Cathodic Protection

Isolating Joint Failure for Cathodic Protection

This article discusses testing, analysis, and root cause identification of a leak occurred on an isolating joint installed on an oil transfer pipeline only seven months into operation.

Survey Instrument Offers Enhanced Data on Pipe Conditions

The new surveying instrument measures and records both close interval potential survey (CIPS) and direct current voltage gradient (DCVG) data, along with corresponding GPS coordinates from the field.

The Next Generation of Double Bottom Tank Cathodic Protection

A new method has been developed to allow for cathodic protection of the upper/new tank bottom in a double bottom tank.

Pocket-Sized Cathodic Protection Interrupter for Field Use

The pocket-sized cathodic protection (CP) interrupter records continuous waveforms during close interval surveys and provides accurate and defensible data. The technology includes both high-speed waveform datalogging and automated waveform analysis.

Cost-Effective Cathodic Protection for Water Infrastructure

For equipment where coatings are the primary method of corrosion prevention, cathodic protection (CP) can provide a secondary method of protection to areas with coating damage or poor coverage.

Perforated Offshore Monopile for Corrosion Control, Marine Habitats

Recent field experiments demonstrated that a cathodically protected perforated monopile structure could create an environment with more favorable corrosion mitigation, air quality, and water chemistry compared to a sealed structure. A newly designed perforated offshore monopile system could help mitigate corrosion within the often flooded interiors of offshore wind turbine support structures.

Roundtable on the Future of Corrosion Control: Part 3

In the final part of this series, three industry panelists share their predictions on where the corrosion industry is going in the next 25 years and beyond.

Corrosion in Alaskan Infrastructure

Alaska is home to many distinct environments, with each presenting its own challenges when designing for corrosion control.

Iridium—The Ultimate in Corrosion Resistance

Iridium is a hard, brittle member of the so-called platinum group of metals in the periodic table. As an alloying element, it increases the corrosion resistance of titanium and palladium. We know that corrosion is a reaction between a material and its environment, so why not have a look at the most corrosion resistant metal in the periodic table.

New Visions for CIPS and DCVG

New instrumentation technology in the pipeline survey industry has helped produce and deliver results for the pipeline surveyor, analyst, and operator.

2018 Deadline Nears for New U.S. Underground Storage Tank Rules

The third and final deadline for underground storage tank owners and operators to meet new federal requirements from the U.S. Environmental Protection Agency for spill, overfill, and corrosion protection is October 13, 2018.

Using Sacrificial Anodes in Reinforced Concrete Structures

The primary cause of deterioration of reinforced concrete structures is corrosion of the steel reinforcing bars due to chlorides.

Retrofitting an Offshore Jacket with Impressed Current Cathodic Protection

The North Cormorant oil and gas the platform is more than 35 years old, it still serves as a critical hub for major fields in the area. Several subsea surveys over the last several years, however, indicated a reduction in its corrosion protection via CP.

Protecting Concrete Wharves with Cathodic Protection

An impressed current cathodic protection system was installed and commissioned on several steel-reinforced concrete structures that support two of the Port of Brisbane’s wharves.

Challenges of Installing a New Pipeline

Once construction has commenced, several tasks are required to ensure a safe and successful pipeline installation with effective cathodic protection and mitigation of interfering current.