Technical knowledge on cathodic protection, infrastructure inspection, and asset integrity management, written by the Procainsa team with over 35 years of experience in the Oil & Gas and petrochemical sector.
Cathodic Protection vs. Anticorrosive Treatments and Coatings
Cathodic protection and anticorrosive treatments are often presented as alternatives, but in practice they serve distinct and complementary functions. We explain what types of coatings exist, their limitations, and when it is necessary to combine them with cathodic protection.
Cathodic Protection in Buried Pipelines and Gas Pipelines
Buried steel pipes and gas pipelines are among the facilities most exposed to corrosion. We explain why they need cathodic protection, how the system is designed, and what the difference is between protecting a local section and a large-diameter gas pipeline.
Differences between Sacrificial Anodes and Impressed Current
Sacrificial anodes and impressed current are the two active cathodic protection systems that exist. We explain how each one works, their real differences, and what factors determine which is suitable for each installation.
Differences between Passive and Active Cathodic Protection
Passive protection and active cathodic protection are not alternatives, but complementary. We explain what each one is, its limitations, and why most critical industrial installations combine both.
What is cathodic protection and how does it work?
Discover what cathodic protection is, how it works at an electrochemical level, and what types exist: sacrificial anodes and impressed current.
