05000366/LER-1979-022-03, /03L-0 on 790209:floor Drain Sumps Flow Transmitters Incorrectly Calibrated & Indicated Higher than Actual Flow.Caused by Mod of Transmitter Range W/O Revision of Calibr Procedure.Calibr Procedure Revised

/03L-0 on 790209:floor Drain Sumps Flow Transmitters Incorrectly Calibrated & Indicated Higher than Actual Flow.Caused by Mod of Transmitter Range W/O Revision of Calibr Procedure.Calibr Procedure Revised

ML19282B417
Person / Time
Site:	Hatch
Issue date:	03/05/1979
From:	Thomas Greene GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19282B412	List: 05000366/LER-1979-022, Forwards LER 79-022/03L-0 05000366/LER-1979-022-03, /03L-0 on 790209:floor Drain Sumps Flow Transmitters Incorrectly Calibrated & Indicated Higher than Actual Flow.Caused by Mod of Transmitter Range W/O Revision of Calibr Procedure.Calibr Procedure Revised
References
LER-79-022-03L-01, LER-79-22-3L-1, NUDOCS 7903130356
Download: ML19282B417 (2)

LER-1979-022, /03L-0 on 790209:floor Drain Sumps Flow Transmitters Incorrectly Calibrated & Indicated Higher than Actual Flow.Caused by Mod of Transmitter Range W/O Revision of Calibr Procedure.Calibr Procedure Revised

Event date:
Report date:
3661979022R03 - NRC Website

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l On 2-9-79, with the reactor at 49% power, while performina surveillance on the dry-I I

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[ well equipment and floor drain sumps flow transmitters, it was discovered that they I 3

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were incorrectly calibrated and indicated higher than actual flow.

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specifications.

This incident has not previously occurred.

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40 41 42 43 44 47 cAUSE DESCRIPTION AND CORRECTIVE ACTIONS h gl The transmitter range _had been modified by a desian change to a range of 0-434 inches i

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Georgia Power Company Plant E. 1. Hatch Baxley, Georgia 31513 Reportable Occurrence Report No. 50-366/1979-22procedure was performed the error showed up.

The transmitters wer'e cal-ibrated to the correct range and the calibration procedure was revised to reflect the change made.

Prior to the completion of the Unit 2 pre-operational test program, proce-dures were reviewed for changes required by design change requests as a part of the pre-operational test program.

Subsequent tothe completion of the precperational test there was no mechanism to insure procedure review for Unit 2 design changes. Unit 2 design changes now use the plant design change procedure which receives procedure review per HHP-814 Procedure Review.

To assure that all Unit 2 (i.e. 2-yr. - #)' design changes are reviewed, the plant procedure review procedure, HNP-814, will be applied to all remain-I ing Unit 2 design changes.

Furthermore all Unit 2 design changes complet-ed subsequent to the completion of the precperational test will be reviewed I

using procedure HNP-814.

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