05000277/LER-1980-020-01, /01T-0:on 800926,breaker Which Supplies Power to B Standby Liquid Control Sys Pump & B Squib Valve Found Open. Caused by Accidental Tripping of Pump Breaker.Breaker Switches of All Sblc Pumps Locked

/01T-0:on 800926,breaker Which Supplies Power to B Standby Liquid Control Sys Pump & B Squib Valve Found Open. Caused by Accidental Tripping of Pump Breaker.Breaker Switches of All Sblc Pumps Locked

ML19340B282
Person / Time
Site:	Peach Bottom
Issue date:	10/10/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340B277	List: 05000277/LER-1980-020, Forwards LER 80-020/01T-0 05000277/LER-1980-020-01, /01T-0:on 800926,breaker Which Supplies Power to B Standby Liquid Control Sys Pump & B Squib Valve Found Open. Caused by Accidental Tripping of Pump Breaker.Breaker Switches of All Sblc Pumps Locked
References
LER-80-020-01T, LER-80-20-1T, NUDOCS 8010210735
Download: ML19340B282 (1)

LER-1980-020, /01T-0:on 800926,breaker Which Supplies Power to B Standby Liquid Control Sys Pump & B Squib Valve Found Open. Caused by Accidental Tripping of Pump Breaker.Breaker Switches of All Sblc Pumps Locked

Event date:
Report date:
2771980020R01 - NRC Website

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!Ml With unit at full power, the "SBLC Loss of Continuity" alarm was I

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'B' SBLC pump and

'B' Squib valve was open.

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40 48 42 43 44 4s CAUSC GCSCH1PTioN ANo CORRECTIVE ACTIONS IT A I Cause of event is believed to be an accidental tripping of the pump I

t.!il l breaker by someone bumping the switch which was at knee level and was I

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- adjacent to a step-off pad. The breaker switches of all EBLC pumps l

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' the step-off pad has been removed.

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