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| Investigation and Analysis on Levels of Indoor Radon Concentrations Around a Nuclear Facility in Beijing |
| LI Xia1, MA Yong-zhong2, WU Yun-yun3, SUN Ya-ru2 |
1. China Institute of Atomic Energy, Beijing 102413 China;
2. Beijing Center for Disease Control and Prevention/Beijing Center for Prevention Medicine Research;
3. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention |
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Abstract Objective To investigate the levels and distribution of radon in dwellings and offices around a nuclear facility in Beijing, and to provide reference basis for the evaluation of radiation health impact of the population.Methods A total of 33 indoor monitoring sites within 10 km of residential and office areas around a nuclear facility in Beijing were selected. Indoor radon concentrations received during the non-heating season and the heating season were measured by solid track detector respectively.Results The overall mean of indoor radon concentration during non-heating season is 48.5 Bq/m3, in a range of 30 to 74 Bq/m3. The overall mean of indoor radon concentration during heating season is 71 Bq/m3, in a range of 50 to 108 Bq/m3. There was no significant difference in the average values of indoor air radon concentrations for various floors.Conclusion Indoor radon concentration of heating season is higher than that of non-heating season, and indoor ventilation measures should be strengthened and improved to reduce and control the health hazards of indoor radon.
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Received: 11 April 2017
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