05000324/LER-1979-034-03, /03L-0 on 790510:while Performing PT 20.3,primary Containment Isolation Valve Local Leak Rate Test Containment Isolation Valves Would Not Seat & Hold Pressure.Caused by Valve Bushing Wear.Valves Dissassembled & Bushings Repl

/03L-0 on 790510:while Performing PT 20.3,primary Containment Isolation Valve Local Leak Rate Test Containment Isolation Valves Would Not Seat & Hold Pressure.Caused by Valve Bushing Wear.Valves Dissassembled & Bushings Replaced

ML19259C127
Person / Time
Site:	Brunswick
Issue date:	06/08/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19259C123	List: 05000324/LER-1979-034, Forwards LER 79-034/03L-0 05000324/LER-1979-034-03, /03L-0 on 790510:while Performing PT 20.3,primary Containment Isolation Valve Local Leak Rate Test Containment Isolation Valves Would Not Seat & Hold Pressure.Caused by Valve Bushing Wear.Valves Dissassembled & Bushings Repl
References
LER-79-034-03L-01, LER-79-34-3L-1, NUDOCS 7906120388
Download: ML19259C127 (1)

LER-1979-034, /03L-0 on 790510:while Performing PT 20.3,primary Containment Isolation Valve Local Leak Rate Test Containment Isolation Valves Would Not Seat & Hold Pressure.Caused by Valve Bushing Wear.Valves Dissassembled & Bushings Replaced

Event date:
Report date:
3241979034R03 - NRC Website

text

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3 LICENSEE EVENT REPORT CONTROL DLOCK: l l

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8 t,U 61 DOCK E T " 'WE E R 68 fa EVENT DATE n1 HEPORT DATE 80 EVENT DESCRIPTION AND PROBABL E CMSEQUENCES h o 2 l While performing normal operator surveillance on the control. panel. it was nOted thatI

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the drywell equipment drain recorder was drivinn downscale,_an_d the integrator was o

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40 41 ty 43 44 47 CAUSE DESCRIPTION AND CORREC if VE AC T!ONS h l The recorder motor drive amplifier transistor failed, and the flow transmitter elec,_j li o

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l trical zero shifted from 10.0 ma to 9.4 ma.

The transistor _was replaced, the flow I

j transmitter calibrated, and a loop calibration was performed.

The system was returned

,,3 l to service in a satisfactory condition.

Thi', is considered an isolated incident.

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8 80 LOSS OF 09 DAMAGE TO F ACILITY TYPE D E SC RIP TION 7QQQlQQ W@l NA i

9 8 9 10 80 155UEt DESCRIP TION 8 9 to r, R r> 9 80 ;;

A. C. Tollison, Jr.

919-457-6701

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