[1M14-19] Criticality Safety 2

[1M17] Criticality control technique development for Fukushima Daiichi fuel debris

(48)Effect of insoluble neutron absorbers on pH of a solution and hydrogen generation

*Ryo Ishibashi^1,3, Kazuya Ishii^1,3, Toshiyuki Fujita^2,3, Yuta Shindo^2,3, Yuuichi Morimoto^1,3 (1. Hitachi-GE Nuclear Energy, Ltd., 2. Toshiba Energy Systems & Solutions, Co, 3. International Research Institute for Nuclear Decommissioning)

Keywords:Fukushima-Daiichi NPP SA, Fuel debris, Neutron absorber , Criticality prevention technology, Gamma-ray irradiation

For the purpose of removing fuel debris from the Fukushima-Daiichi Nuclear Power Plants safely and smoothly, a criticality prevention technology using insoluble neutron absorbers is being developed. Evaluation results regarding effect of insoluble neutron absorbers on pH of a solution and hydrogen generation are reported.