钠空泡反应性效应是钠冷快堆设计与安全分析的重要参数。在流道瞬间完全堵塞等严重事故中,反应堆局部区域冷却失效造成钠沸腾,钠从燃料组件中排出,引入各种反应性效应,其中最主要的是钠空泡反应性效应,需要准确测量其反应性价值用于设计验证和事故工况的安全分析。 The sodium void reactivity effect is an important parameter in the design and safety analysis of sodium-cooled fast reactors. In serious accidents such as instant blockage of the flow channel, the cooling failure in the local area of ​​the reactor causes sodium boiling. Sodium is discharged from the fuel assembly and various reactive effects are introduced. The most important of these is the sodium vacuolization reactivity effect, which needs to be accurately measured Reactive value for design verification and safety analysis of accident conditions.