核电厂区域气象场对事故剂量影响模拟评估  

Simulation Assessment on the Influence of Regional Scale Meteorological Field on Accident Dose in a Nuclear Power Plant

作　　者：郭瑞萍 岳峰 乔清党 李雯婷 张少君 王瑞英 GUO Rui-ping;YUE Feng;QIAO Qing-dang;LI Wen-ting;ZHANG Shao-jun;WANG Rui-ying(Nuclear and Radiation Safety Center,Ministry of Ecology and Environment,Beijing 102445,China)

机构地区：[1]生态环境部核与辐射安全中心,北京102445

出　　处：《核电子学与探测技术》2021年第2期241-245,共5页Nuclear Electronics & Detection Technology

基　　金：公益性行业科研专项资金(201309058)。

摘　　要：核电厂事故后果评价是辐射防护和事故应急响应关注的重点问题,利用长距离辐射后果评价软件(RADCON)评估了不同季节气象预报场对核电厂放射性核素扩散轨迹和辐射剂量的影响。结果表明:受风场变化的影响,秋季核素从释放点向西南方向扩散,对陆地区域影响较大;冬季和春季核素从释放点向东北方向扩散,对陆地区域影响较小。为核事故紧急防护行动措施实施提供重要参考。Accident consequence evaluation of nuclear power plant is the key problem of radiation protection and emergency response.The long-distance radiation consequence evaluation software(RADCON)was used to simulate the effects of different weather forecasting fields in different seasons on radionuclide diffusion trajectories and radiation doses in nuclear power plants.The results show that due to influence of the variation of wind field,radionuclides diffuse from the release point to the southwest,which has a great influence on the land area,when accident happened in autumn.However,that diffuse from the release point to the northeast direction,which has little influence on the land area,when accident happened in winter and spring.It provides an important reference for the implementation of nuclear emergency protection measures.

关 键 词：源项 RADCON 气象预报场 事故后果 

分 类 号：TL72[核科学技术—辐射防护及环境保护]