采用MCNP模拟及落棒法刻度CMRR控制棒价值  

Benchmarking verification of control rod effects on CMRR using MCNP codes throughout 3D core modeling and rod-drop experiment

作　　者：窦海峰[1] 李润东[1] 冷军[1] 袁姝[1] 杨鑫[1] 冯琦杰[1] 刘晓[1] 高产[1] Dou Haifeng;Li Rundong;Leng Jun;Yuan Shu;Yang Xin;Feng Qijie;Liu Xiao;Gao Chan(Institute of Nuclear Physics and Chemistry,CAEP,P.O.Box 919-211,Mianyang 621900,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621900

出　　处：《强激光与粒子束》2018年第5期162-166,共5页High Power Laser and Particle Beams

摘　　要：反应堆控制棒是核反应堆紧急控制和功率调节所不可缺少的控制部件,控制棒价值直接关系反应堆的停堆深度。采用MCNP和ORIGEN程序对CMRR反应堆全堆芯三维详细建模计算,并分别利用落棒法、逆动态法对控制棒积分价值、微分价值进行刻度,理论与实验吻合较好。单根安全棒的积分价值约大于4%Δk/k,事故工况下卡一根安全棒的停堆深度仍然大于10%Δk/k,验证了堆芯物理设计,保障了CMRR反应堆的运行安全。In this research,MCNP code and ORIGEN code are used to calculate the control rod reactivity worth effects by simulating the 3D core model of CMRR reactor.The integral and differential behaviors of reactivity worth effects are measured by rod-drop experiments and digital inverse kinetic method with each other.The calculated and measured results are well accorded.The integral reactivity worth of one safety rod is about 4%Δk/k.Even in an accident when one safety rod gets stuck,the CMRR shutdown margin is still greater than 10%Δk/k,and CMRR is totally safe.So the physical design of CMRR is highly reliable and the operation could be safe.

关 键 词：控制棒价值 MCNP程序 CMRR 落棒法 逆动态法 

分 类 号：TL329.2[核科学技术—核技术及应用]