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近代辐射防护的观点认为,集体剂量的估算是“危害评价”的依据,而全体公众所接受的集体剂量是整个“辐射危害”评价的基础。北京市公众受照剂量研究得出: (1)辐射致北京地区公众集体有效剂量当量为29600man·Sv,人均有效剂量当量为2.96mSv/a。遗传有意义剂量(GSD)为1.63mGy/a。(2)天然辐射致公众剂量占总剂量的83%,其中氡占剂量的37%,占天然辐射的45%。与全球比较,北京为普通辐射本底地区。(3)北京市医疗照射频度为每千人口671.6,人均有效剂量当量为0.43mSv,集体有效剂量当量为4680man·Sv,占公众总剂量的16%。(4)北京市同位素生产和核技术应用职业人员的有
Modern radiation protection point of view, the collective dose estimate is the basis of “hazard assessment”, and the collective accepted by the general public dose is the basis of the “radiation hazard” evaluation. According to the research of public exposure dose in Beijing, (1) The public effective dose equivalent of Beijing is 29600man · Sv and the average effective equivalent dose of Beijing is 2.96mSv / a. The genetically meaningful dose (GSD) is 1.63 mGy / a. (2) The public dose of natural radiation accounts for 83% of the total dose, of which radon accounts for 37% of the dose and accounts for 45% of the natural radiation. Compared with the world, Beijing is the background of ordinary radiation. (3) The frequency of medical exposure in Beijing is 671.6 per thousand population, the effective equivalent dose per capita is 0.43mSv, the effective collective dose equivalent is 4680man · Sv, accounting for 16% of the total public dose. (4) There are professionals in Beijing’s isotope production and nuclear technology applications