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[目的]检测某车站X射线行李包检查系统外表面辐射水平,进行安全评价和放射性豁免分析。[方法]使用便携式电离室射线巡测仪,按国家标准规范要求进行布点检测。[结果]该车站工作人员因X射线行李包检查工作而增加的辐射剂量为76~91μSv/a,远低于放射职业人员连续5年的年平均有效剂量限值20 mSv/a,但高于公众个体受照剂量10μSv/a。[结论]正常使用X射线行李包检查系统不会对工作人员和旅客造成辐射损害,但不能予以放射性豁免。
[Objective] To detect the radiation level on the outer surface of X-ray baggage inspection system at a station, and carry out safety evaluation and radioactive immunity analysis. [Method] The portable ionization chamber ray detector was used to detect the distribution points according to the requirements of the national standard. [Result] The station radiation dose increased by 76 ~ 91μSv / a for X-ray baggage inspection work was far lower than the annual average effective dose limit of 20 mSv / a for radiation professionals for 5 years, but higher than Public individual exposure dose 10μSv / a. [Conclusion] The normal use of X-ray baggage inspection system will not cause radiation damage to staff and passengers, but can not be exempted from radioactivity.