CANDU堆通过冷却剂133Xe浓度趋势查找破损燃料  

Failed Fuel Location by 133 Xe Trend in CANDU Reactor

作　　者：胡威 HU Wei(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堆芯燃料处,浙江海盐314300

出　　处：《核科学与工程》2020年第2期349-352,共4页Nuclear Science and Engineering

摘　　要：秦山第三核电厂两台CANDU6反应堆通过测量缓发中子查找破损燃料的成功率很低,本文通过在线监测的冷却剂133 Xe浓度变化趋势分析方法查找破损燃料,判断破损燃料棒束的入堆时间,确定破损燃料棒束所在冷却剂环路。通过换料前后的133 Xe浓度趋势,可以确定换料通道内是否存在破损棒束,以及破损燃料棒束是否卸出堆芯。该方法在实际应用中取得了良好的效果,近年来成功定位了5个破损燃料通道。At Third Qinshan Nuclear Power Plant,failed fuel location by delayed neutron scanning has bad effect,this paper interprets the method to locate failed fuel by analyzing online-monitored 133 Xe trend of coolant,by which the dwelling time of failed fuel bundle and the coolant loop containing the failed fuel bundle can be determined.By analyzing 133 Xe trend during refueling,it can be known that whether failed bundle exits in the refueling channel,and whether failed fuel is discharged.This method has good behavior in the application,by which 5 defect fuel channel were successfully found.

关 键 词：CANDU-6重水堆 破损燃料查找 133Xe浓度趋势 冷却剂 换料 

分 类 号：TL48[核科学技术—核技术及应用]