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Boiler tube failures (BTFs) in natural circulation high pressure drum boiler of a power station

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Title Boiler tube failures (BTFs) in natural circulation high pressure drum boiler of a power station
 
Creator Sohail, M Azad
Mustafa, A Ismail
Gafur, M Abdul
 
Subject BTFs
Boiler
Hydrogen damage
Regime
Water wall tubes
 
Description 61-65
This paper assesses boiler tube failures (BTFs), especially in boiler water wall tubes (BWWTs) for a natural circulation
high-pressure fossil (natural gas) drum boiler unit (TIME-COB-206, Russia). Metallographic (micro and macrostructural)
examinations of BWWTs materials (carbon steel, Russia) were carried out extensively. Analyses of carbon (mild) steels (0.22%
C) revealed distinctive changes in ferrite-pearlite distribution, might be due to decarburization. Huge pits, few grooves followed
by flow lines were observed on internal surfaces of BWWTs with respect to length of power plant operation. Corrosions or
scaling in BWWTs depicted one of the major causes of BTFs in fossil units with drum boilers usually treated by coordinated
phosphates.
 
Date 2009-01-16T04:36:05Z
2009-01-16T04:36:05Z
2009-01
 
Type Article
 
Identifier 0022-4456
http://hdl.handle.net/123456789/2792
 
Language en_US
 
Publisher CSIR
 
Source JSIR Vol.68(1) [January 2009]