ML19345A850

LER 80-039/03L-0:on 801022,during Normal Operation,While Conducting Isolation Condenser Valve Operability Tests, Inboard Isolation Valve 3-1301-1 Became Inoperable When Breaker Tripped Upon Receiving Open Signal.Cause Unknown

ML19345A850
Person / Time
Site:	Dresden
Issue date:	11/17/1980
From:	Magrow R COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17193A552	List: ML17193A551 ML19345A850
References
LER-80-039-03L-01, LER-80-39-3L-1, NUDOCS 8011250334
Download: ML19345A850 (1)

Text

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. 25 I718 10el@ l l EVENT CESCRIPTION A00 PMC8 A8LE CONSECUENcIS h I a ,2 ! I During normal operations, while conducting Isolation Condenser valve operability tests,j [

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i,,,; ; cripped upon receiving a valve open signal. Safety significance was minimsl because l ,

ini,j ; outboard isolation valve 3-1301-2 had been tested operable previously and the valve ,

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cAuSE CESCRIPTION AND CORRECTIVE ACTICNS h q ;i ; a l l The cause of the event is unknown. The 3-1301-1 valve is a Crane, li inch, motor  ;

,, ,, ,; operated gate valve. Following breaker trip, the breaker was ir: mediately reset and  ;

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