API RP 939-C - Guidelines for Avoiding Sulfidation (Sulfidic) Corrosion Failures in Oil Refineries

Last update: Jan 16, 2017

API RP 939-C, Guidelines for Avoiding Sulfidation (Sulfidic) Corrosion Failures in Oil Refineries, First Edition, is a recommended practice developed and published by the American Petroleum Institute (API) that provides guidance on avoiding sulfidation corrosion in oil refining operations. This RP is directed at integrity professionals managing hydrocarbon process streams containing sulfur compounds, with or without the presence of hydrogen, which operate at approximate temperatures between 450F (230C) and 1000F (540C).

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Is Your Killed Carbon Steel Resistant to  High Temperature Sulfidation?
March/April 2014 Inspectioneering Journal
By Marc McConnell, P.E. at Versa Integrity Group, Gerrit M. Buchheim, P.E. at Becht Engineering Co., Inc., and Josh Yoakam at Holly Refining and Marketing - Tulsa, LLC

High temperature sulfidation is probably the most well- known corrosion mechanism in the oil refining industry because it occurs in large sections of the refinery.

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