回收铀贫料容器辐射水平分析及防护建议

Analysis of Radiation Level and Protection Suggestion for Recuperated Uranium Depleted Material Containers

摘要: 我国目前正在大力推进闭式燃料循环，若对堆后铀进行再循环，将操作回收铀，需考虑回收铀贫料的放射性对工作人员的外照射影响。本文将分别对回收铀中各核素对于剂量的贡献及回收铀、天然铀贫料容器的表面辐射水平进行计算分析，并给出外照射防护建议。文中重点对U-238和U-232衰变子体对γ剂量率的影响进行了分析计算，并根据计算结果对回收铀的操作和贮存方式提出了防护建议。

Abstract: At present, China is vigorously promoting the closed fuel cycle. If the uranium is recycled after the reactor and the uranium will be recovered, it is necessary to consider the influence of the radioac-tivity of the depleted uranium material on the workers’ external radiation. In this paper, the con-tribution of each nuclide in the recovered uranium is calculated and analyzed respectively, and the suggestions for external radiation protection are given. The effects of U-238 and U-232 decay daughters on the gamma dose rate are analyzed and calculated, radiation protection recommenda-tions for the operation and storage methods of recovered uranium are proposed based on the cal-culation results.