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Neptune Research Case History

Success Stories

PIPELINE REINFORCEMENT AND REPAIR


Problems

This 900 psi, 10.75" OD pipe was showing signs of substantial wall loss over an 8-1/4" area.

Solution

In order to promote adhesion, the pipe was sand blasted to remove rust, paint, and other foreign matter, then cleaned using a solvent wipe. Pits were filled using Syntho-Steel™ load transfer putty then the entire repair area was coated with Syntho-SubSea™LV, a high compression strength two part Kevlar® reinforced epoxy.

The two part epoxy stopped the corrosion and provided a load transfer median engineered to cycle and work with the 900 psi (62 bar) line. The line was then wrapped with 8 layers of Syntho-Glass®XT, a 54,000 psi (3723 bar) tensile strength fiberglass composite sleeve, which provides structural integrity to the composite repair system.

Result

The repair was completed inexpensively in less than one hour. A repair that could have otherwise could have taken weeks. Syntho-Glass XT composite system fully restored the pipe’s hoop and axial strength to enable operations at full MAOP of 900 psi (62 bar).