Olszewski Jerzy, Kacprzyk Janusz, Kamiński Zbigniew
Instytut Medycyny Pracy im. prof. J. Nofera, Łódź Załdad Ochrony Radiologicznej.
Med Pr. 2010;61(6):635-9.
For over 40 years already, the Nofer Institute of Occupational Medicine (NIOM) in Lodz has been supervising non-ferrous metal mines for miners' radiation risk of radon and its short-lived daughters products found in the air of mines.
The supervision involves the use of trace detectors placed in passive dosemeters worn by a representative group of miners.
During the late 1960s, the exposure in some mines was as high as 50 mSv/year. Owing to the steps undertaken in the mines, including primarily the provision of improved ventilation systems, the exposure was reduced to 5 mSv/year, and then to 2 mSv/year during the 1980s and 1990s.
The results of measurements, performed during the recent 10 years, show that the exposure in non-ferrous metal mines is now within the limits specified for worker category B, i.e., not exceeding 6 mSv/year. The mean annual effective dose for a ten-year (1998-2009) period was 2.1 +/- 0.9 mSv/year.
40多年来，罗兹的诺费尔职业医学研究所（NIOM）一直在监测有色金属矿，以评估矿工接触矿井空气中氡及其短寿命子体产物的辐射风险。
监测工作包括使用置于一组有代表性的矿工佩戴的被动剂量计中的微量探测器。
在20世纪60年代末，一些矿井中的辐射暴露高达每年50毫希沃特。由于矿井采取了措施，主要是提供了改进的通风系统，辐射暴露降至每年5毫希沃特，然后在20世纪80年代和90年代降至每年2毫希沃特。
最近10年的测量结果表明，有色金属矿中的辐射暴露目前处于B类工人规定的限值范围内，即每年不超过6毫希沃特。1998 - 2009年这十年期间的年平均有效剂量为每年2.1±0.9毫希沃特。
