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Abnormal Occurrence 50-289/75-28:on 750823,MS-V-13A valve turbine drive emergency feed pump failed to remain open. Caused by control circuit pressure switch failure,due possibly to high ambient temp.

Accession Number: ML19210A182

Date Released: Monday, August 12, 2019

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• ML19210A181 - Abnormal Occurrence 50-289/75-28:on 750823,MS-V-13A valve turbine drive emergency feed pump failed to remain open. Caused by control circuit pressure switch failure,due possibly to high ambient temp. (4 page(s), 9/2/1975)
• ML19210A184 - Abnormal Occurrence 75-28:on 750820,during test of turbine drive emergency feed pump,associated valve failed to remain open.Caused by failed pressure switch. (2 page(s), 8/23/1975)