IR 05000244/1994005
| ML17263A673 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/06/1994 |
| From: | MECREDY R C ROCHESTER GAS & ELECTRIC CORP. |
| To: | JOHNSON A R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17263A672 | List: |
| References | |
| NUDOCS 9406060037 | |
| Preceding documents: |
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| Download: ML17263A673 (4) | |
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pf,/E@fg/IIrrrrr///////////////////ROCHESTERGASANDELECTRICCORPORATION~ROBERTCMECREDYVicePrerldenlCloneNuclearProduclion~igg(g;g+g)]89EASTAVENUE,ROCHESTERN.Y.14649-0001TELEPHONEAREACODE7lB5462700May6,1994U.S.NuclearRegulatoryCommissionDocumentControlDeskAttn:AllenR.Johnson'WRProjectDirectorateI-3Washington,,D.C.20555Subject:ReplytoaNoticeofViolation50-244/94-05-01,datedApril6,1994R.E.GinnaNuclearPowerPlantDocketNo.50-244
DearMr.Johnson:
DuringanNRCinspectionconductedonFebruary8,1994toMarch8,1994,oneviolationofNRCrequirementswasidentified.Inaccordancewiththe"GeneralStatementofPolicyandProcedureforNRCEnforcementActions,"10CFRPart2,AppendixC,theviolationislistedbelow:10CFR50,AppendixB,CriterionXI,"TestControl,"states,inpart:nAtestprogramshallbe-establishedtoassurethatalltestingrequiredtodemonstratethatstructures,systems,andcomponentswill'performsatisfactorilyin.serviceisidentifiedandperformedinaccordancewithwrittentestprocedureswhichincorporatetherequirementsandacceptancelimitscontainedinapplicabledesigndocuments."Contrarytotheabove,twoconditionswereidentifiedthatdemonstratedthattestingwasnotbeingappropriatelyperformed.'pecifically:OnFebruary15,'1994,itwasdeterminedthatthetwomanualcontainmentisolationpushbuttonshadnotbeenperiodicallytestedeachrefuelingoutageasrequiredbyTechnicalSpecificationTable4.1.2item9.9406060037940525PDRADOCK05000244QPDR Letter:Subject:Date:Page2ViolationResponse94-05-01May6,1994OnMarch4,1994,thelicenseedeterminedthatcontainmentpressure(P)channelsP-947andP-948hadbeeninoperablesinceJune1992,duetoanobstructioninthecommoncontainmentpressuresensinglineforthepressuretransmitters(PT)-947andPT-948.Themonthlychannelfunctionaltestandannualchannelcalibration,asrequiredbyTechnicalSpecificationTable4.1-1,items17and25,associatedwiththesechannels,didnotdetecttheobstructedtubingduetotheobstructionbeinglocatedinanuntestedsectionofthepressuresensinglinebetweentheopenendinthecontainmentvesselandtherootisolationvalvesforPT-947andPT-948.Theresponsetotheviolationisprovidedseparatelyforeachofthetwoconditionsstated.A.ResponseforContainmentIsolationPushbuttons(1)thereasonfortheviolation,or,ifcontested,thebasisfordisputingtheviolation:RochesterGas&ElectricCorporation(RG&E)acceptstheviolation,andacknowledgesthatourtestprogramdidnottesttheentiremanualContainmentIsolationcircuitryeachrefuelingoutage,asrequiredbyTechnicalSpecificationTable.4.1-2,item9.RG&EformedaTechnicalSpecificationReviewTeamasaresultofLER93-005.(RefertoGinnaDocketNo.50-244,LER93-005.)ThisreviewteamwastaskedwiththeresponsibilityofidentifyingandreviewingprocedureswhichimplementTechnicalSpecificationsurveillancerequirementstoassureallSection4testrequirementswereproperlyimplemented.ThisreviewteamidentifiedadeficiencyinthattheContainmentIsolationpushbuttonsarenotfunctionallytestedeachrefuelingoutage.Uponself-identificationoftheomittedsurveillance,theuntestedContainmentIsolationpushbuttonwasimmediatelydeclaredinoperable,andtheappropriateLimitingConditionforOperation(LCO)wasentered.(2)thecorrectivestepsthathavebeentakenandtheresultsachieved:ProcedureRSSP-2.1,"SafetyInjectionFunctionalTest",hasbeenupgradedtoformallydocumentthetestingofbothmanualContainmentIsolationpushbuttons.ThistestwassuccessfullyconductedonApril7,1994,andwillbeperformedatthefrequencyrequiredbyTechnicalSpecifications.
lfLetter:Subject:Date:Page3ViolationResponse94-05-01May6,1994(3)thecorrectivestepsthatwillbetakentoavoidfurtherviolations:SincetheomittedsurveillancewasidentifiedasadirectresultoftheprogrammaticreviewoftheentireTechnicalSpecificationSection4surveillancerequirements,noadditionalcorrectivestepswillberequiredtoavoidfurtherviolations.(4)thedatewhenfullcompliancewillbeachieved:TheContainmentIsolationpushbuttonsweretestedonApril7,1994.Fullcompliancewasachievedatthecompletionofthistesting.B.ResponseforContainmentPressureChannelsthereasonfortheviolation,or,ifcontested,thebasisfordisputingtheviolation:RG&Eacceptstheviolation,andacknowledgesthatourtestprogramdidnotdetecttheobstructedtubing,whichwascausedbyrustaccumulation.Thiswasanisolatedcase,resultingfromwaterbeingretainedfollowingtransmittercalibration.Testingandcalibrationoftheassociatedvalvesandtransmittersisnormallyperformedtomeet10CFR50AppendixJ,ASME,andTechnicalSpecificationsrequirements.However,noneofthesetestsorcalibrationsweredesigned,todetectanobstructioninthepassivetubingfromthepenetrationtotherootvalve.Theobstructedtubingwasself-identifiedthroughaquestioningattitudeand.aggressivefollow-throughfromRG&Eemployees.Promptcorrectiveactionswereundertakenuponidentificationoftheproblem.ItshouldbenotedthatRG&Ewasintheprocessofrevisingthetestprocedureswhenthisconditionwasidentified.Theenhancedtestprocedurewouldhaveidentifiedtheobstructedtubing.Theenhancementwasunderwayaspartofourcontinuingefforttoimprovetestprocessesandprocedures.thecorrectivestepsthathavebeentakenandtheresultsachieved:ThemethodofcalibrationoftheContainmentpressuretransmittershasbeenchangedtousegas(insteadofwater)asthetestmedium.TheserevisedprocedureswereusedtoperformcalibrationsoftheContainmentpressurechannelsduringthe1994refuelingoutage.Continueduseofgasastestmediumwilleliminatethepotentialforobstructionscausedbyrustingofthepressuresensingtubing.
Letter:Subject:Dat:'age4ViolationResponse94-05-01May6,1994Testprocedureswereenhancedtodetectanyobstructionsinthepreviouslyuntestedpressuretubing.Theenhancedtestprocedureswereutilizedduringthe1994refuelingoutagewithsatisfactoryresults.Similarpenetrationswereinspectedduringthe1994refuelingoutage,andnootherinstancesofrustwereidentified.(3)thecorrectivestepsthatwillbetakentoavoidfurtherviolations:Thiswasconfirmedtobeanisolatedcase.Becausetheaffectedcalibrationandtestprocedureshavebeenenhanced,noadditionalcorrectivestepswillberequiredtoavoidfurtherviolations.(4)thedatewhenfullcompliancewillbeachieved:FullcompliancewasachievedonFebruary4,1994,whenP-947andP-948weredeclaredoperable.(RefertoGinnaDocketNo.50-244,LER94-002,fordetails.)VeryTrulyYours,RobertC.Mecredyxc:Mr.AllenR.Johnson(MailStop14D1)PWRProjectDirectorateI-3Washington,D.C.20555U.S.NuclearRegulatoryCommissionRegionI475AllendaleRoadKingofPrussia,PA19406GinnaUSNRCSeniorResidentInspector