05000325/LER-1979-034-03, /03L-0 on 790510:drywell Equipment Drain Recorder Was Driving Downscale & Integrator Was Inoperative During Performance of Normal Operator Surveillance on Control Panel.Caused by Motor Drive Amplifier Transistor Failure

/03L-0 on 790510:drywell Equipment Drain Recorder Was Driving Downscale & Integrator Was Inoperative During Performance of Normal Operator Surveillance on Control Panel.Caused by Motor Drive Amplifier Transistor Failure

ML19269D658
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
ML19269D654	List: 05000325/LER-1979-034, Forwards LER 79-034/03L-0 05000325/LER-1979-034-03, /03L-0 on 790510:drywell Equipment Drain Recorder Was Driving Downscale & Integrator Was Inoperative During Performance of Normal Operator Surveillance on Control Panel.Caused by Motor Drive Amplifier Transistor Failure
References
LER-79-034-03L, LER-79-34-3L, NUDOCS 7906110192
Download: ML19269D658 (1)

LER-1979-034, /03L-0 on 790510:drywell Equipment Drain Recorder Was Driving Downscale & Integrator Was Inoperative During Performance of Normal Operator Surveillance on Control Panel.Caused by Motor Drive Amplifier Transistor Failure

Event date:
Report date:
3251979034R03 - NRC Website

text

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'l HE POR T D AT E 80 EVENT DESCRIPTION AND PROBABI F CONSEQUENCES h While performing normal _oterator surveillance on the copitolaanel. It was noted thatl o

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JJ JS bi 31 40 di 42 43 44 47 CAUSE C'ESCRIPTION AND CORREC Y tvE AcilONS l The recorder motor drive amplifier transistor failed, and the_ flow transmitter elec-j fi O

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l trical zero shifted from 10.0 ma to 9.4 ma.

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