Cathodic Protection

Historic Corrosion Tools Tell the Story of Early Corrosion Control

A collection of antique instruments illustrates the rich history of the East Bay Municipal Utility District’s corrosion department.

Electricity—Electrons vs. Conventional Current

Diagram of an electrochemical (corrosion) cell. Figure reproduced from the NACE Cathodic Protection—Tester (CP1) training manual.

Cathodic Protection in the Water Utility Industry

Cathodic protection has been a recognized technology for buried metallic pipelines, but hasn’t been widely used in the water industry.

Study: Graphene Technology Boosts Performance of Epoxy Coatings

Initial test results have shown higher corrosion resistance, increased mechanical strength, and better abrasion resistance when using epoxy resin-based coatings formulated with graphene.

Using Thermal-Sprayed Aluminum to Protect Deep Sea Steel Structures

Thermal-sprayed aluminum (TSA) coatings are applied on subsea assets to protect carbon steel (CS) from corrosion because they act as a barrier as well as provide sacrificial protection.

Retrofitting Wind Turbine Monopiles with Cathodic Protection

A strategy to provide wind turbine monopiles with a corrosion prevention system included resealing the J-tubes to prevent seawater flushing and installing a galvanic cathodic protection system inside the submerged section of the monopile.

Coupons for Cathodic Protection Evaluation of Mixed-Metal Piping Systems

The measurement and interpretation of cathodic protection (CP) data in plants or other complex facilities present inherent challenges where mixed metals are electrically continuous within the protected structures’ CP system.

Ultrasonic Probe Tests Zinc Galvanizing Kettles

New probe technology developed from recent academic research can conduct safety-critical testing inside galvanizing kettles holding molten zinc at 450 °C.

An Alternative View of the Cathodic Protection Mechanism on Buried Pipelines

The application of CP polarizes steel in the electronegative direction, while raising the pH at the interface at the same time.

Installation Complete on First U.K. Long-Length Coated Rail Project

Zinc-rich coated rail, which protects in the most corrosive of environments, is being supplied in longer lengths and is seen as ideal for track environments, such as those in tunnels.

Assessing Galvanized Steel Power Transmission Poles and Towers for Corrosion

Generally speaking, galvanized steel can last for many years in nonaggressive environments, and typically does an excellent job of protecting steel when the structure is located in moderately corrosive environments where oxidizing conditions prevail.

Applying Cathodic Prevention to Electric Transmission Tower Foundations

A novel approach is presented regarding corrosion assessment and cathodic prevention of foundations for electric transmission towers in the Persian Gulf region.

The Science Behind It: Galvanic Cathodic Protection for Power Transmission Tower Grillage Foundations

Some unique capabilities of cathodic protection design methodology are showcased with grillage-type foundations for power transmission structures.

Impressed Current Anode Systems for Jetty Piling Protection

One of the areas where cathodic protection is commonly applied to marine structures for corrosion protection is the steel piling systems on jetties and piers. This article discusses the design and implementation of CP on a newly constructed jetty in Surabaya, Indonesia.

Key Indicators Can Reveal Signs of Concrete Parking Structure Corrosion

Experienced concrete maintenance and restoration specialists explain the unique challenges in protecting parking structures from a constant onslaught of environmental stressors and wear and tear, along with examples of successful repair techniques.