Preparation, Installation, Analysis, and Interpretation of Corrosion Coupons in Hydrocarbon Operations

This standard outlines procedures for preparing, installing, and analyzing metallic corrosion coupons. Factors considered in the interpretation of results obtained from these corrosion coupons are also included for the use of oil, gas and service industry personnel.

In this revision, many lengthy paragraphs were modified technically, grammatically, broken into new paragraphs (with or without additional information) for better clarity, understanding and ease of reading (modifications include tables, equations and Appendix A [nonmandatory]). The major change to the standard is removal of the “Severe” category from the Qualitative Categorization of Carbon Steel Corrosion & Pitting Rates (Table 2), as “High” itself provides the undergoing corrosion risk for process streams.

Additionally, emphasis on photography of corrosion coupons is highlighted in this revision with the inclusion of new Appendix B (nonmandatory), showing coupons before/after cleaning, corrosion morphology, relevant data, findings and conclusion; to provide supplementary information and guidance for the user of this standard. Also, this revision highlights the importance of accessibility for servicing/retrieval of corrosion coupons or probes data collection and included access platform example photographs.