05000316/LER-1980-007-03, /03L-0:on 800129,during Surveillance Test, Containment Isolation Valve NCR-252 Did Not Close Fully. Cause Unknown.New Diaphragm Placed in Valve Operator.Valve Restroked & Timed Before Returning to Svc

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/03L-0:on 800129,during Surveillance Test, Containment Isolation Valve NCR-252 Did Not Close Fully. Cause Unknown.New Diaphragm Placed in Valve Operator.Valve Restroked & Timed Before Returning to Svc
ML17326A542
Person / Time
Site: Cook 
Issue date: 02/28/1980
From: Rischling J
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A539 List:
References
LER-80-007-03L, LER-80-7-3L, NUDOCS 8003040543
Download: ML17326A542 (1)
v • d • e


LER-1980-007, /03L-0:on 800129,during Surveillance Test, Containment Isolation Valve NCR-252 Did Not Close Fully. Cause Unknown.New Diaphragm Placed in Valve Operator.Valve Restroked & Timed Before Returning to Svc
Event date:
Report date:
3161980007R03 - NRC Website
v • d • e

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8 0 Q 60 61 DOCKET NUMBER EVENT DATE 74 75 RFPPR1'ATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 DURING NORMAL OPERATION WHILE PERFORMI A SURVEILLANCE TEST, CONTAINMENT QB ISOLATION VALVE NCRL252 (PRIMARY WATER TO THE PRESSURIZER RELIEF TANK) DID NOT 4

CLOSE FULLY.

THIS VIOLATED T.S. 3.6.3.1.

AN UPSTREAM MANUAL ISOLATION VALVE WAS SHUT UNTIL NCR-252 WAS RETURNED TO SERVICE.

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NCR-252 WAS 1HEN RESTROKED AND TIMED AS RE(UIRED BY T.S. 4.6.3.1.1.

PRIOR TO BEING RETURNED TO SERVICE.

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