05000254/LER-1981-003-03, /03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr

/03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr

ML19345E933
Person / Time
Site:	Quad Cities
Issue date:	01/21/1981
From:	Wunderlich J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19345E929	List: 05000254/LER-1981-003, Forwards LER 81-003/03L-0 05000254/LER-1981-003-03, /03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr
References
LER-81-003-03L, LER-81-3-3L, NUDOCS 8102060443
Download: ML19345E933 (1)

LER-1981-003, /03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr

Event date:
Report date:
2541981003R03 - NRC Website

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4 EVENT DESCRIPTION AND PROBABLE CONSECUENCES h

igj While performing the High Drywell Pressure ECCS Initiation Calibration and I

g o,3 ; j Fi*nctional Test, procedure QlS-7, pressure switch PS-1-1001-90D was found to trip at l i O i., j l 2.03 psig. This was higher than the 2.0 psig LCO setpoint defined in Technical l

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