History of Cathodic Protection
History of cathodic protection & factors determining current requirement in Oil & Gas, Chemicals, Fertilizers, Petrochemicals, Power Plants, Infrastructure, etc.
Cathodic protection was first described by Sir Humphry Davy in a series of papers presented to the Royal Society in London in 1824. Sir Humphrey Davy’s work on protecting the copper sheathing on wooden hulls in the British Navy by sacrificial zinc or iron anodes is generally considered to be the earliest example of practical cathodic protection.
Thomas Edison experimented with impressed current cathodic protection on ships in 1890 but was unsuccessful due to the lack of a suitable current source and anode materials.
In the USA by 1945, the use of CP was commonly applied to the rapidly expanding oil and natural gas industry. In the UK, CP was applied from the 1950s onwards and Cathodic Protection Company Limited was established in this period, pioneering its use in the UK.
CP is now well established on a large variety of immersed and buried metallic structures as well as reinforced concrete structures and provides effective corrosion control.
Important cathodic protection standards and guidelines
history of cathodic protection
Concept of cathodic protectionr
Cathodic protection is an electrochemical means of corrosion control.
The objective of cathodic protection is to ensure that the metal surface becomes cathodic (Electronegative) of an electrochemical cell.
The potential difference between anode and cathode that causes corrosion current to flow is neutralized by exte
al current which eliminates the potential difference between anode and cathode and corrosion current ceases to flow.
The oxidation reaction at anode that releases electrons are consumed at cathode to produce hydrogen and OH-.Corrosion current is reduced as exte
al current polarizes cathode in electronegative direction and as cathode potential becomes equal to or more of anode open circuit potential, the corrosion stops.
Oxidation reaction at anode: Fe â Fe +++ 2e-
Reduction reaction at cathode: 2e-+ 2H+â2HâH2âor H2O +2e-+½ O2â2(OH-)
Cathodic protection provides current through exte
al anode to polarize the structure in electronegative direction. Thus exte
al anode is consumed to protect the structure
Further reading
Further Reading
Article
The Call Center's Evolving Role: Orchestrating Returns, Fulfillment, and Total CX
Introduction There was a time when the call center was seen as a place where phones rang endlessly and agents simply answered questions. That picture has changed dramatically. Today the modern call center sits at the center of customer experience, quietly coordinating returns, managing fulfillment concerns, and shaping how customers feel about every interaction with a brand. Instead of reacting to problems, teams now guide customers through complex journeys. Their role has gr
February 6, 2026
Article
How White Jacobs Is Raising Standards Among Credit Repair Companies in Houston and San Antonio
In todayâs financial landscape, credit scores play a major role in determining access to loans, housing, and even employment opportunities. For individuals facing late payments, collections, or inaccurate credit reports, rebuilding credit can feel overwhelming. This is why many people turn to professional services for guidance. Among the growing number of Credit Repair Companies in Houston and providers offering Credit Repair San Antonio solutions, White Jacobs continues to
February 6, 2026
Article
PAX A30 Review 2026: Is It the Best Android POS Terminal?
Choosing the right POS terminal is more important now than ever. With customer expectations rising and payment methods changing quickly, businesses need a device that works fast, stays secure, and handles different payment types. The PAX A30 is a popular Android POS terminal that has gained attention for its modern design and strong features. In this review, we look at how well it performs in real life, what makes it stand out, and whether it can truly be called the best Andr
January 17, 2026
Article
A Guide for Rack Mount Server Cabinet Installations
Installing a rack mount server cabinet is an important task for anyone setting up a server room or a data center. These cabinets are designed to hold servers, networking devices, and other hardware safely and in an organized way. A well-planned installation helps improve airflow, manage cables neatly, and secure equipment, which makes the server room safer and more efficient. Whether youâre setting up a small office server or a larger business data center, knowing how to in
January 16, 2026