ML17266A407

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LER 81-004/03L-0:on 810126,switch Yard Oil Circuit Breaker Ocb 4E Tripped on Differential Current.Probably Caused by Differential Current Relay.Breaker Closed
ML17266A407
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 02/25/1981
From: PACE P L
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17209A800 List:
References
LER-81-004-03L, LER-81-4-3L, NUDOCS 8103130366
Download: ML17266A407 (2)


Text

NRCFOAM28$l7773.LlCENSEE, EVcNTREPORTUASNUCLKARAKOULATORV COMMISSION

'-i13CCN'T~o10'QIPLKASKPRINTOATYPKALLAKOUIRSOINFORMAITIONI I8LI5II'Q01-II-Q~ltIllQLJJQuCSNSC8COO8UCSN88NUM88R35'8uCSNS8TYPS40.Sr~TIa",;'IL2Q 50005@~12IQ~22151Q40O'ICQCXSTNVMSSR43~89SVSNTQATC'415RSPQRTOATS30PIKNTOKSCAIPTION ANOPROSAKLKCONSCCUKNCKS QloDurinreturnofB'fiw,~03facilitadifferential current.TheBoffsitesourcewasplaced,out ofserviceand.DieselGenerator (DG)'testingcontinued perTS3.8.1.1untiloffsite*power.wasreturnedtoservice.Thehealthandsafetyof.the.publicwasnotaffected.

DG.,'swereoperable, andtheothersourceofoffsitepowerwas5available at,alltimes.Thisisfirst.eventofthis.te.~ogcurrentrel'aywassuspected.

Troubleshootingwasconducted butnoproblemswerefound.Following testing,OCB4Ewassuccessfull closed.Nounusualconditions werenoted.TheBoffsiteowersourcewasreturnedI SYSTSUCAU58CAUsiCOMP:VAI.VSCQO8CQQ8.SVSCCO8CQMPQNSNTCQQK lVSCQQSSUSC08LE22QLAIQrrlQ~QL'IQI22Q18'10IIIl13I9SSOVSNTIAL QCCURFKNCK IISPCARKVISIQNLSRIRO*VSNTYSAR IISPQRTNQ.

CQQ8TYPS'IQ.Q22II~2!!A2~8-]~~004~W~03~L~~0ll322438181932ACTION,PVTUA8-SPPSC..SHVTQQVINI ATACHMSNT4PRQ~PRIMKCQMP:

~CQM+CNSNT TAiISN2ACTIONCNPLANI'STHQQ HOURSQ22'U845ITT80

>OII545V8.

Rl>PLIRUA4UPACTURSA IrlQRJQLJrQ2LLIQ~LSQI<IQLAJQLtlt12AQ343521404I4241C*USKCONSCRIPTION

  • 540CORAKCiIVACTIONSQ27Thecauseofthe.eventwasnotdetermined, however,thedifferential QISCQVSRY QSSCRIPTIQN 2LQCATICNQCRSLSAS8Q~SNA1I9III2'LCSSOACRQAMA08~QPAC'LITYQASTYPSQSSCRIPTIQN gZ[Q42~Ž133174LaLIC.~0SSCRIPT;CN Ql~zle3J.0toservice41hoursafterbeingde-energized.

189FACILITYV8THCOQI35ATUSSP22WSROTHeRSTATUS.~1QISCQVSRY IQQLJQL'IUJIIQ~

22IQ18IO'2IS4445ACTIVITYCONTKITRSLEASSQCPASLM~$8AMQVNTQFACTIVITYQSS8~ZQ22~ZQ24NA110454SASQIiNSL SIIPCSVASS112PSIISQNNSI iNJVIIISS

~ia~0010QuaNA30P.L.PaceNRCUSKONLY704CNK.(305)552-38013030

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