PR-444-133602-R01 Assessing the Integrity of Coating Systems on Pipelines in Trenchless Crossings

Maintaining coating integrity is critical to the overall integrity of the pipeline. The objective of this research effort is to re-evaluate the various methods of assessing coating quality of pipelines installed using horizontal directional drilling (HDD), to recommend the most reliable and cost effective state-of-the-art methods, and to develop a set of acceptable pass/fail criteria, in concert with HDD contractors, that could be embedded into standards or specifications.