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RO:on 720228,unit tripped offline due to malfunction in continuous power supply.Malfunction caused feedwater upset & reactor low water level scram.Caused by transfer of motor generator set drive from ac to dc.

Accession Number: ML20090D621

Date Released: Tuesday, March 2, 2021

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• ML20090D618 - RO:on 720228,unit tripped offline due to malfunction in continuous power supply.Malfunction caused feedwater upset & reactor low water level scram.Caused by transfer of motor generator set drive from ac to dc. (5 page(s), 4/18/1972)
• ML20090D623 - Forwards Inquiry Rept 50-220/72-01 on 720309 & 17 re reactor pressure controlled by use of relief valves. (1 page(s), 3/17/1972)
• ML20090D626 - Inquiry Rept 50-220/72-01 on 720309 & 17 re reactor pressure controlled by use of relief valves. (1 page(s), 3/17/1972)