Corrosion monitoring is one of the basic functions required for safe and efficient industrial operations. This
primer presents an overview of the various corrosion measurement technologies that are available for
monitoring industrial process systems. They range from non-direct/non-intrusive to direct/intrusive techniques
and include everything from simple corrosion coupons to sophisticated electrochemical techniques. These
systems should be selected to meet the specific needs of particular plant requirements to minimize downtime
and equipment failures. Major sources of corrosion in industrial processes include dew point corrosion in
overhead systems where an acidic condensate precipitates from a vapor phase. Other conditions that require
monitoring include high temperature non-aqueous corrosion often involving hot combustion gases containing
sulfur impurities, aqueous sulfide corrosion that can produce hydrogen charging and cracking of steels, and
amine solutions used in gas processing equipment. Each process poses a different set of conditions that must
be analyzed.