1-20 of 22 Search Results for

Superheater headers

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 December 1989
Fig. 5.44. Level III assessment of superheater outlet headers ( Ref 76 ). More
Image
Published: 01 December 1989
Fig. 5.18. Sample life-consumption chart for superheater outlet header tees with four steam leads from a 350-MW, 16.5-MPa (2.4-ksi), 565/540 °C (1050/1000 °F) middle load unit ( Ref 26 ). More
Image
Published: 01 December 1989
Fig. 5.43. Preliminary issues and level I and level II assessments of superheater outlet headers ( Ref 76 ). More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... of a Heat Recovery Steam Generator Unit Background Details Repetitive failure in the form of leakage was observed in low-pressure superheater bottom header tubes. It was observed that water was leaking from a weld joint of the tube. Minor seepage at a couple of other places had also been reported...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430017
EISBN: 978-1-62708-253-2
... called risers and the other known as downcomers. The water-steam mixture moves upward through the risers, whereas the downcomers carry the water from the boiler drum to the inlet headers at the bottom of the waterwalls. From these headers, the water rises through the waterwalls of the furnace where some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
... in the low-temperature waterwall sections to austenitic stainless steels in the finishing stages of the superheater. Most of the header pipes are made of 1¼ Cr-½ Mo or 2¼ Cr-1Mo steels. For steam pipes, austenitic stainless steels occasionally have also been employed for supercritical conditions. Pipes...
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 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490383
EISBN: 978-1-62708-340-9
... in the boiler. In the case of superheater/reheater tubes, headers, and steam piping, creep strength and rupture strength are the foremost considerations. In addition, for tubes, fire-side corrosion resistance and steam-side oxidation resistance are necessary. For thick-section components, such as headers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430409
EISBN: 978-1-62708-253-2
.... Similarly, long-term service of superheater and reheater tubes at elevated temperatures results in the precipitation and coagulation of alloy carbides along the grain boundaries, leading to creep. In components such as headers and pipes, which are subject to high pressure and high temperature, creep occurs...
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 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
... of Final Inlet Coil Background Details The superheater final inlet header coil of a coal-fired supercritical boiler failed in the form of a burst opening. The failure occurred in two tubes of the final superheater inlet coil. The MOC of the superheater tube was in conformance with ASTM A213 T91...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... on the inner surface of the tube with weld porosity on account of corrosion ultimately led to leakage. Case Study 40—Failure Investigation of a Final Superheater Tube Background Details Failure was noticed at the weld joint in a final superheater tube connecting to the inlet header of a boiler during...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430087
EISBN: 978-1-62708-253-2
...-wall or waterwall tubes, superheater (SH) or reheater (RH) tubes, and economizer tubes ( Ref 4.1 ). A header is a thick-walled pipe penetrated by a number of tubes. These heavy-section components have to handle creep and mechanical fatigue, whereas for tubing applications, thermal fatigue is not a key...
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 November 2007
DOI: 10.31399/asm.tb.htcma.9781627083041
EISBN: 978-1-62708-304-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... corrosion, caustic gouging, and pitting External corrosion or fire-side corrosion: For example, waterwall fireside corrosion, superheater/reheater fireside corrosion, and acid dew point corrosion The process of oxidation of iron is known as rusting or corrosion . The interaction of steam...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
...) in a desuperheater inlet header (1000×) The classic failure of a tube or pipe subjected to internal pressure and exposed to temperatures that exceed the creep or rupture strength of the material is a fish-mouth rupture. This rupture occurs because the internal stresses are highest in the hoop...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490001
EISBN: 978-1-62708-340-9
..., corrosion resistance, weldability, corrosion-fatigue strength C, C-Mo, and C-Mn steels Headers Tensile strength, weldability, creep strength C, C-Mo, C-Mn, and Cr-Mo steels Superheater/reheater tubes Weldability, creep strength, oxidation resistance, low coefficient of thermal expansion Cr-Mo...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030292
EISBN: 978-1-62708-282-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490059
EISBN: 978-1-62708-340-9
... stresses; and r is the radial distance. Paterson, Rettig, and Clark have shown good agreement between the long-term steady-state stress distributions calculated by the Bailey equations and by finite-element techniques for superheater tubes ( Ref 66 ). Simplified methods based on a “reference stress...