*Tsutomu Sato¹, Misato Shimbashi^2,3, Naoki Fujii⁴, Minoru Yamakawa⁴, Takeshi Kasama⁵, Tsubasa Otake¹ (1.Faculty of Engineering, Hokkaido University, 2.Graduate School of Engineering, Hokkaido University, 3.Central Research Institute of Electric Power Industry, 4.Radioactive Waste Management Funding and Research Center, 5.Technical University of Denmark)