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Asset Integrity Management of Critical Infrastructure
Editor
Mamdouh M. Salama
Mamdouh M. Salama
MMS4Aim LLC, USA
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Dragan Komljenovic
Dragan Komljenovic
Hydro-Québec, Canada
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Jovica R. Riznic
Jovica R. Riznic
Canadian Nuclear Safety Commission, Canada
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ISBN:
9780791887738
No. of Pages:
180
Publisher:
ASME
Publication date:
2024

Geohazards are a major contributor to pipeline incidents. Numerous incidents attributable to geotechnical hazards are listed in advisory bulletins from US DOT PHMSA. In addition to geohazards, hydrotechnical and seismic hazards can damage or cause loss of containment in pipelines.

A pipeline incident occurs when the demand on a pipeline segment exceeds its capacity. The demand is the loading imposed on the pipeline segment, while the capacity is the ability of the pipeline segment to resist the demand before an undesirable event, such as a leak or rupture, occurs. In the context of geohazard-imposed loading, the most relevant demand and capacity are in a pipeline’s longitudinal/axial direction.

This paper starts with a few real-world examples of pipeline incidents where geohazards were identified as one of the major contributing factors. The geohazards which provide the strain demand and girth weld characteristics which dominate the capacity are highlighted for each incident. The paper then turns to the fundamentals and key concepts of integrity-centric geohazards management and contrasts this approach with more traditional geohazards management techniques. The other foundational technology to this approach, strain-based FFS (fitness-for-service) assessment is also introduced.

The paper closes with some key elements and steps for the implementation of integrity-centric geohazards management. Practical guidance is provided so pipeline operators can utilize resources that are likely to make the biggest difference.

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