压水堆核电厂一回路硼浓度偏差分析与^(10)B丰度变化研究

Analysis of Boron Concentration Deviation and ^(10)B Abundance Evolution in Primary Loop of Pressurized Nuclear Plants

运用理论推导的方法分别对考虑与不考虑硼化2种情况下的10B丰度的变化进行计算分析,给出压水堆一个循环内的10B丰度变化规律,并将10B丰度计算值与实测值进行对比。对比显示在考虑硼化之后的丰度表达式是精确的。以此为基础,可以对燃料管理软件给出的理论硼浓度进行修正,并进行实验验证。通过所给出的公式与分析方法,可对硼浓度偏差进行修正。

The 10B abundance evolution under two conditions,i.e.,with and without boronizing,is calculated and analyzed with theoretic derivation method,and the evolution pattern of 10B abundance for one cycle in PWR is provided.The comparison of the calculated and measured 10B abundance shows that the abundance equation considering the boronizing is accurate.With this,the theoretical boron concentration provided by the fuel management software can be corrected and validated.According to the equation and analysis method,the boron concentration deviation problem could be well understood or even solved.