ML17264A730

Part 21 Rept Re Defective 350 HP,1800 RPM,460 VAC,3 Phase, 5006P Frame,1.15 Sf,Vertical Hollow Shaft Motor Used as Service Water Pump motor.Safety-Relayed Cgiee Revised to Enhance Steps for Exam of Windings & Workmanship

ML17264A730
Person / Time
Site:	Ginna
Issue date:	11/06/1996
From:	MECREDY R C ROCHESTER GAS & ELECTRIC CORP.
To:	VISSING G S NRC (Affiliation Not Assigned)
References
REF-PT21-96 NUDOCS 9611150001
Download: ML17264A730 (8)

Text

CATEGORY1REGULAT~.INFORMATIONDISTRIBUTIONSTEM(RIDS)ACCESSIONNBR:9611150001DOC.DATE:96/11/06NOTARIZED:NOFAOIL:50-244RobertEmmetGinnaNuclearPlant,Unit1,RochesterGAlpH.NAMEAUTHORAFFILIATIONMECREDY,R.C.RochesterGas6ElectricCorp.RECIP.NAMERECIPIENTAFFILIATIONVISSING,G.S.

SUBJECT:

Part21reptredefective350HP,1800RPM,460VAC,3phase,5006PFrame,l.15SF,verticalhollowshaftmotorusedasservicewaterpumpmotor.Safety-RelayedCGIEErevisedtoenhancestepsforexamofwindings&workmanship.DISTRIBUTIONCODE:IE19TCOPIESRECEIVED:LTR1ENCL(SIZE:TITLE:,Part21Rept(50DKT)NOTES:LicenseExpdateinaccordancewith10CFR2,2.109(9/19/72).DOCKETI0500024405000244GRECIPIENTIDCODE/NAMEPD1-INTERNAILECENTENRRDRMPECBRES/DSIR/EIBRGN2RGN4COPIESLTTRENCL111111111111RECIPIENTIDCODE/NAMEVISSING,G.NRR/DISP/PSIB/BPDRWARD,M.RGN1RGN3COPIESLTTRENCL11111111110EXTERNAL:INPORECORDCTRNRCPDR1111NOACSILVER,ENUDOCSFULLTXT1111~>"tt~JygENNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATIONREMOVEDFROMDISTRIBUTIONLISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION,CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION415-2083FULLTEXTCONVERSIONREQUIREDTOTALNUMBFROFCOPIESREQUIRED:LTTR15ENCL15 Cr ANDROCHESTERGASANDEIECTRICCORPORATION~89EASTAVEMIJE,ROCHESTER,N.Y146d9-0001AREACODE7I65'-2700ROBERTC.MECREDYVicePresidentNuclearOperationsNovember6,1996U.S.NuclearRegulatoryCommissionDocumentControlDeskAttn:GuyS.VissingProjectDirectorateI-1Washington,D.C.20555

Subject:

10CFRPart2130DayReportR.E.GinnaNuclearPowerPlantDocketNo.50-244

DearMr.Vissing:

Inaccordancewith10CFRPart21,Rep'ortingofDefectsandNoncompliance,Section21(d)(3)(ii),whichrequires"WrittennotificationtotheNRC...ontheidentificationofadefectorfailuretocomply",theattached10CFR21reportisherebysubmitted.VelyyoursRobertC.Meedyxc:Mr.GuyS.Vissing(MailStop14C7)ProjectDirectorateI-1Washington,D.C.20555RegionalAdministratorU.S.NuclearRegulatoryCommissionRegionI475AllendaleRoadKingofPrussia,PA19406GinnaSeniorResidentInspector~ConqiXS<5000iVS,XX06PDRADOCK050002448PDR 10CFR2130DAYWRITTENREPORTPage2I.NAMEANDADDRESSOFTHEINDIVIDUALINFORMINGTHECOMMISSION:NAME:RobertC.MecredyVicePresidentNuclearOperationsADDRESS:RochesterGas&ElectricCorporation89EastAvenueRochester,NewYork14649II.IDENTIFICATIONOFTHEFACILITY,THEACTIVITY,ORTHEBASICCOMPONENTSUPPLIEDFORSUCHFACILITYWHICHFAILSTOCOMPLYORCONTAINSADEFECT:ThefacilityistheR.E.GinnaNuclearPowerPlant.Thebasiccomponentisa350HP,1800RPM,460VAC,3phase,5006PFrame,1.15SF,verticalhollowshaftmotorforuseasaServiceWater(SW)pumpmotor.ThiscomponentwasinstalledattheR.E.GinnaNuclearPowerPlanttoupgradethemotorforthe"A"SWpumpfroma300HPtoa350HPmotor.(The"A"SWpumpwasneverdeclaredoperablewiththisdefectivemotorinstalled.)III.IDENTIFICATIONOFTHEFIRMCONSTRUCTINGTHEFACILITYORSUPPLYINGTHEBASICCOMPONENTWHICHFAILSTOCOMPLYORCONTAINSADEFECT:Themotorwasacommercial-grademotormanufacturedby:U.S.ElectricalMotorsDivisionofEmersonElectricCo.8100W.FlorissantAve.POBox3946St.Louis,MO63136Themotorwasprocuredfrom:AuburnArmature,Inc.48CanogaSt.Auburn,NY13021Note:Thismotorwaspurchasedcommercial-grade,wascommercially-dedicatedbyRochesterGas&Electric,andsatisfiedalltestingrequirementsincludedintheprocurementdocuments.

Page3~IV.NATUREOFTHEDEFECTORFAILURETOCOMPLYANDTHESAFETYHAZARDWHICHISCREATEDORCOULDBECREATEDBYSUCHDEFECTORFAILURETOCOMPLY:A350HPmotorwasinstalledonthe"A"SWpumpinJuly,1996.Post-modificationfunctionaltestingrevealedunacceptablemeggerreadings.Themotorwasremovedfromthe"A"SWpump,disassembledandinspected.Theinspectionrevealeddegradationofmotorinsulationintegrityduetodamagedmotorleads,whichcouldresultinthefailureofthemotorinservice.Theoverallqualityofthemotorwasbelowthatnormallyexpectedforacommercialgrademotor.ThesafetyhazardwhichcouldbecreatedbysuchadefectisthecompletelossofServiceWater.Inthescenarioofthe"C"SWpumpoutofserviceandaconcurrentlossofpowertoBus17(whichsuppliespowertothe"B"and"D"SWpumps),alossofallSWwouldoccurifthe"A"SWpumpfailedtooperateduetotheidentifieddefect.V.THEDATEONWHICHTHEINFORMATIONOFSUCHDEFECTORFAILURETOCOMPLYWASOBTAINED:TheinformationwasobtainedonAugust5,1996.VI.INTHECASEOFABASICCOMPONENTWHICHCONTAINSADEFECTORFAILSTOCOMPLY,THENUMBERANDLOCATIONOF'ALLSUCHCOMPONENTSINUSEAT,SUPPLIEDFOR,ORBEINGSUPPLIEDFORGINNASTATION:Therearefour(4)SWpumpslocatedintheScreenhouseBuildingatGinnaStation.A350HPmotorhadpreviouslybeenprocuredseparately.Thismotorwasinstalledtoupgradetheexisting300HPmotoronthe"D"SWpumpinAugust,1995.This350motorisofsimilardesigntothe3motorsdiscussedbelow,andwasalsomanufacturedbyU.S.ElectricalMotors.ThismotorwastestedsatisfactorilyandplacedinserviceinAugust,1995,andoperatedtrouble-free.Asdiscussedbelow,thismotordidnotcontainadefect.Three(3)350HPmotors,manufacturedbyU.S.ElectricalMotors,werepurchasedatalaterdate(asagroup)forupgradeoftheexisting300HPmotorsonthe"A","B",and"C"SWpumps.Asdiscussedbelow,twoofthesethreemotorswerediscoveredtobedefective.

Page4VI~~.THECORRECTIVEACTIONWHICHHASBEEN,ISBEING,ORWILLBETAKEN;THENAMEOFTHEINDIVIDUALORORGANIZATIONRESPONSIBLEFORTHEACTION;ANDTHELENGTHOFTIMETHATHASBEENORWILLBETAKENTOCOMPLETETHEACTION:Thefollowingcorrectiveactionshavebeencompleted:1.GinnaStationMaintenancepersonnelremovedthedefective350HPmotorfromthe"A"SWpump,andshippedthismotorandoneuninstalled350HPmotortoanAppendixBmotorfacility.Thesetwomotorsbothexhibiteddegradationofmotorinsulationintegrity.Themotorsweretested,inspected,andconfirmedtobedefective.Theywererefurbishedbythemotorfacility,andreturnedtoGinnaStation.2.The"A"SWpumpremainedinoperableuntiloneoftheaboverefurbishedmotorswasreinstalledandsatisfactorilytestedinAugust,1996.3.Thesimilar350HPmotor,installedonthe"D"SWpumpinAugust,1995,hadshownnosignsofmotordegradation.However,thismotorwasremovedfromthe"D"SWpumpinOctober,1996,andwasreplacedbytheotherrefurbishedsparemotor.4.Thus,correctiveactionwascompletedforthesetwodefectivemotorsinAugust,1996,andthesetworefurbishedmotorsweresubsequentlyinstalledonthe"A"and"D"SWpumps,andhavefulfilledoperabilitytestrequirements.5~Electricaltestingontheothertwo350HPmotorsdidnotindicateanydegradationofthemotorinsulationintegrity.Nevertheless,asaconservativemeasure,theywereshippedtoanAppendixBmotorfacilityinOctober,1996,fordiagnosticsandtroubleshooting.Theseremainingtwo350HPmotorshavebeendisassembled,inspected,andtestedatanAppendixBmotorfacility.Electricaltesting,performedatthemotorfacility,achievedsatisfactoryperformanceresults,confirmingthatthemotor(previouslyinstalledonthe"D"SWpump)wasoperablewhileinservice.However,someminordeficientconditionswerenotedonbothmotors.Thesemotorswerealsorefurbished.Theserefurbishmentsareconsideredtobeconservativecorrectivemeasureswhichinvolvedmotorreleading,insulationredipandbearingrework.ThefollowingcorrectiveactionsarescheduledforcompletionbyMarch,1997:Safety-relatedmotorCommercialGradeItemEngineeringEvaluations(CGIEE's)willberevisedtoenhancestepsfortheexaminationofwindingsandoverallworkmanshiptoensuremotorsareconstructedwithacceptablequality.CGIEEpreparationguidelineswillbeenhancedtoincorporatethelessonslearnedfromthesedefectivemotors.

F4s Page5~VIII.ANYADVICERELATEDTOTHEDEFECTORFAILURETOCOMPLYABOUTTHEFACILITY,ACTIVITY,ORBASICCOMPONENTTHATHASBEEN,ISBEING,ORWILLBEGIVENTOPURCHASERSORLICENSEES:1.Sourcesurveillanceduringmotorassemblymayhavedetectedthisdefect.2.Adetailedphysicalinspection(ordisassembly)uponreceiptmayhavedetectedthisdefect.3.Completionofcommercialdedicationcouldbedependentuponsatisfactorycompletionofpost-modificationfunctionaltesting.