05000254/LER-1981-004-03, /03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr

/03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr

ML20004D496
Person / Time
Site:	Quad Cities
Issue date:	01/23/1981
From:	Wunderlich J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20004D492	List: 05000254/LER-1981-004, Forwards LER 81-004/03L-0 05000254/LER-1981-004-03, /03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr
References
LER-81-004-03L-01, LER-81-4-3L-1, NUDOCS 8106090466
Download: ML20004D496 (1)

LER-1981-004, /03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr

Event date:
Report date:
2541981004R03 - NRC Website

text

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60 GB DOCKET Nu'JsER 64 69 EVENT OATE 74 75 REPORT C ATE SJ EVENT DESCRIPT!oN AND PROB ABLE CONSEQUENCES h l<i:l l While performing QlS 10 monthly functional and quarterly callbration test, reactor l

[;, j l low low level switch LS-1-263-57A was found to trip at 117" H 0.

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Specifications require a trip setpoint of less than or equal to 109.75" H 0.

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