| Issue |
E3S Web Conf.
Volume 261, 2021
2021 7th International Conference on Energy Materials and Environment Engineering (ICEMEE 2021)
|
|
|---|---|---|
| Article Number | 02027 | |
| Number of page(s) | 5 | |
| Section | Energy Chemistry Performance and Material Structure Analysis | |
| DOI | https://doi.org/10.1051/e3sconf/202126102027 | |
| Published online | 21 May 2021 | |
Failure Analysis and Protection of Oxygen Corrosion of Reheater Tube in a Power plant
1
Liaoning Dongke Electric Power Co. Ltd, Shenyang, China
2
China Special Equipment Inspection and Research Institute, Beijing, China
3
Electric Power Research Institute of State Grid Liaoning Electric Power Co. Ltd, Shenyang, China
* Corresponding author: lixiuneng@csei.org.cn
The failure analysis of reheater tubes were analyzed by means of alloy composition analysis, metallographic structure analysis, mechanical properties analysis and oxide composition analysis. The results showed: The alloy composition meets the requirements of 12Cr1MoV standard. No abnormality was observed in metallographic structure. Mechanical properties qualified. Oxide components are mainly O and Fe. Comprehensive analysis shows that The main reason of reheater tube failure is oxygen corrosion, which caused thinning of the reheater tube wall, leading to leakage accident. Suggestions for subsequent protection are put forward.
© The Authors, published by EDP Sciences, 2021
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