The body of the valve was leaking from behind the flange bolts. The line was still in service running at 15 bar g.
The Problem
The platform had noticed that the body of the 1″ drain valve had produced a leak. This was situated in a very tight position and access was an issue.
The platform required Metalyte Pipeworks to seal the leak up and add strength using a composite repair.
The Solution
Metalyte Pipeworks have developed a composite system which they can inject a sealant into and seal up leaks.
A composite wrap is applied over the top to add strength and integrity to the valve.
How was it done?
The Metalyte technicians began by hand preparing and cleaning up the valve and flange. They also installed an engineered divert and encapsulated it within a high strength water activated composite wrap. Once the wrap had fully cured, the technicians built up and around the bolts and applied the engineered wrap fully encapsulating the valve. This was left to cure before a kevlar reinforced sealant was injected into the composite to seal the leak.
The following day the technicians removed the compression film and completed the shore D hardness readings.
