NTPC Transactions on Energy Research

A NETRA Initiative
Editor(s):

S.Shaswattam, Anil Kumar Das, Subrata Sarkar, Prahlad Halder

ISBN:
978-94-6463-848-6
Type of Book:
Edited Volume
Copyright Year:
2025
Open Access

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ChapterPages 38-49

Failure Investigation of Boiler Tubes Failed Due to Thermal Fatigue and Corrosion Fatigue

Authors
Aditya Gokhale1, Deepak Kumar Gope1, Prahlad Halder1, Anil Kumar Das1, Anand D. Varma1, *
1Advanced Materials Research Lab, NTPC Energy Technology Research Alliance, NTPC Ltd., Greater Noida, Uttar Pradesh, India
*Corresponding author. Email: anandvarma@ntpc.co.in
Corresponding Author
Anand D. Varma
Available Online 1 October 2025.
DOI
10.2991/978-94-6463-849-3_4How to use a DOI?
Keywords
Thermal fatigue; corrosion fatigue; Ferrite; Pearlite
Abstract

Flexible operations cause base load fluctuations in the power demand affecting the boiler operation. Failure due to thermal fatigue occurs for components subjected to cyclic load fluctuations. These fluctuations can be of mechanical or thermal nature. Corrosion fatigue is a special case of thermal fatigue wherein the damage is accentuated because of the action of corrosion occurring on the internal surface of the tube. In the present failure investigation, three different tubes were investigated viz., two water wall tubes and one economizer tube. The water wall tubes failed due to thermal fatigue, despite experiencing corrosive environment. Whereas, the economizer tube experienced corrosion fatigue environment. The investigation also points out that although, corrosion fatigue is a sub-set of thermal fatigue, it is necessarily not true that the tube should also experience overheating conditions.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits any noncommercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if you modified the licensed material. You do not have permission under this license to share adapted material derived from this chapter or parts of it.
Book Title
NTPC Transactions on Energy Research
Book Sub Title
A NETRA Initiative
Publication Date
1 October 2025
Print ISBN
978-94-6463-848-6
E-ISBN
978-94-6463-849-3
DOI
10.2991/978-94-6463-849-3_4How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits any noncommercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if you modified the licensed material. You do not have permission under this license to share adapted material derived from this chapter or parts of it.

Cite this article

risenwbib
TY  - CHAP
AU  - Aditya Gokhale
AU  - Deepak Kumar Gope
AU  - Prahlad Halder
AU  - Anil Kumar Das
AU  - Anand D. Varma
ED  - S.Shaswattam
ED  - Anil Kumar Das
ED  - Subrata Sarkar
ED  - Prahlad Halder
PY  - 2025
DA  - 2025/10/01
TI  - Failure Investigation of Boiler Tubes Failed Due to Thermal Fatigue and Corrosion Fatigue
BT  - NTPC Transactions on Energy Research
PB  - Springer nature singapore
SP  - 38
EP  - 49
CY  - singapore
SN  - 978-94-6463-849-3
UR  - https://doi.org/10.2991/978-94-6463-849-3_4
DO  - 10.2991/978-94-6463-849-3_4
ID  - Gokhale2025
ER  -