ACP100 Radiation Streaming Shielding Design Based on Discrete Ordinates Visual Modeling Technology
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摘要: “玲龙一号”反应堆(ACP100)一体化堆型的设计特点，使得辐射漏束成为其需重点关注的辐射防护问题之一，需要开展针对性的屏蔽设计。为了提升离散纵标方法在模块式小型堆建模计算中的精度，本次研究开发了基于程序NX的离散纵标方法可视化建模插件，能够直接在NX图形界面中完成所有属性的定义，并自动完成网格的剖分形成完整的计算输入。本次研究基于可视化建模技术和自主研发的三维离散纵标输运计算程序Hydra完成了ACP100的辐射漏束计算，针对辐射漏束问题设置了专用的屏蔽块，大幅降低了主泵间的热中子注量率和操作平台的辐射剂量率。
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关键词:
- “玲龙一号”反应堆（ACP100） /
- 辐射漏束 /
- 可视化建模 /
- 离散纵标方法
Abstract: The design characteristics of ACP100 make the radiation steaming become one of the radiation protection problems that need to be paid attention to, and it is necessary to carry out targeted shielding design. In order to improve the accuracy of discrete ordinates method in small modular reactor modeling calculation, a visual modeling plug-in of discrete ordinate method based on the code NX is developed in this study, which can directly define all attributes in NX graphical interface, and automatically complete meshing to form a complete calculation input. In this study, the radiation streaming calculation of ACP100 is completed based on the visual modeling technology and the self-developed three-dimensional discrete ordinates transport calculation code Hydra, and a special shielding module is set for the radiation streaming problem, which greatly reduce the thermal neutron flux in the main pump room and the radiation dose of the operating platform.-
Key words:
- ACP100 /
- Radiation streaming /
- Visual modeling /
- Discrete ordinates method
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图 2 屏蔽块设置与否对主泵间热中子注量率分布影响
Figure 2. Distribution of Thermal Neutron Flux in the Main Pumps Room with or Without Shielding Moudules
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