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Appendix G: Hydrogen Control in Severe Accidents
Pages 337-340

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From page 337...
... within a few days after an accident. The inerting requirement was implemented in December 1981 as the first interim hydrogen rule for Mark I and Mark II reactors.1 Plants that 1  Thisresulted in an amendment to 10 CFR § 50.44 requiring inerted atmospheres in BWR Mark I and Mark II containments.
From page 338...
... safety issues arose from the Three Mile Island Action Plan and subsequent research on hydrogen combustion inside containments: • GSI-A48: Hydrogen Control Measures and Effects of Hydrogen Burns on Safety Equipment. Initiated by Three Mile Island Task Force findings and resolved in 1989 with changes to 10 CFR § 50.44 and results of research and testing programs.
From page 339...
... In the 1980s, researchers at Oak Ridge National Laboratory examined severe accidents in boiling water reactor plants and the mitigating role of reactor buildings (i.e., secondary containment) on fission product releases.
From page 340...
... The Natural Resources Defense Council considered a wide range of topics related to hydrogen explosions in severe accidents and issued a report giving their perspective on the issues (Leyse, 2014)

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