ML19242C498

LER 79-021/03L-0 on 790630:during Surveillance Testing,Main Steam Sample Line Inboard Isolation valve,AO-3-2-316,failed to Close.Cause Under Investigation.Problem Will Be Resolved During Next Scheduled Outage

ML19242C498
Person / Time
Site:	Peach Bottom
Issue date:	07/30/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-021-03L, LER-79-21-3L, NUDOCS 7908100484
Download: ML19242C498 (1)

Text

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Dear Mr. Grie r:

This 1.ER refers to main steam sample line inboard isolation valve (AO-: 316) being inope rable. The applicable Technical Speci fications a re 6.9.2.b (2) and 3.7.D.2. U S NUCLE AR R E GUL A TOR Y COYMISSiO LICENSEE EVENT REPORT CONTROL BLOCK l l l l l lJ 1 6 (PLE ASE PRINT OR TYPE ALL REculRED INFORMATICN)

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E s ENT DE SCP'F T1ON AN ? FDCB ABL E CC .5E Q_ EN1E 5 [n J,] l Durins; surveillance testing, main steam sample line inboard isolation [ c l i [ L_ valve, ( AO-3-2-316Lfa11ed to close. In accordance with Technical

W L Specification 3.7.D.2, the redundant outbcard isolation valve was lcj<[ Loperable and closed and daily surveillance requirements for the

[ ele] E redundant isolation ilve are being performed. For these reasons the _ gni;; L ea fety signf ficance is considered mirimal. o - I

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