ML17266A407: Difference between revisions

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{{#Wiki_filter:NRCFOAM28$l7773.LlCENSEE, EVcNTREPORTUASNUCLKARAKOULATORV COMMISSION
{{#Wiki_filter:NRC FOAM 28$l7 773.LlCENSEE, EVcNT REPORT UA S NUCLKAR AKOULATORV 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.
'-i 1 3 CCN'T~o 1 0'Q IPLKASK PRINT OA TYPK ALL AKOUIRSO INFORMAITIONI I 8 LI 5 II'Q 01-I I-Q~lt I ll QLJJQ uCSNSC8 COO8 UCSN88 NUM88R 35'8 uCSNS8 TYPS 40.Sr~T Ia",;'IL2Q 5 0 00 5@~12 I Q~22 151 Q 40 O'I CQCXST NVMSSR 43~89 SVSNT QATC'4 15 RSPQRT OATS 30 PIKNT OKSCAIPTION ANO PROSAKLK CONSCCUKNCKS Qlo Durin return of B'f i w ,~03 facil it a differential current.The B offsite source was placed,out of service and.Diesel Generator (DG)'testing continued per TS 3.8.1.1 until offsite*power.was returned to service.The health and safety of.the.public was not affected.DG.,'s were operable, and the other source of offsite power was 5 available at, all times.This is first.event of this.t e.~og current rel'ay was suspected.
DG.,'swereoperable, andtheothersourceofoffsitepowerwas5available at,alltimes.Thisisfirst.eventofthis.te.~ogcurrentrel'aywassuspected.
Trouble shooting was conducted but no problems were found.Following testing, OCB 4E was successfull closed.No unusual conditions were noted.The B offsite ower source was returnedI SYSTSU CAU58 CAUsi COMP: VAI.VS CQO8 CQQ8.SVSCCO8 CQMPQNSNTCQQK lVSCQQS SUSC 08 LE22Q LAIQ rrlQ~Q L'IQ I22Q 1 8'10 I I Il 13 I9 SSOVSNTIAL QCCURFKNCK IISPCA RKVISIQN LSRIRO*VSNTYSAR IISPQRTNQ.
Troubleshootingwasconducted butnoproblemswerefound.Following testing,OCB4Ewassuccessfull closed.Nounusualconditions werenoted.TheBoffsiteowersourcewasreturnedI SYSTSUCAU58CAUsiCOMP:VAI.VSCQO8CQQ8.SVSCCO8CQMPQNSNTCQQK lVSCQQSSUSC08LE22QLAIQrrlQ~QL'IQI22Q18'10IIIl13I9SSOVSNTIAL QCCURFKNCK IISPCARKVISIQNLSRIRO*VSNTYSAR IISPQRTNQ.
CQQ8 TYPS'IQ.Q2 2 II~2!!A 2~8-]~~00 4~W~03~L~~0 ll 32 24 38 1 8 19 32 ACTION, PVTUA8-SPPSC..SHVTQQVINI A TACHMSNT 4PRQ~PRIMKCQMP:
CQQ8TYPS'IQ.Q22II~2!!A2~8-]~~004~W~03~L~~0ll322438181932ACTION,PVTUA8-SPPSC..SHVTQQVINI ATACHMSNT4PRQ~PRIMKCQMP:
~CQM+CNSNT TAiISN2 ACTION CNPLANI'STHQQ HOURS Q22'U845ITT80
~CQM+CNSNT TAiISN2ACTIONCNPLANI'STHQQ HOURSQ22'U845ITT80
>OII545V8.
>OII545V8.
Rl>PLIRUA4UPACTURSA IrlQRJQLJrQ2LLIQ~LSQI<IQLAJQLtlt12AQ343521404I4241C*USKCONSCRIPTION
Rl>PLI R UA4UPACTURSA IrlQRJQ LJrQ2L LIQ~LSQ I<IQ LAJQ Ltlt12 AQ 34 35 21 40 4I 42 41 C*USK CONSCRIPTION
*540CORAKCiIVACTIONSQ27Thecauseofthe.eventwasnotdetermined, however,thedifferential QISCQVSRY QSSCRIPTIQN 2LQCATICNQCRSLSAS8Q~SNA1I9III2'LCSSOACRQAMA08~QPAC'LITYQASTYPSQSSCRIPTIQN gZ[Q42~&#x17d;133174LaLIC.~0SSCRIPT;CN Ql~zle3J''.0toservice41hoursafterbeingde-energized.
*540 CORAKCi IV ACTIONS Q27 The cause of the.event was not determined, however, the differential QISCQVSRY QSSCRIPTIQN 2 LQCATICN QC RSLSAS8 Q~S NA 1 I 9 I I I 2'LCSS OA CR QAMA08~Q PAC'LITY QAS TYPS QSSCRIPTIQN g Z[Q42~&#x17d;1 3 3 17 4LaLIC.~0SSCRIPT;CN Q l~zle 3 J''.0 to service 41 hours after being de-energized.
189FACILITYV8THCOQI35ATUSSP22WSROTHeRSTATUS.~1QISCQVSRY IQQLJQL'IUJIIQ~
1 8 9 FACILITY V 8TH CO QI 35 ATUS S P22WSR OTHeR STATUS.~1 QISCQVSRY IQQ LJQL'IUJIIQ~
22IQ18IO'2IS4445ACTIVITYCONTKITRSLEASSQCPASLM~$8AMQVNTQFACTIVITYQSS8~ZQ22~ZQ24NA110454SASQIiNSL SIIPCSVASS112PSIISQNNSI iNJVIIISS
22IQ 1 8 IO'2 IS 44 45 ACTIVITY CON TKIT RSLEASSQ CP ASLM~$8 AMQVNTQF ACTIVITY QSS 8~Z Q22~ZQ24 NA 1 10 45 4SASQIiNSL SIIPCSVA SS 1 12 PSIISQNNSI iNJVIIISS~ia~00 10 Qua NA 30 P.L.Pace NRC USK ONLY 704CNK.(305)552-380 1 30 30
~ia~0010QuaNA30P.L.PaceNRCUSKONLY704CNK.(305)552-38013030
<8 398'f 3'9/*W~}}
<8398'f3'9/*W~}}

Revision as of 13:20, 7 July 2018

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)
v • d • e


Text

NRC FOAM 28$l7 773.LlCENSEE, EVcNT REPORT UA S NUCLKAR AKOULATORV COMMISSION

'-i 1 3 CCN'T~o 1 0'Q IPLKASK PRINT OA TYPK ALL AKOUIRSO INFORMAITIONI I 8 LI 5 II'Q 01-I I-Q~lt I ll QLJJQ uCSNSC8 COO8 UCSN88 NUM88R 35'8 uCSNS8 TYPS 40.Sr~T Ia",;'IL2Q 5 0 00 5@~12 I Q~22 151 Q 40 O'I CQCXST NVMSSR 43~89 SVSNT QATC'4 15 RSPQRT OATS 30 PIKNT OKSCAIPTION ANO PROSAKLK CONSCCUKNCKS Qlo Durin return of B'f i w ,~03 facil it a differential current.The B offsite source was placed,out of service and.Diesel Generator (DG)'testing continued per TS 3.8.1.1 until offsite*power.was returned to service.The health and safety of.the.public was not affected.DG.,'s were operable, and the other source of offsite power was 5 available at, all times.This is first.event of this.t e.~og current rel'ay was suspected.

Trouble shooting was conducted but no problems were found.Following testing, OCB 4E was successfull closed.No unusual conditions were noted.The B offsite ower source was returnedI SYSTSU CAU58 CAUsi COMP: VAI.VS CQO8 CQQ8.SVSCCO8 CQMPQNSNTCQQK lVSCQQS SUSC 08 LE22Q LAIQ rrlQ~Q L'IQ I22Q 1 8'10 I I Il 13 I9 SSOVSNTIAL QCCURFKNCK IISPCA RKVISIQN LSRIRO*VSNTYSAR IISPQRTNQ.

CQQ8 TYPS'IQ.Q2 2 II~2!!A 2~8-]~~00 4~W~03~L~~0 ll 32 24 38 1 8 19 32 ACTION, PVTUA8-SPPSC..SHVTQQVINI A TACHMSNT 4PRQ~PRIMKCQMP:

~CQM+CNSNT TAiISN2 ACTION CNPLANI'STHQQ HOURS Q22'U845ITT80

>OII545V8.

Rl>PLI R UA4UPACTURSA IrlQRJQ LJrQ2L LIQ~LSQ I<IQ LAJQ Ltlt12 AQ 34 35 21 40 4I 42 41 C*USK CONSCRIPTION

  • 540 CORAKCi IV ACTIONS Q27 The cause of the.event was not determined, however, the differential QISCQVSRY QSSCRIPTIQN 2 LQCATICN QC RSLSAS8 Q~S NA 1 I 9 I I I 2'LCSS OA CR QAMA08~Q PAC'LITY QAS TYPS QSSCRIPTIQN g Z[Q42~Ž1 3 3 17 4LaLIC.~0SSCRIPT;CN Q l~zle 3 J.0 to service 41 hours4.74537e-4 days <br />0.0114 hours <br />6.779101e-5 weeks <br />1.56005e-5 months <br /> after being de-energized.

1 8 9 FACILITY V 8TH CO QI 35 ATUS S P22WSR OTHeR STATUS.~1 QISCQVSRY IQQ LJQL'IUJIIQ~

22IQ 1 8 IO'2 IS 44 45 ACTIVITY CON TKIT RSLEASSQ CP ASLM~$8 AMQVNTQF ACTIVITY QSS 8~Z Q22~ZQ24 NA 1 10 45 4SASQIiNSL SIIPCSVA SS 1 12 PSIISQNNSI iNJVIIISS~ia~00 10 Qua NA 30 P.L.Pace NRC USK ONLY 704CNK.(305)552-380 1 30 30

<8 398'f 3'9/*W~

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