05000254/LER-1980-031-03, /03L-0:on 801124,pressure Switch PS-1-261-30D Tripped Low During Main Steam Line Low Pressure Calibr Test. Caused by Instrument Setpoint Drift.Pressure Switch Recalibr & Tested Satisfactorily

/03L-0:on 801124,pressure Switch PS-1-261-30D Tripped Low During Main Steam Line Low Pressure Calibr Test. Caused by Instrument Setpoint Drift.Pressure Switch Recalibr & Tested Satisfactorily

ML20004D577
Person / Time
Site:	Quad Cities
Issue date:	12/11/1980
From:	Steffes C COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20004D568	List: 05000254/LER-1980-031, Forwards LER 80-031/03L-0 05000254/LER-1980-031-03, /03L-0:on 801124,pressure Switch PS-1-261-30D Tripped Low During Main Steam Line Low Pressure Calibr Test. Caused by Instrument Setpoint Drift.Pressure Switch Recalibr & Tested Satisfactorily
References
LER-80-031-03L-03, LER-80-31-3L-3, NUDOCS 8106090546
Download: ML20004D577 (1)

LER-1980-031, /03L-0:on 801124,pressure Switch PS-1-261-30D Tripped Low During Main Steam Line Low Pressure Calibr Test. Caused by Instrument Setpoint Drift.Pressure Switch Recalibr & Tested Satisfactorily

Event date:
Report date:
2541980031R03 - NRC Website

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68 DOCKET NUMSER EVENT DESCRIPTION AND PROBADLE CONSEQUENCES h 8

1 While performin'g QlS-20, Main Steam Line Low Pressure Calibration Test, pressure O l2j j

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switch PS-1-261-30D tripped at 843 psig. Technical Specification Tabic 3.2-1 l

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requires a setpoint of greater.than or equal to 850 psig.

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pressure switches were found to trip within the Technical Specification Limit.

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steam system had the need arisen.

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h is instrument setooint drlft.

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was recalibrated to 870 psia and was tested satisfactorilv.

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