ML18139A529

LER 80-019/03L-0:on 800822,during Operation Trip Valve TV- SS-206B Would Not Stay Closed When Actuated from Control Room.Caused by Misadjusted Limit Switch.Valve Isolated & Position Limit Switch Readjusted

ML18139A529
Person / Time
Site:	Surry
Issue date:	09/19/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A527	List: ML18139A526 ML18139A528 ML18139A529 ML18139A530
References
LER-80-019-03L-03, LER-80-19-3L-3, NUDOCS 8009240471
Download: ML18139A529 (2)

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!With the Unit at power, TV-SS-206B would not remain closed when actuated

!Ii)) from the control room. Isolation of the sample system was available by another valve,

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• I therefore the health and safety of the general public were not affected. This event C§:II] ~s contrary to Technical Spe,cification 3 .8. A. ( 1) and report ab le per Technical Specif-filD cation 6.6.2.b.(l)

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e ATTACHMENT 1 SURRY POWER STATION, UNIT 2 DOCK.ET NO: 50-:-281 REPORT NO: 80-019-03L-O EVENT DATE: 08-22-80 TITLE OF EVENT: TRIP VALVE Tv~ss-206B INOPERABLE

1. Des*cription of Event:

With the Unit at power, TV-SS-206B. would not remain' closed when actuated from the control room. This event is contrary to Technical Specification 3.8.A.l. and_reportable per Technical Specification 6.6.2.b.{1)

2. Probable Consequences of Event:

Assuming total inoperability of the valve, the health and safety of the general public would not have been affected since automatic sample system isolation was available by series valve TV-,SS-206A located in-side of containment.

3. Cause of Event:

The failure_of TV-SS-206B .. to remain ciosed was due to a misadjusted limit switch.

4. Innnediate Corrective Action:

The immediate corrective action was to -isolate TV-SS-206B, by a manual val\re down stream.

5. Scheduled Corrective Action:

The-position limit switch to TV-SS-206B was readjusted.

6. Action Taken to Prevent Recurrence:

None

7. Generic Implications:

None