R&D on nitride fuel cycle technologies for MA transmutation in the aspects of safety and economy, 1; Introduction of overall plan

Takano, Masahide ; Hayashi, Hirokazu ; Murakami, Tsuyoshi*; Arima, Tatsumi*

The overall plan of "R&D on Nitride Fuel Cycle Technologies for MA Transmutation in the Aspects of Safety and Economy" entrusted by MEXT (FY 2017-2020) is introduced in this presentation. The main subjects are (1) fuel fabrication technologies, (2) fuel behavior during transmutation, and (3) pyrochemical reprocessing technologies. In the subject (1), application of sol-gel process and economical use of N-15 enriched nitrogen gas will be treated. Application of laser-heating technique for melting point measurement to the nitride will be examined in the subject (2), as well as the compatibility between the nitride and the candidate cladding material, and He release behavior at high temperature. In the subject (3), the chemical dissolution of the nitride into molten salt will be examined as a potential, alternative technique to the electrolysis.