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目的通过对石家庄市区不同楼层、不同建筑材料、不同建筑年代等办公场所室内氡浓度水平及其影响因素的调查分析,估算所致工作人员受照剂量。方法采用固体核径迹法测量累积剂量。结果石家庄市办公场所室内氡浓度平均值为(32.12±13.74)Bq·m-3,最高值为钢筋混凝土结构的平房。所致工作人员平均有效剂量为0.58m Sv/a。结论石家庄市办公场所室内氡所致工作人员受照剂量属正常天然本底辐射水平;建筑材料及通风设施是影响办公场所氡浓度的主要因素,选择恰当的建筑材料、有效通风可以降低工作人员受照剂量,减低其对人类健康的影响。
Objective To investigate the indoor radon concentration levels in Shijiazhuang urban area with different floors, different building materials, different building ages and other influencing factors, and to estimate the dose received by workers. Methods Solid nuggets were used to measure the cumulative dose. Results The average indoor radon concentration in Shijiazhuang was (32.12 ± 13.74) Bq · m-3, and the highest value was in the bungalow with reinforced concrete structure. The average effective dose of staff was 0.58m Sv / a. Conclusion Radiation caused by indoor radon in Shijiazhuang office is subject to a normal natural background radiation level. Construction materials and ventilation facilities are the main factors that affect the radon concentration in office space. Choosing the appropriate building materials and effective ventilation can reduce staff exposure According to dose, reduce its impact on human health.