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Abnormal Occurrence 50-289/75-12:on 750421,reactor bldg emergency cooling river water pump failed to start on automatic signal.Caused by component failure of intermittent contact on control room switch.

Accession Number: ML19210A220

Date Released: Monday, August 12, 2019

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• ML19210A219 - Abnormal Occurrence 50-289/75-12:on 750421,reactor bldg emergency cooling river water pump failed to start on automatic signal.Caused by component failure of intermittent contact on control room switch. (4 page(s), 5/1/1975)
• ML19210A223 - Abnormal Occurrence 75-12:on 750421,during high & low pressure injection surveillance test,emergency cooling river pump failed to start on signal.Redundant pump operated successfully.Cause of failure not yet determined. (1 page(s), 4/22/1975)