移动式放射性废水处理实验装置辐射防护设计

摘要

The radionuclides in the experiment device of mobile radioactive wastewater treatment are distributed in a scattered manner. The purification equipment becomes source after they intercept radioactive materials, and scattering effect is generated when the gamma ray reacts with the material. So when taking radiation protection, we must make clear the dose distribution surrounding the equipment. This article created a three-dimensional model of the experiment device, simulates the space dose surrounding the experiment device of mobile radioactive wastewater treatment by using MCNP, gave the distribution of dose field, works out the protection scheme, and provided guiding basis for the follow-up experiment and protection against radiation of the experiment device of vehicle-mounted mobile radioactive wastewater treatment.%移动式放射性废水处理实验装置中的放射性核素分布较分散，各净化设备在截留放射性物质后成为众多体源，并且γ射线与物质作用时会发生散射效应，因此在进行辐射防护工作时必须了解装置周围空间的剂量分布。本文创建了实验装置的三维模型，利用 MCNP 模拟出了移动式放射性废水处理实验装置周围的空间剂量，给出了剂量场的分布，制定出现场防护方案，并为后续的中放实验及应用于环境中的车载移动式放射性废水处理装置的辐射防护提供指导性的依据。