCRDMhousingissueandtheactivitiesplannedtocontinuetoresolvethepotentialgenericconcerns.TheconditionassessmentreportprovidedtotheNRCemphasizedthattheincidentisanisolatedone,andthatitisunlikelytooccurinotherhousings.Furthermore,evenifitweretooccuranditledtoseverenceofapartlengthhousing,theeventhasalreadybeenconsideredaspartoftheplantdesignbasis;therefore,thereisnosafetyconcern.TheaffectedWOGmemberutilitiesmetonMarch2,1998,toreviewanddiscussthesameinformationpresentedtotheNRC.TheoutcomeofthismeetingwastheformationofasubgroupthatwillcontinuetosupportWestinghousememberutilitiesinrespondingtothisissue.Fromthediscussionsatthatmeeting,theWOGRRGrecommendedthattheaffectedutilitiesvoluntarilyconsidernotifyingtheNRCoftheirplanstoaddressthisissue.Forplantscurrentlyinrefuelingorcoldshutdown,itwasrecommendedthattheutilitiesdockettheirplanstoaddressthisissuewithinthirtydays,orpriortostartup.ThisletterprovidesourpresentplansforaddressingtheCRDMhousingissueatCookNuclearPlant.Anultrasonicinspectionofthe.eightpart~lengthCRDMswillbeperformedforunits1and2.,Theinspectionwill=beperformed,ontheupperandlowerpressure.housingfullpenetrationweldsusinga.qualifiedultrasonicinspectionprocedureforflawdetection;-9805200303980513PDRADOCK05000815pPDR U.S.NuclearRegulatoryCommissionPage2AEP:NRC:1288Theunit1and2inspectionsarescheduledtostartinearlyMay1998.Theinspectionswillbecompletedinbothunitspriortorestart.Furtheractionswillbebasedoninspectionresults.Sincerely,,P.p~J.R.SampsonVicePresident/vlbc:J.A.AbramsonA.B.BeachMDEQ"DW6RPDNRCResidentInspector