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RO 80-049/01P:on 801105,while Removing Isolation Condenser B from Svc to Repair Steam Leak,Vent Isolation Valves V-14-1 & V-14-19 for Condenser Failed to Close.Cause Unknown.Operability Check Performed & Valves Closed
	ML20037B793
Person / Time
Site:	Oyster Creek
Issue date:	11/06/1980
From:	; JERSEY CENTRAL POWER & LIGHT CO.
To:	;
References
	RO-80-049-O1P, RO-80-49-O1P, NUDOCS 8012040489
	Download: ML20037B793 (3)
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License Event Report Reportable Occurrence !!o. 50-219/80-49/IP a a r enm :--

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t IderstWscstS1:e essf Occurrence

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Degradation of the reactor coolant pressure boundary and primary containment --

when the Isolation Condenser vent isolation valves (Y-14-1 and Y-14-19) for Is0Tacfon CchAwar "B" were saspected to have failed to close and also operation in a degraded mada as per Technical Specifications section 3.8.C.

This event is considered to be a reportable occurrence as defined fa the Technical Speci fh.atiores, paragraph 5.9.2.a.(3) and 6.9.2.b.(2).

Conditions Frfor to Occurrence 1he 74 asst m, aparating at steady state power.

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FLust parameters at the time of occurrence were:

Power:

Core 1737 Mft Electricai 535 Mee 0

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Recirculation 14.5 x 10 gym Feenhunter 5.9 x 106 lb/br l

. h ipties of Occurrence 4

! Os Wednesday November 5,1980, at about 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, whne remoriog Isolation

' condeem *** from service to repair a staan leak on vest isolation valve Y ! 19 vent 1setattes valves Y-14-1 and Y-14-19 for the condenser failed to close i (by the valve position indication) when operated from the control room.

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,,R11Atshtemasaf.taiiiisT&fsteams MaeJ isolation Mwes f, MS}Wgtare.provided. *;";. r

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actation or on signals which close the MSIV's.

Failure of these valves to close would have resulted.in a degradation of the reactor coolant pressure

__ boundary and primary containment.

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

FafTure Data Skinner Precision Industries Skinner /Uniflow Yalve Division 3/4" Type 800 straight through valve Serial f's 1GDC U-14-1)

ISETE (Y-14-19)

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ML20037B793

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