[2C09-13] Decommissioning Technology for Fukushima 2

[2C10] Development status of hydrogen dispersion and combustion simulation in a storage container for fuel debris

*Atsuhiko Terada¹, Thwe Thwe Aung¹, Ryutaro Hino¹, Ryuji Nagaishi¹ (1. Japan Atomic Energy Agency)

Keywords:radioactive waste, fuel debris, long strorage, strage container, computational fluid dynamics (CFD), Hydrogen dispersion, hydrogen combustion, trial simulation

To improve a hydrogen safety management technology for long term storage of radioactive wastes such as fuel debris retrieved in the decommissioning of Fukushima Daiichi Nuclear Power Station, a hydrogen behavior simulation code for analyzing its dispersion and combustion has been developing with considering inert gas atmosphere containing steam assumed in a storage container. Trial simulation results of hydrogen dispersion and combustion are reported to understand its steam effects.