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Forwards "Thermal Stress Evaluation of Reactor Vessel During Cooldown Transient." Operator shutting off excess flow trip valves to terminate transient acceptable.Operators should be alerted to possibility of steam dump valve failing to close.

Accession Number: ML20090C594

Date Released: Saturday, October 26, 2024

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• ML20090C591 - Forwards "Thermal Stress Evaluation of Reactor Vessel During Cooldown Transient." Operator shutting off excess flow trip valves to terminate transient acceptable.Operators should be alerted to possibility of steam dump valve failing to close. (2 page(s), 1/5/1971)
• ML20090C596 - "Thermal Stress Evaluation of Reactor Vessel During Cooldown Transient." (29 page(s), 11/30/1970)
• ML20090C607 - Forwards evaluation of 701012 cooldown transient. Structural integrity & fatigue life of reactor vessel not affected. (4 page(s), 12/29/1971)
• ML20090C610 - Forwards evaluation of 701012 automatic plant trip & RCS cooldown to 502 F.No detrimental effects to reactor vessel or sys boundaries resulted from occurrence. (3 page(s), 11/4/1970)
• ML20090C623 - "Div of Compliance Monthly Rept for Oct 1970." (1 page(s), 10/31/1970)