Implementation Challenges and Proposed Suggestions for Nuclear Material Accountancy Management in Spent Fuel Reprocessing Plant

Abstract

Abstract Nuclear material license holder should develop a nuclear material accounting management system and achieve closed balance accountancy. According to regulations requirements, nuclear material accountancy implementation is based on physical inventory and material measurement. Generally, the spent fuel reprocessing plant operates uninterrupted, its annual throughput of nuclear materials is huge, there are different kinds of measurement and analysis techniques configured combing the reprocessing process. So the closed balance approach of nuclear materials accountancy is a great challenge for reprocessing plant holders. In order to improve the accuracy and reliability of nuclear material, enhance the timeliness of abnormal detection, near-real time accounting prospect of spent fuel reprocessing plant was researched. In this paper, the crucial aspects affecting closed balance accountancy was discussed, the factors such as the head-end receiver-shipper inventory difference, the on-line process monitoring accuracy, the applicability of the international target value of nuclear material measurement uncertainty, and the nuclear material balance model of reprocessing plants. As summarized, proposed suggestions and solutions for nuclear material balance in spent fuel reprocessing plant was put forward on the end of the paper.