Last update: June 26, 2015
Most flue gases produced by the combustion of fuels contain contaminants that can condense into sulfuric, sulfurous, or hydrochloric acid droplets. When these aggressive acids condense on carbon and stainless steels in convection sections, flue duct and stacks, the result can be severe and rapid dew point corrosion. To better avoid flue gas dew point corrosion, one should keep the surface metal temperatures of exposed equipment above the dew point, or if one need to protect cooler surfaces, apply a coating that is resistant to the acidic condensate and will withstand the temperatures to which it is exposed.
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May/June 2005 Inspectioneering Journal
By John Reynolds at Intertek
Most all flue gases produced by the combustion of fuels contain contaminants that can condense into acid droplets. The amount of contaminants will determine the concentration of the acid droplets.
If you are developing a mechanical integrity program, or you would like to optimize your existing mechanical integrity program, do you have qualified MI consultants to meet your regulatory needs? If you already have a sound, defensible MI inspection system in place, do you have qualified and experienced personnel maintaining your program?