摘要
通过对分立型铀、钍燃料组件 ,使用在秦山 30 0MW电功率压水堆核电厂中堆芯物理特性的探讨 ,寻找2 3 2 Th在PWR中可能利用的途径。为此 ,特采用铀、钍燃料组件分立的双进料系统的装卸料方法 ,其堆芯寿期分别为铀组件 3个循环 ;钍组件 1 0个循环。并以秦山核电厂为参考电厂 ,进行了 1 0个循环的燃耗计算 ,每一循环装料时均有 4个钍组件进堆。计算结果表明 :到第 1 0循环寿期末 ,堆芯中 40个钍组件所含的2 3 3 U总量已达到 2 1 2 6kg ,可直接参与堆芯的链式反应 ,从而达到利用2 3 2 Th的目的。并可同全铀组件堆芯比较中看出 ,分立型铀、钍组件混装堆芯每一循环 (第 1 0循环后 )可少装 2 0 0多kg2 3 5U ,这样就为钍 铀燃料循环展示了光明的前景。当然如果要达到实际应用 。
A practical application of 232 Th in Qinshan 300 MW(e) PWR was searched by using separated U Th fuel assemblies and the Twin Refuelling system.From the calculation of ten cycles,it shows that if irradiation time of thorium assemblies in core of PWR is long enough (10 cycles),the amount of 233 U in core at the end of irradiation is increased to 212.6 kg and it could take part in the chain reaction of the core.In this way,the practical application of 232 Th could be reached.Compared with full uranium fuel assemblies,more than 200 kg 235 U could be saved for each cycle by using separaed U Th assemblies.It shows the prosperous future of Th U fuel cycle.Of course,there are still some engineering problems left to be solved for real application.
出处
《核科学与工程》
CSCD
北大核心
2000年第2期175-183,192,共10页
Nuclear Science and Engineering
关键词
压水
钍-铀循环
双进料系统
堆芯
EFPD
PWR
reactivities
Th U fuel cycle
twin refuelling system
burn up
EFPD
