摘要
目的了解和掌握东北某市地铁行李包安检系统检查过程中的辐射水平,为用人单位确保安检系统辐射安全和制定必要的防护措施提供依据。方法使用AT1123 X、γ辐射剂量当量率仪,按照《X射线行李包检查系统卫生防护标准》(GBZ 127—2002)要求对东北某市地铁1、2号线X射线行李包检查系统工作场所进行放射防护检测。结果行李包入口和出口铅帘处的辐射水平(空气比释动能率)最高,无论最大值或均值,均超过其他位置,其中行李包入口铅帘处的空气比释动能率平均值为0.91μGy/h,最大值为2.13μGy/h;行李包出口处平均值为0.64μGy/h,最大值为1.31μGy/h;其他位置辐射水平接近本底水平。结论该市近2年地铁1、2号线X射线行包检查系统辐射防护水平满足《X射线行李包检查系统卫生防护标准》(GBZ 127—2002)关于空气比释动能率的要求,正常运行状态下,对工作人员及公众的健康与安全产生影响很小。
Objective This paper aims to detect the radiation level of the X-ray baggage inspection system of metro lines 1 and 2 in a city in Northeast China,and analyze the safety of the detection results,understand and master the radiation level during the inspection of the subway baggage security inspection system in the city,so as to provide basis for employers to ensure the radiation safety of the security inspection system and formulate necessary protective measures.Methods We used the AT1123X,γradiation dose equivalent rate instrument to carry out radiation protection detection on the workplace of baggage inspection system according to The Requirements of Health Protection Standard for X-ray Luggage Inspection System(GBZ 127—2002).Results The radiation level(air specific kinetic energy release rate)at the lead curtain of the en-trance and the exit of luggage bag was the highest,which exceeded other positions regardless of the maximum or average value.The average value of air specific kinetic energy release rate at the lead curtain of the entrance of luggage bag was 0.91μGy/h,max.2.13μGy/h;The average value at the baggage exit was 0.64μGy/h,max.1.31μGy/h.The radiation level at other locations was close to the background level.Conclusion The radiation protection level of the X-ray luggage inspection system of metro lines 1 and 2 in recent 2 years meets The Requirements of Health Protection Standard for X-ray Luggage Inspection System(GBZ 127—2002)on the specific energy release rate of air.Under normal operation,it has little impact on the health and safety of staffs and the public.
作者
徐明莉
杨平
姚恕
吴爱军
汪传文
XU Ming-li;YANG Ping;YAO Shu;WU Ai-jun;WANG Chuan-wen(Jilin Provincial Institute of Occupational Disease Prevention and Treatment,Changchun,Jilin 130102,China)
出处
《中国卫生工程学》
CAS
2022年第3期356-357,363,共3页
Chinese Journal of Public Health Engineering
关键词
X射线行李包检查系统
放射防护
地铁
X-ray baggage inspection system
Subway
Radiological Protection
