ML17266A095: Difference between revisions

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{{#Wiki_filter:NRCSORM144PTrlLtCENSEiEVcNTAEI"ORTU*NUCLEARRECVLATORY COMMISSION
{{#Wiki_filter:NRC SORM 144 P Trl LtCENSEi EVcNT AEI"ORT U*NUCLEAR RECVLATORY COMMISSION
'QI4IQII'IIQI>>QIliIQ~49LICa~SSSCOOKI~LICK!aSK>YVMS tilL>Caa>SKTYFS20$7~aCON'T"""MSI'QLLaia-'Q'I'''0CAFTNUMSKR,sjS>F~KYEHTOATSI~7$ASSORTOATs'0ADVENTOESCRItTION ANOSRObASI,E CONSECUENCES OoWhileperforming the.CEAPeriodxcExerciseSurveillance Test,CEA865dropped.ACTiONperT.S.3.1.3.1.e.
'Q I 4 IQ I I'I I Q I>>QIliIQ~4 9 LICa~SSS COOK I~LICK!aSK>YVMS til L>Caa>SK TYFS 20$7~a CON'T"""MS I'QLLaia-'Q'I'''0 CAFT NUMSKR, sj S>F~KYEHT OATS I~7$ASSORT OATs'0 ADVENT OESCRItTION ANO SRObASI,E CONSECUENCES Oo While performing the.CEA Periodxc Exercise Surveillance Test, CEA 865 dropped.ACTiON per T.S.3.1.3.1.e.
wasinitiated andreactorpoawerwasreduced.CEA865wasretrieved, operationally checkedsatisfactorily andreturned'to normalstatusin45minutes.Reactorpowerwasreturnedto100Xwithin4.6hours.Thisisthesixthoccurrence ofadroppedCEA,duringCEAmovement, forwhichequipment malfunction wasnotthecause.(SeeLERs335-77-6, 78-20,78-46,-79-1and79-2;)50~09741.49SY5TKMCAU54CAU5!COMS.VALVKCOOKC<<<<K5VSCOOKCCMSONKNT<<004SVS00-SUSCOOKSI-'ShJSiLi4ISLIRL'JS9loII11l1sISIS20SKOUKHTIAL OccUAAKNCK AKFOATAKVISIONL!hlhoKVKNTYAAASSORT'lb.COO!TYIPKNo.Q>aa>aa>~79~~02I7~m~03~LLI~01l1111141$1719201IACTIONtUTUAKKFSKC5!aUTOOaSH
was initiated and reactor poawer was reduced.CEA 865 was retrieved, operationally checked satisfactorily and returned'to normal status in 45 minutes.Reactor power was returned to 100X within 4.6 hours.This is the sixth occurrence of a dropped CEA, during CEA movement, for which equipment malfunction was not the cause.(See LERs 335-77-6, 78-20, 78-46,-79-1 and 79-2;)50~09 7 4 1.4 9 SY5TKM CAU54 CAU5!COMS.VALVK COOK C<<<<K 5VSCOOK CCM SONKNT<<004 SVS 00-SUSCOOK S I-'S hJS iLi4IS LIR L'JS 9 lo II 11 l1 s IS IS 20 SKOUKHTIAL OccUAAKNCK AKFOAT AKVIS ION L!hlho KVKNT Y AA ASSORT'lb.COO!TYIPK No.Q>aa>aa>~79~~02 I 7~m~03~L L I~0 1l 11 11 14 1$17 19 20 1I ACTION tUTUAK KFSKC 5!aUTOOaSH
.QATTACHMKHT aM>RO>4SAIMKCOMA.COMSOHKNTTAAKNAa,TIONCNFLAN'Y~MKTIaoo-~-IIOUAS11SUSMITTKO SOAMRUS.~SVSSLIKAMANUS*CTUA!A LIRL>sLasLasLasLJSIIsIJiils041$JK~404I-44~~~CAUSEOESCRItTION ANOCORAECaIVEACTIONSQ27Thecauseappearstobeduetoadesigndeficiency withtheControlElement,"DriveSystem.'Arecentinformation.
.Q ATTACHMKHT aM>RO>4 SAIMK COMA.COMSOHKN T TAAKN Aa,TION CN FLAN'Y~MKTIaoo-~-IIOUAS 11 SUSMITTKO SOAMRUS.~SVSSLIKA MANUS*CTUA!A LIRL>s Las Las Las LJS I Is I J iils 04 1$JK~40 4 I-44~~~CAUSE OESCRItTION ANO CORAECa IVE ACTIONS Q27 The cause appears to be due to a design deficiency with the Control Element ," Drive System.'A recent information.
bulletinfromtheCEDSvendordetails.actiontobefollowedduringfuturesurveillance testing.A'Procedure
bulletin from the CEDS vendor details.action to be followed during future surveillance testing.A'Procedure
'hangeRequesthasbeensubmitted tofollowthissequence.
'hange Request has been submitted to follow this sequence.4 9 SACILI~V~"~50 MKTIIOO OS STATUS I FOYIK A OTIIKASr*TUS Qjo olscov!hv a QEQa~10 Qa NA QQI 1 O'9 Io 11 44 45 ACllVITY CONTENT h!LKA540 OS AKLKASK'MOUNT ot ACTIVITY QSS pgg~ZQss~QOA NA 5 4.9 IO 45 t!ASOHH4L KNFOSUAKS'NUMSKA TYSK OKSCAISTION Q<<9 r r~00 0 IQa>~LQ>.NA 1 9~I I1 IS SSASOHHKL UVUAa!5~ia~oo Qa 1 4 9 II I1~LCSSOSC4I OA>>ACK TO SACIUTV QAS TYSK OKM>>TIOH~zQ41~NA~.?.4 4''l0 tUSUC!TY ISSUKO~OKSCAltr:OH 9 GIB LOU lo.~OISCOV!AV OKSCAISTIOH QS1 Operator Observation
49SACILI~V~"~50MKTIIOOOSSTATUSIFOYIKAOTIIKASr*TUS Qjoolscov!hv aQEQa~10QaNAQQI1O'9Io114445ACllVITYCONTENTh!LKA540OSAKLKASK'MOUNTotACTIVITYQSSpgg~ZQss~QOANA54.9IO45t!ASOHH4L KNFOSUAKS
.40 LOCATION ot AKLKASK QSb 40.40 40~NRC USE ONLY 44 Sj!0 (305)552-3802 N~Eo>>REtAREM.
'NUMSKATYSKOKSCAISTION Q<<9rr~000IQa>~LQ>.NA19~II1ISSSASOHHKL UVUAa!5~ia~ooQa149III1~LCSSOSC4I OA>>ACKTOSACIUTVQASTYSKOKM>>TIOH~zQ41~NA~.?.44''l0tUSUC!TYISSUKO~OKSCAltr:OH 9GIBLOUlo.~OISCOV!AV OKSCAISTIOH QS1OperatorObservation
A.Schoppman a possible solution during testing and recommends a sequence of operator~90926 0 B6'f}}
.40LOCATIONotAKLKASKQSb40.4040~NRCUSEONLY44Sj!0(305)552-3802N~Eo>>REtAREM.
A.Schoppman apossiblesolutionduringtestingandrecommends asequenceofoperator~909260B6'f}}

Revision as of 13:29, 7 July 2018

LER 79-027/03L-0:on 790806,control Element Assembly 65 Dropped While Periodic Exercise Surveillance Test Was Being Performed.Caused by Apparent Design Deficiency W/Control Element Drive Sys.Procedure Change Request Submitted
ML17266A095
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 09/05/1979
From: SCHOPPMAN M A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A408 List:
References
LER-79-027-03L, LER-79-27-3L, NUDOCS 7909260304
Download: ML17266A095 (1)
v • d • e


Text

NRC SORM 144 P Trl LtCENSEi EVcNT AEI"ORT U*NUCLEAR RECVLATORY COMMISSION

'Q I 4 IQ I I'I I Q I>>QIliIQ~4 9 LICa~SSS COOK I~LICK!aSK>YVMS til L>Caa>SK TYFS 20$7~a CON'T"""MS I'QLLaia-'Q'I0 CAFT NUMSKR, sj S>F~KYEHT OATS I~7$ASSORT OATs'0 ADVENT OESCRItTION ANO SRObASI,E CONSECUENCES Oo While performing the.CEA Periodxc Exercise Surveillance Test, CEA 865 dropped.ACTiON per T.S.3.1.3.1.e.

was initiated and reactor poawer was reduced.CEA 865 was retrieved, operationally checked satisfactorily and returned'to normal status in 45 minutes.Reactor power was returned to 100X within 4.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.This is the sixth occurrence of a dropped CEA, during CEA movement, for which equipment malfunction was not the cause.(See LERs 335-77-6, 78-20, 78-46,-79-1 and 79-2;)50~09 7 4 1.4 9 SY5TKM CAU54 CAU5!COMS.VALVK COOK C<<<<K 5VSCOOK CCM SONKNT<<004 SVS 00-SUSCOOK S I-'S hJS iLi4IS LIR L'JS 9 lo II 11 l1 s IS IS 20 SKOUKHTIAL OccUAAKNCK AKFOAT AKVIS ION L!hlho KVKNT Y AA ASSORT'lb.COO!TYIPK No.Q>aa>aa>~79~~02 I 7~m~03~L L I~0 1l 11 11 14 1$17 19 20 1I ACTION tUTUAK KFSKC 5!aUTOOaSH

.Q ATTACHMKHT aM>RO>4 SAIMK COMA.COMSOHKN T TAAKN Aa,TION CN FLAN'Y~MKTIaoo-~-IIOUAS 11 SUSMITTKO SOAMRUS.~SVSSLIKA MANUS*CTUA!A LIRL>s Las Las Las LJS I Is I J iils 04 1$JK~40 4 I-44~~~CAUSE OESCRItTION ANO CORAECa IVE ACTIONS Q27 The cause appears to be due to a design deficiency with the Control Element ," Drive System.'A recent information.

bulletin from the CEDS vendor details.action to be followed during future surveillance testing.A'Procedure

'hange Request has been submitted to follow this sequence.4 9 SACILI~V~"~50 MKTIIOO OS STATUS I FOYIK A OTIIKASr*TUS Qjo olscov!hv a QEQa~10 Qa NA QQI 1 O'9 Io 11 44 45 ACllVITY CONTENT h!LKA540 OS AKLKASK'MOUNT ot ACTIVITY QSS pgg~ZQss~QOA NA 5 4.9 IO 45 t!ASOHH4L KNFOSUAKS'NUMSKA TYSK OKSCAISTION Q<<9 r r~00 0 IQa>~LQ>.NA 1 9~I I1 IS SSASOHHKL UVUAa!5~ia~oo Qa 1 4 9 II I1~LCSSOSC4I OA>>ACK TO SACIUTV QAS TYSK OKM>>TIOH~zQ41~NA~.?.4 4l0 tUSUC!TY ISSUKO~OKSCAltr:OH 9 GIB LOU lo.~OISCOV!AV OKSCAISTIOH QS1 Operator Observation

.40 LOCATION ot AKLKASK QSb 40.40 40~NRC USE ONLY 44 Sj!0 (305)552-3802 N~Eo>>REtAREM.

A.Schoppman a possible solution during testing and recommends a sequence of operator~90926 0 B6'f

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