ASTM D4618-92(2017)

Detail information

Designation: ASTM D4618-92(2017)

Publication date: 01/09/2017

Pages: 5

Country: American technical standard

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Anotation

This specification covers the design and fabrication of metal components for flue gas desulfurization equipment, including absorber, tanks, chimney liners, ductwork, and associated equipment intended for use in protective lining applications, that are to be lined for corrosion or abrasion resistance, or both. It does not however cover the structural performance of the components and the use of metallic linings. Each of the components shall be designed in such a way that it conforms to the engineering requirements for rigidity wherein the effects of pressure, wind, seismic, and other design loads shall be considered; accessability to welding, grinding, surface preparation, and lining application; shell penetrations; appurtenances inside components such as agitators, anti-swirl baffles, gaging devices, internal piping, ladders, and support brackets; and structural reinforcement members and supports. All internal welds shall be continuous without imperfections and the degree of weld preparation prior to lining shall depend on the type of lining to be applied. Riveted joints and internal bolted joints shall not be used while lap bolted joints shall be avoided whenever possible. Intermittent or spot welding shall not be permitted as well.


Keywords:
absorbers, chemical resistant, coating, components, design, desulfurization, ductwork, fabrication, FGD system, flue gas, lining, tanks, welds,, ICS Number Code 13.040.40 (Stationary source emissions), 27.100 (Power stations in general)