ML17266A095

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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)


Text

NRCSORM144PTrlLtCENSEiEVcNTAEI"ORTU*NUCLEARRECVLATORY COMMISSION

'QI4IQII'IIQI>>QIliIQ~49LICa~SSSCOOKI~LICK!aSK>YVMS tilL>Caa>SKTYFS20$7~aCON'T"""MSI'QLLaia-'Q'I0CAFTNUMSKR,sjS>F~KYEHTOATSI~7$ASSORTOATs'0ADVENTOESCRItTION ANOSRObASI,E CONSECUENCES OoWhileperforming the.CEAPeriodxcExerciseSurveillance Test,CEA865dropped.ACTiONperT.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

.QATTACHMKHT aM>RO>4SAIMKCOMA.COMSOHKNTTAAKNAa,TIONCNFLAN'Y~MKTIaoo-~-IIOUAS11SUSMITTKO SOAMRUS.~SVSSLIKAMANUS*CTUA!A LIRL>sLasLasLasLJSIIsIJiils041$JK~404I-44~~~CAUSEOESCRItTION ANOCORAECaIVEACTIONSQ27Thecauseappearstobeduetoadesigndeficiency withtheControlElement,"DriveSystem.'Arecentinformation.

bulletinfromtheCEDSvendordetails.actiontobefollowedduringfuturesurveillance testing.A'Procedure

'hangeRequesthasbeensubmitted tofollowthissequence.

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'NUMSKATYSKOKSCAISTION Q<<9rr~000IQa>~LQ>.NA19~II1ISSSASOHHKL UVUAa!5~ia~ooQa149III1~LCSSOSC4I OA>>ACKTOSACIUTVQASTYSKOKM>>TIOH~zQ41~NA~.?.44l0tUSUC!TYISSUKO~OKSCAltr:OH 9GIBLOUlo.~OISCOV!AV OKSCAISTIOH QS1OperatorObservation

.40LOCATIONotAKLKASKQSb40.4040~NRCUSEONLY44Sj!0(305)552-3802N~Eo>>REtAREM.

A.Schoppman apossiblesolutionduringtestingandrecommends asequenceofoperator~909260B6'f