What is mechanical damage to pipelines?
Mechanical damage is caused by external forces acting on a pipeline. This broad term includes defects such as dents, gouges, and coating damage.1,2,3
How does mechanical damage occur?
Pipelines often sustain mechanical damage when they come into contact with heavy machinery or equipment during construction, agricultural work, excavation, or handling.1 Mechanical damage can also result from accidental third-party interference or deliberate sabotage.2 Other possible causes include anchor damage to subsea pipelines and grinding during maintenance.2
Why is mechanical damage a risk for pipeline safety?
Mechanical damage is a common pipeline defect. It can cause immediate rupture if severe, and unreported damage may not fail right away, but can deteriorate over time due to fatigue or corrosion. Furthermore, coating damage exposes the steel to environmental conditions, accelerating corrosion. In addition, cracks beneath gouges can propagate, leading to leaks or catastrophic failure. Preventing and detecting mechanical damage is critical for maintaining pipeline safety and integrity.1,2
Would you like to find out more about specific mechanical damages, such as dents or gouges? Expand your knowledge by clicking through the 'Related Terms' section at the bottom of the page.
Coating failure occurs when the protective layer loses its adhesion or is damaged, exposing the underlying steel.
Pipeline cracking refers to the formation of fractures or splits in pipeline material.
Pipeline dents are indentations or deformations in a pipe’s wall caused by an external force.
Gouge damage is a type of mechanical damage that occurs when a foreign object scrapes or cuts the surface of a pipeline, removing part of the pipe wall.
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Source reference
- The Encyclopedia of Pipeline Defects, ROSEN UK, Edition 3, 2017.
- Introduction to Pipeline Defects, Angus Patterson, The Competence Club, ROSEN, 2025.
- Recommended Practice for Assessment and Management of Cracking in Pipelines, API Recommended Practice 1176, July 2016.
