Failure analysis of the condenser brass tube in 150 MW thermal power units
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- 作者：Yong-De Li ; Na Xu ; Xiao-Feng Wu ; Wei-Min Guo ; Jun-Bo Shi ; Qi-Shan Zang
- 关键词：Condenser brass tube ; Erosion ; Dezincification&ndash ; corrosion ; Failure analysis
- 刊名：Engineering Failure Analysis
- 出版年：2013
- 出版时间：October, 2013
- 年：2013
- 卷：33
- 期：Complete
- 页码：75-82
- 全文大小：3604 K
文摘
In this case study, the failure cause of a condenser brass tube in 150 MW thermal power units was investigated. The features of erosion were observed by macro and micro observations, and the necessary conditions for erosion were satisfied: higher flow rate, turbulence and silts contained in cooling water. The dezincification-corrosion was also verified in this case study by EDS analysis. Given all of that, the failed condenser brass tube is considered to be caused by the synergism of erosion and dezincification-corrosion.