NATURE OF DEFECT
The 12” deluge fire line had suffered from internal erosion. This resulted in a through wall leaking defect at the slip-on flange. The client requires a composite repair to seal the leak locations and to bring the line back up to a non-leaking design specification.
SOLUTION
Metalyte Pipeworks produced a repair method using their composite injectable system to seal the leaks with a minimum overwrap of 6 layers of Dragon-Q-STD composite system.
REPAIR METHOD
Metalyte Pipeworks sealed the leak using a high strength injectable composite system and the sub- strate was prepared using an MBX machine to gain a surface profile to SSP.SP11. A minimum of 2 layers of Herculyte LV resin impregnated cloth was applied as a bonding coat to the entire repair area prior to application of the Dragon composite. Once the Herculyte LV cloth was fully cured, the repair area was wrapped in 6 layers of Engineered Dragon-Q-STD composite and allowed to cure until a minimum of 74.5 “Shore D” hardness was achieved.
