Open AccessFailure analysis of an economizer tube sheet & its cover due to corrosionand imperfection
Author(s) -
Shaiful Rizam Shamsudin,
Rajaselan Wardan,
Faizal Ibrahim,
Muhammad Lutfi Ibrahim
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2080/1/012023
Subject(s) - economizer , welding , metallurgy , materials science , metallography , flue gas , engineering , waste management , mechanical engineering , microstructure , heat exchanger
The boiler's economizer was found to be inefficient. Corrosion is suspected to be the source of the economizer's pressure reduction. The examinations included visual inspection, stereomicroscope, metallography, elemental microanalysis by EDS, and chemical composition analysis. The economizer failed due to a weld crater caused by improper welding, which induced residual welding stress. The slight sulfur content of the condensed or flue gas that causes rusting on the economizer's outer cover is not considered a severe failure issue. Material SUS304 stainless steel is the right selection for economizer materials.