IRIS reactor core with thorium fuel  

作　　者：Alrwashdeh MOHAMMAD 

机构地区：[1]Department of Engineering physics,Tsinghua University

出　　处：《Nuclear Science and Techniques》2011年第5期311-315,共5页核技术（英文）

基　　金：Supported by 973 Program(2007CB209807)

摘　　要：This work is aimed at running the first IRIS reactor core with mixed thorium dioxide fuel（ThO2-UO2 and ThO2-PuO2）.Calculations are performed by using Dragon 4.0.4 and Citation codes.The results show the multiplication factor(Keff) for central and peripheral assemblies as a function of burnup.To ensure the proliferation resistance,the value of 235U enrichment is < 20%.The Keff is calculated using Dragon 4.0.4 for a single fuel rod and the model developed to fuel assembly,while the whole core was calculated using Citation code.For a fuel burnup,the use of increased enrichment fuel in the IRIS core leads to high reserve of reactivity,which is compensated with an integral fuel burnable absorber.The self-shielding of boron is in an IRIS reactor fuel.The effect of increased enrichment to the burn-up rates,and burnable poison distribution on the reactor performance,are evaluated.The equipment used in traditional light water reactors is evaluated for designing a small unit IRIS reactor.This work is aimed at running the first IRIS reactor core with mixed thorium dioxide fuel （ThO2-UO2 and ThO2-PuO2）. Calculations are performed by using Dragon 4.0.4 and Citation codes. The results show the multiplication factor （Keff） for central and peripheral assemblies as a function of burnup. To ensure the proliferation resistance, the value of 235U enrichment is 〈 20%. The Keff is calculated using Dragon 4.0.4 for a single fuel rod and the model developed to fuel assembly, while the whole core was calculated using Citation code. For a fuel burnup, the use of increased enrichment fuel in the IRIS core leads to high reserve of reactivity, which is compensated with an integral fuel burnable absorber. The self-shielding of boron is in an IRIS reactor fuel. The effect of increased enrichment to the burn-up rates, and burnable poison distribution on the reactor performance, are evaluated. The equipment used in traditional light water reactors is evaluated for designing a small unit IRIS reactor.

关 键 词：反应堆燃料 钍燃料 堆芯 虹膜 ThO2 IRIS KEFF 资讯系统 

分 类 号：TL351.1[核科学技术—核技术及应用]