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 50-60

Visual Appearance of Waterwall Tube Failures Due to Hydrogen Damage Mechanism in Coal Fired Power Plants

Authors
Deepak Kumar Gope1, Anil Kumar Das1, Prahlad Halder1, *
1Advanced Materials Research Lab, NTPC Energy Technology Research Alliance, NTPC Ltd., Greater Noida, Uttar Pradesh, India
*Corresponding author. Email: prahladhalder@ntpc.co.in
Corresponding Author
Prahlad Halder
Available Online 1 October 2025.
DOI
10.2991/978-94-6463-849-3_5How to use a DOI?
Keywords
Hydrogen damage; water wall tube; micro-fissures; under deposit corrosion
Abstract

Failures of boiler tubes in coal fired power plant are due to unforeseen reasons are a major concern to power engineers. Out of different failure mechanisms, hydrogen damage is one of the corrosion related mechanisms assisted by high temperature that occurs predominantly in water wall tubes of the subcritical boiler. The general physical appearance of a water wall tube failure on account of Hydrogen Damage is “Window Opening”. This paper highlights two other distinct failure appearances associated with hydrogen damage, and their appearance exhibits as “Slit Type” and “Puncture type” opening. It is also observed that hydrogen damage may occur both in relatively new units with only a few years of services and in older plants. Micro-fissures observation in optical microscopy is one of its key assertive features. The study also showed that the failure was intergranular in nature. Based on the evidences, it was observed that the failure was high temperature hydrogen induced under deposit corrosion in nature.

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_5How 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  - Deepak Kumar Gope
AU  - Anil Kumar Das
AU  - Prahlad Halder
ED  - S.Shaswattam
ED  - Anil Kumar Das
ED  - Subrata Sarkar
ED  - Prahlad Halder
PY  - 2025
DA  - 2025/10/01
TI  - Visual Appearance of Waterwall Tube Failures Due to Hydrogen Damage Mechanism in Coal Fired Power Plants
BT  - NTPC Transactions on Energy Research
PB  - Springer nature singapore
SP  - 50
EP  - 60
CY  - singapore
SN  - 978-94-6463-849-3
UR  - https://doi.org/10.2991/978-94-6463-849-3_5
DO  - 10.2991/978-94-6463-849-3_5
ID  - Gope2025
ER  -