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steam header pipes

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Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 919-929, October 25–28, 2004,
... steel. Results are presented for tubes and pipes cast with a variety of surface conditions. In addition, detailed results are provided on the effects of alloying elements on creep and oxidation resistance. bending boiler tubes creep rupture strength ferritic stainless steel headers...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1025-1037, October 22–25, 2013,
... current designs. Inconel alloy 740H (UNS N07740) is a new nickel- based alloy that serves as a candidate for steam header pipe and super-heater tubing in coal-fired boilers. Alloy 740H has been shown to be capable of withstanding the extreme operating conditions of an advanced ultra-super-critical (AUSC...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 265-275, October 22–25, 2013,
... Abstract Inconel alloy 740H is designated for boiler sueprheater/reheater tubes and main steam/header pipes application of advanced ultra-supercritical (A-USC) power plant at operating temperatures above 750°C. Microstructure evolution and precipitates stability in the samples of alloy 740H...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 215-229, October 22–25, 2013,
... 20.4 Figure 8. As-extruded 740H steam header pipe measuring 14.9 inches (378mm) x 3.47 inches (88mm) x 34.5 feet (10.5m). Figure 9. Charpy impact results (10mm x 10mm samples) for solution annealed and aged pipe produced from ingot 1-A, after exposure at the indicated temperatures and times. 221 Figure...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 916-932, August 31–September 3, 2010,
...-forged it at 5:1 and 12:1 reductions, to assess feasibility of the alloy as a wrought advanced stainless steel for potential use as steam headers and piping for A-USC power plant applications. The hot-forged alloy has a recrystallized grain structure 6-9 times finer than the as-cast dendritic structure...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 418-428, October 15–18, 2024,
... fabricated headers is finally described. The findings in this paper serve as a guideline for FAC risk assessment, FAC investigation and mitigation, and service in compact heat recovery steam generators. 418 INTRODUCTION Flow Accelerated Corrosion or FAC Flow Accelerated Corrosion or FAC is a corrosion...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 284-295, October 15–18, 2024,
... project scope included fabrication of full-scale superheater / reheater components and subassemblies (including tubes and headers), furnace membrane walls, steam turbine forged rotor, steam turbine nozzle carrier casting, and high temperature steam transfer piping. Materials of construction included...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1476-1486, October 21–24, 2019,
... (3500 psia).The A-USC ComTest project scope includes fabrication of full scale superheater / reheater components and subassemblies (including tubes and headers), furnace membrane walls, steam turbine forged rotor, steam turbine nozzle carrier casting, and high temperature steam transfer piping...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1006-1015, October 22–25, 2013,
... and reheater headers were designed assuming steam conditions of 35MPa/700ºC/720ºC (main steam 1012 Figure 11: Narrow gap HST butt welding of superheater header pipe of HR6W (OD558.8, WT138) (A) GTAW socket welding (B) GTAW orbital welding (C) SMAW socket welding Figure 12: Stub-header socket welding and stub...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 260-270, October 11–14, 2016,
... OF THE HEADER Fig. 2 shows the drawing of the header and its installation in the test loop. A thick-walled pipe (body) was the basis of the header subjected to the main steam. The component had five bypasses (thin-walled boiler tubes that have been welded with their respective entry and exit openings...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 161-168, October 11–14, 2016,
... header. The paper gives details of the material selection process, joint design and the verification process used for the joint. austenitic stainless steel coal fired boilers creep strength materials selection pipe transition joints precipitation hardenable nickel superalloys thermal...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 190-201, October 22–25, 2013,
... joint and bent part properties, and weld cracking susceptibilities of Ni-based alloys such as HR6W, HR35 and two types of Alloy617 (High B and Low B) pipes were evaluated. Additionally, two types of HR6W header mock-ups and a HR6W tube element mock-up were fabricated. With the exception of Alloy617...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 326-335, October 11–14, 2016,
... Abstract This paper reports the performance of HR6W iron-nickel based alloy and 617B nickel based alloy which are the candidate material for high temperature reheater outlet header of advanced secondary reheat ultra-supercritical unit boiler with reheat steam 653 °C, and analysis the applicable...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 1-11, October 11–14, 2016,
... superheater, thick-walled cycling header, steam piping, steam turbine (11 MW nominal size) and valves. Current plans call for the components to be subjected to A-USC operating conditions for at least 8,000 hours by September 2020. The U.S. consortium, principally funded by the U.S. Department of Energy...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 615-626, October 22–25, 2013,
... Abstract Grade 92 steel has been widely applied in the power generation industry for use as steam pipes, headers, tubes, etc. owing to a good combination of creep and corrosion resistance. For the welding of thick section pipes, a multi-pass submerged arc welding process is typically used...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 995-1013, August 31–September 3, 2010,
... boiler efficiencies, there is a need for superior weld metals and joint designs that optimize the economy of modern boilers and reduce reliance on austenitic materials for steam headers and piping. EPRI has developed a new filler metal, EPRI P87, to enhance the performance of DMWs. Previous work has...
Proceedings Papers

AM-EPRI2007, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fifth International Conference, 564-581, October 3–5, 2007,
... on strength, corrosion, creep properties and thermal stability during service are requested for high temperature steels for boilers, steam lines and headers in Ultra Super Critical (USC) Power Plants. Tenaris has accumulated a great experience in the production of C-Mn and Cr-Mo ferritic/martensitic grades...
Proceedings Papers

AM-EPRI2007, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fifth International Conference, 927-939, October 3–5, 2007,
... Abstract Simplified or reference stress techniques are described and demonstrated for high temperature weld design and life assessment. The objective is the determination of weld life under steady and cyclic loading in boiler headers and piping systems. The analysis deals with the effect...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 155-166, October 22–25, 2013,
... subjected to thermal cycles and is in operation since November 2012. First results of measurements and numerical calculations for a pipe bend (static loading) as well as pipes and a header (thermal cycles) are presented. Alloy 263 Alloy 617 A-USC plants creep properties low cycle fatigue...
Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 837-854, October 25–28, 2004,
... Chemistry Alloy 617, a variant of Inconel 617 that has been dubbed “CCA 617.” The CCA 617 was represented in both thick plate and tubular product forms, but the stainless steel was only available as tubing. Issues that might be encountered in fabricating advanced boiler headers and piping were addressed...