CFETR氚自持分析评估与验证策略  

Analytical Evaluation and Validation Strategy for Tritium Self-Sufficiency of CFETR

作　　者：冉光明[1] 肖成建[1] 王和义[1] 汪小琳[2] RAN Guang-ming;XIAO Cheng-jian;WANG He-yi;WANG Xiao-lin(Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621999,China;China Academy of Engineering Physics,Mianyang 621999,China)

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621999 [2]中国工程物理研究院,四川绵阳621999

出　　处：《核化学与放射化学》2021年第3期257-262,共6页Journal of Nuclear and Radiochemistry

基　　金：CFETR氚工厂系统总体设计技术研究(2017YFE0300300)。

摘　　要：中国聚变工程实验堆(China Fusion Engineering Test Reactor,简称CFETR)的主要目标之一是实现氚自持。采用氚平衡法对CFETR不同运行工况下的氚自持条件进行了分析评估。结果表明:在500 MW运行阶段,CFETR实现氚自持所需的最小氚增殖比(TBR_(r))为1.098,小于CFETR增殖包层可达到的氚增殖比(TBR_(a)),即在理论上满足氚自持条件。在此基础上,提出了CFETR未来通过定期的氚衡算来验证氚自持的基本策略。在基准输入参数和氚存量测量精度限制(1%)条件下,CFETR氚自持验证实验的运行周期需要大于22 d(氦冷包层)或87 d(水冷包层)。Realizing tritium self-sufficiency is one of the aims of the China Fusion Engineering Test Reactor(CFETR).The tritium balance method was applied to evaluate the tritium self-sufficiency of CFETR under different operating conditions.The results show that the required tritium breeding ratio(TBR_(r))for tritium self-sufficiency of CFETR_(a)t 500 MW operation stage is 1.098.The estimated TBR_(r)is smaller than the tritium breeding ratio(TBR_(a))for CFETR breeding blanket,indicating that the tritium self-sufficiency condition is theoretically achieved.Based on the evaluation,the validation strategy for CFETR tritium self-sufficiency by scheduled tritium accountancy was proposed.Under the conditions of basic input parameters and restriction of tritium inventory measuring accuracy(1%),the operating period of tritium self-sufficiency validation experiment is estimated as longer than 22 days(helium cooled blanket case)or 87 days(water cooled blanket case).

关 键 词：CFETR 氚自持 氚增殖比 验证策略 

分 类 号：TQ028[化学工程]