控制黑棒和灰棒对AP1000反应堆K_(eff)值影响的M-C模拟  

M-C Simulation on K_(eff) Value for Control and Gray Rod Effect in AP1000 Reactor

作　　者：魏强林[1,2] 刘义保[1,2] 杨波[2] 吴和喜[2] 

机构地区：[1]核技术应用教育部工程研究中心(东华理工大学) [2]东华理工大学核工程与地球物理学院,南昌330013

出　　处：《科学技术与工程》2013年第8期2074-2078,共5页Science Technology and Engineering

基　　金：国家自然科学基金项目(11205031);江西省自然科学基金(2009GZW0001);核技术应用教育部工程研究中心(东华理工大学)开放基金(HJSJYB2011-10);东华理工大学校长基金(DHXK1215)资助

摘　　要：采用正在三门建造的AP1000核电厂堆芯参数,使用MCNP5程序建立AP1000堆芯数学模型。考虑了燃料棒、黑棒与灰棒7种不同排布方式,分3种情况通过调节黑棒和灰棒在堆芯中的深度来研究有效增值因数Keff值的变化情况。模拟结果表明:随着黑棒和灰棒在反应堆堆芯中的插入,Keff值在1.44—1.22之间变化。为了验证其合理性,并用1 000×10-6(ppm)的硼酸溶液进行了化学补偿模拟试验,计算得Keff值在1.17—1.07之间,基本能够满足降低过剩反应性的要求。Reactor core parameter of AP1000 nuclear power plant is used. Taking into account 7 different ways arrangement of the fuel rod, control and gray rod, AP1000 reactor core mathematical model is established by the MCNP5 code. The effective multiplication factor Koff is studied through 3 different ways by adjusting the depth of control and gray rod in the reactor core. Simulated results show that the Keff value changed between 1.44 and 1.22 with insertion of control and gray rod, In order to verify the reasonableness, the simulation experiment of chemical compensation is done by using 1 000 × 10^-6（ppm） boric acid, and the experiments show the Koff values changed between 1.17 and 1.07 , which could basically meet the requirements of reducing the excess reactivity.

关 键 词：黑棒和灰棒 AP1000 MCNP5 有效增值因数Keff值 

分 类 号：TL411.5[核科学技术—核技术及应用] O571.4[理学—粒子物理与原子核物理]