14英尺核燃料组件变形超声波测量技术及应用  

Ultrasonic Measurement Technology and Application on 14-Foot Fuel Assembly Deformation

作　　者：曾源 梁军[2] 谢伟戎 王刚 Zeng Yuan;Liang Jun;Xie Weirong;Wang Gang(Taishan Nuclear Power Joint Venture Co.,Ltd.,Jiangmen,Guangdong,529200,China;Suzhou Nuclear Power Research Institute Co.,Ltd.,Shenzhen,Guangdong,518000,China)

机构地区：[1]台山核电合营有限公司,广东江门529200 [2]苏州热工研究院有限公司,广东深圳518000

出　　处：《核动力工程》2024年第6期106-111,共6页Nuclear Power Engineering

摘　　要：为了解辐照后燃料组件变形情况,对换料设计优化、调整装料步序提供辅助手段,本测量技术利用超声波测距及后期的图像处理技术,能够在反应堆卸料期间快速测量燃料组件变形,并绘制全堆芯燃料组件变形分布情况。测量结果表明,同一机组循环末全堆芯燃料组件变形情况趋于一致,外围组件在循环末均不同程度朝反应堆外侧变形。本技术可为换料设计优化提供依据,避免落棒试验风险以及外围燃料组件格架磨损。In order to understand the deformation of the fuel assembly after irradiation and provide an auxiliary means for optimizing the refueling design and adjusting the loading sequence,this measurement technology can quickly measure the deformation of the fuel assembly during the reactor unloading and draw the deformation distribution of the whole core fuel assembly by using ultrasonic ranging and post-image processing technology.The measurement results show that the deformation of the whole core fuel assembly of the same unit tends to be consistent at the end of the cycle,and the peripheral assemblies are deformed to the outside of the reactor to varying degrees at the end of the cycle.This technology can provide a basis for the optimization of refueling design and avoid the risk of rod drop test and the wear of peripheral fuel assembly grid.

关 键 词：堆芯 燃料组件 变形测量 反应堆 换料 

分 类 号：TL334[核科学技术—核技术及应用]