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API SPEC 12K

2008 Edition, October 1, 2008

Complete Document

Specification for Indirect Type Oilfield Heaters



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G12K08
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Product Details:

  • Revision: 2008 Edition, October 1, 2008
  • Published Date: October 2008
  • Status: Active, Most Current
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 48
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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.

Termination of a heater coil shall be at the first bevel when coils are furnished beveled for welding, or the face of the first fitting when fittings are furnished as the inlet or outlet connection to the coil. All fittings and valves between the inlet and outlet of the coil are to be considered within the coil limit.

Heaters outside the scope of this specification include steam and other vapor generators, reboilers, indirect heaters employing heat media other than water solutions, all types of direct fired heaters, shell-and-tube bundles or electrical heating elements, and coils operating at temperatures less than –20°F.