Radon Monitoring and Control of Radon Exposure

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【标题】Radon Monitoring and Control of Radon Exposure

【作者】 Peter Anthony Colgan  Anthony McGarry 

【摘要】Typically over 50% of the worldwide collective dose from ionising radiation is due to radon-222 (radon); a decay product of uranium-238. Because it is a gas; radon can move through soils and can accumulate in buildings such as houses; schools and workplaces. This paper describes the mechanisms by which radon can enter buildings and summarises the epidemiological evidence linking radon exposure to lung cancer; including consideration of the synergistic effect of smoking. The components of a national programme to measure and reduce indoor radon are discussed. The authors propose a dual approach to radiation protection: reducing individual risk by identifying and remediating existing buildings with the highest radon concentrations while at the same time reducing collective dose through the radon proofing of new construction. Finally; a number of different radon measurement techniques are described and the advantages and disadvantages of each are discussed.