Analytical Studies on Prevention of Hydrogen Accumulation in a Room using Catalyst:

Effects of catalyst shape conditions

Abstract

With a storage containing wet radioactive waste such as fuel debris, it is important to reduce the risk of explosion and combustion due to hydrogen generated by radiolysis of water. This study, as a part of the development of simulation technologies for verification of reduction countermeasures and proposal of new countermeasures, conducted a trial simulation of the hydrogen concentration behavior in a room installed the hydrogen recombination catalyst. The simulation using a CFD code focuses on reduction effect of hydrogen concentration by reducing to flow resistance of catalyst. It was found that the hydrogen concentration distribution was affected by formation of a circulating flow in a room by catalyst.