

NATURE OF DEFECT
The 1000mm vessels had suffered from external corrosion. This resulted in leak locations. The client required a composite repair to seal the leak locations and to bring the line back up to its full design specification.
SOLUTION
Metalyte Pipeworks produced a repair method using Herculyte epoxies to seal the applicable leaks with a minimum overwrap of 4 layers of Dragon-Q-STD composite system.
REPAIR METHOD
The substrates were prepared (excluding the identified defect area) using an MBX machine to gain a surface profile to SSP.SP11. Herculyte epoxies were fully mixed and inserted over the defects and 500 microns of Dragon resin was applied as a bonding coat. The repair area was wrapped in 4 layers of Engineered Dragon-Q-STD composite and cured until a minimum of 74.5 “Shore D” hardness was achieved.





