摘要
大多数石煤含有较高天然放射性核素,石煤的开采和利用有可能使石煤矿区环境放射性水平升高,使居住或工作在碳化砖房的居民、上作人员和石煤矿工的年附加有效剂量增加。对湖北、湖南、江西、浙江和安徽5省石煤矿区居民年附加有效剂量的调查结果表明:碳化砖房居民、碳化砖房工作人员、露天矿工和矿井的工人的年附加有效剂量范围分别为0.51—11.9、0.12—3.54、0.11—1.7和8.2-71mSv,平均值分别为3.8、1.0、0.56和40mSv;部分碳化砖房居民的年附加有效剂量超过公众限值标准(1mSv),部分矿工的年附加有效剂量超过职业性照射年剂量限值(20mSv);氡子体所致的年附加有效剂量约占总剂量的74%。
Investigations made in five provinces (Hubei, Hunan, Jiangxi, Zhejiang and Anhui) indicate that the additional annual effective doses to the populations are 0.51 - 11.9 mSv with an average of 3.8 mSv for inhabitants, 0.12- 3.54 mSv with an average of 1.0 mSv for workers, 0.11 - 1.7 mSv with an average of 0. 56 mSv for open-pit miners and 8.2 - 71 mSv with an average of 40 mSv for underground miners, respectively. The additional annual effective doses to a fraction of inhabitants are in excess of the public limits of 1 mSv, and those to the part of miners exceed the annual dose limit, 20 roSy, of occupational exposure. Radon progeny contributed about 74% the total dose.
出处
《辐射防护通讯》
2006年第1期20-23,共4页
Radiation Protection Bulletin
基金
国家环保局
核工业总公司安防局基金资助(基金编号:90201001)
关键词
石煤
石煤矿
辐射剂量
Bone-coal Mine Radiation dose