Trains and locomotive railcars operate in harsh environments that degrade the exterior paint and protective finish over time. For the interior of the tank and hopper cars, the linings must provide protection from highly corrosive cargo, which can lead to heavy corrosion and premature coating failure. These vessels require durable and long-lasting finishes, as varying weather and cargo can strip away these protective coatings.
Most surface coating operations involve the manual application of paint with spray equipment inside a paint spray booth. A spray booth is a ventilated work chamber for containing the spray application of a surface coating onto a work piece. The ventilating air is frequently heated or cooled and then drawn across the entire cross section of the booth as uniformly and free of turbulence as possible. The ventilating air entrains the overspray (wasted paint that forms a fine dust after failing to adhere to the work piece) and solvent vapors and carries them through the exhaust stack to the atmosphere.