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RO:on 730708,reactor scram causing increased reactor pressure & high neutron flux scram occurred.Caused by isolation of main steam line 12 due to closing of outside isolation valve.Relief valves operated to relieve pressure.

Accession Number: ML20090D404

Date Released: Monday, April 13, 2020

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• ML20090D400 - RO:on 730708,reactor scram causing increased reactor pressure & high neutron flux scram occurred.Caused by isolation of main steam line 12 due to closing of outside isolation valve.Relief valves operated to relieve pressure. (2 page(s), 8/1/1973)
• ML20090D405 - RO:on 730418,three main steam isolation valves failed to meet leakage criteria.Cause not stated.Leakage repaired. (2 page(s), 6/6/1973)