The Development of simple classification method by nuclear components using -ray spectra

Hata, Haruhi   ; Tokizawa, Takayuki; Ohara, Yoshiyuki; Yokoyama, Kaoru; Sugitsue, Noritake

At Ningyo-toge Environmental Engineering Center, the decommissioning project of the nuclear facilities has been progressed. The facilities in Ningyo-toge were used for the research and the development for uranium exploration, refining, conversion and enrichment. By the kind of used uranium, the facilities are categorized to NORM source facility or nuclear fuel facility. These facilities have been used NORM source, which contains uranium progenies, refined natural uranium and recovered uranium, and the difference is occurred between the classes of nuclear components by the processes. For the practical treatment and disposal, it is important that the nuclide components classes will be characterized and set the specific activities of the classes appropriately. In this presentation, we report the development of simple classification method for nuclide components using machine learning by NaI spectra.