4/12/2023 0 Comments Steel stackNew stainless steel anchors were welded to the stainless steel wire mesh sheets according to the unique specifications provided by the client. The interior surface of the steel stack was sandblasted in preparation for the new refractory. IA began the repair process by removing the existing reinforced gunite liner and old wire mesh, then emptying the debris. This cementitious refractory solution is lightweight and provides excellent high temperature resistance, protection from both abrasion and corrosion, with great insulating properties. The client ended up choosing the 2” LHV 1:2:4 liner solution best suited to the structure specifications listed by the stack manufacturer. Organic Linings (refractory concrete, geopolymer concrete)ĪSME STS-1-2021: Steel Stacks is available on the ANSI Webstore.In order to determine the best solution for this type of stack, IA had proposed three different liner options, detailing the advantages and conditions of each one and offering expert recommendations.Coatings (Vinyl Coatings, Phenolic Coating System, Coal-Tar Epoxy Coating).Stiffeners and Structural Bases and/or Frame Work.Material specifications are intended to cover single or double wall stacks that are free-standing and self-supporting, guy or cable supported, or supported by structural steel braces or framework. Heat Loss or drop in gas temperature (ambient conditions, insulations and linings, film coefficients, heat loss calculations, thermal expansion, appurtenances) as heat is transferred through the stack wall.Available draft (natural draft, draft losses).Size Selection (height, diameter, shape) for the gas passage.Steel Stack Design and Materials in ASME STS-1-2021 Mechanical Design of Steel Stacks Outlines for areas requiring maintenance and inspection following initial operation.Areas regarding fabrication and construction.Requirements for climbing and access based upon current Occupational Safety and Health Administration (OSHA) standards.Requirements for lighting and lightning protection based upon existing building and federal codes.Guidelines for the selection of material, linings, and coatings.Considerations for wind- and seismic-induced vibrations.Considerations for the mechanical and structural design.Steel stacks that are guyed or to certain aspects of tower stacks.ĪSME STS-1-2021 Covers Many Facets of the Design Control of Steel Stacks:.Single- and multiple-walled steel stacks, either of which can be lined or unlined.This standard applies to the following types of steel stacks: This standard is intended to provide design guidelines for stacks containing nonflammable gases, such as combustion exhaust gases at low internal pressure. Steel stacks are a solution used for releasing combustion gases into the atmosphere, avoiding severe damage to an air pollution control device or other equipment. The ASME STS-1-2021 Standard for Steel StacksĪSME STS-1-2021 applies to steel stacks, those stacks where the primary supporting shell is made of steel. Transportation (trains, bridges, tunnels, planes).Mechanical equipment (tools, machines, weapons, electrical appliances).Infrastructure (bridges, tunnels, parks).Construction (buildings from houses, schools, and skyscrapers).Steel is the most recycled material in the world because once it is made, it can be used forever. It releases no harsh chemicals and toxins. The metal is also widely used because it is durable, flexible, low cost, and sustainable. Its high tensile strength enables steel to withstand severe weather events like high winds, corrosion, earthquakes, and hurricanes. Steel is an alloy of iron and other elements. Why is Steel the Most Used Metal in the World? ASME STS-1-2021: Steel Stacks covers consideration for the design of steel stacks. The exhaust stack, made out of steel, removes the combustion gases from heat exchangers to be safely vented outside.
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