Failure Analysis of Boiler Water Wall Tube: A Case Study from Thermal Power Plant

被引：12
|
作者：
Ghosh, Debashis [1 ]
Roy, Himadri [1 ]
Saha, Atanu [1 ]
Subramanian, Chidambaram [1 ]
机构：
[1] CSIR, Ind Serv & Res Grp, Cent Mech Engn Res Inst, Durgapur 713209, India
来源：
JOURNAL OF FAILURE ANALYSIS AND PREVENTION | 2022年 / 22卷 / 01期
关键词：
Water wall tube; Fatigue failure; Failure analysis; Fillet weld; SULFUR;
D O I：
10.1007/s11668-021-01271-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The boiler tube in power plant has been failed after long term in service. With an aid of various characterization techniques such as visual inspection, chemical analysis, dimensional and hardness measurements, fractography, and metallography, the probable cause of failure has been identified. The analysis showed the failure has been occurred due to vibrational fatigue, The dynamic loading due to unstable fluid flow within water wall tube caused hammering to induce vibration that led to alternating stress. The presence of defect in the fillet weld joint under continuous boiler operating condition has led to fatigue failure. Some preventive measures are suggested to avoid similar type of failures in near future.
引用
收藏
页码：203 / 208
页数：6
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