基于最小包围盒策略的人体辐射剂量评估方法研究

A Method for Radiation Dose Assessment of Human Body Based on Minimum Bounding Box

在核设施停堆维修过程中,需要对维修工人受到的辐射剂量进行预评估。传统的评估方法是将人体简化为一个质点,无法精确评估不同器官的受照剂量。本文发展了一种基于包围盒策略的人体辐射剂量评估方法,并成功应用到国际热核聚变实验堆ITER极向场线圈维修工作人员辐射剂量评估中,结果表明,该方法不仅能提供更为精确的人体剂量评估结果,还能提供人体器官受照剂量,对考虑到器官剂量限值的工人作业方案制定有重要意义。

During the maintenance of nuclear facilities, it is very important to pre- optimize the dose suffered by workers. Human body was regarded as a point to estimate the effective dose in the traditional way, but it is difficult to get the absorbed dose of sensitive organs or tissues. A radiation dose assessment method has been developed to accurately estimate the radiation dose of organs or tissues. The methodology has linen used in the dose assessment of International Thermonuclear Experimental Reactor （ITER） PF4＇s double pancake jumper connection repair. The results showed that the proposed method could compute the absorbed dose of organs and tissues more accurate and provide precise organic dose for the radiation protection considering the doselimiting of organs or tissues.