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目的明确建设项目产生的职业病危害因素,以确保该建设项目的平面布置和分区能够满足放射卫生学的要求,放射防护和安全设施在正常运行状态下,能够有效控制职业病危害,保障放射工作人员和公众的健康。方法利用类比的方法,考核钴-60快速货物检查系统屏蔽防护设计的安全性、合理性和科学性,对与辐射安全相关的防护措施等进行评价和分析,并对拟采取的职业病危害防护措施和职业卫生管理措施的可行性进行论证。结果类比项目的调查结果表明,工作人员、周围公众和货车司机的受照剂量低于本评价管理目标值,在该系统正常运行条件下,预期可以满足年管理目标值的要求。结论钴-60快速货物检查系统建设项目的辐射防护设施平面布置基本满足建筑设计卫生学要求,辐射防护与安全设计在正常运行时基本能够有效控制职业危害,在事故照射下能有效预防和控制潜在照射,符合安全连锁的冗余性和纵深防御的原则。
Objective To clarify the occupational hazards caused by the construction project so as to ensure that the layout and zoning of the construction project can meet the requirements of radiation hygiene. Under normal operation status, radiological protection and safety facilities can effectively control occupational hazards and ensure that radiation workers and Public health. Methods The method of analogy was used to evaluate the safety, rationality and scientificity of shield protection design of Cobalt-60 rapid cargo inspection system, and to evaluate and analyze the radiation protection-related protective measures. The protective measures against occupational hazards And the feasibility of occupational health management measures to demonstrate. Results The results of the analogy project showed that the doses received by the staff, the public around the city and the driver of the truck were lower than the management target of the evaluation. Under the normal operating conditions of the system, it is expected that the annual management target value will be met. Conclusion The layout of the radiation protection facilities of the Cobalt-60 rapid cargo inspection system basically meets the hygiene requirements of architectural design. The radiation protection and safety design can effectively control occupational hazards in normal operation and can effectively prevent and control potential hazards under accidental irradiation Irradiation, consistent with the principles of safety chain redundancy and defense in depth.