摘要
在钍基ADS快热耦合次临界反应堆设计的基础上,应用研制的蒙特卡罗燃耗程序MCNTRANS对次临界堆芯在恒定功率下整个寿期内的燃耗特性进行了计算,研究分析了堆芯嬗变能力、钚焚烧性能、堆芯寿期内keff变化及加速器束流的协调匹配。分析结果表明:所设计堆芯的次锕系核素(MA)嬗变支持比可达15个百万kW级的PWR,长寿命裂变产物(LLFP)嬗变支持比为2.2个百万kW级的PWR;热区内233 U的裂变贡献为25%,堆芯嬗变、增殖能力强。整个堆芯寿期内keff变化在1%左右,降低了ADS对加速器束流强度的要求。
Based on the design of thorium-based ADS fast-thermal coupled subcritical reactor,the burnup characteristics during the lifetime with constant power were calculated using the Monte Carlo code MCNTRANS.Transmutation ability,plutonium brunup performance,k eff change during the lifetime and the coordination of accelerator beam current were analyzed.The results indicate that the MA transmutation support ratio of the designed core is 15 PWRs of million kilowatt and the long life fission product(LLFP)transmutation support ratio is 2.2 PWRs of million kilowatt.In addition,the fission contribution of 233 U in the thermal zone is 25%so that the ability of transmutation and proliferation of the core is strong.Besides,the change of k eff in the lifetime is about 1%which can reduce the requirements of the accelerator beam intensity.
作者
朱庆福
赵善桂
宁通
ZHU Qingfu;ZHAO Shangui;NING Tong(China Institute of Atomic Energy,P.O.Box 275-45,Beijing 102413,China;Nuclear and Radiation Safety Center,Ministry of Environmental Protection,Beijing 100082,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2018年第1期101-106,共6页
Atomic Energy Science and Technology
关键词
ADS
钍基
燃耗特性
ADS
thorium-based
burnup characteristic
