05000366/LER-1979-115-03, /03L-0:on 791030,contact 2 of 2E41-NOO4 Actuated at Water Level Greater than Tech Specs Limit.Caused by Instrument Drift.Instrument Recalibr & Procedure HNP-2-3307 Performed Satisfactorily

/03L-0:on 791030,contact 2 of 2E41-NOO4 Actuated at Water Level Greater than Tech Specs Limit.Caused by Instrument Drift.Instrument Recalibr & Procedure HNP-2-3307 Performed Satisfactorily

ML19210D309
Person / Time
Site:	Hatch
Issue date:	11/19/1979
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210D306	List: 05000366/LER-1979-115, Forwards LER 79-115/03L-0 05000366/LER-1979-115-03, /03L-0:on 791030,contact 2 of 2E41-NOO4 Actuated at Water Level Greater than Tech Specs Limit.Caused by Instrument Drift.Instrument Recalibr & Procedure HNP-2-3307 Performed Satisfactorily
References
LER-79-115-03L, LER-79-115-3L, NUDOCS 7911260287
Download: ML19210D309 (1)

LER-1979-115, /03L-0:on 791030,contact 2 of 2E41-NOO4 Actuated at Water Level Greater than Tech Specs Limit.Caused by Instrument Drift.Instrument Recalibr & Procedure HNP-2-3307 Performed Satisfactorily

Event date:
Report date:
3661979115R03 - NRC Website

text

NRC FORM 366 U.S. NUCL E AR REGULATORY COMMISSION 87 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l~l l

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

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60 61 DOCKET NUVBER 63 69 EVENT OATE 14 7b REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l While performing surveillance procedure HNP-2-3307, HPCI Steam Line dP Functional l

o 3 l Test and Calibration, the No. 2 contact of 2E41-N004 actuated at +200 inches of l

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water. The Tech Spec limit is 5+196 inches of water for this instrument. The lO l3l l No. I contact of 2E41-N004 actuated within tolerance. Both contacts of 2E41-N005 l

O o l in the other channel were found to be set properly. Therefore, thekiPCIsystem l

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would have operated satisfactorily. There was no effect on plant personnel, equip-l o

a i ment or the environment. A similar occurrence was reported on LER 2-79-83.

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40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1 O l The cause has been attributed to instrument drift. The instrument was recalibrated l l t li ] ]

and surveillance procedure HNP-2-3307 was performed satisfactorily.

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