Study for light water reactor with rock-like oxide fuel, 1; Scenario for direct disposal of rock-like oxide fuel

Nishihara, Kenji  ; Iwamura, Takamichi*; Akie, Hiroshi  ; Shirasu, Noriko  

Use of Rock-like oxide (ROX) fuel is proposed for the purpose of reduction of plutonium amount in the case of gradually stopping nuclear power generation without introducing fast breeder reactors. In this study, the mass flow and repository of three scenarios that is once-through, Pu-thermal and ROX, was analysed. As the result, amount and attractiveness as nuclear weapon of Pu was decreased in the ROX scenario in comparison with the once-through scenario, although the repository size was not reduced.