Analysis of end crack in boiler tube
Boiler tube failures usually result in frequent forced outages, and ultimately in costly extended outages for major tubing replacement in a plant. There are several failure modes that may occur in a boiler tube, i.e. stress-corrosion cracking, pitting, water-side corrosion, fire-side corrosion, f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/26754/ http://irep.iium.edu.my/26754/ http://irep.iium.edu.my/26754/1/AMR_Boiler_Crack%2325.pdf |
| Summary: | Boiler tube failures usually result in frequent forced outages, and ultimately in costly
extended outages for major tubing replacement in a plant. There are several failure modes that may
occur in a boiler tube, i.e. stress-corrosion cracking, pitting, water-side corrosion, fire-side
corrosion, fatigue failure, overheating, dissimilar metal weld fatigue, mechanical fatigue and
erosion. In this research the failure modes of boiler and its end cracks due to the dissimilar metal
weld is analyzed. Hence data are collected and explored to determine the cause of failure and as a
solution ceramic ferrule is suggested. The use of ceramic ferrule in boiler tube can eliminate the
crack occurrence or delay the process due to thermal properties. The prevention of crack will reduce
frequent maintenance and thus the cost of operation can be minimized. |
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