ITER极向场线圈维修过程及照射剂量虚拟仿真  

Virtual Reality-based Simulation forMaintenanceProcess and Occupational Radiation Exposure of ITER PF4

作　　者：赵锦波[1,2] 张澍[1,2] 何桃 龙鹏程[2] 胡丽琴[1,2] ZHAO Jinbo;ZHANG Shu;HE Tao;LONG Pengcheng;HU Liqin(University of Science and Technology of China,Hefei of Anhui Prov.230027,China;Key Laboratory of Neutronics and Radiation Safety,Institute of Nuclear Energy SafetyTechnology,Chinese Academy of Sciences,Hefei of Anhui Prov.230031,China)

机构地区：[1]中国科学技术大学,安徽合肥230027 [2]中国科学院核能安全技术研究所中子输运理论与辐射安全重点实验室,安徽合肥230031

出　　处：《核科学与工程》2020年第2期251-255,共5页Nuclear Science and Engineering

基　　金：国家重点研发计划项目(2019YFE0191700);中国科学院信息化专项项目(XXH13506-104);中国科学院合肥物质科学研究院重点支持项目(KP-2019-13)等项目资助。

摘　　要：根据国际热核聚变实验堆ITER设计标准,ITER极向场线圈(PF Coils)的人工检测和连接维修任务的制定,需要开展维修方案的预评估,验证当前核设计方案的合理性和可行性。基于ITER组织提供的辐射场数据和工程模型,在核与辐射安全仿真系统SuperMC/VisualDose2.3的支持下,开展了ITER PF4维修过程的工人职业照射剂量仿真分析,包括维修过程的虚拟漫游仿真、器官剂量实时评估、累积剂量评估和人员操作过程的虚拟培训仿真。仿真结果显示,根据现有ITER核设计方案,ITER停堆106 s后人员进入低温室开展ITER PF4检修工作所受到的累积剂量为2.19 mSv,为ITER核设计分析人员提供了参考。To bridge the failed ITER PF coils double pancake,hands-on access was required for the inspection and installation in cryostat.As the activated component in cryostat would induce radiation hazard,assessing the decay gamma dose rate inside cryostat was needed to determine and schedule personal accessibility to perform the repair.This paper presented the application of virtual reality technology in radiation dose assessment during ITER PF4 coils maintenance.Real-time assessment of workers’exposure dose rate,virtual training of manual inspection and repair,visualization of radiation map and radiation dose reduction study during ITER PF4 coils maintenance have been presented.The results of this simulation suggested that virtual reality technology was a useful method in real-time dose assessment and operator training,it provided a reference for the ITER nuclear designers.

关 键 词：ITER 职业照射剂量 虚拟仿真 极向场线圈 SuperMC/VisualDose 

分 类 号：TL622[核科学技术—核技术及应用]