【摘要】 目的对武汉市地铁2号线、4号线各站段的氡浓度水平进行检测和评价,初步掌握该地铁重点区域的氡浓度放射性水平,保障地铁工作人员和乘客的身体健康。方法按照《室内氡及其衰变产物测量规范》GBZ/T182-2006附录A-A.1.3进行检测,按照《地下建筑氡及其子体控制标准》(GBZ116-2002)进行评价,按照联合国原子辐射效应科学委员会(UNSCEAR)推荐的估算模型估算氡浓度水平所导致的地铁内相关人员年有效剂量。结果武汉市地铁的氡浓度水平为13.36Bq/m3;从各个站段的浓度水平来看,氡浓度最低为4.71Bq/m3,最高为27.99Bq/m3;从不同检测点来看,控制室的氡浓度最高为15.92Bq/m3;站厅层的氡浓度最低为12.33Bq/m3,不同区域的氡浓度平均水平的差异无统计学意义(P>0.05)。由控制室最高浓度估算出公众的年有效剂量的贡献为0.149m Sv。结论乘坐武汉市地铁的公众人员受到的来自氡的辐射尚在安全范围内。更多还原

【Abstract】 Objective Testing and evaluation the level of the radon concentration in the air of the Wuhan metro line 2 and 4 stations,Preliminary understand the radioactivity level of radon in key area,to protect the health of subway workers and passengers. Methods According to the "Specifications for monitoring of indoor radon and its decay products"GBZ/T182-2006 appendix A-A. 1. 3 for testing and evaluate accordance with the"Standard for controlling radon and its progenies in underground space". Estimate the annual effective dose of relevant personnel in the subway by UNSCEAR’s estimation model. Results The level of radon concentration was13. 36 Bq/m3; from the concentration level of each station,the minimum value was 4. 71 Bq/m3,and the highest value was 27. 99 Bq/m3; from the different point of view,the highest concentration was in the control room which was 15. 92 Bq/m3,the lowest concentration was in the hall which was 12. 33 Bq/m3,the difference areas of radon concentration was not statistically significant( P >0. 05). Conclusion The radiation from radon to the public on the Wuhan subway is still within the safe range.更多还原