05000368/LER-1980-084-03, /03L-0:on 801118,valve Stroke Time of MSIV 2CV-1010 Exceeded Limit.Caused by Valve Internal Damper Adjustment Drift.Valve Adjusted & Retested

/03L-0:on 801118,valve Stroke Time of MSIV 2CV-1010 Exceeded Limit.Caused by Valve Internal Damper Adjustment Drift.Valve Adjusted & Retested

ML19345D865
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/11/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19345D860	List: 05000368/LER-1980-084, Forwards LER 80-084/03L-0 05000368/LER-1980-084-03, /03L-0:on 801118,valve Stroke Time of MSIV 2CV-1010 Exceeded Limit.Caused by Valve Internal Damper Adjustment Drift.Valve Adjusted & Retested
References
LER-80-084-03L, LER-80-84-3L, NUDOCS 8012170630
Download: ML19345D865 (1)

LER-1980-084, /03L-0:on 801118,valve Stroke Time of MSIV 2CV-1010 Exceeded Limit.Caused by Valve Internal Damper Adjustment Drift.Valve Adjusted & Retested

Event date:
Report date:
3681980084R03 - NRC Website

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'.s REPONT D ATE d0 EVENT DESCRif' Tion AND FF:3 ABLE CONSEQUENCES O'o Io 121 l During ihde 3 operation, Main Steam Isolation Valve (MS' 2CV-1010 was i

t u ni i declared incoerable due to the valve stroke time exceer

.g the 3 second i I o u i I limi t of Tech. Soec. 4.7.1.5.

The measured stroke time was 3.12 sec.

I 6 o i si I 2CV-1010 would have closed on a MSIJ_ signal.

There have been no similar I e i i occurrences.

ReJortable per Tech. Spec. 6.9.1.9.b.

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Valve was adjusted and retested.

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Valve was 1 1 1 I declared ooerable within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. meetino the requirements of Tech. Spec. I i oit3.7.1.5.

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