乏燃料干法后处理工艺核材料衡算起点分析OA

The spent fuel of fast reactor is treated by pyroprocessing,which is different from aqueous reprocessing in separation processes,operational modes and material states.These characteristics determine that nuclear material accountancy is different from conventional aqueous reprocessing methods,making it difficult to apply the management models developed for aqueous processes.According to the requirements of national nuclear materials control requirements,it is necessary to research nuclear material accountancy for pyroprocessing.Based on the conceptual process of pyroprocessing in China,process characteristics and material characteristics are analyzed.Considering the specific features of front-end process for various spent fuel types,and balancing nuclear material balance area division principles with accounting measurement requirements,alternative accounting starting points and applicable measurement methods are proposed.This research provides basis for further nuclear material accounting system design of pyroprocessing facility.