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Finding the Smoking Gun: Lessons Learned from an HDD Coatings Challenge (Coatings Applications Aren’t as Simple as They Appear)

Picture for Finding the Smoking Gun: Lessons Learned from an HDD Coatings Challenge (Coatings Applications Aren’t as Simple as They Appear)
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Longitudinal cracking had occurred in the protective ARO pipeline coating scheduled for installation. Once the cracks were discovered the cause and extent of the cracking needed to be identified before work could continue. Industry experience has shown that coating failures do not always have a singular cause and often are the result of multiple interacting variables. In addition, the interaction of these variables can be complex in nature.

Product Number: 51323-19008-SG
Author: Karen Bowman, Valerie Sherbondy, Lake Barrett
Publication Date: 2023
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$20.00
$20.00

A gas transmission company was building a major pipeline to bring natural gas from the Utica and Marcellus gas fields (Western PA, OH, WV) to the east coast. During the first Horizontal Direction Drill (HDD) for the pipeline, the pipe was assembled, coated, and pressure tested as the HDD crossing was being drilled. Shortly thereafter, a stay was placed on the project. During the standby time, and the authorization to proceed, small longitudinal cracks appeared in the abrasion resistant overcoat (ARO) coating. This presentation (paper) provides an overview of the crack initiation analysis and lessons learned during this process. The owner reached out to a consulting firm to tap their coating, painting and materials expertise to provide field assessment and laboratory evaluation and perform a root cause analysis. The consulting firm were also tasked with developing a suitable solution to address this unforeseen challenge under the watchful eye of PHMSA.

A gas transmission company was building a major pipeline to bring natural gas from the Utica and Marcellus gas fields (Western PA, OH, WV) to the east coast. During the first Horizontal Direction Drill (HDD) for the pipeline, the pipe was assembled, coated, and pressure tested as the HDD crossing was being drilled. Shortly thereafter, a stay was placed on the project. During the standby time, and the authorization to proceed, small longitudinal cracks appeared in the abrasion resistant overcoat (ARO) coating. This presentation (paper) provides an overview of the crack initiation analysis and lessons learned during this process. The owner reached out to a consulting firm to tap their coating, painting and materials expertise to provide field assessment and laboratory evaluation and perform a root cause analysis. The consulting firm were also tasked with developing a suitable solution to address this unforeseen challenge under the watchful eye of PHMSA.

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