05000366/LER-1981-042-03, /03L-0:on 810426,while Performing Standby Gas Treatment Sys Ventilation Operability Surveillance,Refueling Floor Outlet Damper Was Found Inoperative.Caused by Faulty Pilot Solenoid Valve.Valve Was Replaced

/03L-0:on 810426,while Performing Standby Gas Treatment Sys Ventilation Operability Surveillance,Refueling Floor Outlet Damper Was Found Inoperative.Caused by Faulty Pilot Solenoid Valve.Valve Was Replaced

ML20004B968
Person / Time
Site:	Hatch
Issue date:	05/21/1981
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004B960	List: 05000366/LER-1981-042, Forwards LER 81-042/03L-0 05000366/LER-1981-042-03, /03L-0:on 810426,while Performing Standby Gas Treatment Sys Ventilation Operability Surveillance,Refueling Floor Outlet Damper Was Found Inoperative.Caused by Faulty Pilot Solenoid Valve.Valve Was Replaced
References
LER-81-042-03L-01, NUDOCS 8106010365
Download: ML20004B968 (2)

LER-1981-042, /03L-0:on 810426,while Performing Standby Gas Treatment Sys Ventilation Operability Surveillance,Refueling Floor Outlet Damper Was Found Inoperative.Caused by Faulty Pilot Solenoid Valve.Valve Was Replaced

Event date:
Report date:
3661981042R03 - NRC Website

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8 60 61 DOCKETf4UMSER t>8 69 EVENT DATE 74 7b REPORT DATE 80 l

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h With the plant at a steady state of operation while performing HNP-2-3655, l

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'IO lsi I as per Tech Specs 3.6.6.1.A.

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repetitive event.

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40 43 42 43 44 47 CAUSE DESCRIPTION ANo CORRECTIVE ACTIONS h I li l0 l l The cause of the valve being inoperative was due to a faulty pilot I

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solenoid valve. The pilot solenoid valve was replaced and HNP-2-3655 I

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3 LER No.: 50-366/1981-042 Licensce: Georgia Power Company-Facility: Edwin I. Hatch Docket No.: 50-366

Narrative

Report for LER 50-366/1981-042 With the reactor at 2425 MWt, on April 26,1981, the 2T46-F003A, Refueling Floor Outlet Damper, failed to operate while performing HNP-2-3655, Standby Gas Treatment System Ventilation Operability Surveillance. This valve is required to be operable per Tech Spec 3.6.6.1. A.

The redundant ventilation system was proven operable.

Plant Operation was not affected as a result of this event. This is a non-repetitive event.

The cause of this occurrence has been attributed to a faulty pilot solenoid valve. The pilot solenoid valve was replaced and HNP-2-3655 was performed satisfactorily.

A generic review revealed no inherent problems with valve operators of this type.

Public health and safety were not affected by this event.

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