自屏蔽X射线无损检测装置的辐射安全分析

Radiation Safety Analysis of Self-Shielding X-Ray Nondestructive Testing Device

目的:对工业生产线上使用的带有自屏蔽防护的X射线无损检测装置辐射安全及防护效果进行评价。方法:以某企业用于汽车零部件缺陷检查的带自屏蔽铅房的X射线无损检测装置为研究对象,分析该装置的辐射安全及射线防护效果。结果:正常工况下该X射线无损检测装置屏蔽体外30 cm处周围剂量当量率均满足标准要求的剂量率参考控制水平要求,采取的辐射安全措施满足标准要求。结论:在采取射线屏蔽、安全联锁及遵守操作规程等辐射安全措施后,工作人员受照的年有效剂量可控制在审管部门核准的剂量控制限值以内,带自屏蔽的X射线无损检测装置能满足辐射安全与射线防护要求。

Objective: The purpose of the research is to evaluate the radiation safety and protection effect on X-ray nondestructive detector with self-shielding used in industrial production line. Methods: The research method was taking the X-ray nondestructive detector with self-shielding lead cabinet as the research object, and the radiation safety and protection effect of the device were analyzed. Results: Under normal working conditions, the dose equivalent rate around 30 cm outside the shield of the X-ray nondestructive detector meets the requirements of the standard dose rate ref-erence control level, and the radiation safety measures taken meet the requirements of protection standard. Conclusion: After taking radiation safety measures such as radiation shield, safety in-terlock and complying with operation regulations, the annual effective dose of workers can be controlled within the dose control limit approved by the management department. The X-ray non-destructive detector with self-shielding meets the radiation safety and protection requirements.