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fireside corrosion

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... be classified into two major types: waterside and fireside corrosion. Oxidative corrosion significantly reduces the thickness of tube walls, increases vapor temperature, and creates serious risks to high-temperature components in operation [ 4 , 5 ]. This study investigated a boiler explosion caused...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... Underdeposit corrosion—caustic gouging Underdeposit corrosion—hydrogen damage Underdeposit corrosion—phosphate corrosion Acid cleaning corrosion Internal deposit/corrosion product buildup Fireside wastage Fireside oxidation Fireside corrosion of superheater and reheater tubing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
...—phosphate corrosion Acid cleaning corrosion Internal deposit/corrosion product buildup Fireside wastage Fireside oxidation Fireside corrosion of superheater and reheater tubing Fly ash corrosion Sootblower corrosion Coal particle corrosion Steam impingement Fireside corrosion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
...) for economically sustained time periods. Material-related failures in steam generators occur due to internal oxidation and corrosion, fireside corrosion, oxidation and erosion, inadequate welding procedures and fabrication techniques, and inadequate material properties (long-term creep) ( Ref 35 ). New materials...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001344
EISBN: 978-1-62708-215-0
... because of their superior fireside corrosion resistance, excellent high-temperature strength, and relatively good weldability with chromium/molybdenum low-alloy steel tubing in the system. This particular tertiary superheating bank operates at 10.5 MPa (1500 psi), with a steam temperature range of 510°C...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... previously. The type of environment and the component metal temperatures are important factors in the promotion of fireside or external corrosion in tube steels in boilers. The corrosiveness of the environment depends on the surface temperature and the condition of and/or the corrosive ingredients...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001406
EISBN: 978-1-62708-229-7
...Abstract Abstract Caustic cracking is the term used to describe one of the forms in which stress-corrosion cracking manifests itself in carbon steels. In the present study, persistent leakage occurred after ten weeks of service from tube expansions in the steam and mud drum of a two-drum D type...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048772
EISBN: 978-1-62708-220-4
... surface contained relatively few inclusions, most of which were very small. A micrograph of a section through the fireside edge of the fracture surface is shown in Fig. 1(c) . Branched cracks similar to those produced by stress corrosion of steel were observed. These cracks had apparently propagated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001479
EISBN: 978-1-62708-229-7
... tubes, the material being drawn out to a feather edge at the time of rupture. Other ruptures in the same and other tubes were of a more brittle type, this being associated with penetration of material by molten copper derived from scale. Boiler tubes Copper Scale (corrosion) Steel tube Mixed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... to prolonged caustic attack that led to ruptures in areas of high stress. The escaping steam eroded the outer surface of the tube causing heavy loss of metal around the rupture points. boiler tubes stress rupture caustic corrosion carbon steel oxide scale deposits punch marks inductively coupled...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001277
EISBN: 978-1-62708-215-0
..., and 4, were reportedly removed from a slanted section above the burners. Transverse ring section were removed from the tube samples. The hot (fireside) side of each tube was designated as the 12:00 position. The tube samples exhibited both localized underdeposit corrosion and hydrogen damage...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001345
EISBN: 978-1-62708-215-0
...× Abstract Abstract A cold-formed Grade TP 304 stainless steel swaged region of a reheater tube in service for about 8000 hours cracked because of sulfur-induced stress-corrosion cracking (SCC). Cracking initiated from the external surface and a high sulfur content was detected in the outer diameter...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... fraction of calculated or experimental failure life. Previous failure statistics indicate high probability of failure. Frequency of repair renders continued operation uneconomical. Nondestructive inspection reveals cracking. Surface degradation from corrosion, including coating degradation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001446
EISBN: 978-1-62708-234-1
... of internal laminations constitutes an objectionable feature in the plates of vessels where heat transfer through the plates is required, particularly in the furnace rings of shell boilers. The laminations form an interruption to the heat path and instances are on record where overheating of the fireside...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0046998
EISBN: 978-1-62708-232-7
..., 250x spectroscopic examination of specimens etched with mixed acids, metallographic examination, and chemical analysis) supported the conclusions that the premature failure of the tube by perforation at the hearth level resulted from (1) corrosion caused by sulfur contamination from the refractory...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001445
EISBN: 978-1-62708-227-3
... where heat transfer through the plates is required, particularly in the furnace rings of shell boilers. The laminations form an interruption to the heat path and instances are on record where overheating of the fireside surface has resulted, leading to subsequent failure. On the other hand, however...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... through the fireside edge of the fracture surface is shown in Fig. 3(c) . Branched cracks similar to those produced by stress corrosion of steel were observed. These cracks had apparently propagated between the inclusions in the steel. Scale was observed over most of the crack path, even down...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... the size and location of samples. Mechanical methods of sample removal, such as cutting with a tube cutter, sawing, or drilling, are less likely to alter either the microstructure or the characteristics of steam-side or fire-side scale, deposits, or corrosion products than is flame cutting. Mechanical...