Materials Selection & Design

Crawling Robot System to Detect Corrosion Under Insulation

Case studies were recently conducted to test the ability of a robotic system to potentially perform corrosion under insulation (CUI) inspections in oil, gas, and petrochemical environments.

Researchers Suggest New Method to Create Corrosion-Resistant Alloys

A new study suggests that a better protective oxide scale can be achieved in high-temperature Al alloys by controlling the size distribution of reactive element particles. These types of alloys are prevalent in many industrial sectors and applications.

Some Corrosion and Metallurgy Issues in Coal Mines

Although corrosion is a common problem coal in mines, as are material failures, there has been limited documentation of these issues in the literature or at conferences.

New Ultrasonic Rolling Scanner for NDT of Concrete Structures

Funded by the European Commission, this new project involves the design of a portable, three-dimensional ultrasonic scanner for the nondestructive testing and evaluation of concrete in bridges and other building structures.

Study Examines Corrosive Soil Conditions Behind Water Main Breaks

Highlights of the study include data on pipe material break rates; the analysis of age and corrosion in failure modes; observations on pressure, delivery demands, and the effects of soil corrosivity; and new metrics for pipe replacement rates.

University Develops Adjustable Atmospheric Corrosion Test Rack

The design of the modular corrosion test rack by University of Alaska Anchorage researchers allows it to be adjusted to three different exposure angles. This rack helps isolate corrosion-inducing variables in cold climates and their primary effects on corrosion.

Corrosion Damage Repairs to the Arvida Aluminum Bridge

During its first 34 years in service, Canada’s Arvida Aluminum Bridge sustained some corrosion damage that required work. After a further ~30 years in service, the bridge was inspected to determine the effectiveness and longevity of that repair work. This article describes the corrosion damage, the repair work, and the current condition of the bridge.

Testing Corrosion-Resistant Alloys for Use in Geothermal Power Plants

Utilizing the energy potential in high-power geothermal wells can be expanded with materials that withstand the extreme environmental conditions.

The Humble Building Material that Shelters Millions Across the Globe

Corrugated iron has been and continues to be an invaluable building material that deserves to be taken seriously. It shows that steel can be simply and cheaply formed to a useful shape, protected from corrosion by a range of coatings, and made accessible to citizens in all corners of the globe.

Diagnostic Study of 10-inch Duplex Stainless Steel Flowline Weld Failure

This article discusses the failure investigation performed for a major operator in the Middle East on duplex stainless steel (DSS) flowline welds. The subject flowline was used intermittently since 1984 in an extreme sour service chloride-containing corrosive environment.

Water Repellency Technology Mitigates Corrosion Under Insulation Risk

The hydrophobic WR-Tech additive leads to stone wool, mandrel-wound pipe sections with significantly less water absorption relative to industry standards; faster drying rates; and durability over a wide range of potential CUI temperatures.

Neighborhood—An Influential Factor for Material Damages

This article highlights the impact of routine surrounding conditions as well as unusual neighborhood events on the integrity of process equipment and piping.

Study: Microbial Corrosion Led to California Gas Leak

An investigative report into the 2015 blowout of a natural gas well near Los Angeles, California, USA, cited corroded pipe casings, safety failures by a utility, and inadequate regulations as incident causes.

Chemistry to Tame the Power of Steam

As steam is produced in a boiler, the impurities left in the feedwater concentrate and precipitate out of the solution and onto the internal surfaces of the boiler, causing fouling. This reduces both the water flow and the heat transfer, decreasing the efficiency and power of the boiler. Such fouling can accelerate corrosion of the boiler, decreasing its life.

New Method for Repairing Damaged Concrete Bridge Girders

Researchers with the Minnesota Department of Transportation and the University of Minnesota have successfully tested a new, cost-effective method for repairing damaged bridge girders that they believe can restore them to their original shear strength or even make them stronger.