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Steam cleaning

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430001
EISBN: 978-1-62708-253-2
.... The heat transfer surfaces are therefore required to be periodically cleaned using air, steam, water, or mixtures thereof. On account of the very nature of this fuel, BLRBs suffer from various forms of fire-side corrosion, erosion-corrosion, and erosion related problems. The fact remains that black liquor...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
... and steam from the inside. As a result, and despite due care, tubes fail from time to time, leading to forced outages. Most boiler tube failures can be attributed to faulty operating conditions, improper or inadequate maintenance, and improper engineering practices, in addition to improper material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490383
EISBN: 978-1-62708-340-9
... with advanced steam plants and their respective solutions. The discussion covers the selection of materials on a component-specific basis for boilers as well as steam turbines. boilers material selection steam turbines General Requirements Increasing the efficiency of power plants can result...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900163
EISBN: 978-1-62708-350-8
... are water-based and must be correctly cured. Any water remaining in the stop-off paint will manifest itself during nitriding. The water will form a steam pocket under the paint, producing a bubble. When the bubble bursts, a localized hard spot will form on the exposed steel. Stop-off paint residues can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820077
EISBN: 978-1-62708-339-3
... at the fusion line. Source: Ref 23 Improper PWHT can, however, lead to corrosion failures. Example 2 describes failure of type 430 tube-to-header welds that failed in a heat recovery steam generator because of problems associated with PWHT. Example 1: Leaking Welds in a Ferritic Stainless Steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2010
DOI: 10.31399/asm.tb.hss.t52790193
EISBN: 978-1-62708-356-0
... Room on the 53rd floor. The Executive Dining Room, on the same floor, had a kitchen with type 302 stainless steel sinks, work surfaces, and steam table. Type 302 was also used on the interior for railings, column covers, and the escalators that led to the actual bank on the second floor. Although...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... Abstract This chapter covers the failure modes and mechanisms of concern in steam turbines and the methods used to assess remaining component life. It provides a detailed overview of the design considerations, material requirements, damage mechanisms, and remaining-life-assessment methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720183
EISBN: 978-1-62708-305-8
... methods include alkaline or acid cleaning, pickling or chemical etching, and molten salt bath cleaning. Mechanical cleaning methods include tumbling, wet blasting, dry abrasive blasting, wire brushing, and high pressure water or steam cleaning. Mechanical cleaning can mask flaws by smearing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200115
EISBN: 978-1-62708-354-6
..., as access to the internal cavity was limited. The redesign shown incorporates the Omega section design and achieved a cost saving of 25%, as the core rods can now be removed and the internal cavity can be inspected and cleaned easily. A simple plate is cut and welded into place to produce the final steam...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490001
EISBN: 978-1-62708-340-9
... through a cooling tower provides the cooling water needed to condense the steam exiting from the LP turbine. Combusted gases from the boiler are passed over more heat exchangers to preheat the incoming air to the boiler, are cleaned in scrubbers, and then are allowed to escape into the environment through...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
... of impurities and feedwater parameters on high-pressure boiler components. It discusses deposition and scaling, types of corrosion, and carryover, a condition that occurs when steam becomes contaminated with droplets of boiler water. The chapter also covers water treatment procedures, including filtration...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
... and then through various cleaning devices. Fig. 5.1. Typical cross section of large drum-type utility boiler, showing major water- and steam-cooled tube circuits. The gas flow past the fire side of the boiler tubes originates in the waterwall section and ends with the economizer. The flow...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430107
EISBN: 978-1-62708-253-2
... are often prone to steam-side decarburization due to interaction between carbon from the steel and steam that forms carbon monoxide and hydrogen. The decarburization reaction occurs on the inside diameter (ID) surface of the tube such that the carbon from the interior of the tube diffuses to the surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.9781627083409
EISBN: 978-1-62708-340-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... Abstract This chapter provides practical information on surface treatments that work by altering the surface chemistry of metals and alloys. It discusses the use of phosphate and chromate conversion coatings as well as anodizing, steam oxidation, diffusion coatings, and pack cementation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... Abstract This chapter discusses the effects of corrosion on boiler tube surfaces exposed to water and steam. It describes the process of corrosion, the formation of scale, and the oxides of iron from which it forms. It addresses the primary types of corrosion found in boiler environments...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900231
EISBN: 978-1-62708-350-8
.... Oxynitrocarburizing involves introducing oxygen—in the form of steam, oxygen, or nitrous oxide—in a controlled manner into the process chamber. The process gas must be carefully selected. Steam may cause problems with electrical equipment such as power feedthroughs and control systems. Nitrous oxide or oxygen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940451
EISBN: 978-1-62708-302-7
... of Diffusible Hydrogen in Steels (Barnacle Electrode) G 1, Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens G 2, Test Method for Corrosion Testing of Products of Zirconium, Hafnium, and Their Alloys in Water at 680 °F or in Steam at 750 °F G 3, Practice for Conventions Applicable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... if not handled properly. Water is inexpensive and is a very effective quenching medium. However, it is susceptible to formation of steam pockets that may result in soft spots on the quenched workpieces. This is particularly likely if the temperature of the quenching system is not closely controlled...