05000321/LER-1979-096-03, /03L-0:on 791127,while Performing Dihydrogen & Dioxygen Analyzer Instrument Calibr,Oxygen Analyzers on P33-P001A & B Found Out of Tolerance.Caused by Instrument Drift.Analyzers Recalibr

/03L-0:on 791127,while Performing Dihydrogen & Dioxygen Analyzer Instrument Calibr,Oxygen Analyzers on P33-P001A & B Found Out of Tolerance.Caused by Instrument Drift.Analyzers Recalibr

ML19211A294
Person / Time
Site:	Hatch
Issue date:	12/11/1979
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19211A292	List: 05000321/LER-1979-096, Forwards LER 79-096/03L-0 05000321/LER-1979-096-03, /03L-0:on 791127,while Performing Dihydrogen & Dioxygen Analyzer Instrument Calibr,Oxygen Analyzers on P33-P001A & B Found Out of Tolerance.Caused by Instrument Drift.Analyzers Recalibr ML19211A291
References
LER-79-096-03L-01, LER-79-96-3L-1, NUDOCS 7912170321
Download: ML19211A294 (2)

LER-1979-096, /03L-0:on 791127,while Performing Dihydrogen & Dioxygen Analyzer Instrument Calibr,Oxygen Analyzers on P33-P001A & B Found Out of Tolerance.Caused by Instrument Drift.Analyzers Recalibr

Event date:
Report date:
3211979096R03 - NRC Website

text

LICENSEE EV,ENT REPORT 1

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8 60 68 DOCKET NUYBE R 68 63 EVENT DATE 34 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h j

g l While performing surveillance procedure IINP-1-3882, H and O2 Analyzer Instrucient l

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g g Calibration, during steady state power operations, technicians found the oxygen l

g g analyzers On P33-P001A and B out of tolerance.

For an expected 5% oxygen concentra- [

g g tion, P33-P001A indicated 3% an'd P33-P001B indicated 2.5% oxy;;ea.

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affect on the environs. This is a nOn-repetitive event.

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NARRATIVE

REPORT Georgia Power Company Plant E. I. Hatch Baxley, Georgia 31513 Reportable Occurrence Report No. 50-321/1979-096 While performing surveillance procedure HNP-1-3882, H2 and 02 Analyzer Instrument Calibration, during steady state power operation at 98% power, technicians found the oxygen analyzers on panel P33-P001A and B out of tolerance.

For an expected 5% oxygen concentration "A" indicated 3% and "B" indicated 2.5% oxygen. There was no affect on the environs. This is a non-repetitive event. The cause of the occurrence has been attributed to instrument drif t.

The analyzers were re-calibrated and successfully retested. This problem is only applicable to Unit 1 because a different analyzer is utilized for the Unit 2 drywell/ torus H2 and 02 analyzer. The analyzers are not utilized on any other safety related system on either-unit.

1592 299 i

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