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{{#Wiki_filter:NRCFORM366g77)LICENSEEEVENTREPORTU.S.NUCLEARRKCULATORYCOMMISSIONCONTROLBLOCK:IIQl(PLEASEPAINTORTYPL'LLRKOUIAEOINFORMATION)[OO~]14CON'T~0I~03Q.2526LCE.NSE,Y)sJOOl9LICENSEECQQE14'5LICSh$4NVM4KR57~T"'Ell-LEoI''a~4041QQCKETNUMSER44EVENTOKSCRIPTIONANOSRQBABLKCONSKOUEiNC'KSQIODurinnormaloerationsCEA30reedQ~<'QEVENTCATE14ISASSORTQAE40switchositionindicationchannelfailed.ThechannelwasdeclaredINOPERABLE.InaccordancewithTS3ILIIIElllI-00III-1041111111Q~Qwwithdrawniinonceer12hoursatthisposition.Thechannelwasrepairedandreturnedtoservice.Thischannelfailedaain8dasafterreturnintoservice.~07~08ThesameactionerTS3.1~3.3wasaainerformedbutthechannelhasnobeenreairedet.Thisisthefirsteventofthiste.40~OB5Y5TK4ICAUSECAU5ECQMS.VALVECQQECQQE5VSCQQECCMSONENTCQQESVSQQESUECQOS~BS~ESLee~IN404NQLoeLee79101112ll191929SKQVENTIALOCCURRENCE~REPORTREVISION~LERIROEVENTYEAARESORTNO.CQQETYPE~NQ.QEENoa<<~0~~003~m~03~L~~0'll22'll242621252920llllACTIQIISUTUREEFFECTSsaVTQQWNATTACHMENTNSRQ44PRIMECQMS.CQMSONKNTTAKENACTIONCNPLANTMETHQQNQLNAS225USMITTEQFOAMSUb.SVPSIJKRMANUFACTURERLNNSLaSLIJSUZS00NlLUQLNLSXIIIQ~4043$36~4041424441CAUSEOESCRIPTIONANOCORRECTIVEACTIONSQ270Thecauseofthesechannelfailes'stiallreairedbrelacinashortedthiswasthesecondsarecablethatwastriedthechannelremainedfailedwhenthefirstsarecablewasinstalled.Thechannelfailurecauseandreairwillbeinvestiateddurinthe1980refuelingoutage.4aa(~laN'NA749I'I12LC$5QFCRQAMOE0FACILITYQ43TYIEEOESCRIPTIQNEZlZJO269'0rVSLIC:TYQESCAIPT:QN~0~NIP)9'0'AM.A.Schoppman99FACILITY~~30METIIOQOFSTiATUS'4POWEROTIIEASTATUSP/OISCQVERVeonILISLEENJJ!IS~.L~ES9910'll1244ACllVITYCONTENTRELKASEQOFRELEASEAMQUN'TOPACTIVITYQSSB~ZQ32~ZQ3NAl99104446IEEASQNNELEXIIOSVAKS~IE~000Q>>~ZQEENA791112ll~ERSQNNELINIURIESEKl~~0QAOOISCOVEAVQESCAISTIQNQ20craterObservationNALOCATIONOSRELEASEQSB50NRCUSEONLY646940PH0NE:305552-3802800$BEO 4
{{#Wiki_filter:NRCFORM366g77)LICENSEEEVENTREPORTU.S.NUCLEARRKCULATORY COMMISSION CONTROLBLOCK:IIQl(PLEASEPAINTORTYPL'LLRKOUIAEOINFORMATION)
ReportableOccurrence335-SO-3LicenseeEventReportPaeTwoAdditionalEventDescriptionandProbableConseuencesDuringnormal100Kpoweroperation,CEA830reedswitchpositionindicationchannelfailed.ThechannelwasdeclaredINOPERABLE.InaccordancewithTechnicalSpecification3.1.3.3,CEA830waswithdrawntotheUpperElectricLimitposition("FullOut"),CEA430wasverifiedatleastonceper12hoursatthispositionaspoweroperationcontinued.Elevendayslater,followinganunrelatedplanttrip,investigationofthecauseforthechannelfailureseemedto.ndicateashortedpowercableinthevicinityofthereactorvesselhead.Thiscablewasreplacedwithasparecable,butthefailedchannelremainedINOPERABLE.Asecondsparecablewasinstalledandthychannelbecameoperable.Thechannelwassuccessfullytestedforsatis'factoryoperationanddeclaredOPERABLE.Theplantwasstartedupandreturnedto100&#xc3;poweroperation.EightdaysafterreturningthischanneltoOPERABLEstatus,itfailedagain.Thesameappropriateactionsstatedabovewereperformedagain.CEA430reedswitchpositionindicationchannelispresentlyINOPERABLE.CEA830isinregulatingCEAgroupnumber1whichisnotusedforpowershaping.Also,itisthelastregulatinggrouptomoveduringinsertion.Therefore,CEA$30canbemaintainedfullyoutattheUpperElectricLimitwithoutanyeffectonoperationsorgroupalignment.AllCEA'sweretrippableduringtheevent.ThisproblemwillbeinvestigatedandresolvedduringtherefuelingoutagescheduledHarch15,1980orpriortorestartingfromanyunplannedoutage,whicheverisfirst.}}
[OO~]14CON'T~0I~03Q.2526LCE.NSE,Y) sJOOl9LICENSEECQQE14'5LICSh$4NVM4KR57~T"'Ell-LEoI''a~4041QQCKETNUMSER44EVENTOKSCRIPTION ANOSRQBABLKCONSKOUEiNC'KS QIODurinnormaloerationsCEA30reedQ~<'QEVENTCATE14ISASSORTQAE40switchositionindicationchannelfailed.ThechannelwasdeclaredINOPERABLE.
Inaccordance withTS3ILIIIElllI-00III-1041111111Q~Qwwithdrawn iinonceer12hoursatthisposition.
Thechannelwasrepairedandreturnedtoservice.Thischannelfailedaain8dasafterreturnintoservice.~07~08ThesameactionerTS3.1~3.3wasaainerformedbutthechannelhasnobeenreairedet.Thisisthefirsteventofthiste.40~OB5Y5TK4ICAUSECAU5ECQMS.VALVECQQECQQE5VSCQQECCMSONENT CQQESVSQQESUECQOS~BS~ESLee~IN404NQLoeLee79101112ll191929SKQVENTIAL OCCURRENCE
~REPORTREVISION~LERIROEVENTYEAARESORTNO.CQQETYPE~NQ.QEENoa<<~0~~003~m~03~L~~0'll22'll242621252920llllACTIQIISUTUREEFFECTSsaVTQQWN ATTACHMENT NSRQ44PRIMECQMS.CQMSONKNT TAKENACTIONCNPLANTMETHQQNQLNAS225USMITTEQ FOAMSUb.SVPSIJKRMANUFACTURER LNNSLaSLIJSUZS00NlLUQLNLSXIIIQ~4043$36~4041424441CAUSEOESCRIPTION ANOCORRECTIVE ACTIONSQ270Thecauseofthesechannelfailes'stiallreairedbrelacinashortedthiswasthesecondsarecablethatwastriedthechannelremainedfailedwhenthefirstsarecablewasinstalled
.Thechannelfailurecauseandreairwillbeinvestiateddurinthe1980refueling outage.4aa(~laN'NA749I'I12LC$5QFCRQAMOE0FACILITYQ43TYIEEOESCRIPTIQN EZlZJO269'0rVSLIC:TY QESCAIPT:QN
~0~NIP)9'0'AM.A.Schoppman 99FACILITY~~30METIIOQOFSTiATUS'4POWEROTIIEASTATUSP/OISCQVERV eonILISLEENJJ!IS~.
L~ES9910'll1244ACllVITYCONTENTRELKASEQOFRELEASEAMQUN'TOP ACTIVITYQSSB~ZQ32~ZQ3NAl99104446IEEASQNNEL EXIIOSVAKS
~IE~000Q>>~ZQEENA791112ll~ERSQNNELINIURIESEKl~~0QAOOISCOVEAV QESCAISTIQN Q20craterObservation NALOCATIONOSRELEASEQSB50NRCUSEONLY646940PH0NE:305552-3802800$BEO 4
Reportabl eOccurrence 335-SO-3LicenseeEventReportPaeTwoAdditional EventDescription andProbableConseuencesDuringnormal100Kpoweroperation, CEA830reedswitchpositionindication channelfailed.ThechannelwasdeclaredINOPERABLE.
Inaccordance withTechnical Specification 3.1.3.3,CEA830waswithdrawn totheUpperElectricLimitposition("FullOut"),CEA430wasverifiedatleastonceper12hoursatthispositionaspoweroperation continued.
Elevendayslater,following anunrelated planttrip,investigation ofthecauseforthechannelfailureseemedto.ndicateashortedpowercableinthevicinityofthereactorvesselhead.Thiscablewasreplacedwithasparecable,butthefailedchannelremainedINOPERABLE.
Asecondsparecablewasinstalled andthychannelbecameoperable.
Thechannelwassuccessfully testedforsatis'factory operation anddeclaredOPERABLE.
Theplantwasstartedupandreturnedto100&#xc3;poweroperation.
Eightdaysafterreturning thischanneltoOPERABLEstatus,itfailedagain.Thesameappropriate actionsstatedabovewereperformed again.CEA430reedswitchpositionindication channelispresently INOPERABLE.
CEA830isinregulating CEAgroupnumber1whichisnotusedforpowershaping.Also,itisthelastregulating grouptomoveduringinsertion.
Therefore, CEA$30canbemaintained fullyoutattheUpperElectricLimitwithoutanyeffectonoperations orgroupalignment.
AllCEA'sweretrippable duringtheevent.Thisproblemwillbeinvestigated andresolvedduringtherefueling outagescheduled Harch15,1980orpriortorestarting fromanyunplanned outage,whichever isfirst.}}

Revision as of 12:28, 29 June 2018

LER 80-003/03L-0:on 800106,during Normal Operations,Control Element Assembly 30 Reed Switch Indication Channel Failed, Eight Days After Repair for Same Problem.Cause Unknown;Will Be Investigated During Refueling Outage
ML17266A141
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 02/05/1980
From: SCHOPPMAN M A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A831 List:
References
LER-80-003-03L, LER-80-3-3L, NUDOCS 8002210378
Download: ML17266A141 (3)
v • d • e


Text

NRCFORM366g77)LICENSEEEVENTREPORTU.S.NUCLEARRKCULATORY COMMISSION CONTROLBLOCK:IIQl(PLEASEPAINTORTYPL'LLRKOUIAEOINFORMATION)

[OO~]14CON'T~0I~03Q.2526LCE.NSE,Y) sJOOl9LICENSEECQQE14'5LICSh$4NVM4KR57~T"'Ell-LEoIa~4041QQCKETNUMSER44EVENTOKSCRIPTION ANOSRQBABLKCONSKOUEiNC'KS QIODurinnormaloerationsCEA30reedQ~<'QEVENTCATE14ISASSORTQAE40switchositionindicationchannelfailed.ThechannelwasdeclaredINOPERABLE.

Inaccordance withTS3ILIIIElllI-00III-1041111111Q~Qwwithdrawn iinonceer12hoursatthisposition.

Thechannelwasrepairedandreturnedtoservice.Thischannelfailedaain8dasafterreturnintoservice.~07~08ThesameactionerTS3.1~3.3wasaainerformedbutthechannelhasnobeenreairedet.Thisisthefirsteventofthiste.40~OB5Y5TK4ICAUSECAU5ECQMS.VALVECQQECQQE5VSCQQECCMSONENT CQQESVSQQESUECQOS~BS~ESLee~IN404NQLoeLee79101112ll191929SKQVENTIAL OCCURRENCE

~REPORTREVISION~LERIROEVENTYEAARESORTNO.CQQETYPE~NQ.QEENoa<<~0~~003~m~03~L~~0'll22'll242621252920llllACTIQIISUTUREEFFECTSsaVTQQWN ATTACHMENT NSRQ44PRIMECQMS.CQMSONKNT TAKENACTIONCNPLANTMETHQQNQLNAS225USMITTEQ FOAMSUb.SVPSIJKRMANUFACTURER LNNSLaSLIJSUZS00NlLUQLNLSXIIIQ~4043$36~4041424441CAUSEOESCRIPTION ANOCORRECTIVE ACTIONSQ270Thecauseofthesechannelfailes'stiallreairedbrelacinashortedthiswasthesecondsarecablethatwastriedthechannelremainedfailedwhenthefirstsarecablewasinstalled

.Thechannelfailurecauseandreairwillbeinvestiateddurinthe1980refueling outage.4aa(~laN'NA749I'I12LC$5QFCRQAMOE0FACILITYQ43TYIEEOESCRIPTIQN EZlZJO269'0rVSLIC:TY QESCAIPT:QN

~0~NIP)9'0'AM.A.Schoppman 99FACILITY~~30METIIOQOFSTiATUS'4POWEROTIIEASTATUSP/OISCQVERV eonILISLEENJJ!IS~.

L~ES9910'll1244ACllVITYCONTENTRELKASEQOFRELEASEAMQUN'TOP ACTIVITYQSSB~ZQ32~ZQ3NAl99104446IEEASQNNEL EXIIOSVAKS

~IE~000Q>>~ZQEENA791112ll~ERSQNNELINIURIESEKl~~0QAOOISCOVEAV QESCAISTIQN Q20craterObservation NALOCATIONOSRELEASEQSB50NRCUSEONLY646940PH0NE:305552-3802800$BEO 4

Reportabl eOccurrence 335-SO-3LicenseeEventReportPaeTwoAdditional EventDescription andProbableConseuencesDuringnormal100Kpoweroperation, CEA830reedswitchpositionindication channelfailed.ThechannelwasdeclaredINOPERABLE.

Inaccordance withTechnical Specification 3.1.3.3,CEA830waswithdrawn totheUpperElectricLimitposition("FullOut"),CEA430wasverifiedatleastonceper12hoursatthispositionaspoweroperation continued.

Elevendayslater,following anunrelated planttrip,investigation ofthecauseforthechannelfailureseemedto.ndicateashortedpowercableinthevicinityofthereactorvesselhead.Thiscablewasreplacedwithasparecable,butthefailedchannelremainedINOPERABLE.

Asecondsparecablewasinstalled andthychannelbecameoperable.

Thechannelwassuccessfully testedforsatis'factory operation anddeclaredOPERABLE.

Theplantwasstartedupandreturnedto100Ãpoweroperation.

Eightdaysafterreturning thischanneltoOPERABLEstatus,itfailedagain.Thesameappropriate actionsstatedabovewereperformed again.CEA430reedswitchpositionindication channelispresently INOPERABLE.

CEA830isinregulating CEAgroupnumber1whichisnotusedforpowershaping.Also,itisthelastregulating grouptomoveduringinsertion.

Therefore, CEA$30canbemaintained fullyoutattheUpperElectricLimitwithoutanyeffectonoperations orgroupalignment.

AllCEA'sweretrippable duringtheevent.Thisproblemwillbeinvestigated andresolvedduringtherefueling outagescheduled Harch15,1980orpriortorestarting fromanyunplanned outage,whichever isfirst.

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