某同位素产业园区大气环境放射性容量估算  

Estimation of atmospheric environmental radiation capacity in an isotope industrial park

作　　者：孙朋 许慧萍[1] 黄娟 严源[1] 伏亚萍 SUN Peng;XU Huiping;HUANG Juan;YAN Yuan;FU Yaping(China Institute of Atomic Energy,Beijing 102413 China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《中国辐射卫生》2023年第3期303-310,共8页Chinese Journal of Radiological Health

摘　　要：目的研究和估算同位素产业园区公众剂量约束值和大气环境放射性容量,为同位素产业园区放射性流出物排放管理提供依据。方法收集某同位素产业园区的自然环境资料、气象数据、人口分布及饮食习惯数据,以及放射性气载流出物排放源项等,基于自然环境辐射危险度水平确定同位素产业园区公众剂量约束值,采用全途径法估算产业园区大气环境放射性容量。结果确定同位素产业园区公众剂量约束值为0.2 mSv/a;规划末期气载流出物排放对公众所致最大个人有效剂量为1.07×10-6Sv/a,占公众剂量约束值的0.54%;气载放射性核素排放量的环境辐射容量占比为0.04%~4.34%。结论本研究确定的产业园区公众剂量约束值可作为区域大气环境放射性总容量,对其气态放射性流出物排放进行约束;采用全途径法,考虑各放射性核素排放的综合影响,估算各放射性核素的环境放射性容量,适合产业园区同位素生产企业的控制和管理。Objective To study and estimate the public dose constraint and the atmospheric radiation capacity of an isotope industrial park,and to provide a basis for management of radioactive effluent discharge in isotope industrial parks.Methods We collected the natural environment data,meteorological data,and population distribution and dietary data as well as the source terms of radioactive airborne effluents of an isotope industrial park.The public dose constraint value of the isotope industrial park was determined based on the natural environmental radiation hazard level.The atmospheric environmental radiation capacity of the industrial park was estimated by the all-pathways method.Results The public dose constraint value of the industrial park was 0.2 mSv/a.At the end of industrial park planning,the maximum individual effective dose to the public caused by airborne effluent discharge was 1.07×10−6 Sv/a,which accounted for 0.54%of the public dose constraint value.The proportions of discharges of airborne radionuclides to respective environmental radiation capacities ranged from 0.04%to 4.34%.Conclusion The determined public dose constraint value of the isotope industrial park can be used as the total radiation capacity of the regional atmospheric environment to constrain the discharge of radioactive effluents.The environmental radiation capacity of each radionuclide can be estimated by the all-pathways method considering the comprehensive impact of radionuclide discharges,which is suitable for the control and management of isotope production enterprises in industrial parks.

关 键 词：同位素产业园 大气环境放射性容量 全途径法 

分 类 号：X591[环境科学与工程—环境工程]