NATURE OF DEFECT
8” and 10” nozzles had suffered from internal erosion. This has resulted in internal wall loss. The client requires a composite repair to add strength and integrity and bring the line back up to its full design specification. There are 3 nozzles to repair in total.
SOLUTION
Metalyte Pipeworks have design the repair on a 50mm circular through wall defect at the end of design life. Metalyte have produced a repair method with a minimum overwrap of 6 layers of Dragon Q-UHT composite system.
REPAIR METHOD
The surface was prepared using an MBX machine to gain a surface profile to SSP.SP11. A minimum of 500 microns of Dragon resin were applied as a bonding coat to the entire repair area prior to applica- tion of the Dragon composite. The repair area was wrapped in 6 layers of Engineered Dragon Q-UHT composite. The composite repair was cured until a minimum of 74.5 “Shore D” hardness was achieved.
