05000293/LER-1980-012-03, /03L-0:on 800312,while Performing Surveillance Test,Found That Pressure Switch 263-52A Setpoint Had Drifted.Cause Not Stated.Setpoint Drift Is Recurring Problem.Pressure Switch Recalibr

/03L-0:on 800312,while Performing Surveillance Test,Found That Pressure Switch 263-52A Setpoint Had Drifted.Cause Not Stated.Setpoint Drift Is Recurring Problem.Pressure Switch Recalibr

ML19309E558
Person / Time
Site:	Pilgrim
Issue date:	04/11/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309E551	List: 05000293/LER-1980-012, Forwards LER 80-012/03L-0 05000293/LER-1980-012-03, /03L-0:on 800312,while Performing Surveillance Test,Found That Pressure Switch 263-52A Setpoint Had Drifted.Cause Not Stated.Setpoint Drift Is Recurring Problem.Pressure Switch Recalibr
References
LER-80-012-03L, LER-80-12-3L, NUDOCS 8004220631
Download: ML19309E558 (1)

LER-1980-012, /03L-0:on 800312,while Performing Surveillance Test,Found That Pressure Switch 263-52A Setpoint Had Drifted.Cause Not Stated.Setpoint Drift Is Recurring Problem.Pressure Switch Recalibr

Event date:
Report date:
2931980012R03 - NRC Website

text

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LICENSEE EVENT REPORT l

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60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT D ATE 80 EVENT DESCRIPTION AND PROBABLE CONSECUENCES h Io l2l l On March 12, 1980 while performing surveillance test number 8.M.2-2.1.8 it was de-l io ;3 ; l termined that Pressure Switch 263-52A setpoint had drifted. The pressure switch is l

10 l a l l a low pressure permissive for opening the LPCI injection valves. The pressure l

[o Isl I switch tripped at 383 psig. The minimum trip point is 388 psig. The pressure l

[ o le 1 l switch was recalibrated to a setpoint of 409 psig and returned to service.

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617-746-7900 NAME OF PREPARER PHONE:

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