Objective To determine the radiation level of an X-ray luggage inspection system in a train station for safety evaluation and radioactivity exemption analysis.
Methods A pressurized microR ion chamber survey meter was used to quantify radiation level of a selected luggage inspection system according to relevant national standards.
Results The increased radiation level caused by the X-ray luggage inspection system to the station staff was around 76-91 μSv/a, far less than the national exposure standard that allows an average exposure dose over 5 years to radiation professionals of 20 mSv/a. However, this increased dose was higher than the standard for public individuals (10 μSv/a).
Conclusion The routine usage of the X-ray luggage inspection system does not cause radiation harm to inspection staff and travelers. Nevertheless, the system does not meet the national radioactivity exemption regulation.
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