民用天然气燃烧所致公众内照射剂量估算  

Public Internal Dose Estimation for Civil Natural Gas Combustion

作　　者：杨洁[1] 赵杨军[1] 廉冰[1] 王彦[1] YANG Jie;ZHAO Yang-jun;LIAN Bing;WANG Yan(China Institute of Radiation Protect,Taiyuan 030006,China)

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《核电子学与探测技术》2019年第5期578-581,共4页Nuclear Electronics & Detection Technology

基　　金：核设施、核基地放射性污染防治项目(089031403-HS14132)资助。

摘　　要：为了定量评价民用天然气燃烧所致公众辐射剂量,对国内外天然气产业链的放射性水平进行了广泛调研,发现国内外气田(井)中氡浓度监测结果波动性较大,变化范围为5~2.0×10^5 Bq/m^3,其主要差异性来自气田地质背景不同、油气产业链环节不同.采用民用燃气的监测浓度作为源项输入,定量估算了室内天然气燃烧放射性核素^222Rn,^210Po,^210Pb所致公众辐射剂量评价结果显示室内天然气燃烧所致公众辐射剂量很小,为10^-6 Sv/a,关键核素为222Rn.建议我国在开展汹气产业链的放射性水平普查工作时,可重点关注辐射水平较高的开采、生产和输运环节.In order to quantitatively evaluate the public radiation dose caused by civil natural gas combustion,this paper has conducted extensive research on the radioactivity level of natural gas industry chain at home and abroad,and found that the monitoring results of radon concentration in gas fields(wells)at home and abroad are highly volatile,with a variation range of 5~2.0×10^5 Bq/m^3,the main difference comes from diflerent geological backgrounds in gas fields and diflerent links in oil and gas industry chain.Using the monitoring concentration of civil gas as the source input,the public radiation dose caused by indoor natural gas burning radionuclide ^222 Rn,^210Po,^210Pb was quantitatively estimated.The evaluation results show that the public radiation dose caused by indoor natural gas combustion is very small,which is 10^-6Sv/a and the main nuclides is 222Rn.This paper suggests that when conducting the radioactive level survey of the oil and gas industry chain,China can focus on the mining,production and transport links which exits higher radiation levels.

关 键 词：天然气 核素活度浓度 剂量 

分 类 号：X591[环境科学与工程—环境工程]