反应堆一回路可溶硼^(10)B丰度的跟踪计算

^(10)B abundance follows up of reactor main loop soluble boron

反应堆一回路可溶硼10B丰度变化较小且与功率运行史有密切关系,因此在核设计中一般不考虑它的变化。由此在实际堆芯跟踪过程中产生了很多"难以解释"的现象。本文为可溶硼10B丰度计算建立了一个数学模型,并编制了相应的计算机程序abdc。用此程序做了可溶硼10B丰度随燃耗变化的跟踪计算,解释了在反应堆跟踪过程中与10B丰度有关的现象,更真实的反映了理论计算临界硼浓度与实际跟踪的差别。该程序还可用于硼微分价值随燃耗变化的跟踪计算。

^10B abundance of reactor main loop soluble boron changes little and relates to power history, so it was ignored in nuclear reactor design and some slippery phenomena occurred in core follow-up. A mathematic model is built for ^10B abundance calculation in this paper, and a correlative computer code abdc is also made. The change of ^10B abundance of reactor main loop soluble boron following core burnup was calculated by the code, and some phenomena about ^10B abundance was explained. The critical boron concentration differences between calculation and measurement with ^10B abundance corrected can be more approaching to truth. The code can also be used to correct differential boron value with core burnup.