2015年雅安市环境γ辐射剂量水平分析

目的 掌握雅安市环境γ辐射水平,了解居民生活环境天然辐射外照射水平并估算居民暴露剂量。方法 采用分层随机方式,在雅安市每个乡镇中随机选点开展环境γ辐射剂量率即时检测,并分析估算环境γ辐射剂量率水平和其对居民产生的有效剂量当量。结果 雅安市环境地表γ辐射剂量率为117.97 nGy/h,其造成的公众人均年照射有效剂量为0.72 mSv,均略高于我国平均水平。结论 雅安天然放射性环境安全可靠,不会对民众产生不良影响,适合人类居住。

Analysis of 2015 Ya'an Environmental Gamma Radiation Dose Level

Objective To master Ya'an environment gamma radiation levels, understand the residents' living environment natural radiation level of external exposure, and estimate residents' exposure dose. Methods Using stratified random method, We detected real-time environmental gamma radiation dose rate in each township in Ya'an, and make analysis to estimate the environmental gamma radiation dose rate and the effective dose equivalent of the residents. Results Ya'an environmental gamma radiation dose rate was 117.97 nGy/h, and its public exposure per person in effective dose was 0.72 mSv, which were both slightly higher than the average level of our country. Conclusion Ya'an natural radioactive environment is safe and reliable, with no adverse impact on people. It is completely suitable for human habitation.