ML19260B165

LER 79-047/03L-0:on 791029,valves SV2671A & SV2671B Failed to Close During Surveillance Testing of Dioxide Analyzer Primary Containment Valves.Caused by Piston Binding in Valve Body.Valve Internals Rebuilt

ML19260B165
Person / Time
Site:	Peach Bottom
Issue date:	11/28/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-047-03L, LER-79-47-3L, NUDOCS 7912070349
Download: ML19260B165 (1)

Text

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r. n q . . roc. n i i. IA  : i 4.. n This LER retcrs to the failure of a primary containment isolation valve. The applicable Technical Specifications are 3 7.D.1 and 3 7,0.2.

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._ e i._ Curing ;urveillance testing of 02 analyzer primary containment i sol ation _____

~_-E ( __. valves . two valves, SV2671 A and SV26718 failed to close. Redundent _ _ __ l B i isolation valves wert operable. In accordance with TS 3.7.0.2, the ,j n Janual isolation valves in series with the inoperable isolation velves ,

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] l_ were_ blocked closed until repairs were completed. Five sample points ,_ _

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{ _ remained operable _ for containment oxygen monitoring. Previous occur- _

-r ci , rences were LERs 2-78 45/3L, 2-79-19/3L, and 2/79-30/3L. _ _

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-II, Atkomatic_1/2" solenoid velv.cs. failed _to.close due to binding.of_the. i

'__i.] i_Pi.s_tgt n_ i the valve body. Valve internal s were.rebuil t. Surveillance _

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