Hydrogen damage in water wall tube boiler of coal power plant

Agung Sidang Kustiawan*, Bambang Arip Dwiyantoro

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Boilers have an important role in steam power plants in Indonesia. In the operation of a boiler failure often occurs, especially in the area of the water wall tube. Water wall is one component where water gets warmed up from the combustion chamber and changes its phase from liquid to steam. Water wall pipe damage that occurs in the form of a leak that is brittle and without accompanied by thinning of the pipe wall. From the results, composition testing is known that this water wall pipe is carbon steel with SA 210-A1 specifications. Metallographic results show that the microstructure of this material is ferrite and pearlite with a banded structure. On the results, metallography is also shown by the presence of voids and microcrack that appears on grain boundaries. On hardness testing, it is known that the inner and middle of the tube has decreased the average hardness of 120 Hvn. On the outside of the tube, the value of hardness is still averaged 140 Hvn. From SEM analysis, it can be seen that the deposit is quite thick on the inside of the tube which reaches 200 microns. A decrease in boiler water quality is one of the causes of leakage and hydrogen damage.

Original languageEnglish
Title of host publication1st International Seminar on Advances in Metallurgy and Materials, i-SENAMM 2019
EditorsDaisman Purnomo Bayyu Aji, Triyono Triyono, Fethma M. Nor
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420229
DOIs
Publication statusPublished - 17 Sept 2020
Event1st International Seminar on Advances in Metallurgy and Materials, i-SENAMM 2019 - Jakarta, Indonesia
Duration: 12 Dec 201913 Dec 2019

Publication series

NameAIP Conference Proceedings
Volume2262
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Seminar on Advances in Metallurgy and Materials, i-SENAMM 2019
Country/TerritoryIndonesia
CityJakarta
Period12/12/1913/12/19

Keywords

  • Boiler
  • Carbon steel
  • Deposit
  • Hydrogen damage
  • Water wall

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