ML17261A589

Responds to Violations Noted in Insp Rept 50-244/87-16. Corrective Actions:Field Personnel Requested to Rept Any Discrepancies Found Using Drawing Change Request Form & Drawing Development Activity Currently in Progress

ML17261A589
Person / Time
Site:	Ginna
Issue date:	08/26/1987
From:	KOBER R W ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8709010272
Download: ML17261A589 (10)

See also: IR 05000244/1987016

Text

REGULATORYINFORMATIONDIBTRIBUTIONSYSTEM(RIDS)r.'CCESSIONNBR:8709010272DOC.DATE:87/08/26NOTARIZED:YESFAGIL:50-244RobertEmmetGinnaNuclearPlantiUnitiiRochesterGAAUTH.NAMEAUTHORAFFILIATIONOBERONR.M.RochesterGashElectricCorp.RECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)4SUBJECT:RespondtoviolationsnotedinInspR'ept50-244/87-16.Correctiveactions:fieldpersonnelrequestedtoreptanydiscrepanciesfoundusingdrawingchangerequestform5drawingdevelopmentactivitycurrentlyinprogress.DISTRIBUTIONCODE:IE01DCOPIESRECEIVED:LTRENCLSIZE:TITLE:General(50,Dkt)-InspRept/NoticeofViolationResponseNOTES:LicenseExpdateinaccordancewith10CFR2i2.109(9/19/72).DOCKET0500024405000244RECIPlENTIDCODE/NAMEPDi-3PDtINTERNAL:AEODNRP,MQR1SBEAU.DNRR/DREP/EPBNRR/DRISDIR'QENiJGFIRGN1FILE01COPIESLTTRENCL11111'RECIPIENTIDCODE/NAMEST*HLE.CDEDRONRR/DOEADIRNRR/DREP/RPBNRR/PMAB/ILPBOGC/HDB2'EBDEPYGICQPIESLTTRENCLI2ERNAL:LPDRNSlCNRCPDRTOTALNUMBEROF'OPIESREQUIRED:LTTR20ENCL'

ROCHESTERGASANDELECTRICCORPORATIONo89EASTAVENVE,ROCHES'fc:PN.K>4e49-000>ROGERVZ.tCOBERVlCCPRCSlOCttZCl.CCTRtCPROVVCTlOttAugust26,1987TCCCHONtAttt'Acoocltt'46.2700U.S.NuclearRegulatoryCommissionDocumentControlDeskWashington,D.C.20555Subject:InspectionReport50-244/87-16NoticeofViolationR.E.GinnaNuclearPowerPlantDocketNo.50-244DearMr.Russell:RoutineInspectionReport50-244/87-16AppendixAstatedinpart:DuringtheinspectionconductedonMay31,1987throughJuly4,1987,andinaccordancewiththeGeneralStatement.ofPolicyandProcedureforNRCEnforcementActions10CFRPart2,AppendixC(EnforcementPolicy1986),thefollowingviolationwasidentified:TechnicalSpecification6.8.1statesthatwrittenproceduresshallbeestablished,implemented,andmaintainedcoveringactivitiesreferencedinAppendixAofRegulatoryGuide1.33,November1972.AppendixAparagraphI"ProceduresforPerformingMaintenance",discussescontrolofmodificationwork.Thelicensee'sEngineeringProcedureQE-303,"Preparation,Review,andApprovalofEngineeringDrawings&CircuitScheduled"states:3.6.23.6.3ForthosedrawingscompletedbyaDraftsman,DesignDraftsman,orEngineeringAssistant,thedrawingshallbecheckedforformat,draftingstandardsandtechnicalaccuracybyaResponsibleEngineer.TheResponsibleEngineershallsignanddatethespaceinthetitleblock.TheEngineeringManagerorLeadEngineer,inthosedisciplineswithengineerssodesignated,shallreviewthedrawingforcompliancewiththisprocedureandtechnicaladequacyandshallapprovethedrawingbyinitialinganddatingthespaceprovidedinthetitleblock.Contrarytotheabove,controlleddrawing33013-756,"TSC-VitalBatteryIntertie",didnotaccuratelyreflectinstalledfuseclipandwiresizesforallD.C.distributionpanelslistedonthedrawing.Thisdrawingdesignated"As-built'(EWR4374)"wasinitialledbythedraftsman,achecker,theresponsibleengineer,andtheEngineeringManageronApril21,1987.8709010272870826PDRADOCK050002448PDR

ROCHESTERGASANDELECTRICCORPORATIONDATE:August26@1987SHEETNO.2RG&EagreeswiththeviolationandoffersthefollowinginresponsetotheNoticeofViolationandtheassociatedunresolvedissue(item4b)relatedtotheviolation:Asstatedintheviolation,drawing33013-756wasissuedAs-builtonEWR4374consistentwithEngineeringProcedureQE303.The8threvisionofthedrawingappropriatelyreflectedthespecificmodificationperformedinEWR4374.Thediscrepanciesnotedbytheinspectorwerevalidfindings,however,theywerenotrelatedtoEWR4374.EngineeringProcedureQE303requiresthateachmodificationbeissuedAs-builtuponcompletionofthework.Changesareauthorizedforonlythosedrawingsorportionsofdrawingsthatareaffectedbythespecificmodification.Errorsonunrelatedportionsofadrawingarecorrectedifrecognizedatthetimearevisionismade.FieldpersonnelarerequestedtoreportanydiscrepanciesfoundusingtheDrawingChangeRequestform.RG&EEngineeringbeganaprogramtorecovertheconfigurationofClass1ED.C.fusingwhendiscrepancieswerediscoveredduringthereviewoftheD.C.systemundertheSystematicEvaluationProgram(SEP)andAppendixRreviewprogram.Themostlikelycauseforthefinding,asdiscussedinthenoticeofviolation,canbeattributedtothegeneralnatureoftheoriginalGinnadrawingswhichareusedtodescribetheD.C.system.Specifically,panellayoutdrawingsareusedasasinglelinediagramwithlittlespecificfuseinformation.Ineachcasewhereadiscrepancywasidentified,anevaluationwasperformedtoassessthesafetyimpactofthediscrepancy.Itwasdeterminedthatthesafetyfunctionswereassured.Itwasalsodeterminedthatnewdrawingswererequiredtoreflect,asaminimum,fusesizesandtypesandtoshowtheinterconnectionsbetweenfusesusedinallsubsystems.Thedrawingdevelopmentactivityiscurrentlyinprogressalongwithacompletere-evaluationofallfuses,clipsandwiresizes.SpecificationEE-100,"D.C.FuseRequirements",developedforthefuseupgradeprogram,identifiesalltherequirementsapplicabletotheGinnaStationD.C.systemandencompassesfuses,clipsizes,wireampacities,fusetestinganddesignrequirements.Configura-tioncontrolisachievedthroughGinnaStationProcedureA-60,"ControlofD.C.SystemFuseSizeandCoordination",whichrequirestheuseofthenewconfigurationcontroldrawingsinreplacingexistingfusestoensurethattheproperfusetypeandratingisused.EngineeringreviewsarecurrentlyscheduledtobecompletedbyDecember,1987,atwhichtimeitisexpectedthatsomefuseswillbeidentifiedforreplacement.Sincethefusestobereplacedareinoperatingsystems,itisanticipatedthattworefuelingoutageswillberequiredtocompletethereplacementprogram.Thisisdue,inpart,toanticipatedschedulingproblemsassociatedwithremovingspecificsystemsfromservice.Therefore,thereplace-mentprogramshouldlastthroughtheendofthe1989refuelingoutage.ItisbelievedthatthefuseupgradeprogramalongwithexistingplantprocedureswillstrengthenconfigurationcontrolontheD.C.distributionsystem.

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ROCHESTERGASANDELECTRICCORPORATIONDATE:August26,1987SHEETNO.3Part4boftheinspectionreportidentifiestwotechnicalissuesthatappeartobeunresolved.Theseissuesareaddressedbecausetheyaredirectlyrelatedtothenoticeofviolation.Specifically,ajustificationfortheapparentuseofoversizedfusesandundersizedclips,needstobeprovidedalongwitharesolutionofthedrawingcontrolissuecitedbytheinspector.Ithasbeen'establishedthatthesafetyfunctionsprovidedbytheD.C.systemareassuredifthefusingsystemperformsfourprimaryfunctionswhichattimespartiallyconflict.Thesefunctionsarelistedbelowinorderofpriority.l.AssurethatnoClasslEloadispreventedfromperformingitssafetyfunctionbyprematurefuseopening.2.AssureadequatecoordinatedfaultprotectionforallD.C.circuits.3.Provideshortcircuitprotectiononallcircuits.4.Provideoverloadprotectiontopreventacceleratedagingofcableinsulation.iUseoftheNationalElectricalCodeAmpacityTablesisnotalwaysappropriateforallofthesefunctions.Itisnecessarytoconsidereachcircuitonacasebycasebasis.Eighteen(18)circuitshavepreviouslybeenidentifiedashavingoversizedfuses.Thatis,thefuseratingwasfoundtobegreaterthanthecurrentratingofthewireusedinthecircuit,asspecifiedbytheNationalElectricalCode(NEC).TheNECwasinitiallyselectedasaconvenientmeansofspecifyingwireampacitiesbecausetheNECoffersaveryconservativeapproachandwouldbeapplicableinallcircuits.Asnotedpreviously,theNECisnotalwaysappropriatefornuclearplantapplication.Asanalternative,thedesigncriteriaassociatedwiththefuseprogramalsoallowstheuseoftheanalyticalmethodsdevelopedbythe.InsulatedPowerCableEngineersAssociation(IPCEA)toestablishthelargestampacitiesappropriateforspecificcircuits.Inaddition,manufacturersampacityvalueswhichliebetweenthe.NECandthemaximumIPCEAvaluesmayalsobeused.SpecificationEE-100,developedspecificallyforthefuseupgradeprogram,hasbeenrevisedtoincludeampacityvaluesasrecommendedbythemanu-facturer.Italsorequiresthataspecificanalysisbeperformedifthemanufacturer'sampacityvaluesaretobeextended.Mostofthe18circuitswithapparentoversizedfusesarecaseswherea40amperefuseisusedinanumber10wirecircuit.SpecificationEE-100showsthata45amperefusewillaffordadequateprotectioninsuchapplications.Therefore,theissueofusing40amperefusesonanumber10wirecircuitsistechnicallyresolved.The100amperefuseusedwithanumber10wireintheNuclearSamplePanelcircuitwasnotappropriate.ThisisamisapplicationthatwillbecorrectedusingexistingGinnaStationProcedures.Thecon-

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ROCHESTERGASANDELECTRICCORPORATIONDATE:August26,1987SHEETNO.4sequenceoftheuseofsuchanoversizedfuseisthatthecircuitcouldexceedits'recommendedtemperaturelimitif,intheremotechance,itwassubjectedtoahighimpedancefault.Thiscouldcauseacceleratedagingoftheinsulationwhichwouldrequirethereplacementofthecable.However,theprimaryfuseand/orthebackupfusewouldclearalllargermagnitudefaults(shortcircuits)priortoany.physicaldamageoccurringtothesystem.Theinspectoralsoidentifiedtwocircuits.thathadfuseclipsratedlessthanthefusesizes1istedonthedrawing.Specifically,a30ampereclipwaslistedonadrawingforusewitha40amperefuse.Fuseclipsaredesignedsothatthey-canonlyacceptfusesratedattheclipratingorless.Thatis,a30ampereratedclip.canonlyaccepta30amperesfuseorasmallerratedfuse.Fuses,.rated3lamperesthrough60ampererequirea60ampereclip,etc.Afieldverificationconfirmedthatthe40amperefuseismountedina60ampereclip.Inallcases,theexistingclipshaveanequalorgreatercurrentratingthanthefuse.Therefore,thereareno~adverseoperatingconsequencesassociatedwiththisfinding.Allfuseclipsshownonexistingdrawingswillbereviewedaspartoftheupgradeprogramandcorrectionsmadeasrequired.Alla'ctivitiesassociatedwiththeproperselectionofD.C.fusesandassociatedcomponentsalongwitharesolutionofallassociateddrawingdiscrepancieswillbecompletedbytheendofthe1989refuelingoutage.Yours"truly.,RogerW.KoberSubscribedand.,sworntomeonthis26th,dayofAugust1987CAROLM.DRYERNotaryPnbrwinfheStateofNewYor'kMONROECOUNTYCornrniaaiorrErrfireaFeb.28,192Pxc:Mr.WilliamRussellRegionIAdministratorU.S.NuclearRegulatoryCommission631ParkAvenueKingofPrussia,PA19406.,T.Polich,GinnaResidentInspector