ML17334A957

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Responds to Request for Further Info Re Generic Ltr 83-28, Items 4.2.3 & 4.2.4.Replacement of Shunt Trip Attachment Will Be Implemented in Appropriate Plant Procedures
ML17334A957
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 04/22/1986
From: ALEXICH, ALEXICH M P
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: DENTON H R
Office of Nuclear Reactor Regulation
References
AEP:NRC:0838Q, AEP:NRC:8380, AEP:NRC:838Q, GL-83-28, NUDOCS 8604250050
Download: ML17334A957 (4)


Text

0~T'REGULATOR'II'XNFGRHATIGN-DIBTRIBUTIGNHYBTEH-<.R-IDB)ACCESSIONSNBR:Bb04250050DOC.DATE:Bb/04/22NOTARIZED:NOFACXL:50-315DonaldC.CookNuclearPowerPlantiUnitI.Indiana550-3kbDonaldC.CookNuclearPowerPlantiUnit2iIndianaAUTH.NAMEAUTHORAFFILIATIONALEXICHXndianaZcNichiganElectricCo.RECIP.NANERECIPIENTAFFILIATIONDENTONpH.R.OfficeofNuclearReactorRegulationiDirector(post851125

SUBJECT:

RespondstorequestForfurtherinforeQehericLtr8328>Items4.2.354.2.4.Replacementofshunttripattachmentwillbeimplementedinappropriateplantprocedures.DISTRIBUTIONCODE:A055DCOPIESRECEIVED:LTRENCLSIZE:TITLE:OR/LicensingSubmittal:Salem*TMSEventsQL-83-28NOTESRECXPIENTIDCODE/NAl'1EPWR-AADTSPWR-AEICSBPWR-APD4PDOiPWR-APBBINTERNAL:ADN/LFNBIE/DINRRBWRADTBNRRPWR-AADTS/RBIBREQI04COPIESLTTRENCLRECIPIENTIDCODE/MANEPWR-AEBPWR-AFOBWIdQINQTON>DPWR-ARBBELD/HDS3IE/DGAVTNRRLASHER'NRRPWR-BADTSNRR/TANBRQN3COPXESLTTRENCLEXTERNAL:24XNRCPDR02iILPDRNBIC0305TOTALNUNBEROFCOPIESREQUIRED:LTTR28ENCL I',ValhdWp~V')V...gp,IVWaa~!l'I4i',WI1'VaI,WVa.'IPddW,lIIIIWdWVIIIvQIld,.aladV)I~aW INDIANAgiNICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS,OHIO43216DonaldC.CookNuclearPlantUnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74ATWSITEMS4.2.3AND4.2.4CLARIFICATIONApril22,1986AEP:NRC:0838QMr.HaroldR.Denton,DirectorOfficeofNuclearReactorRegulationU.S.NuclearRegulatoryCommissionWashington,D.C.20555

DearMr.Denton:

ThisletterisinresponsetoarequestfromyourstaffforfurtherinformationwithregardtoGenericLetter83-28,Items4.2.3and4.2.4.TheseitemsconcerntheReactorTripBreakers(RTBs)andtheirattachments.Specifically,theseitemsrequirelife-cycletestingoftheRTBsandtheirattachmentsandperiodicreplacementofthebreakers,ortheircomponentsandattachments,consistentwithdemonstratedlifecycles.Life-cycletestingoftheshunttripattachment(STA)andtheundervoltagetripattachment(UVTA)hasbeenconductedbyWestinghouseElectricCorporation,theDonaldC.CookPlantbreakermanufacturer,fortheWestinghouseOwnersGroup.Thistestingspecifiedanidenticalqualifiedlifeof1250operationsforboththeSTAandtheUVTA.Currently,plantproceduresrequirereplacementoftheUVTAsafter1250operations.Althoughnotcontainedinplantproceduresatpresent,replacementoftheSTA,basedonthelife-cycletestingperformedbyWestinghouse,willbeimplementedintheappropriateplantprocedures.Therehasbeennolife-cycletestingperformedontheRTBitself.ThereisnoWestinghouse-recommendedperiodicreplacementinterval.ThisdocumenthasbeenpreparedfollowingCorporateprocedureswhichincorporateareasonablesetofcontrolstoinsureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Verytrulyours,8504250050850+88lPDR*DOCK050003l5PPDRM.P.AlezchQ$LVicePresidenti])wMPA/rjncc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.BruchmannG.CharnoffNRCResidentInspector-Bridgmano<>l)