Corrosion of Underground Metallic Structures: Cathodic Protection System for Underground Corrosion Mitigation
[Presentation PDF]
IEPA ID#: 5163
Room: A119
Time: 9:00 - 9:45AM CST
Presenter: Rogelio de las Casas, EN Engineering,

Moderator: John Schori

All buried or submerged metallic structures are susceptible to the effects of corrosion. Some of the factors that define the type of corrosion that is occurring are the soil characteristics, and configuration of the metallic structure. The primary method used to protect underground or submerged steel pipelines is the application of coatings to separate the pipelines from the surrounding environment. Accelerated corrosion is likely to occur at coating flaws as corrosion is concentrated over a small area of exposed metal surface at these locations. Cathodic Protection (CP) is used in conjunction with pipeline coatings to mitigate corrosion. A properly designed, maintained, and monitored CP system will mitigate corrosion on the external surface of a pipeline and extend the useful in-service life of a pipeline system or other underground or submerged metallic structure for the design life of the CP system.