ML18037A207

LER 79-023/03L-0:on 791004,cooling Water Pump of Diesel Generator 103 Tripped.Caused by Burned Contacts in Breaker. Breaker Repaired & Pump Started Manually.Preventative Maint Procedure Will Be Revised

ML18037A207
Person / Time
Site:	Nine Mile Point
Issue date:	11/02/1979
From:	DUDA E NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053B179	List: ML17053B178 ML18037A207
References
LER-79-023-03L, LER-79-23-3L, NUDOCS 7911130338
Download: ML18037A207 (4)

Text

NRCFORM366'(7.77}U.S.NUCLEARREGULATORYCOMMISSION,4~o78CON'T~0178CONTROLBLOCK:IHYNHP9LICENSEECODE,'o'",',~LQRO5000220QT1Go61DOCKETNUMBER6869EVENTDESCRIPTIONANDPROBABLECONSEQUENCESQIODurinsteadstateoerationi100479QB1EVENTDATE7475REPORTDATELICENSEEEVENTREPORT,Q(PLEASEPRINTORTYPEALLREQUIREDINFORMATION)1QEOO-OOOOO-OOQoa1I1QE~QE1415LICENSENUMBER2526LICENSETYPE3057CAT58~O3~04bl03DieselGenerator,theassociatedcoolinwaterumtriedduetobreakermalfunction.Beforethebreakerwasmanuallclosedandcoolinwaterumrestartedtheeneratorcoolinwaterinletterner-~OSatureincreasedto210OF.Thedieselsr~O7heatdamaebutnonewasfound.Thecoolinwaterumbreaerwain-sectedandthecontactswerefoundtobeburnedandanau'~0880789SYSTEMCAUSECAUSECOMP.VALVECODECODESUBCODECOMPONENTCODESUBCODESUBCODE~EEQ>>EQ>>~AQ>>CKT5RKQ4~AQIE~lQIR.789IoII1213181920SEQUENTIALOCCURRENCEREPORTREVISIONLERiROEVENTYEARREPORTNO.CODETYPENO.Q17REPOIIT~79~~023~m~03~L~~02122232426272829303132ACTION.FUTUREEFFECTSHUTDOWNATTACHMENTNPRDQ'RIMECOMP.COMPONENTTAKENACTIONONPLANTMETHODHOURS+22SUBMITTEDFORMSUB,SUPPLIERMANUFACTURER[BJQIR~GQIE~ZQEELJQI0000~NIQEE~NQ74~AQEE5050QEE3334353637404142434447CAUSEDESCRIPTIONANDCORRECTIVEACTIONSQ270DieselGenerator103coolinwaterumtriwascausedbbreakermal-function.Thecontactsinthebreakerwerefoundtobeburnedanda.auxiliarycontactwasfoundstuckintheoenosition.Thebreakerwasrepairedandthepumpwasmanuallystartedtotestoerabilit.The4coolingwaterpumpbreakerpreventativemaintenancerocedurewillbe789FACILITY~3P,METHODOFSTATUS'4POWEROTHERSTATUS~'ISCOVERYE~E5Qso~009955QosNA~BBQET789Io1213444546ACTIVITYCONTENTRELEASEDOFRELEASEAMOUNTOFACTIVITYQ~zg)ZQ34WNA789104445PERSONNELEXPOSURESNUMBERTYPEDLSCRIPTIONQ39~000~ZQEENA789111213PERSONNELINJURIESs~000QooNADISCOVERYDESCRIPTIONQ32OperabilityTestLOCATIONOFRELEASEQ808080807897878NAMEOFPREPARFR91112LOSSOFORDAMAGETOFACILITYQ43910PUBLICITYISSUEDDESCRIPTION~L~JQ<<NA9IOE.Duda'F911180PHONE:GB698080NRCUSEONLYERsBOo00

't U.S.NUCLEARREGULATORYCOMMISSIONLICENSENUMBERQs.NRCFORM366(7.77)CONTINUEDPAGE2LER79-23~LICENSEEEVENTREPQRTCONTROLBLOCK:Q)(PI.EASEPRINTORTYPEALLREQUIREDINFORMATION)I6~0>NYNHPlQ203OR~OR789LICENSEECODE14152526LICENSETYPE3057CAT58CON'TQQ86061DOCKETNUMBER6869EVENTDATE7475REPORTDATE80EVENTDESCRIPTIONANDPROBABLECONSEQUENCESQ10~02tactwasfoundstuckintheoenosition.Thebreakerwasreaired~0304andthepumpwasrestartedmanuallytocheckitsoperation.TheDieselGeneratorOperabilityTestwassubsequentlyperformedandsuccessfull~OS~06completed.Thiseventhadminimalsafetyimplicationsduetothere-dundancyofthesystem.~07~os7880~OB78REVISIONLJCOMPONENTMANUFACTURER4447SYSTEih'ICAUSECAUSECohIP.VALVECODECODESUBCODECOMPONENTCODESUBCOOESUBCOOEGiGE~Q>>Q~Q~Q910111213181920SEQUENTIALOCCURRENCEREPORTLEAIAOEVENTYEARRFPORTNO.CODETYPEQ17REPORT~79~~02321222324262728293031ACTION.FUTUREEFFECTSHUTDOWNATTACHMENTNPRD.4PRIMECOMP.TAKENACTIONONPI.ANTMETHODHOURS~22SUBMITTEDFORMSUB.SUPPI.IER~GREIGE~025~QLID>>LJO2.02.CAUSEDESCRIPTIONANDCORRECTIVEACTIONS270revisedtoincorporateaseparateoperabi1itytestofthecoolingwaterOE.pumppriortoperformingtheentiredieselgeneratoroperabilitytest.34789FACILITYSTATUS'4POWEROTHERSTATUSQ30[115]Q25~Q2578910121344ACTIVITYCONTENTRELEASEOOFRELEASEAMOUNTOFACTIVITYQ36~Q33Q34789101144PERSONNELEXPOSURESNUMBERTYPEDESCRIPTIONQ30zz~QuS789111213PERSONNELINJURIESCKl~QLOSSOFOADAMAGETOFACILITYQ43TYPEDESCRIPTION9Q4278910PUBLICITYISSUEDDESCRIPTION~0~Qnn78910NAMEOFPREPARERMETHODOFDISCOVERY~Q3I45464580LOCATIONOFRELEASEQ808080806869PHONE:80NRCUSEONLYER5800DISCOVERYDESCRIPTION32 r~