摘要
ITER赤道窗口生物屏蔽层外的窗口室是放置各种电子仪器和管道的场所,在停堆后允许人员进入其中进行维修等工作。为了保证工作人员安全,本文研究了停堆后窗口室中的剂量率分布。文中使用大型集成中子学计算分析系统VisualBUS中的建模、计算分析模块完成了停堆剂量率计算。结果表明,ITER停堆1天后赤道窗口室中剂量率高出限值(10μSv/h)2个数量级。因此,建议优化生物屏蔽层的设计以增加屏蔽能力。
ITER equatorial port cell outside bio-shield plug is a place for allowing free personnel access after shutdown which accommodates various sensitive equipment and pipes.To ensure the personnel safety in port cell after shutdown,the distribution of dose rate in port cell was studied.Based on VisualBUS（CAD-Based Multi-Functional 4D Neutronics Simulation System）,dose rate calculations were completed in port cell after shutdown.The result showed that dose rates in port cell are still 2 orders of magnitude more than desired limit（10 μSv/h）after one day shutdown.The optimization of bio-shield was needed.
出处
《核科学与工程》
CSCD
北大核心
2011年第4期356-359,371,共5页
Nuclear Science and Engineering
基金
ITER中子学合同(DWO-73-102-MLN)
中国科学院战略性先导科技专项(XDA03040000)
