Horizontal directional drilling is increasingly being used to install sections of pipe across many spans that are considered high consequence areas. While regulation currently calls for extra consideration to be given to the coatings used to protect these sections of pipe from corrosion, the systems currently being employed may be insufficient. Cathodic protection systems and casings shouldn‘t be a substitute for an intact coating system. Fiber-reinforced urethane abrasion-resistant overcoat systems can be employed to ensure the damage to the coating done by these types of installations is reduced or eliminated.
In our modern world, new pipeline installation is a constant, and nearly every one being constructed has some portion that will be installed using horizontal directional drilling (HDD). HDD has become a vital part of new pipeline construction and there are many reasons for its acceptance. When a pipeline is installed by HDD or microtunneling, it is done so because an obstruction is in the way that must remain undisturbed, such as a road, lake, building, railroad, or river. HDD has gained popularity because the pipe cannot be trenched into the ground in these areas the same way it is over stretches of open land. While HDD-installed pipe accounts for <10% of new construction, it could possibly represent the most crucial 10% that should be protected. The very reasons why these vital sections should be protected are the same reasons that trenchless technology is used—the pipes run beneath our roads, lakes, buildings, railroads, and rivers. Typically, these are classified as high consequence areas (HCAs)… Read More