NATURE OF DEFECT
The 16” line had suffered from external corrosion. This resulted in wall thinning. The client requires a composite repair to halt the corrosion and bring the line back up
SOLUTION
Metalyte Pipeworks produced a repair method using Herculyte epoxies to infill the defects with a minimum overwrap of 10 layers of Dragon-Q-STD composite system.
REPAIR METHOD
The surface was prepared (excluding the identified defect area) using an MBX machine to gain a surface profile to SSP.SP11 and surface defects within the immediate repair area were repaired using Herculyte epoxies. 500 microns of Dragon resin was applied as a bonding coat to the entire repair area prior to application of the Dragon composite. The repair area was wrapped in 10 layers of Engineered Dragon-Q-STD composite and allowed to cure until a minimum of 74.5 “Shore D” hardness was achieved.
