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Risk Evaluation Of Potential Coating Damage From HDD

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This paper will identify the potential causes of pipe coating failure, from the design angles to the soil types, to the fracture methods of rocks, and pull forces. It will present a logical method for evaluating the condition of an HDD pull prior to its installation so that the right level of coating protection may be applied. The pipelines that carry our world's energy and industrial networks are a vital lifeblood of our society. HDD’s play such an integral part in keeping all aspects of the pipeline and its construction running smoothly, the aim here it to ensure there are no hiccups along the way.

Product Number: 51322-17762-SG
Author: Ron Raphoon
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings
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$20.00
$20.00

Pipe installed by the Horizontal Directional Drilling (HDD) method is typically unreachable for repair. Thus, the pipe coating needs to survive the initial installation to provide the longest potential for protection. There isn't currently a standard which guides coating selection industry wide, but this paper will provide guidance on potential ways to evaluate and can serve as a backbone for developing a standard.

Pipe installed by the Horizontal Directional Drilling (HDD) method is typically unreachable for repair. Thus, the pipe coating needs to survive the initial installation to provide the longest potential for protection. There isn't currently a standard which guides coating selection industry wide, but this paper will provide guidance on potential ways to evaluate and can serve as a backbone for developing a standard.

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As onshore pipeline rights-of-way become more congested and urban sprawl increases, the number of horizontal directional drills (HDDs) will likely increase. HDD is a trenchless pipeline installation method that requires drilling a larger pilot hole where the mainline pipe can be subsequently pulled through the drilled hole. However, HDDs have an increased probability for coating damage, even when coated with traditional mill or field applied abrasion resistant overcoat (ARO). This coating damage includes abrasion, impact, gouging, denting, tearing, bending, etc. and that damage may exist for the life of the pipeline due to an HDD being inaccessible for future maintenance.
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