过滤器中放射性核素总量γ无损测量方法研究

Study on Non-destructive Analysis Method of the Residual of Radioactive Nuclides in the Filter

准确评估放射性工作场所整体拆除的空气过滤器中的放射性核素滞留量,对核设施退役源项调查、过滤器废物的处理处置具有重要意义。论文介绍了放射性工作场所整体拆除过滤器中放射性核素滞留量的γ无损测量及评估方法,整体测量分析结果与对过滤器初、次级的单独测量结果之和基本吻合。实验结果表明,整体测量两级过滤器组件总放射性核素残留量结果的不确定度不大于21%,可满足相关规定和要求,可为过滤器废物的整体处置提供重要依据。

It has important significance to determine the residual of radioactive nuclide in the waste of whole disassembled filter for the treatment of the filter.In this paper,the determining method of the residual of radioactive nuclide in the whole disassembled filter has been described in detail,the determining result of whole disassembled filter accord with the sum of the first level filter and the second level filter.It shows that the determining result of whole disassembled filter is reliable,and the result should provide important foundation for the whole treatment of the waste of filter.