双重非均匀性对燃耗计算影响的初步分析  

Preliminary Analysis of Double Heterogeneity Effects on Burnup calculation

作　　者：秦冬[1] 巨海涛[1] 强胜龙 倪东洋[1] 魏彦琴[1] 

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610041

出　　处：《科技创新导报》2015年第24期247-249,共3页Science and Technology Innovation Herald

摘　　要：弥散燃料是一种先进的燃料元件形式,具有承受燃耗深、包容裂变产物能力强和导热性好的优点。弥散燃料栅元在栅格非均匀性之外引入了燃料芯体的非均匀性,具有双重非均匀的特性。为了控制栅元反应性,燃料芯体中可能会布置一定量的可燃毒物颗粒。在计算含有可燃毒物颗粒的弥散燃料时,如果对燃料芯体采取均匀化混合处理的方式,有可能高估可燃毒物的吸收,造成一定的计算偏差。该文基于弥散型燃料,使用MOI程序对单板栅元模型进行了计算,初步分析了双重非均匀性对燃耗计算的影响。The dispersion fuel is an advanced fuel element form,which has advantages of high burnup,strong ability of containing fission products and good thermal conductivity. The dispersion fuel cell has both lattice heterogeneity and fuel core heterogeneity,which has an intrinsic characteristic of double heterogeneity.And a certain amount of burnable poison particles can be arranged in the fuel core in order to control the reactivity.If calculating dispersion fuel with burnable poison particles in a homogeneous way,the absorption will be over evaluated and a certain deviation will be introduced.This paper studies the double heterogeneity effect on burnup calculation in dispersion fuel element with MOI code.

关 键 词：双重非均匀性 燃毒物颗粒 燃耗计算 

分 类 号：TL333[核科学技术—核技术及应用]