05000366/LER-1981-055-03, /03L-0:on 810617,drywell Hydrogen Recombiner 2T49-C001B Failed to Reach 600 F within 60 Minutes Per Tech Specs.Caused by Breaker Feeding Heating Coils in Off Position.Breaker Reset

/03L-0:on 810617,drywell Hydrogen Recombiner 2T49-C001B Failed to Reach 600 F within 60 Minutes Per Tech Specs.Caused by Breaker Feeding Heating Coils in Off Position.Breaker Reset

ML20009G289
Person / Time
Site:	Hatch
Issue date:	07/21/1981
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G285	List: 05000366/LER-1981-055, Forwards LER 81-055/03L-0 05000366/LER-1981-055-03, /03L-0:on 810617,drywell Hydrogen Recombiner 2T49-C001B Failed to Reach 600 F within 60 Minutes Per Tech Specs.Caused by Breaker Feeding Heating Coils in Off Position.Breaker Reset
References
LER-81-055-03L-01, NUDOCS 8108040096
Download: ML20009G289 (2)

LER-1981-055, /03L-0:on 810617,drywell Hydrogen Recombiner 2T49-C001B Failed to Reach 600 F within 60 Minutes Per Tech Specs.Caused by Breaker Feeding Heating Coils in Off Position.Breaker Reset

Event date:
Report date:
3661981055R03 - NRC Website

text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER 68 69 EVENT OATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o l 21 l With the reactor operatina at 2253 MWt. the devwell hydrocen recombiner.

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O i3; i 2T49-C001B, failed to reach a temperature of 600 F within the 60 minutes l

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The plant was placed in a 30 day 1.C0 l

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There was no effect on public health and safety.

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33 34 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 111011 Investiaations revealed the breaker feeding the heating coils was in the I

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The breaker was reset and the svstem returned to spevica-1 l

The cause for the breaker beina in the off oosition is not known.

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LER No.:

50-366/1981-055 Licensee:

Georgia Power Company Facility:

Plant E. I. Hatch Docket No.:

50/366

Narrative

Report for LER 50-366/1981-055 With the reactor in steady state operation at 2253 MWt, the drywell hy-drogen recombiner, 2T49-C001B, failed to reach 6000 F within the 60 minutes required by Tech Specs 3.6.6.2.

The plant was placed in a 30 day LCO. There was no effect upon the health and safety of the public.

The power breaker to the heating coils was found in the off position.

There was no apparent reason for the breaker to be in the off position.

The breaker was reset and the system returned to service.

The generic review revealed no inherent problems with this event. This is a repetitive event as last reported on Reportable Occurrence Report No. 50-366/1980-073.

This report is being submitted at a time beyond 30 days of the discovery date due to personnel error.

The monitoring system has been reviewed and the appropriate personnel counseled to prevent future occurrences of this type.