API Spec 12K: 2008 Specification for Indirect Type Oilfield Heaters

American Petroleum Institute (API). Eighth Edition, October 2008. Effective Date: April 2009. 40p. This specification covers minimum requirements for the design, fabrication, and shop testing of oilfield indirect type fired heaters used in the production of oil, gas, and their associated fluids. They are usually located at some point on the producing flow-line between the wellhead and pipeline. Heater components covered by this specification include the pressurized coils, the shell, heater bath, firetube and the firing system