by John Krzywicki, American Galvanizers Association
Hot-dip galvanizing, a process in which steel components are immersed in a molten bath to form a zinc protective coating, has been used for decades in industrial construction to provide a protective layer from corrosive elements. This article will highlight four bridge projects that employed galvanizing—both with and without duplex protective coating systems—to provide long-term, maintenance-free corrosion protection in different service environments.
by Keith E.W. Coulson and James Ferguson, TC Energy
A recent evaluation program by a Canadian pipeline owning and operating company was carried out on the coating integrity of stockpiled fusion-bonded epoxy-coated pipe for the expansion of the Keystone XL pipeline project. This article describes the second portion of this overall refurbishment program of pipe stored in Canada to examine the consequences of long-term storage on coatings.
by Robert Dahlstrom, Apellix; and Michael Hindmarsh, AkzoNobel
Cleaning, coating and nondestructive testing at industrial sites requires extensive manual labor, often at heights, and drones can be used to perform some of these tasks while keeping workers safely on the ground. The authors discuss how nondestructive measurement drone capabilities have evolved over the past few years and offer a preview of cleaning and coating drone systems that are currently under development.