ML19210E362

LER 79-034/03L-0:on 791101,during Surveillance Testing, Standby Liquid Control Pump Relief Valve Operated Below Tech Spec Limit.Caused by Setpoint Drift on Jmsk Crosby Valve. Valve Readjusted within Tech Spec Limit

ML19210E362
Person / Time
Site:	Peach Bottom
Issue date:	11/28/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-034-03L-01, LER-79-34-3L-1, NUDOCS 7912040405
Download: ML19210E362 (1)

Text

, _

Mr. Doyce H. Grice, Director .

No.

Office of Inspection (, Enforcement, Region l 3 79 3h/3L o U.S. Nuc lear Regulatory Corrinission 631 Park Avenuc King of Prussio, PA 1 % 06 Dc .n Mr. Gricrt This LER refers to the setpoint drift of the standby liquid control pump relief vr.1ve. The governing Tech Speo is h.h. A.2. A U. S NtJCL E AR RE GUL A1oHY cOVW5510N LICENSEE LVENT REPORT coNinol etocic l l l l l l

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DOC at t f 88 UMP f # 8 Evt %f Da11 74 75 pt *08t1 D a t t SC EVENT DESCRIPTION ANo Pros ABLE CONSEQUENCES h'st 2 l Iharinz surveillance _Jea. ting _the_ atwLdby_ liquid _s;on.tro.Lpump relief l o 3 L valve operated below Tech Spec limits.__The valve operated at 1225 PGIG {

[nI4) L which is below the required minimim sot _t.ing of 1h00 PSIG. Redundant t

[j@ L _ pump and_ relief valve weg erable to mitigate the consequences of the 1 8 ] L __ I w er relief valve setting.

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[T{K] [ The cause was setpoint drift on model JWK Crosby valve which Q] [_ wa_s _ readjusted, retested, and returned to service. Test resulta were i gp[ within Tech Spec limits.

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