05000366/LER-1980-118-03, /03L-0:on 800804,during Normal Operation,Drywell a hydrogen-oxygen Analyzer Failed.Caused by Instrument Drift of Reagent Gas Flowmeter.Reagent Gas Flow Was Adjusted to Correct Flow Rate.Analyzer Was Returned to Svc

/03L-0:on 800804,during Normal Operation,Drywell a hydrogen-oxygen Analyzer Failed.Caused by Instrument Drift of Reagent Gas Flowmeter.Reagent Gas Flow Was Adjusted to Correct Flow Rate.Analyzer Was Returned to Svc

ML19344E114
Person / Time
Site:	Hatch
Issue date:	08/19/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19344E107	List: 05000366/LER-1980-118, Forwards LER 80-118/03L-0 05000366/LER-1980-118-03, /03L-0:on 800804,during Normal Operation,Drywell a hydrogen-oxygen Analyzer Failed.Caused by Instrument Drift of Reagent Gas Flowmeter.Reagent Gas Flow Was Adjusted to Correct Flow Rate.Analyzer Was Returned to Svc
References
LER-80-118-03L, LER-80-118-3L, NUDOCS 8008260644
Download: ML19344E114 (2)

LER-1980-118, /03L-0:on 800804,during Normal Operation,Drywell a hydrogen-oxygen Analyzer Failed.Caused by Instrument Drift of Reagent Gas Flowmeter.Reagent Gas Flow Was Adjusted to Correct Flow Rate.Analyzer Was Returned to Svc

Event date:
Report date:
3661980118R03 - NRC Website

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8 00 63 OOCKET NUUDER to 6'J EVEN'DATE 74 7b REPORTDATE 80 EVENT DESCRIPTION AND PROBABLE CONSCOUENCES h 1012ll During normal operation at steady state power of 2300 MWt oDerators dis-l 0 3 l covered the "A" Drywell 112 - 02 analyzer had failed.

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ggl found the analyzer was giving a false high 09 reading due to an incorrect l

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NARRATIVE

REPORT Georgia Power Company i

plant E. 1. llatch Baxicy, Georgia 31513 Reportable Occurrence Report No. 50-366/1980-118 2300 11W on August 4, 1980, during normal operation at a steady state power of thermal the operator discovered that the "A" Drywell 110,, analyzer had failed.

2 Upon investigation it was discovered the analyzer was giving a high 0 reading 2

due to an incorrect reagent gas flow. The "B" analyzer was operable and still in service. Tech Spec 3.3.6.4 requires two analyzers in service or be restored to operable status within 30 days. There were no ef fects upon public health or safety due to this event. This is a repetitive event as last reported on Reportable Occurrence Report 50-366/1980-009.

The cause has been attributed to instrumet.t drif t of the reagent gas flovmeter i

t which is a Brooks Model 1350. The reagent gas flow was adjusted to the correct flow rate and the analyzer was returned to service.

l The operation of the plant was not af fected. Unit II is the only unit that utilizes this type of analyzer, Consip Delphi !!odel K-4.

No inherent problems i

were found during the generic review.