Challenges and Solutions to Localized Thinning Management of Secondary Loop Steam & Water Piping in Nuclear Power Plants
-
摘要: 工程经验反馈及有关研究表明，轻水反应堆核电厂二回路汽水管道在管道内流体长期作用下，可能会发生流动加速腐蚀、液滴冲击和汽蚀等老化，从而导致管道母材或焊缝发生局部减薄的老化劣化现象。如不进行有效的预防性检测和系统的主动管理，可能会导致管道局部泄漏或破裂。扼要介绍上述老化机理、老化效应、易发生部位、影响因素以及国内外的主要管理方法和实践。重点探讨了检测方法、检测部位、标准化等管理和应对措施的现状、挑战和发展趋势。Abstract: Engineering feed-backs and research results show that the secondary loop steam & water piping in light water reactor power plants, with the long-term operation of inner-fluid, may suffer from the following aging and degradation phenomena such as flow accelerated corrosion, liquid droplet impingement, cavitation erosion, etc., which may lead to the localized thinning of base metal or weld joint in the pipeline. Without predictive inspection and proactive aging management, the sensitive pipeline may experience local leakage, fracture or rupture. This paper briefly introduces above mentioned aging mechanism, aging effects, sensitive locations, affecting factors, as well as the management methods and practices at home and abroad. The art of status, application and development trend of pipe wall-thickness thinning inspection methods, inspection location, standardization are discussed in detail.
-
-
[1] 钟志民,李劲松,郑会. 核电站二回路汽水管道壁厚管理实践与思考[C]//中国核学会,中国核科学技术进展报告(第二卷)——中国核学会2011年学术年会论文集. 北京:中国原子能出版社,2012:503-509. [2] 刘忠,刘春波,郑玉贵. 碳钢在单相流中流动加速腐蚀的数值模拟[J]. 核动力工程,2009,30(5):48-53. [3] 严卓齐. 流量加速腐蚀对核电站二回路材料影响及对策的研究[D]. 上海:上海交通大学,2007. [4] KIM J H,KIM I S,ZHENG Y G. Flow-accelerated corrosion behavior of SA106 Gr.C weldment[J]. Materials and Corrosion,2003,54:23-31.
[5] HYUKKI S,KYEONGMO H,CHEONGYEOL C. Numerical case studyon the LDIE degradation occurred in the vent header of a high pressure feedwater heater[J]. World Journal of Nuclear Science and Technology,2014,4:26-32.
[6] 张维,钟志民,李锴,等. 核电站二回路汽水管道环焊缝根部流动加速腐蚀及检测[J]. 腐蚀与防护,2014,35(9):943-946. -
期刊类型引用(3)
1. 韩扬，朱琪，陈永安，徐宁. 脉冲涡流检测在核电厂管道的应用. 南方能源建设. 2024(04): 118-126 . 
百度学术
2. 高超，蒲晶菁，张度宝，刘忠，廖雪波. 核电厂疏水器壁厚减薄原因. 理化检验-物理分册. 2023(08): 59-62 . 百度学术
3. 乔航，王力，林根仙，李富海，刘灿帅. 聚丙烯酸对核电厂二回路管道材料流动加速腐蚀行为的影响. 腐蚀与防护. 2022(11): 49-53 . 本站查看
其他类型引用(2)
计量
- 文章访问数: 13
- HTML全文浏览量: 0
- PDF下载量: 8
- 被引次数: 5
下载:
