【摘要】 我国目前居民所受天然辐射照射有效剂量高于世界平均水平,这与大量使用掺渣建筑材料有密切关系。氡的析出率是反映掺渣建筑材料的更全面的信息,科学合理地确定建筑材料的氡析出率是减少居民所受内照射重要环节。本文结合我国实际城镇住房的特点,考虑辐射防护和我国法规要求,根据模型计算提出适合我国的掺渣建筑材料氡表面析出率的限制值为20Bqm-2s-1。通过已有的测量数据和初步代价利益分析,论述限制值的合理性。更多还原

【Abstract】 The China dwellers effective dose from natural radiation exposure is higher than the world average level now, which is closely relative with using a lot of building material with slags. The radon exhalation is can reflect all characters and information of building material with slags, so how to confirm radon exhalation value reasonably and scenically is a pertinent method to reduce dwellers internal exposure. Considering national dwelling characters of real city and the requirement of radiation protection and national regulation, this pater is put up forward that the limitation of radon exhalation of building material with drags is 20mBqm-2s-1 based onmodel calculation. The rationality of limitation value is discussed by measure date and analysis of expense-benefit.更多还原