Cathodic Protection

The application of cathodic protection (CP) for steel gas pipelines began in the 1930s. This technology was rapidly adopted by the oil and gas pipeline industry to protect the pipeline by applying -850 mV vs. Cu/CuSO4 in conjunction with polymeric coatings. Protecting the external surface of oil and gas pipelines by the application of cathodic protection is one of the requirements of the many standards, including CSA Z662.