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Responds to 890717 request for NRC staff position on 10CFR50.44 hydrogen mitigation requirements.Use of ACAD sys could pose threat to plant for many possible beyond design basis events.Sys should be rendered inoperable.

Accession Number: ML17202V099

Date Released: Sunday, November 8, 2020

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• ML17202V098 - Responds to 890717 request for NRC staff position on 10CFR50.44 hydrogen mitigation requirements.Use of ACAD sys could pose threat to plant for many possible beyond design basis events.Sys should be rendered inoperable. (13 page(s), 11/6/1990)
• ML17202V100 - SE rejecting GE methodology for determining rates of generations of oxygen by radiolytic decomposition (NEDO-22155).Rept underpredicts generation of radiolytic hydrogen for boiling/nonboiling cases. (6 page(s), 7/6/1989)