冬夏海阳核电厂核素在近海域的迁移路径和浓度分布研究  

Study on Radionuclide Migration Path and Concentration Distribution in Coastal Waters of Haiyang Nuclear Power Plant in Winter and Summer

作　　者：李子超[1] 周涛 司广成[3] 张博雅 Li Zichao;Zhou Tao;Si Guangcheng;Zhang Boya(School of Nuclear Science and Engineering,North China Electric Power University,Beijing,102206,China;School of Energy and Environment Southeast University,Nanjing,211096,China;Institute of Oceanology,Chinese Academy of Sciences,Qingdao,Shandong,266071,China)

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]东南大学能源与环境学院,南京211096 [3]中国科学院海洋研究所,山东青岛266071

出　　处：《核动力工程》2020年第4期135-140,共6页Nuclear Power Engineering

基　　金：核电站泄漏放射性核素在邻近海域的动态迁移和衰减规律研究(2016YFC1402501)。

摘　　要：为制定核电厂发生核泄漏事故应急响应预案,需要快速预测事故后放射性核素在近岸的迁移路径和浓度分布。本文首先根据实时气象数据,基于拉格朗日方法和欧拉方法,建立了核电厂近海域核素扩散模型,并验证了该模型的可靠性;其次,用该模型对比分析了夏季和冬季海阳核电厂核素的迁移路径和浓度分布。分析结果表明,夏季受东南风和洋流的影响,海阳核电厂核素主要沿着海岸线向东迁移;冬季受西北风和洋流的影响,核素首先沿着海岸线向东迁移,然后快速向东南迁移;无论冬季还是夏季,5d后核电厂近海域核素浓度比释放总量降低约9个数量级,10 d后核素浓度比释放总量降低约10个数量级。In order to formulate the emergency response plan for the nuclear leakage accident in Haiyang Nuclear Power Plant, it is necessary to quickly predict the migration path and concentration distribution of the radio-nuclides in coastal waters. Firstly according to the real-time meteorological data, the radionuclide diffusion model of the nuclear power plant was established based on the methods of Lagrange and Euler respectively, and then the reliability of the model was verified. Secondly the radionuclide migration path and concentration distribution in summer and winter were analyzed. The results show that, due to the influence of the southeast wind and the ocean current in summer, the radio-nuclides of Haiyang Nuclear Power Plant migrate mainly to the northwest along the coastline. Due to the northwest wind and the ocean current in winter, the radio-nuclides migrate mainly to the east along the coastline, and then migrate to the southeast rapidly. In winter and summer, the radionuclide concentration in the coastal waters of the nuclear power plant decreases by about 9 orders of magnitude than the release amount after 5 days, and the radionuclide concentration decreases by about 10 orders of magnitude than the release amount after 10 days.

关 键 词：核泄漏事故 季节 核素 近海域 迁移 

分 类 号：TL732[核科学技术—辐射防护及环境保护] X591[环境科学与工程—环境工程]