New Permanent Rehabilitation Solution for Liquid and Gas Pipelines
Proceedings Publication Date
Res-Q® Composite Wrap offers a new permanent rehabilitation solution for liquid and gas pipelines with external corrosion, gouges, grooves, arc burns and dents. It’s suitable for wall thickness reductions down to 20% of the original wall thickness of the axial pipe but not for repairing cracks. Capable of restoring a pipeline to its design pressure without shutting down operation, this composite wrap is an alternative to repair clamps, welded sleeves and pipe replacement. It can be installed horizontally and vertically. Thoroughly tested by accredited third-party laboratories (like TÜV Nord), Res-Q® Composite Wrap meets the requirements of international composite standards ASME PCC-2 and ISO 24817, as well as liquid and gas pipeline standards ASME B31.4/B31.8. All materials specified for this composite wrap solution are pre-measured, pre-cut and packaged for field installation. Res-Q® Composite Wrap utilizes only one epoxy product to both wet the carbon fabric and to bond the wrap to the pipeline. No volatile solvents can be found in the resin. The woven carbon fabric design results in fewer plies and reduced thickness because of greater strength, higher modulus of elasticity and lower creep. The fiberglass barrier in each restoration kit provides a positive layer of insulation between the pipeline and the carbon fabric. This stitched carbon fabric provides efficient load transfer from the pipeline to individual fibers. The paper will describe Res-Q® Composite Wrap as a new solution to pipeline defects where clearance between pipelines is limited or width of excavation is narrow due to job site restrictions. Practical experiences and applications will be presented, through which the case of installation and the reliability of this system will be proven.