Some advanced technologies for low-level radioactive waste treatment in JAEA

Meguro, Yoshihiro  ; Tomioka, Osamu ; Yamaguchi, Hiromi ; Takahashi, Kuniaki 

In order to lower the cost of the disposal of low-level radioactive waste, several waste treatment technologies, such as reduction of radioactive concentration in the waste, reduction in amount of the waste, and removal of harmful materials for the disposal, are essential. The authors have developed four waste treatment technologies; these are a supercritical CO fluid decontamination method, a calcination method, a chemical reductive denitration method, and a steam reforming method in JAEA. It was demonstrated that these methods showed promise for the waste treatment.