秦山重水堆卸料燃耗下降影响因素研究  

Study on the Influence Factors of Exit Burnup Reduction in Qinshan CANDU Reactor

作　　者：王军 WANG Jun(CNNP Nuclear Power Operations Management Co.,Ltd.,Haiyan of Zhejiang Prov.314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300

出　　处：《核科学与工程》2020年第3期437-441,共5页Nuclear Science and Engineering

摘　　要：秦山CANDU重水堆两个机组近年来卸料燃耗下降明显,直接影响机组的燃料经济性,增加了换料负担。本文从堆芯过剩反应性、慢化剂和冷却剂重水纯度、压力管蠕变和换料设计等各项因素对卸料燃耗的影响进行了理论分析,并使用物理程序根据这些参数的年度平均数据计算年度理论卸料燃耗,分析单项因素和整体的影响,最后总结提出了提升卸料燃耗的可行方法。In the recent years,the exit burnup of Qinshan CANDU reactor two units has reduced significantly,which directly affects the fuel economy and increases the refueling load.In this paper,theoretical analysis is made on the influence to exit burnup of various factors such as excess reactivity,moderator and coolant heavy water purity,pressure tube creep,refueling design,etc.Then exit burnup is calculated based on the annual average data of these parameters using physical codes,and the influence is analyzed of individual factor and the whole.Finally the feasible method of increasing exit burnup is put forward.

关 键 词：CANDU重水堆 卸料燃耗 过剩反应性 重水纯度 蠕变 换料设计 

分 类 号：TL329[核科学技术—核技术及应用]