辐射防护2026，Vol.46Issue(2)：134-141,8.
主要核素关联法对某型低本底大物品污染监测仪的适用性研究
A study on the applicability of the leading nuclide correlation method to a low-background large-object radioactive contamination monitor
吕鑫盛 1郭英蕾 2李丹1
作者信息
- 1. 成都理工大学,成都 610059
- 2. 中广核同位素科技(绵阳)有限公司,四川 绵阳 621000
- 折叠
摘要
Abstract
This work evaluates the applicability of the Leading Nuclide Correlation(LNC)method to a specific low-background large-object radioactive contamination monitor,using the MCNP5 code.A MCNP model was developed to determine the key parameters required for the LNC method.Considering actual nuclear power plant conditions,the F8 tally was employed to calculate detector count rates across varied scenarios—including different materials,densities,filling fractions,and nuclide distributions.The activity values obtained from the LNC method and the equipment's built-in algorithm were then compared against the reference values.The results indicate that the relative deviation associated with the LNC method remained consistently within±15%across all experimental conditions,whereas the built-in algorithm yielded relative deviations as high as-77.5%under extreme scenarios,demonstrating the superior performance of the LNC method.This study confirms the technical applicability of the LNC method for clearance measurements of radioactive solid waste at nuclear power plants using this type of equipment.关键词
主要核素关联法/蒙特卡罗模拟/放射性固体废物/清洁解控/活度测量Key words
leading nuclide correlation method/monte carlo simulations/radioactive solid waste/clearance/activity measurement分类
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吕鑫盛,郭英蕾,李丹..主要核素关联法对某型低本底大物品污染监测仪的适用性研究[J].辐射防护,2026,46(2):134-141,8.
