ML20027A121

LER#78-051/03L-0 on 780907:during Survey Dis 1600-11,valve #2-1601-24 Failed to Oper in Specified Time Limit,Probably Caused by Foreign Matter Lodging in Solenoid Oper 4-way Valve

ML20027A121
Person / Time
Site:	Dresden
Issue date:	10/02/1978
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML17173A282	List: ML17173A281 ML20027A121
References
LER-78-051-03L, LER-78-51-3L, NUDOCS 7810130170
Download: ML20027A121 (1)

Text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l i

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, EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h REPoR7 oATE 80 1 o l 21 [ While performing surv. DIS ~

1600-11 (Press. Suppression Air Oper .

Viv. press sw. setpt I o131 l e .) valve 2-1601-24 failedtooperaheinthespecifiedtimelimitrequiredbyTS . .

S 4j [ 4s7.D.1.a, Table 3.7.1. J Safety significance minimal because redundant (inboard) iso- I oisj l 1ation valve was operable and would have provided containment pec-

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o is 1 I ified times as required.

! This is the first occurrence of this type at Dresden.

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g gabnormalities. I With exception to the initial valve operation all subsequent operations '

g [ vare well within the specified times setforth in the Tech. Specs.

Because of the I g3 g g singular nature of the event no further actions are~ deemed necessary.

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