Code for process heaters


Thread Starter

David Nimmons

I am in the process of making modifications to our gas fired hot oil heater and am trying to find the applicable codes. I was given NFPA 8502, which covers multiple burner boilers, but, it states that process heaters are not covered by the standard.

"1-1.4 Furnaces such as those of process heaters used in chemical and petroleum manufacture, wherein steam generation is incidental to the operation of a processing system, are not cov-ered
by this standard."

Crystal Majercik


I would begin by placing the responsibility on the Boiler Manufacturer. Additionally, there are federal registered documents on Boiler and Pressure Vessel Codes. You may try contacting Chromalox at 412-967-3800 and speak with Don Cunningham. If you cannot get assistance there, contact their Ogden, Utah manufacturing center where they manufacture various water and oil boilers.

Best of luck,

Paul Gruhn, P.E. Moore Process Automatio

What industry are you in? If it's refining, there is:

API RP 556, 1997: Instrumentation and Control Systems for Fired Heaters and Steam Generators