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Forwards safety evaluation supporting response to Generic Ltr 81-21 re reactor vessel upper head steam formation during natural circulation cooldown.Cooldown to DHR sys actuation can be performed in 8 h w/o void formation.

Accession Number: ML20129B877

Date Released: Friday, May 22, 2020

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• ML20129B872 - Forwards safety evaluation supporting response to Generic Ltr 81-21 re reactor vessel upper head steam formation during natural circulation cooldown.Cooldown to DHR sys actuation can be performed in 8 h w/o void formation. (2 page(s), 7/11/1985)
• ML20129B949 - Safety evaluation supporting response to Generic Ltr 81-21 re reactor vessel upper head steam formation during natural circulation cooldown. (4 page(s), 7/11/1985)