论文部分内容阅读
本文介绍了水-水零功率堆均匀栅格中,利用周期法和脉冲中子源法测量Gd_2O_3—UO_2毒物燃料棒反应性效应的几个实验结果。给出了在水铀体积比分别为3.27、2.74和2.14的三种堆芯栅格中,Gd_2O_3浓度分别为0.5W/0、0.8W/0和5.0W/0的Gd_2O_3—UO_2毒物燃料棒沿着堆芯经向方向单棒反应性价值和不同位置的反应性饱和浓度;同时给出了在水铀体积比为3.27的堆芯栅格中,Gd_2O_3—UO_2毒物燃料棒之间的反应性干涉效应以及控制棒对这类可燃毒物反应性效应影响的实验结果。本实验还研究了Gd_2O_3微粒大小及Gd_2O_3微粒表面镀钼保护层对钆可燃毒物反应性价值的影响,并给出了相应的实验结果。
In this paper, we introduce the experimental results of periodic effect and pulsed neutron source method for measuring the reactivity of Gd_2O_3-UO_2 poison fuel rods in a uniform grid of water-water zero-power reactor. Gd_2O_3-UO_2 fuel rods with Gd_2O_3 concentrations of 0.5W / 0, 0.8W / 0 and 5.0W / 0 are presented in three core grids with volume ratios of 3.27, 2.74 and 2.14, respectively The reactivity of single rod and the reactivity saturation concentration at different positions of the core in the meridional direction of the core are obtained. At the same time, the reactive interference between Gd 2 O 3 -UO 2 poison fuel rods in the core grid with the volume ratio of uranium of 3.27 is given Effect and control rod on the reactivity of such flammable toxic effects of experimental results. In this experiment, we also studied the influence of the size of Gd_2O_3 particles and the protective layer of Gd_2O_3 particles on the reactivity of gadolinium combustible toxins, and gave the corresponding experimental results.