JRODOS模拟核事故时核素扩散及剂量时空分布  

Simulation of Nuclide Dispersion and Spatial-Temporal Distribution of Dose During Accident by JRODOS

作　　者：郭瑞萍 岳峰 郭猜 郜建伟 王瑞英 李雯婷 GUO Ruiping;YUE Feng;GUO Cai;GAO Jianwei;WANG Ruiying;LI Wenting(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》2024年第1期77-85,共9页Nuclear Electronics & Detection Technology

基　　金：生态环境部核与辐射事故应急项目(审评2111)。

摘　　要：核事故时核素扩散范围和造成的辐射剂量是核电厂事故应急措施制定的重要参考,利用JRODOS软件模拟了不同气象源和大气扩散模型对核电厂核素浓度和辐射剂量时空分布的影响。结果表明:WRF气象场情景下核素的扩散范围广,FNL气象场情景下核素浓度和有效剂量区域均值较高。不同大气扩散模型中LASAT模型模拟的有效剂量最高。这为核事故后果评价数据来源和大气扩散模型选择提供了依据。The range of nuclide dispersion and radiation dose during nuclear accident is an important reference for making emergency measures for nuclear power plant accidents.JRODOS software was used to simulate the influence of different meteorological sources and atmosphere dispersion models on the spatial-temporal distribution of radionuclide concentration and radiation dose in nuclear power plant.The results show that the nuclide dispersion range is wide under the WRF scenario,but the average nuclide concentration and effective dose under the FNL scenario are higher.Under different atmosphere dispersion models scenarios,the effective dose caused by nuclear accident simulated by LASAT model is highest.It can provide the reference for the selection of data source and atmosphere dispersion model of nuclear accident consequence evaluation.

关 键 词：气象驱动场 JRODOS 大气扩散模型 有效剂量 

分 类 号：TL72[核科学技术—辐射防护及环境保护]