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

'-I,llllJ@(PLE ASE PRINT OR TYPE AL" REQUIRED INF RMA CONTnOtBtOCx:

6 o o o-of o @l 4 1l il 1 11@ll@2 l@! ol ol -l o! o lN c nie r o i i 8 9 LICENSEE CODE 14 15 LICENSE NUMM't 25 26 LICENSE T YPE 30 S1 LAT58 CON'T 3 l1 1719 ]gl 0 9l 2l 5l 7l 9 l@

3[U] l L l@l 0 l 5 l 0- l0 3 l 2 l 4 @l 0

" 8 o 1 n 1 8 00 61 DOCK ET NtNB E R 68 63 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2l While removing RWCV a " leak 11i 111" alarm was received whf ch isolatec the RWCV system. ]

l The operator noticed that the suction outboard valve shut as required but the suction l o 3 Jinboard valve F001 failed in the mid-position.

I o 4 O 5l Technical Specification 3.6.3, 6.9.1.9b

_lO 6l0 7ll0 Hll80 7 8 9 SYSTEM CAUSE CAUSE COMP.VALVE CODE CODE SU8 CODE COYPCNENT CODE SUSCODE SUBCODE oJ Ic c l@ [ej@ In l@ l vi Al tl vi oi rl@ l A l@ W @

o t 8 9 10 11 12 13 18 19 20_SEQUENTI AL OCCUR RE NCE HEFGHT REVislON LER RO EVENT YE AR REPOR T NO.

CODE TYPE NO.@ REPl 7l 9l-ll 0l 7l 8l

]/][0l3llL l[-J W 7 ,_2f 22 23 24 du 21 28 2')30 31 32 COV PO*.E N T ACTION FUTURE EFFECT SHUTDOWN ATT ACHME NT NPHD 4 PHIVECOYp.

MANUFACTURER TAKEN ACTION ON PL ANT METHOD HOURS SUBYl TT E D FOHM SUB.SUPPLIEH Xl@J4 Z@l Zl@]@l0l0l0lll NlQ j Nlg A l@l 0lg L l2 0 35 36 3/40 41 42 43 44 47 33 CAUSE DESCRIPTIO*1 AND CORRECTIVE ACTIONS h lAn investigation revealed that the torque limit switch had opened, causing the motor l!1 oli li lto stop.The valve was manually shut then cycled four times electrically and the 1l i l ;, l [ problem could not be made to recur. This is considered an isolated event and no l further action is required.

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

@ l0 l 9 l 3 l@

NAllA lgl Operator Surveillance s E[i A flVI T Y CONTENT RELEASED OF RE LE ASF AVOUNT OF ACTIVITY LOCA TION OF RELE ASE Lz J @ l zl@l NA ll NAl'c 1 8 9 10 11 44 45 80 PEHSONNEL f xPOsuMES

'NUYRfH TYPE DE SC A I P TION Q]Ol0l@lZ @l NAli 7 1 8 9 11 17 13 80 PENJNNE L Injure ES N L'Y B E R CESCH.PTION NAll0l0[0l@li 8 8 9 11 12 LOSS OF OH DAY AGE TO F ACILITY 79()9280'TYPE DE SCFllP T ION l Z l@l NA li 9 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 1llllllLJ j 1 8 9 10 CH 69 80 g A. C. To111 son, Jr.

919-457-9521 g pg g,y .N Avr OF PUF PArtF ,,