05000366/LER-1980-121-01, /01T-0:on 800813,w/unit at 2412 MW While Performing HNP-2-3102,pressure Switches Actuated Out of Tolerance.Caused by Setpoint Drift.Switches Recalibr. HNP-2-3102 Performed Satisfactorily

/01T-0:on 800813,w/unit at 2412 MW While Performing HNP-2-3102,pressure Switches Actuated Out of Tolerance.Caused by Setpoint Drift.Switches Recalibr. HNP-2-3102 Performed Satisfactorily

ML19344E016
Person / Time
Site:	Hatch
Issue date:	08/19/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19344E009	List: 05000366/LER-1980-121-01, /01T-0:on 800813,w/unit at 2412 MW While Performing HNP-2-3102,pressure Switches Actuated Out of Tolerance.Caused by Setpoint Drift.Switches Recalibr. HNP-2-3102 Performed Satisfactorily
References
LER-80-121-01T, LER-80-121-1T, NUDOCS 8008260521
Download: ML19344E016 (2)

LER-1980-121, /01T-0:on 800813,w/unit at 2412 MW While Performing HNP-2-3102,pressure Switches Actuated Out of Tolerance.Caused by Setpoint Drift.Switches Recalibr. HNP-2-3102 Performed Satisfactorily

Event date:
Report date:
3661980121R01 - NRC Website

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8 OU Gl DOCKET NUVBEn 63 UJ EVENT DATE 74 7b HEPORT DAI E 80 EVENT DESCRIPTION AND PRO 54AOLE CONSEQUENCES Mith the Unit at 2412 M'it while per oming HNP-2-3102, Reactor Pressure Shut-l g., l down coolinC mode, pressure switchen 2B31-N01CA&B actuated outside the Tech

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2B31-N018A switch #1 167 PSIG INC., switch g 3

1. 2 165 PSIG INC., 2B31-U018B switch #1 166 PSIG INC., switch #2 165 PSIG INC.

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Public health and nafety ucre not affected by this event.

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NARR5TIVE REPORT Ceorgia Power Company Plant E. I. Ilatch Bax1cy, Ccorgia 31513 Reportabic Occurrence Ecport No. 50-366/1980-121 on August 13, 1980, with the Unit in the run code at 99% power and perforning IIUP-2-3102, reactcr high pressure shut don cooling node, reactor pressure switches 2B31-5016AtB actuated outside the Tech Spec limit of i 135 PSIG +25 o

PSIG head correction (160 PSIG II;C.).

The actuation points for the switches uere as folloun:

2B31-:013A suitch fl 167 PSIG II:C., cultch F2 165 PSIG INC.; 2B31-::0103 cultch fl 166 P3IG 1U0.,

suitch (2 165 PSIG Inc.

The cauce of the cuitches being out of tolerance una cetpoing drift. All nuitchen verc rocclibrated per In:P-2-5279, Bartsdale Pressure witch calibration.

III:P-2-3102, reactor high prescure shutdown cooling r ade, was ther. perfer.med satic-factorily.

This is a repetitive event as last reported on LER 50-J66/1900-80. Unit I uscs the uane type Barksdale Pressure Switch in this applicatica.

A generic revicu revealed no inherent problems with the cuitch.

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