05000321/LER-1980-068-03, /03L-0:on 800619,1P33-R601 Drywell Dihydrogen/ Dioxide Recorders Observed Reading Abnormally High Oxygen Content.Caused by Water Present in Dioxide Analyzer Sample Line.Design Change Implemented

/03L-0:on 800619,1P33-R601 Drywell Dihydrogen/ Dioxide Recorders Observed Reading Abnormally High Oxygen Content.Caused by Water Present in Dioxide Analyzer Sample Line.Design Change Implemented

ML19320C579
Person / Time
Site:	Hatch
Issue date:	07/08/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19320C571	List: 05000321/LER-1980-068, Forwards LER 80-068/03L-0 05000321/LER-1980-068-03, /03L-0:on 800619,1P33-R601 Drywell Dihydrogen/ Dioxide Recorders Observed Reading Abnormally High Oxygen Content.Caused by Water Present in Dioxide Analyzer Sample Line.Design Change Implemented
References
LER-80-068-03L-01, LER-80-68-3L-1, NUDOCS 8007170408
Download: ML19320C579 (2)

LER-1980-068, /03L-0:on 800619,1P33-R601 Drywell Dihydrogen/ Dioxide Recorders Observed Reading Abnormally High Oxygen Content.Caused by Water Present in Dioxide Analyzer Sample Line.Design Change Implemented

Event date:
Report date:
3211980068R03 - NRC Website

text

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8 00 bl DOCKE T NUMULH bd FJ LVENT DATE 14 14 IIEPORT DATE 80 EVENT DESCulPTION AND PRODABLE CONSEQUENCES h o I/I l While making load changen during routine power operation, 1p33-R601, l

oj3yl Drywell n2/02 Recorders, was observed reading abnormallv high oxygen con-l o l4 l l tent. The redundant recorder, lp33-R601A, was indicating properly at the l

ng3; j time.

There was no effect upon public healt' m safety due to this event.

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l 0l7ll Report No. 50-321/1979-096.

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NARRATIVE

REPORT Georgia Power Company Plant E.

I. Ilatch Baxicy, Georgia 31513 Reportabic Occurrence Report No. 50-321/1980-068.

While making load changes during routine power operation at 1511 MWt, the drywe1111 /02 recorder, IP33-R601D, was observed to be indicating two per-2 cent higher oxygen content than the redundant recorder, lP33-R601A.

1P33-R601A was determined to be indicating properly.

The event had no effect upon public health and safety nor upcn safe plant operation.

The event was repetitive as last reported on Reportable Occurrence Report No. 50-321/1980-096.

Investigations revealed the event was attributable to the presence of water in the sample line of the oxygen analyzer, 1P33-P001H.

The water was purged from the sample line and the recorder indication returned to normal. A design change was implemented on both analyzers to increase the frequency in which the analyzer automatically purges the sample line from one hour to twenty minutes.

The problem of condensation in the sampic lines is inherent to both Unit I analyzers. The Unit II analyzers are manufactured by a different company.

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