Treatments of radioactive waste solutions generated in a hot laboratory of Japan Atomic Energy Agency

Watanabe, So  ; Ogi, Hiromichi*; Arai, Yoichi  ; Aihara, Haruka   ; Shibata, Atsuhiro  ; Nomura, Kazunori  

Chemical Processing Facility (CPF) was constructed in 1980 in Nuclear Fuel Engineering Laboratories of Japan Atomic Energy Agency (JAEA) for researches on reprocessing of spent fast reactor (FR) fuels and on vitrification process of high level radioactive liquid wastes. More than 30 years experimental and analytical activities inside the hot cells and glove boxes have produced plenty amount of radioactive liquid wastes. The solutions containing reactive chemical compounds have been temporarily stored inside the facility. We have started systematic investigation on safety treatments of the radioactive waste solution stored in the CPF from 2015, and several kinds of the solutions generated by the experiments have been successfully processed inside the hot cell and residual solutions were transferred into the tanks.