基于AP1000型反应堆嬗变^(237)Np制备^(238)Pu研究  

Production of ^(238)Pu with Transmutation of ^(237)Np in AP1000 Reactor

作　　者：胡文超[1] 靖剑平[1] 赵传奇[1] 刘健[1] 王闯[1] 张春明[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核安全》2017年第4期78-83,共6页Nuclear Safety

基　　金：国家科技重大专项;项目编号:2013ZX06002001

摘　　要：核电站卸载的乏燃料中含有大量放射性核素,这些放射性核素主要包括长寿命裂变产物和次锕系核素,为了消除这些核素的放射性,国际上认为分离-嬗变技术是最有效的方法。次锕系核素中,镎(Np)的含量最高且半衰期长,同时镎是制备238 Pu的主要原料。因此,本文以AP1000型反应堆(以下简称AP1000)作为嬗变堆,研究了堆芯中布置镎的方案,并利用MCNP程序搭建模型进行计算,设计出在首循环堆芯中添加嬗变材料的方案。然后利用燃耗软件SCALE计算了堆芯中添加NpO_2后,经过500天辐照后,堆芯中^(238)Pu生成量为3540克,约为无^(237)Np添加时生成^(238)Pu的253倍。因此,该研究一定程度上可以为我国压水堆嬗变除^(237)Np,同时生产^(238)Pu的技术发展提供研究思路。The spent fuel generated by nuclear power plants contain large quantities of radionuclides, in-cluding long - lived fission products and minor actinides, these nuclides decay to no harm through thou-sands of years. Partitioning and transmutation technology （ P＆T） is the most effective method to eliminate these radionuclides. Neptunium （Np） has a high productivity and long half-time in the spent fuels, and it is the main raw material for the production of 238 Pu. In this paper, we use MCNP code to build the AP1000 reactor core model and design neptunium dioxide （Np0 2） transmutation rod for the first cycle core. We use the bumup code of SCALE to calculate the the production of 238 Pu in the reactor after 500 days irradiation when the nuclide of 237 Np are added into the reactor core. The production of 238 Pu is 3540 grams and it is 253 times over the production without adding 237 Np This study provides a research direction for the production of 238 Pu in China

关 键 词：嬗变 AP1000 ^237NP ^238PU SCALE 

分 类 号：TL361[核科学技术—核技术及应用]