控制棒史截面效应的处理  

program LEWARD, Riso-M-2805, 1989 Treatment for effect on cross sections by introducing control rod history

作　　者：胡永明[1] 许云林[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《清华大学学报（自然科学版）》1995年第6期28-30,共3页Journal of Tsinghua University(Science and Technology)

摘　　要：核供热反应堆的过剩反应性主要靠十字形控制棒来控制。有不同控制棒史的组件内的燃耗分布不同，相应的组件平均截面也就不同。详细考虑控制棒史的影响是很复杂的，为此提出处理控制棒史的线性插值法。假设组件平均截面仅仅与组件总燃耗和带棒燃耗有关。线性插值法要求作无棒燃耗直接计算、带棒燃耗直接计算及在此基础上进行的两种再启动计算。对供热堆含钆组件做了检验计算。通过与跟踪控制棒史的精确计算方法的比较，表明该方法是一个非常简便而有效的方法。The cruciform control rod controlling is the main method to control reactivity in the nuclear heating reactor (NHR). The cruel form control rod affects the flux distribution in the assembly near the control rod strongly, so the burnup distributions in assemblies which have different control rod history are different, their average cross sections are different either. The calculation dealing with the effect of control rod history in detail is very complex, so a linear insertion method is developed. Assume average cross section of assembly is related to total burnup and the burnup with control rod of assembly only. Four kinds of calculations are needed, including calculations of assembly burnup with or without control rod and two restart calculations based on the former two calculations. This method has been applied to calculate assembly with gadolinium in NHR. Compared with the accurate treatment, this method is very convenient and effective.

关 键 词：核供热堆 控制棒史 平均截面 截面效应 

分 类 号：TL413.2[核科学技术—核技术及应用]