05000265/LER-1979-022-03, /03L-0:on 791005,vacuum Breaker AO 2-1601-32B Failed to Give Full Open Red Light Indication.Caused by Valve Position Indicating Switch Problem.Corrective Actions to Be Completed During Nov 1979 Refueling Outage

/03L-0:on 791005,vacuum Breaker AO 2-1601-32B Failed to Give Full Open Red Light Indication.Caused by Valve Position Indicating Switch Problem.Corrective Actions to Be Completed During Nov 1979 Refueling Outage

ML19256E505
Person / Time
Site:	Quad Cities
Issue date:	10/25/1979
From:	Kan S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19256E504	List: 05000265/LER-1979-022, Forwards LER 79-022/03L-0 05000265/LER-1979-022-03, /03L-0:on 791005,vacuum Breaker AO 2-1601-32B Failed to Give Full Open Red Light Indication.Caused by Valve Position Indicating Switch Problem.Corrective Actions to Be Completed During Nov 1979 Refueling Outage
References
LER-79-022-03L-03, LER-79-22-3L-3, NUDOCS 7911070545
Download: ML19256E505 (1)

LER-1979-022, /03L-0:on 791005,vacuum Breaker AO 2-1601-32B Failed to Give Full Open Red Light Indication.Caused by Valve Position Indicating Switch Problem.Corrective Actions to Be Completed During Nov 1979 Refueling Outage

Event date:
Report date:
2651979022R03 - NRC Website

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60 61 DOCKET NUMBER 68 (VFNT OATH 74 75 REDORT J ArE 8J EVENT DESCRIPTION AND PROBABLE CONSEQUENCE: hiv l While conductino the suppression chamber to drywell vacuum breaker monthly exercise, o

procedure QOS 1600-1, vacuum breaker A0 2-1601-328 failed to give a full open red l

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Corrective action being taken is to perform the differential pressure decay I i i g l rate test as required.

During the November 1979 mfuelina outage, a detailed g ] examination and repair will be made prior to unit startup and oDeration.

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