ML20148G581

RO 80-49/1P:on 801105,while Removing Isolation Condenser B from Svc to Repair Steam Leak on Vent Isolation Valve V-14-15,isolation Valves V-14-1 & V-14-19 for Condenser Failed to Close.Cause Still Under Investigation

ML20148G581
Person / Time
Site:	Oyster Creek
Issue date:	11/05/1980
From:	JERSEY CENTRAL POWER & LIGHT CO.
To:
References
RO-80-049-01P, RO-80-49-1P, NUDOCS 8011120516
Download: ML20148G581 (2)

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T Forked River, New Jersey 08731

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1.icense Event Report

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'~f Reportable Occurrence No. 50-219/BO-49/IP'

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~ U Ed l November 5, 1980 Ident5McutSam est occurrence Degradstias of the reactor coolan* . essure bowntary and primary containment uhem t:be Isolation Condenser vent uslation valves (Y-14-1 and V-14-19) for Isolatfoe Condenser "B" were suspected to have failed to close and also operation le a degraded ande as per Technical Specifications section 3.8.C.

This event is considered to be a reporr.able occunw as defined fa the Technical Speci fications, paragraph 6.9.2.a.(3) and 6.9.2.b.(2).

Ce4itions Prfor to Occurrence

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'3he ytant s aparating at str.ady stite power.

Plant parameters at the time of occurrence were:

i Pomer. Core 1737 Mit i

Doctricai 535 late

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Recirculation 14 6 x 100gym

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. Feedmater 5.9 x 100 lb/hr Bescripeten of Ccc.i.. ce, l i

l On lindnesday November 5,1980, at about 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, while removing Isolation

rm4me,e T from service to repair a steen leak on vest isolation valve Y  ! 19 . vest festation velves Y-14-1 and Y-14-19 for the condenser failed to close l Oty the waive posittom fadication) when operated from the control nam.

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Apparent cause of Occurrence -

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actuation or on signals which close the MSIV's. Failure of' these valves to i

close would have resulted .in a degradation of the reactor coolant pressure boundary and primary containment.

Comeetfwe Action

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Condenser System "A" and then close the steam inlet valves to Isolation Condenser "B".

Ecflure Tuta a

Skinner Precision Industries Skinner /Uniflow Talve Division

,V4" Type 800 straight through valve Serial f*s 10DC (F-14-1) .

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