During a routine inspection a 10” natural gas pipeline in Lima, Peru, was damaged by an excavator, and in need of immediate repairs. The natural gas pipeline, which has an MAOP of 1,050 psi (72 bar) was forced to operate at a pressure of only 900 psi (62 bar). The excavator had caused approximately 15 percent of wall loss damage to the pipeline, resulting in the requirement for reduced pressure.
On November 10, 2011, NRI’s Jose Zapata, Latin American Sales Manager, traveled to the location to perform the Syntho-Glass XT technical training and on-site repair.
The area surrounding the pipeline was excavated to allow technicians full access to the defect. Surface preparation was completed utilizing the MBX Bristle Blaster in accordance with NRI’s surface preparation standards. Syntho-Poxy HC was used to fill the gouge and act as load transferring material. Next, Syntho-SubSea LV was applied over the repair area, which provides a layer of corrosion resistance and adhesive between the pipe and wrap. Finally, the Syntho-Glass XT was applied at the required number of layers to restore the pipeline back to its original MAOP. The pipeline was then brought back up to full operating pressure.
Aguaytia Energy del Peru, whose mother company is Duke Energy, performed the successful repair in only an hour and a half.






























