ML17266A259: Difference between revisions

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=Text=
=Text=
{{#Wiki_filter:~~'rit)RCPOAhtSCOIT.TTIStSNUCLEARAKCLILATCAY CMAMISSIOtt LICEPIScE EVFNTREPORT,~..~'ONTROLBLOC)tItItIIQtIPLEASSPRItsr.OATYPSALLAeSCVlilSD ItIPO)lh'eeT)Ottl iCZ3C..O.f0IJCttssffCOOfLICSeVS4eVUIIIOSR 556'iCSVSfevtfJOSi4AI)6ssCOeI'HZ"""'LGei""'-'s~-'(s''i0$$0COCXSTt)uhISfII51SVCHTeeATS
{{#Wiki_filter:~~'ri t)RC POAht SCO IT.TT I St S NUCLEAR AKCLILATCAY CMAMISSIOtt LICEPIScE EVFNT REPORT,~..~'ONTROL BLOC)tI t I t I I Qt IPLEASS PR Its r.OA TYPS ALL AeSCVlilSD ItIPO)lh'eeT)Ottl i CZ3 C..O.f 0 IJCttssf f COOf LICSeVS4 eVUIIIOSR 55 6'iCSVSf evtf JO Si 4AI)6 ss COe I'HZ"""'L Ge i""'-'s~-'(s''i 0$$0 COCXST t)uhIS f II 51 SVCHTeeATS
)6)5i)ftorITO*Tf
)6)5 i)ftorITO*Tf
'0ma~rOaSCA)PTSON
'0 ma~r OaSCA)PTSON
~OPAOS~SLSCOt4S-CuauC~
~O PAOS~SLS COt4S-CuauC~
QIO02OurinfulloweroerationCEA23dropedtofullinsertion
QIO 0 2 Ourin full ower o eration CEA 23 drop ed to full insertion..Action per'.CZ3 Tt)3.1;3.le was initiated.
..Actionper'.CZ3Tt)3.1;3.lewasinitiated.
Rx power was reduced to 70%, CEA 23 was~OS I<<p>><<d.tested and realigned with its group.power was increased to 100K.I 80-32,-80-34, 80-35.~, 5im ilar occur.ences were reported in LER's 335-80-23, 80-10, 80-'7, 80-2.,'ot-I~ere i I 3D SYSTS Y C~USf auSt CC!est, VALVS CDCf CCCf 5USCDOf CCMrthv f)IT CD 0 f SUSCDCS'Iif Coo f ie-0 I IS LJS~i'"'0 9JSe Birr)6 I e)I I.~IS IS IJ IQ SD Sf Cuf tITI*I OCCJAA NCK Afeso IT IIS VISIOIt SVSVT r t*A~'SPOAT NO.CCCf TYtf)IO.Qr~iis ir~'!0~~03 6 f~m~03~L~.'[+0 SI je 54 SS Jt'S ee0 SI SS f prfcr 5!suToovsil AS, tcxsr f v T vPROJ tRI:cf Catt.COSIPC4f H T TtKtiV he TIC.'I CV tLh'sT SISTvOO NOVAS S2 Suth!I~~SO fCASI 3uf, SuttLIKR Ueht!Uf Are TVAS QAIQrs[ZIQ I3 IQs QKQtr L~GI III 0'QHQrr[+II Qse I HIQs~>3~Is II.': 4l CJ l)reI 41 O'USsJ OKS RIP Ou ANO COAASCt)V8 ACTIONSCEA 23dropped.
Rxpowerwasreducedto70%,CEA23was~OSI<<p>><<d.testedandrealigned withitsgroup.powerwasincreased to100K.I80-32,-80-34,80-35.~,5imilaroccur.enceswerereportedinLER's335-80-23, 80-10,80-'7,80-2.,'ot-I~ereiI3DSYSTSYC~USfauStCC!est,VALVSCDCfCCCf5USCDOfCCMrthvf)ITCD0fSUSCDCS'IifCoofie-0IISLJS~i'"'09JSeBirr)6Ie)II.~ISISIJIQSDSfCuftITI*IOCCJAANCKAfesoITIISVISIOItSVSVTrt*A~'SPOATNO.CCCfTYtf)IO.Qr~iisir~'!0~~036f~m~03~L~.'[+0SIje54SSJt'See0SISSfprfcr5!suToovsil AS,tcxsrfvTvPROJtRI:cfCatt.COSIPC4fHTTtKtiVheTIC.'ICVtLh'sTSISTvOONOVASS2Suth!I~~SOfCASI3uf,SuttLIKRUeht!UfAreTVASQAIQrs[ZIQI3IQsQKQtrL~GIIII0'QHQrr[+IIQseIHIQs~>3~IsII.':4lCJl)reI41O'USsJOKSRIPOuANOCOAASCt)V8 ACTIONSCEA23dropped.
due to a failure in its core power programmer 15v power supply.The power supply was replaced.A modification is underway to prov>ide redundant 15v power supplies to each CEA.~II')s, s~S hrfTIIOO<<P OT)i'T@eVS~CISCOVS A V 3 AC I LI~Y 5~>I'i II Ir''.IMtR~AQI~OP ERATOR e'r 44 4$k~le/ITT CDerTSVT'ISLtksfo Ct PS''si'UOUNTOP ACTIVITY QSO~)if I Z I QSS I Zlt6 NA)4 i~:0 Is wS ts>SOAAS'Xroe J!rte Vusrsst?~'r SSCPIPTICVpi
duetoafailureinitscorepowerprogrammer 15vpowersupply.Thepowersupplywasreplaced.
~ii:r.j GI 0 I 0!,: I!~!Igs CISCCV SAY Of SCA!PTICV g OBSFRVATXOH LoaT!ovof ASLf~f Q>S to t!ASCIIASL IV Prt~rI;!~n!I 0!~:l 1 II 55 OP C I OLerzvt 5 CILerev CSS>etTIJv tgzQ")si NA'l;IU: S)P.L.Pace~Ih..f 0 00cf jPSA tIRC'Ss: CNI.Y fa 60 50 ONs)(~'S 2 3801}}
Amodification isunderwaytoprov>ideredundant 15vpowersuppliestoeachCEA.~II')s,s~ShrfTIIOO<<P OT)i'T@eVS~CISCOVSAV3ACILI~Y5~>I'iIIIr''.IMtR~AQI~OPERATORe'r444$k~le/ITTCDerTSVT'ISLtksfo CtPS''si'UOUNTOPACTIVITYQSO~)ifIZIQSSIZlt6NA)4i~:0IswSts>SOAAS'Xroe J!rteVusrsst?~'rSSCPIPTICVpi
~ii:r.jGI0I0!,:I!~!IgsCISCCVSAYOfSCA!PTICV gOBSFRVATXOH LoaT!ovof ASLf~fQ>Stot!ASCIIASL IVPrt~rI;!~n!I0!~:l1II55OPCIOLerzvt5CILerevCSS>etTIJvtgzQ")siNA'l;IU:S)P.L.Pace~Ih..f000cfjPSAtIRC'Ss:CNI.Yfa6050ONs)(~'S23801}}

Revision as of 13:25, 7 July 2018

LER 80-036/03L-0:on 800805,during Full Power Operation, Control Element Assembly 23 Dropped to Full Insertion.Caused by Failure in Core Element Assembly Core Power Programmer 15-volt Power Supply.Power Supply Replaced
ML17266A259
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 09/03/1980
From: PACE P L
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17208A984 List:
References
LER-80-036-03L, LER-80-36-3L, NUDOCS 8009150290
Download: ML17266A259 (1)
v • d • e


Text

~~'ri t)RC POAht SCO IT.TT I St S NUCLEAR AKCLILATCAY CMAMISSIOtt LICEPIScE EVFNT REPORT,~..~'ONTROL BLOC)tI t I t I I Qt IPLEASS PR Its r.OA TYPS ALL AeSCVlilSD ItIPO)lh'eeT)Ottl i CZ3 C..O.f 0 IJCttssf f COOf LICSeVS4 eVUIIIOSR 55 6'iCSVSf evtf JO Si 4AI)6 ss COe I'HZ"""'L Ge i""'-'s~-'(si 0$$0 COCXST t)uhIS f II 51 SVCHTeeATS

)6)5 i)ftorITO*Tf

'0 ma~r OaSCA)PTSON

~O PAOS~SLS COt4S-CuauC~

QIO 0 2 Ourin full ower o eration CEA 23 drop ed to full insertion..Action per'.CZ3 Tt)3.1;3.le was initiated.

Rx power was reduced to 70%, CEA 23 was~OS I<

><<d.tested and realigned with its group.power was increased to 100K.I 80-32,-80-34, 80-35.~, 5im ilar occur.ences were reported in LER's 335-80-23, 80-10, 80-'7, 80-2.,'ot-I~ere i I 3D SYSTS Y C~USf auSt CC!est, VALVS CDCf CCCf 5USCDOf CCMrthv f)IT CD 0 f SUSCDCS'Iif Coo f ie-0 I IS LJS~i'"'0 9JSe Birr)6 I e)I I.~IS IS IJ IQ SD Sf Cuf tITI*I OCCJAA NCK Afeso IT IIS VISIOIt SVSVT r t*A~'SPOAT NO.CCCf TYtf)IO.Qr~iis ir~'!0~~03 6 f~m~03~L~.'[+0 SI je 54 SS Jt'S ee0 SI SS f prfcr 5!suToovsil AS, tcxsr f v T vPROJ tRI:cf Catt.COSIPC4f H T TtKtiV he TIC.'I CV tLh'sT SISTvOO NOVAS S2 Suth!I~~SO fCASI 3uf, SuttLIKR Ueht!Uf Are TVAS QAIQrs[ZIQ I3 IQs QKQtr L~GI III 0'QHQrr[+II Qse I HIQs~>3~Is II.': 4l CJ l)reI 41 O'USsJ OKS RIP Ou ANO COAASCt)V8 ACTIONSCEA 23dropped. due to a failure in its core power programmer 15v power supply.The power supply was replaced.A modification is underway to prov>ide redundant 15v power supplies to each CEA.~II')s, s~S hrfTIIOO<

I'i II Ir.IMtR~AQI~OP ERATOR e'r 44 4$k~le/ITT CDerTSVT'ISLtksfo Ct PSsi'UOUNTOP ACTIVITY QSO~)if I Z I QSS I Zlt6 NA)4 i~:0 Is wS ts>SOAAS'Xroe J!rte Vusrsst?~'r SSCPIPTICVpi ~ii:r.j GI 0 I 0!,: I!~!Igs CISCCV SAY Of SCA!PTICV g OBSFRVATXOH LoaT!ovof ASLf~f Q>S to t!ASCIIASL IV Prt~rI;!~n!I 0!~:l 1 II 55 OP C I OLerzvt 5 CILerev CSS>etTIJv tgzQ")si NA'l;IU: S)P.L.Pace~Ih..f 0 00cf jPSA tIRC'Ss: CNI.Y fa 60 50 ONs)(~'S 2 3801

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