This European Standard is applicable to thermal cleaning systems for exhaust gas from surface treatment equipment/systems as given below in which the concentration of exhaust gas to be cleaned (for the purpose of this European Standard, named """"process gas"""") at the inlet to the thermal cleaning system is safely limited within the concentration ranges given in 5.2.2.2.Surface treatment equipment includes:- dryers according to EN 1539, curing equipment;- flash-off areas;- coating plants (e.g. closed spray booths, open fronted spray booths);- machines using flammable solvents for the pre-treatment and cleaning of products or equipment (e.g. barrels, tins,