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Technowrap Splashzone™ - 12" Gas Riser

Overview

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.

Scope

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

Solution

  • Rope access at all times
  • Technowrap Splashzone™ and filler material used to smooth blunt geometry locations

Benefits

  • No hot work required to complete the repair
  • No shut-down required, maintaining platform productivity
  • Technowrap 2K™ Splashzone provides the flexibility to operate in a splashzone (wet or subsea locations) and deal with challenging conditions in this area
  • Documented QA/QC procedures provide an excellent record of the repair materials and application process for future reference

IC Integrity

iasgroup is a partner in the IC Integrity JV, providing leading production critical cold work solutions that remove or minimise the need for shutdowns. The JV is home to market leading technologies such as TechnowrapTM and QuickflangeTM.