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Osyka, MS
Pipe Wrap® Atlas™ CFE 30" Pipeline Repair

Project Overview

A 30” OD horizontal natural gas pipeline in Osyka, MS, was experiencing
a significant external corrosion. The damage in a Class 2 location was
11” long x 35” wide by x .152” deep. The repair of the Grade X-52 (52,---
SMYS) pipe consisting of a nominal wall thickness of .375” would require
facilitating a maximum operating pressure of 930 psi and an ambient pipe
temperature of 60°F.

The Solution

The Pipe Wrap® team designed a solution with a 20-year design life and
utilized the Atlas™ CFE System. The design included 10 layers for three
linear feet to restore the structural integrity of the pipeline back to pristine
condition.

Repair Method

The repair was completed in four hours with the Pipe Wrap team and
contractor personnel. The repair area was grit-blasted and wiped clean
with Acetone, followed by an application of EP420 as filler material for
load transfer at the corrosion site. Installers then applied a girth weld
and long seam welds, followed by an application of PPR epoxy coating to
entire repair zone. A layer of fiberglass was then applied. The 12” Wide
Atlas™ System was applied using the layer over layer with offset method.
ILI markers were installed at both ends of the repair. In total, 10 layers
for three linear feet of the Atlas™ system were applied. To finalize the
repair, Constrictor Wrap was applied, perforated and allowed to cure. The
contractor would remove the Constrictor Wrap and apply a topcoat with
customer coating in the following days.

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