Dang Peng, Feng Ziya, Yang Xiaoyong, Cao Xingjiang, Shen Xiaolei, Wang Jin
Department of Radiation Protection, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, People's Republic of China.
Department of Occupational and Radiological Health, Wuxi Center for Disease Control and Prevention, Wuxi, People's Republic of China.
J Radiol Prot. 2025 Mar 25;45(1). doi: 10.1088/1361-6498/adc014.
The occupational personnel of x-ray baggage screening may experience chronic or abnormal radiation exposure. However, their exposure hazards and individual protections remain ambiguous, especially for some new applications and key positions. In this work, exposure levels were analysed through on-site inspection and Monte Carlo simulation. The effective dose and radiological risk were estimated using the International Commission on Radiological Protection, United Nations Scientific Committee on the Effects of Atomic Radiation, and Biologic Effects of Ionizing Radiation VII risk models. The results show that the workplace dose rate could be controlled at a low level under normal use, with a mean value of 0.21Sv·hfrom the survey. However, it is necessary to strengthen radiation protection for some new applications, such as workshops, whose maximum dose rate could reach up to 2.07Sv·h. Additionally, the maximum leakage dose could greatly exceed dose limits under abnormal working conditions. Furthermore, the radiological risk to maintenance and commissioning should be given more attention, as they may be exposed to risks of up to 1.3 × 10% during one work shift. This result is beneficial to deepen the understanding of occupational exposure risks, which could guide individual protection and workplace management.
X射线行李安检的从业人员可能会遭受慢性或异常辐射照射。然而，他们的照射危害及个人防护措施仍不明确，尤其是对于一些新应用和关键岗位。在这项工作中，通过现场检测和蒙特卡洛模拟分析了照射水平。使用国际放射防护委员会、联合国原子辐射影响科学委员会以及《电离辐射的生物效应》第七版风险模型估算了有效剂量和放射风险。结果表明，在正常使用情况下，工作场所的剂量率可控制在较低水平，调查的平均值为0.21Sv·h 。然而，对于一些新应用，如车间，有必要加强辐射防护，其最大剂量率可达2.07Sv·h 。此外，在异常工作条件下，最大泄漏剂量可能会大大超过剂量限值。此外，应更加关注维护和调试人员的放射风险，因为他们在一个工作班次中可能面临高达1.3×10%的风险。该结果有助于加深对职业照射风险的理解，可为个人防护和工作场所管理提供指导。
