首页|中子活化反应核技术项目辐射环境影响研究

中子活化反应核技术项目辐射环境影响研究

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为科学准确地评价中子活化反应核技术项目运行时产生的辐射环境影响,以某中子发生器测井试验项目为例,使用基于蒙特卡洛方法的PHTIS软件进行中子发生器实际运行情况模拟.由蒙卡模拟结果,可以计算出中子活化后产生的感生放射性核素的比活度,判定被活化的部件是否需要当作放射性废物处置;计算出中子周围剂量率和活化核产生的γ射线剂量率,评价外照射所致人员年有效剂量,并与现场监测结果对比验证蒙卡模拟估算年有效剂量的可行性;利用绘制的实验室周围剂量率分布图确定辐射防护的关注点.为涉及中子活化反应的核技术项目的辐射环境影响分析与辐射防护提供借鉴.
Radiation Environmental Impact Study for Neutron Activation Reaction Nuclear Technology Project
In order to scientifically and accurately evaluate the radiation environmental impact during the operation of a neutron acti-vation nuclear technology project,a neutron generator logging test project was taken as an example.PHTIS software based on Monte Carlo method was used to simulate the actual operation of the neutron generator.According to the simulation results,the specific activity of the induced radionuclides produced after neutron activation can be calculated to determine whether the activated parts need to be disposed of as radioactive waste.The perineutron dose rate and γ-ray dose rate generated by activated nucleus were calculated,and the annual ef-fective dose caused by external exposure was evaluated.The feasibility of Monka simulation for estimating the annual effective dose was verified by comparing with the field monitoring results.Radiation protection concerns are determined by mapping the dose rate distribution around the laboratory.It provides reference for the radiation environmental impact analysis and radiation protection of nuclear technology utilization projects involving neutron activation reactions.

neutron activation reactionneutron generatorradiation environmental impactMonte Carlo calculation

赵连波、金浪屿

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核工业二〇三研究所,陕西 西安 710000

武汉市硚口区生态环境事务服务站,湖北 武汉 430000

中子活化反应 中子发生器 辐射环境影响 蒙特卡洛

2025

环境科学与管理
黑龙江省环境保护科学研究院

环境科学与管理

影响因子:0.681
ISSN:1673-1212
年,卷(期):2025.50(1)