能源研究与管理2025，Vol.17Issue(3)：17-22,6.DOI:10.16056/j.2096-7705.2025.03.003
核电站蒸汽发生器二次侧异物分布规律
Migration and Distribution of Objects in Steam Generators Secondary Side at Pressurized Water Reactor Nuclear Power Plants
摘要
Abstract
To mitigate the risk that objects infiltration into the secondary side of steam generators could induce abrasion or impact damage to heat transfer tubes,thereby compromising the reliability of nuclear safety barriers,this investigation methodically examined the origins and migration pathways of such objects.By conducting a comparative analysis of sta-tistical data on foreign objects in nuclear power plant steam generators across domestic and international contexts,the study elucidated the correlation between the deposition patterns on the tube sheet and local flow field characteristics.Results revealed that incidents of objects domestically reported remained substantially elevated in recent years,implementing a"defense-in-depth"strategy may prove more efficacious in precluding entry.Moreover,the likelihood of objects accumulation above the tube sheet exhibited a direct positive correlation with regional flow velocity.Overall,the distribution profile demonstrated that peripheral zones with maximal flow velocities accounted for over half of the deposits,while interior regions characterized by diminished velocities contributed proportionally less.This research furnishes guidance for subsequent endeavors,including stratified management of objects,video-based inspection protocols,and wear evaluation.关键词
蒸汽发生器/二次侧异物/轴向分布/径向分布/异物迁移Key words
steam generators/foreign objects/axial distribution/radial distribution/objects migration分类
能源科技引用本文复制引用
刘勇,陈杰,赵清森,田付军,彭伟頔,夏朋..核电站蒸汽发生器二次侧异物分布规律[J].能源研究与管理,2025,17(3):17-22,6.基金项目
中国广核集团尖峰计划项目(R-2023SZSO71TF) （R-2023SZSO71TF）
