A 12" gas riser had a 1 meter (axial length) temporary clamp in place that had been in service longer than its 2 year design life. The client wished to reinstate the integrity of this section of the riser. An engineered TechnowrapTM composite repair, encapsulating the clamp, was proposed to provide an extension to the design lifetime of this section of riser until a replacement could be fabricated and installed.
The line had the following specifications:
Structure | 12" Gas Riser |
Surface Preparation | Sa 2.5 |
Class Approval | N/A |
Design Pressure | 120 Bar |
Design Temperature | 600C |
Application Temperature | 150C |
Design Life | 10 years |
Wrap Length | 1,500 mm |
Pipe Diameter | 300 mm |
Geometry | Temporary clamp |
Corrosion Type | External |
Defect Details | Wall thinning |