ML20150D069

/03L-0 on 781028:SJAE Offgas Radiat Monitor Readings Were Low Caused by Shut Block Valve to FCV-118. Valve Was Opened.Proper Flow Rate Established.Valve Will Be Properly Identified in Future by Personnel

ML20150D069
Person / Time
Site:	Pilgrim
Issue date:	11/27/1978
From:	Mathis C BOSTON EDISON CO.
To:
Shared Package
ML20150D060	List: ML20150D058 ML20150D069
References
LER-78-052-03L, LER-78-52-3L, NUDOCS 7812040176
Download: ML20150D069 (1)

Text

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8 01 DOCKET NUMutit ul t/J LVENT CATE 14 D REPOHT DAT E 10 EVENT DESCntPTION'AND PROD ADLE CONSEQUENCES h o l 2 I [ On October 28, 1978, while conducting a routine startup, it was observed that the SJAE l g;3; ; offgas radiation monitor readings vere low. Investigation revealed that the block  ;

og,;; valve to FCV-ll8 was shut. The block valve was opened and proper flow rate established.l g,g, , Readings, after return to servi'ce, were normal, verifying that a condition had not  ;

g g ; g existed which would have required the isolation function of this instrument to actuate; }

D ] 7 l l therefore public health and safety was not affected. ' .

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i l 0 l l Discussions with personnel who would normally have 'a need to operate this valve df.s- l i;il l closed that no operations had been in progress which would have required repositioning  ;

, ; ., ; [ the block valve. This valve will be adequately identified to preclude future l 3 , ., ; j occurrences.  ;

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. . . . . . . ... Charles J. Mathis 617-746-7900  ?