Maharaj H P
Bureau of Radiation and Medical Devices, Health Protection Branch, Department of National Health and Welfare, Ottawa, Ontario.
Health Phys. 1989 Jul;57(1):141-8. doi: 10.1097/00004032-198907000-00017.
An investigation into the stray radiation from baggage x-ray equipment was conducted by using survey data that spanned an 8-year period (1978-1985) in conjunction with operator dose equivalent and exposure estimates based on a semi-empirical model. Less than 8% of the equipment emitted levels in excess of the regulatory limit of 0.13 microC kg-1 h-1 (0.5 mR h-1), but in no case was there a radiation health hazard to the equipment operators, allied security personnel, law enforcement officers and members of the public. Current evidence (namely, measured data and the semi-empirical model dose equivalent and exposure estimates) indicates that occupational exposures are well below the annual dose equivalent limit of 5 mSv (0.5 rem) recommended by the ICRP for non-radiation workers. Reviewing maintenance and operational procedures, monitoring design changes on new equipment, conducting limited routine surveys and educating personnel appear sufficient to preclude a radiation hazard.
通过使用跨越8年（1978 - 1985年）的调查数据，并结合基于半经验模型的操作员剂量当量和照射估计值，对行李X光设备的杂散辐射进行了调查。不到8%的设备发出的水平超过了0.13微库仑/千克·小时（0.5毫伦琴/小时）的监管限值，但在任何情况下，对设备操作员、联合安保人员、执法人员和公众都不存在辐射健康危害。目前的证据（即测量数据以及半经验模型剂量当量和照射估计值）表明，职业照射远低于国际放射防护委员会为非辐射工作人员推荐的5毫希沃特（0.5雷姆）的年剂量当量限值。审查维护和操作程序、监测新设备的设计变更、进行有限的常规调查以及对人员进行教育，似乎足以预防辐射危害。
