Scrap preheater
Scrap preheater means a vessel or other piece of equipment in which metal scrap that is to be used as melting furnace feed is heated to a temperature high enough to eliminate volatile impurities or other tramp materials by direct flame heating or similar means of heating. Scrap dryers, which solely remove moisture from metal scrap, are not considered to be scrap preheaters for purposes of this subpart.
Source
40 CFR § 63.7765
Scoping language
Terms used in this subpart are defined in the Clean Air Act (CAA), in 63.2, and in this section.