ML19208D494

LER 79-078/03L-0:on 790831,while Removing Rwcv,Suction Inboard Value F001 Failed in mid-position.Caused by Torque Limit Switch Opening & Causing Motor to Stop.Valve Tested & Problem Did Not Recur.No Further Action Necessary

ML19208D494
Person / Time
Site:	Brunswick
Issue date:	09/25/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208D490	List: ML19208D489 ML19208D494
References
LER-79-078-03L, LER-79-78-3L, NUDOCS 7909280492
Download: ML19208D494 (1)

Text

NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION (7 7M -

LICENSEE EVENT REPORT (PLE ASE PRINT OR TYPE AL" REQUIRED INF RMA CONTnOtBtOCx:

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8 EVENT DATE 14 75 REPORT DATE 1 00 61 DOCK ET NtNB E R EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 l While removing RWCV a " leak 11i 111" alarm was received whf ch isolatec the RWCV system. ]

o 3 l The operator noticed that the suction outboard valve shut as required but the suction l o 4 Jinboard valve F001 failed in the mid-position. I O 5 l Technical Specification 3.6.3, 6.9.1.9b _

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80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SU8 CODE COYPCNENT CODE SUSCODE SUBCODE o oJ Ic 9

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32 ACTION FUTURE EFFECT SHUTDOWN ATT ACHME NT NPHD 4 PHIVECOYp. COV PO*.E N T TAKEN ACTION ON PL ANT METHOD HOURS SUBYl TT E D FOHM SUB. SUPPLIEH MANUFACTURER 33Xl@J4 Z@ l35 Zl@ ]@

36 l0l0l0l 3/ 40 l l NlQ 41 j Nlg 42 43 A l@ L l2 44 0 l 0lg 47 CAUSE DESCRIPTIO*1 AND CORRECTIVE ACTIONS h

!1 o lAn investigation revealed that the torque limit switch had opened, causing the motor l li li l to stop. The valve was manually shut then cycled four times electrically and the 1 l i l ;, l [ problem could not be made to recur. This is considered an isolated event and no

, 3 l further action is required. l t i 141 l I 8 9 80 STA S  % POWE H OTHER ST ATUS ISL VE DISCOVEHY DESCFUPTION

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PENJNNE L Injure ES N L'Y B E R CESCH.PTION i 8 8 9 l0l0[0l@l 11 12 NA l LOSS OF OH DAY AGE TO F ACILITY '

TYPE DE SCFllP T ION 79()9280 i 9 l l Z l@l NA 0 H 9 10 PUB L ICI T Y ~' ) N h C US E ON L Y ISSUE D DESCRIPTION j j i 121"I bij6l " 1 II 1llllll LJ j 1 8 9 10 CH 69 80 g N Avr OF PUF PArtF ,, A. C. To111 son, Jr. pg g,y .

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