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10″ Tee Repair and Rehabilitation with Thermo-Wrap CF

Offshore from Neptune Research Inc (NRI)

Problem

This 10” OD tee petroleum line on an offshore oil platform in Mexico was experiencing severe pitting due to atmospheric conditions causing a 50% wall loss over a 2’6”(.8m) section.

Conditions

This line operates at 100 psi (6.8 bar) and 100°F (38°C).

Solution

The first step in the repair process was to complete surface preparation in accordance with SSPC-SP3 “Power Tool Cleaning” using an MBX Bristle Blaster. Next, the defects were coated using Syntho-Poxy™HC, a high-compression-strength, liquid epoxy, which provides a load-transfer medium. Then, Thermo-Poxy™ epoxy was applied over the entire repair area to provide corrosion protection to the bare steel, locking out any environmental atmospheric conditions while also acting as a primer for Thermo-Wrap™CF, a chemically resistant carbon fiber composite repair system which was developed for high temperature applications. Thermo-Wrap CF carbon fiber composite system was applied at the calculated number of layers over the required repair length, fully restoring the integrity of the pipe. Lastly, Syntho-Glass®UV was applied to provide UV stabilization for the composite repair system.

Result

In only a few hours, NRI was able to repair the external pitting and restore the pipe to its original design pressure. By utilizing a Thermo-Wrap CF was installed by certified technicians and quickly restored the pipeline to its original design specifications in a matter of four hours, which saved time and other resources.

Offshore from Neptune Research Inc (NRI)

Category :

Offshore

Date :

June 20, 2018