05000293/LER-1980-013-03, /03L-0:on 800313,while Performing Surveillance Test 8.M.1-5,found Pressure Switch 503D Setpoint Drifted. Cause Not Stated.Drift Is Recurring Problem

/03L-0:on 800313,while Performing Surveillance Test 8.M.1-5,found Pressure Switch 503D Setpoint Drifted. Cause Not Stated.Drift Is Recurring Problem

ML19323A510
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
ML19323A508	List: 05000293/LER-1980-013, Forwards LER 80-013/03L-0 05000293/LER-1980-013-03, /03L-0:on 800313,while Performing Surveillance Test 8.M.1-5,found Pressure Switch 503D Setpoint Drifted. Cause Not Stated.Drift Is Recurring Problem
References
LER-80-013-03L, LER-80-13-3L, NUDOCS 8004210292
Download: ML19323A510 (1)

LER-1980-013, /03L-0:on 800313,while Performing Surveillance Test 8.M.1-5,found Pressure Switch 503D Setpoint Drifted. Cause Not Stated.Drift Is Recurring Problem

Event date:
Report date:
2931980013R03 - NRC Website

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U. S. NUCLEAR HEGULAT'OliY COMstlSSION IRC FORM 366 7 77)

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B 60 61 DOCK ET NUMB E R 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O l 21 ]

On March 13, 1980 while performing surveillance test number 8.M 1-5 ft was de-1 O la l l termined that Pressure Switch 503D setpoint had drif ted.

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o l4 l l a condenser low vacuum switch in the RPS System. The pressure svitch tripped at I

oisl l 292 inches H 0.

The minimum trip point is 313.3 inches H 0.

The pressure switch I

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lO ls ] l was recalibrated to a setpoint of 339 inches H 0 and returned to service.

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8 9 10 ISS DESCRtPTION 121o1LdUE81 N.A.

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