Pipeline rippling describes periodic wave-like deformations along the pipe wall surface — caused by installation stresses, soil movement, thermal cycling, or pressure fluctuations.

Pipeline rippling describes periodic wave-like deformations along the pipe wall surface — caused by installation stresses, soil movement, thermal cycling, or pressure fluctuations. While less severe than buckling or wrinkling, rippling reduces flow efficiency, increases drag, accelerates localized wear, and can develop into fatigue cracks over time.

Rippling is a geometric anomaly that requires accurate measurement for integrity assessment. Standard ILI caliper tools detect rippling in piggable lines, but many affected pipelines — particularly older or smaller-diameter systems — are unpiggable.

EMPIT’s CMI technology detects pipeline geometry anomalies including rippling from the surface, using high-resolution magnetic field analysis. This enables assessment of pipeline condition without excavation, supporting proactive maintenance decisions for at-risk pipeline sections.