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LER 79-023/03L-0 on 790724:during surveillance test,diesel generator 1 output breaker failed to close when control switch was actuated.Caused by sticking pinion on air motor. Pinion assembly cleaned,exercised & satisfactorily tested.

Accession Number: ML19207B453

Date Released: Friday, August 9, 2019

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• ML19207B452 - LER 79-023/03L-0 on 790724:during surveillance test,diesel generator 1 output breaker failed to close when control switch was actuated.Caused by sticking pinion on air motor. Pinion assembly cleaned,exercised & satisfactorily tested. (1 page(s), 8/23/1979)
• ML19207B458 - LER 79-025/03L-0 on 790624:during records review,biasing circuit for channel 2 temp change signal summator produced output signal setpoint approx 25 degrees too low. Caused by failure of instrument loop signal summator. (1 page(s), 8/23/1979)