VIV Strakes
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AIS is a global leader in the engineering, manufacture and application of insulation and passive fire protection systems, as well as buoyancy and SURF (subsea, umbilicals, risers and flowlines) products.
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VIV Strakes

Reducing vortex induced vibration and fatigue

VIV strakes are helical polymer profiles installed around subsea pipelines and risers to disrupt vortex shedding and reduce vortex-induced vibration. By controlling vibration caused by flowing currents, they help limit fatigue loading and protect critical infrastructure from vibration-related damage.

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VIV strakes benefits

Controlling vibration to protect pipeline integrity

Tri-Strakes® Combi, Lite and Stinger provide different installation and performance characteristics, with proven geometries and application-specific designs developed to meet project requirements.

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Reduce vortex induced vibration
The helical strake profile disrupts the formation of regular vortices around the pipeline or riser, reducing the vibration response and helping limit the resulting fatigue loading.
Protect against fatigue damage
Reducing vibration helps manage cyclic loading on subsea pipelines and risers, supporting structural integrity and helping reduce the risk of fatigue-related damage such as girth weld failure.
Solutions for different requirements
The range includes different strake configurations to suit application and installation requirements, including PU VIV strakes, roto-moulded strakes and thermoformed strakes.
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