Editor's Choice

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.

Corrosion-Inhibiting Primer Helps Restore Historic Croatian Monument

A surface-applied corrosion inhibitor, designed to migrate through dense concrete structures and seek out the steel reinforcement bars in concrete, helped stop further corrosion on this iconic Croatian structure.

Corrosion Basics—Water Constituents

In water, the concentrations of various substances in dissolved, colloidal, or suspended form are typically low, but may vary considerably depending on the components and usage. For example, hardness values of up to 400 parts per million of calcium carbonate is sometimes tolerated in public supplies of potable water, whereas 1 ppm of dissolved iron would be unacceptable.

PHMSA: Weight on Keystone Pipeline Led to Coating Failure, Oil Spill

The installation of a weight on the Keystone oil pipeline in South Dakota upon its construction in 2008 appears to have caused mechanical damage to the coating, leading to a recent rupture and oil spill.

Thin Carbon Coating Reduces Carbon Corrosion in Water Electrolysis

Researchers have developed an alternative, less expensive anode material for alkaline water electrolysis, which they say promotes less carbon corrosion. The researchers say their new nanostructured catalyst can reduce the rate of carbon-induced corrosion often experienced in alkaline water electrolysis, used to produce hydrogen from renewable resources.

Corrosion Basics: Protecting Fixed Structures in Seawater

Steel structures such as bulkheads, piles, offshore drilling platforms, etc., may be protected with either sacrificial galvanic anode or impressed current cathodic protection systems.

Investigators Find Severe Corrosion in 2015 California Gas Leak

Independent investigators found extensive corrosion on the well casing that broke open at Southern California Gas Co.'s Aliso Canyon gas storage facility in October 2015. In the aftermath, engineering consultancy Blade Energy Partners was granted authority by the California Public Utilities Commission (CPUC) to conduct a root cause analysis of the metallurgical and fractographic aspects of the gas leak.

Corrosion Prevention Using Real-Time Data in Oil Fields

In corrosion monitoring of oil and gas fields, there are many techniques that can provide data. Modern high-resolution corrosion monitors, including electrical resistance probes, are available. These instruments can be installed in key locations and connected to a control room computer.

Corrosion Basics: Special Cathodic Protection Requirements for Specific Pipeline Applications

Most pipeline cathodic protection applications involve either galvanic anode or impressed current systems installed in earth for protection of external surfaces.

Linking Microbiologically Influenced Corrosion to Microbiological Activity Using Molecular Microbiological Methods

While there are solutions to mitigate microbiologically influenced corrosion, a big challenge is to make the connection between corrosion damage and the activity of microorganisms.

Academic Study Seeks Policy Changes After Flint Water Crisis

University researchers issued findings on policy problems that led to the Flint water crisis and recommended legal changes to mitigate future concerns, including better communication on issues such as corrosion controls.

Geopolymer Solution for Sulfuric Acid Corrosion at Wastewater Plants

In a recently issued paper, Austrian researchers from TU Graz and the University of Graz discuss new materials that prevent damage from the microbiologically influenced corrosion of concrete.

Corrosion Basics: Testing Protective Coatings

Coating operations of almost any size must include some type of meaningful test program.

Evaluating Internal Pipe Coatings with Electrochemical Impedance Spectroscopy

A new generation of high-temperature fusion-bonded epoxy coatings are being developed as a lower-cost alternative to alloy steels for protecting the internal surface of tubing, casing, flowlines, and pipelines.

Study: North American Waterways Becoming Saltier, More Alkaline

University researchers find significant increases in both salinization and alkalinization of U.S. streams and rivers, which can influence the water's corrosivity.