通过分析秦山第二核电厂1号机组第10次换料大修期间反应堆厂房辐射水平的变化,从辐射分区管理和剂量控制最优化角度考虑,提出换料大修期间反应堆厂房各区域的辐射分区调整。调整结果表明:反应堆厂房大部分区域辐射风险在换料大修期间大大降低,大部分区域可降级为黄区或绿区。 By analyzing the radiation level changes of the reactor building during the tenth refueling overhaul of Unit 1 in Qinshan Second Nuclear Power Station, the radiation zoning adjustment in each area of ​​the reactor building during the refueling overhaul was proposed from the perspectives of radiation zoning management and dose control optimization. The adjustment results show that the risk of radiation in most areas of the reactor plant is greatly reduced during the refueling overhaul, and the majority of areas can be downgraded to yellow or green areas.