氡
放射性武器
煤矿开采
环境科学
煤
采矿工程
有效剂量(辐射)
铀矿开采
铀矿
氡暴露
辐射暴露
放射性污染
铀
放射性核素
环境卫生
废物管理
地质学
核医学
工程类
放射化学
医学
量子力学
材料科学
冶金
化学
物理
作者
Lene H.S. Veiga,Vicente P Melo,Sérgio Koifman,E.C.S. Amaral
标识
DOI:10.1088/0952-4746/24/3/008
摘要
The main source of radiation exposure in most underground mining operations is radon and radon decay products. The situation of radon exposure in underground mining in Brazil is still unknown, since there has been no national regulation regarding this exposure. A preliminary radiological survey in non-uranium mines in Brazil indicated that an underground coal mine in the south of Brazil had high radon concentration and needed to be better evaluated. This paper intends to present an assessment of radon and radon decay product exposure in the underground environment of this coal mining industry and to estimate the annual exposure to the workers. As a product of this assessment, it was found that average radon concentrations at all sampling campaign and excavation sites were above the action level range for workplaces of 500–1500 Bq m−3 recommended by the International Commission on Radiological Protection—ICRP 65. The average effective dose estimated for the workers was almost 30 times higher than the world average dose for coal miners.
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