论文部分内容阅读
应用燃耗监测体法(以 ̄(137)Cs和 ̄(148)Nd为监测体)和重同位素比值法测量秦山核电站考验组件中2号元件棒的燃耗。沿元件棒铀向不同位置切割出7个切片作为分析试样。由 ̄(148)Nd监测体法和比值法得到的燃耗值相互符合得很好。 ̄(137)Cs法的结果却存在一些差别。根据燃耗轴向分布曲线计算出全棒平均燃耗值为2.57×10 ̄4MWd/t(U),误差1.7%。此外,还测量Pu的含量和同位素比值。
The burnup of the No. 2 rod in the Qinshan Nuclear Power Station test unit was measured by the burnup monitoring method (using 137 Cs and 148 Nd as the monitor) and the heavy isotope ratio method. Seven sections were cut along the elemental uranium to different positions as analysis samples. The burnup values obtained by the ~ (148) Nd monitoring method and the ratio method are in good agreement with each other. ~ (137) Cs method results there are some differences. According to the axial distribution curve of burnup, the average burn rate of the whole rod is 2.57 × 10 ~ 4 MWd / t (U), the error is 1.7%. In addition, the Pu content and the isotopic ratio were also measured.