Cathodic Protection

IMPACT Study to Provide Tools for Corrosion Management

NACE International’s International Measures of Prevention, Application, and Economics of Corrosion (IMPACT) study is nearing completion and will be released in March 2016. A segment of the report focuses on the Corrosion Management System Framework and how a company can incorporate one into its own program.

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.

Unmanned Aircraft Collect Cathodic Protection Readings on Remote Pipelines

Unmanned aerial vehicles (UAVs), are being utilized more and more in various industries to safely and efficiently inspect critical assets and infrastructure that would otherwise be difficult to access.

Internal Cathodic Protection Retrofit for Auxiliary Cooling Water Pipes

A combined-cycle power plant in Asia utilizes seawater as auxiliary cooling water (ACW). The carbon steel ACW pipe was lined with coal tar epoxy. After six months in operation, the ACW pipe started leaking due to internal corrosion. A retrofit impressed current cathodic protection (ICCP) system was installed.

Remote Monitoring System Tracks Cathodic Protection and Sensor Data

There is a need at many remote oil and gas field sites for data typically collected by specialized sensors. To meet this need, a remote CP monitoring platform was developed that combines a dedicated two-channel CP rectifier/test station monitoring device and a dedicated two-channel sensor/transducer monitoring device into one unit.

Using Pipeline Coatings with Cathodic Protection

During the service life of a pipeline, the coating has to maintain its integrity under operating environments and in the presence of cathodic protection (CP). A coating that exposes bare metal areas renders the pipe surface susceptible to corroding species, and a functional CP system will be required. This article discusses the basic principles of corrosion protection with coatings and CP, and the attributes of an effective pipeline coating.

NACE International’s IMPACT Breaks New Ground in the Study of Corrosion Management

NACE International’s new IMPACT emphasizes how to integrate corrosion technology with management systems to optimize corrosion decisions. For findings related to the pipeline industry, three IMPACT study and pipeline experts answer a series of questions.

Alternating Current Interference Mitigation for a Cathodically Protected Pipeline

It is becoming more common for crude oil or gas pipelines to share their rights-of-way with high-voltage alternating current (AC) power lines. The integrity of AC mitigation facilities is crucial for personnel safety and continued operation of pipelines with effective cathodic protection.

Corrosion Basics: Protecting Fixed Structures in Seawater

Structures such as steel bulkheads, steel piles supporting piers or wharfs, offshore drilling platforms, and other similar structures may be cathodically protected with either sacrificial galvanic anode systems or impressed current systems.

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.

Risk Assessment Justifies Cathodic Protection Retrofit on an Aging Pipeline

As pipelines age, it is important to verify the effectiveness of the coating and cathodic protection systems that protect them against external corrosion, and implement remedial actions if necessary.

Teaching Cathodic Protection with an Outdoor Pipeline Integrity Lab

A major U.S. university is using funding from Phillips 66 to develop a new outdoor pipeline integrity lab, which will include buried pipe with an active rectifier to simulate real-life activities.

Corrosion Behavior of UNS S31083 Duplex SS in China’s Yardang Soil

Due to the high carbon dioxide (CO2) and chloride content in natural gas produced by a gas field in Western China, a high-performance duplex stainless steel was chosen for gas gathering and transmission piping in this area.

Corrosion Basics: Close-Interval Potential Surveys

The principle of a close-interval potential survey is to record the pipe-to-soil potential profile of a pipeline over its entire length by measuring potentials at intervals that do not significantly exceed the depth of the pipe.