摘要
本文介绍5MW 低功率堆(5MW LPR)首次装料及首次临界试验。由于本堆使用有燃耗的燃料元件,铍作反射层,光激中子成为强的内中子源,其强度随着燃料元件装量的增加而增加。因此,装料时元件法外堆结果有较大的涨落,但整个装料过程是安全的。在次临界下,做了控制棒相对效率曲线,然后,提升控制棒,进行计数外推,达到首次临界。
The first criticality experiment of 5MW Low Power Reactor(LPR)is described.Because 5MW LPR utilizes the spent fuel andberyllium reflector,the photo neutrons becomes a strong inher-ent neutron source and it will be enhanced with loading fuelelements.Therefore,there is considerable fluctuation in the criti-cal extrapolation by loading fuel elements.But the whole critica-lity approaching process is still safe enough.The relative reacti-vity worth curves of control rods were obtained in the subcriti-cal condition.By means of the count extrapolation while withdra-wing rods stepwise,5MW LPR achieved its first criticality.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
1992年第4期65-68,共4页
Nuclear Power Engineering
关键词
低功率
反应堆
物理启动
首次临界
5MW Low Power Reactor
Loading
Physical startup
Count extrapotation
First criticality
