SOUTHWEST RESEARCH INSTITUTE

Materials Performance and Characterization

Independent Product Evaluation

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Undersea Pads

Because subsea pipelines tend to be buoyant, they are often weighed down with concrete saddle bags or blocks. In the process of using these weights, the epoxy coating on the pipeline can become damaged, leading to holidays. To prevent this damage, protective pads are often used, but concerns were raised about possible cathodic protection shielding and development of stagnant conditions leading to the formation of colonies of microbes. To address these concerns, two manufacturers developed alternative pads, and Southwest Research Institute (SwRI) was tasked with evaluating the effectiveness of cathodic protection current transmission through the pad as well as assessing the likelihood of microbial colony formation. Based on the testing conducted, both products were determined to meet the stated objectives.

 

graph showing results of pad evaluation   image of alternative pad developed by a manufacturer for SwRI to evaluate for its effectiveness
image of alternative pad developed by a manufacturer for SwRI to evaluate for its effectiveness

Two manufacturers developed alternative pads, and Southwest Research Institute was tasked with evaluating the effectiveness.

 

For more information about materials performance, characterization, and independent product evaluation, or how you can contract with SwRI, please contact James F. Dante, at jdante@swri.org or (210) 522-5458.
 

Contact Information

James F. Dante

Materials Performance and Characterization

(210) 522-5458

jdante@swri.org

Related Terminology

corrosion research

pipeline corrosion

coatings

corrosion sensors

corrosion life
prediction

pitting corrosion

aircraft integrity

corrosion monitoring

corrosion-related
failure analysis

microbiologically 
influenced corrosion

| Materials Engineering Department | Mechanical Engineering Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 10 technical divisions.

August 07, 2014