Cathodic Protection

Designing an ICCP System for the Hull of an Arctic Ice-Breaking Vessel

For many decades the maritime industry has depended on icebreaker ships to forge a path through ice-covered waters so other ships can safely navigate the trade routes in the polar regions of the world. The effects of breaking ice can be extremely destructive to the steel hull of an ice-breaking vessel. Ice abrasion can damage the external hull’s protective coating, which leads to exposure of bare steel and rapid corrosion. To protect the hulls of these ships from corrosion, a combination of protective coatings and impressed current cathodic protection (ICCP) is often used.

Cathodic Protection for Water Mains in a High-Consequence Transit Corridor

To protect pipelines in a transit corridor where they crossed underneath the light-rail tracks, construction of the line included retrofitting the pipelines with a precast concrete box culvert casing and installing an impressed current cathodic protection (ICCP) system.

Deep Anode Bed in a Flowing Artesian Aquifer

In April 2013, the Las Vegas Valley Water District attempted to install a 500-ft (152-m) deep anode bed for an impressed current cathodic protection system. Before the anodes could be installed, ground water began flowing out of the top of the hole at ~50 gal/min (189 L/m).

Dynamic Pulsed Eddy Current Inline Inspection Technology Assesses Unpiggable Pipelines

To assess internal and external corrosion in piping configurations that are unpiggable or difficult to assess, a novel dynamic pulsed eddy current technology integrated with a robotic inline inspection tool was developed that is capable of internally inspecting metallic pipes.

Zinc-rich Epoxy Primer Uses Glass Spheres, Zinc Activator to Enhance Corrosion Resistance

A novel, organic zinc-rich primer coating technology relies on a combination of zinc dust, hollow glass spheres, and a proprietary activator to provide cathodic protection with greatly improved mechanical properties (crack resistance) and adhesion.

Results Posted for NACE International’s 2016 Annual Corrosion Career Survey

Average annual salaries in 2016 are reported for corrosion professionals in the United States, Canada, United Kingdom, and Europe. A slight gain was seen for the United States and United Kingdom, while a larger increase was recorded in Canada.

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.

Corrosion Basics: Effects of Coating on Corrosion and Cathodic Protection

The application of a coating can greatly reduce the amount of current required to obtain cathodic protection. In addition, good coating can significantly improve attenuation characteristics along a pipeline.

Stress Corrosion Cracking Led to Canadian Pipeline Rupture, Fire

Investigators determined that the pipeline ruptured due to stress corrosion cracks on the outside surface, and the polyethylene tape coating applied to the pipe’s exterior surface as an anticorrosion technique had deteriorated over time.