Cathodic Protection

Corrosion Service has focused on providing corrosion prevention design, engineering, supply and field services to the pipeline industry

About Cathodic Protection

Cathodic Protection is a major weapon against corrosion.

Cathodic protection systems protect a wide range of metallic structures in various environments. Common applications are: steel water or fuel pipelines and steel storage tanks such as home water heaters; steel pier piles; ship & boat hulls; offshore oil platforms and onshore oil well casings; offshore wind farm foundations and metal reinforcement bars in concrete buildings and structures. Another common application is in galvanized steel, in which a sacrificial coating of zinc on steel parts protects them from rust.

Key features

  • * Larger effective protected area.
  • * Longer-term corrosion protection.
  • * Easier control and monitoring.

Suitable industries

Cathodic protection is often used to mitigate corrosion damage to active metal surfaces. It is used all over the globe to protect pipelines, water treatment plants, above and underwater storage tanks, ship and boat hulls, offshore production platforms,reinforcement bars in concrete structures and piers, and more.

Close Interval Potential Survey (CIPS)

Close Interval Potential Surveys (CIPS) is an above ground inspection method and is a part of a structured External Corrosion Direct Assessment (ECDA) process. CIPS is used to inspect metallic pipelines in order to determine the efficacy of their cathodic protection (CP) system. A close interval survey can help detect some coating defects.

Direct Current Voltage Gradient (DCVG) Survey

A direct current voltage gradient (DCVG) survey is a type of survey method that is used to assess the efficacy of corrosion protection, particularly on structures buried underground. This is highly useful in the natural gas and oil industries, as this technique is used to trace coating faults as well as determine the deficits in the strategies that are used to control corrosion.