05000366/LER-1980-072-03, /03L-0:on 800425,while Performing Surveillance Procedure HNP-2-3307,contact 2 Failed to Actuate at Set Point.Caused by Shorted Switch Inside Instrument Case.Switch Was Replaced

/03L-0:on 800425,while Performing Surveillance Procedure HNP-2-3307,contact 2 Failed to Actuate at Set Point.Caused by Shorted Switch Inside Instrument Case.Switch Was Replaced

ML19309H601
Person / Time
Site:	Hatch
Issue date:	05/05/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19309H594	List: 05000366/LER-1980-072, Forwards LER 80-072/03L-0 05000366/LER-1980-072-03, /03L-0:on 800425,while Performing Surveillance Procedure HNP-2-3307,contact 2 Failed to Actuate at Set Point.Caused by Shorted Switch Inside Instrument Case.Switch Was Replaced
References
LER-80-072-03L, LER-80-72-3L, NUDOCS 8005130552
Download: ML19309H601 (2)

LER-1980-072, /03L-0:on 800425,while Performing Surveillance Procedure HNP-2-3307,contact 2 Failed to Actuate at Set Point.Caused by Shorted Switch Inside Instrument Case.Switch Was Replaced

Event date:
Report date:
3661980072R03 - NRC Website

text

48.0. NUCLEAR RECULATCr.Y CoMM,SSisN NRC FORM 364

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76 REPOMT D ATE SG EVENT oESCRIPTao*4 AND pro 8 ABLE CONSEQUENCES h

'< lith the t eactor in the run mode and increasing in pcwer, while surveil-1 8l 0 3 l lance procedure HNP-2-3307, HPCI Steam Line Delta P Instrument FT&C, was being perfomed on 2E41-N004, it was found that contact f2 failed to actu-l 1014] I ate at its setpoint of 190 d5" H 0.

No probable consequences would have l

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happened because the redundant switch 2E41-N005 was still cperable. The l

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lilOi l After investigating the problem, it was found that the switch had shorted I

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one and recalibra+.ed per HNP-2-5202 Barton 288A and 2ESA Delta P Indicator l

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Switch Calibration. HNP-2-3307, HPCI Steam Line Delta IP Instrument FT&C,

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NARRATIVE

REPORT Georgia Power Company Plant E. I. Hatch f

Baxley, Georgia 31513 Reportable Occurrence Report No. 50-366/1980-072.

With the reactor in the run mode and power level being increased, Surveillan procedure HNP-2-3307, HPCI Steam Line Delta Pressure Instrument Functional Test and Calibration, was being performed on 2E41-N004 actuate at its setpoint of 190 I " H 0.

S Switch ir2 failed to because the redundant switch 2E41-N005 was still operable.No consequences w 2

. repetitive event.

This is a non-The health and safety of the general public was not affected.

had shorted to ground inside of the instrument case.After a th with a new one and recalibrated per HNP-2-5202, Barton Model 2S8A and 269 Delta Pressure Indicator Switch Calibration procedure.

perfomed again with satisfactory results.

HNP-2-3307 was No inherent problems were found during the generic review.

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