Systematic analysis method for radioactive wastes generated from nuclear research facilities

Kameo, Yutaka ; Ishimori, Kenichiro ; Haraga, Tomoko   ; Shimada, Asako ; Katayama, Atsushi ; Nakashima, Mikio*; Takahashi, Kuniaki 

Analytical methods have been developed for simple and rapid determination of radioactive nuclides, which are selected as important nuclides for safety assessment of disposal of wastes generated from research facilities. We advanced the development of a high-efficiency non-destructive measurement technique for -ray emitting nuclides, simple and rapid methods for pretreatment of hard-to dissolve samples and subsequent radiochemical separations, and rapid determination methods for long-lived nuclides. In order to establish a system to analyze the important nuclides in various kinds of samples, actual radioactive wastes such as concentrated liquid waste, activated concrete, and metal pipes, were analyzed by the present method. The results showed that the present method was well suited for a rapid and simple determination of low-level radioactive wastes generated from research facilities.