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Articulating concrete mattresses, also called construction mats, are used to separate, stabilize and protect offshore pipelines. Special pads, typically made from polymer materials, are designed to minimize damage to coatings on subsea pipelines from the concrete mats. Some pads act as shields and prevent cathodic protection from protecting areas where coating damage exists.

Tests were conducted at Southwest Research Institute (SwRI) to evaluate different cathodic protection permeable pad designs.

Corrosion under an impermeable pad

Measured potentials used to determine cathodic protection shielding

For more information about the evaluation of subsea pipeline pads, or how you can contract with SwRI, please contact James F. Dante, at jdante@swri.org or

(210) 522-5458.

corrosiontechnology.swri.org

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Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

January 03, 2013