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DNV GL Launches Recommended Practice on Thermoplastic Composite Pipes

pipeline elementsDNV GL has launched a recommended practice (RP) that allows oil and gas operators to choose thermoplastic composite pipes instead of steel or traditional flexibles, enabling substantial cost reductions throughout the project lifecycle.

Thermoplastic composite pipes are a new, lightweight pipe alternative that offer advantages across all stages of the lifecycle of a pipeline or riser:

  • Design: Easy-to-tailor strength and good fatigue capacity, sufficient for the deepest waters and resilience to fluids and elevated temperatures.
  • Manufacture: Cost-effective continuous spoolable lengths and fully bonded. The same thermoplastic material can be used for the liner, composite layers and outer coating
  • Installation and decommissioning: Lightweight and spoolable.
  • Operation: No metal corrosion, high thermal and pressure tolerance and minimal flow resistance.

Thermoplastic composite pipes (TCP) RP-F119 was developed through a DNV GL-led joint industry project involving 18 companies covering the whole supply chain. The RP helps to ensure the performance, reliability and safety of TCPs during their lifetime.

The RP targets operators, contractors, suppliers and others seeking guidance for using TCP in offshore operations. It is intended for:

  • Suppliers of TCP for offshore operations and suppliers of raw materials for such pipes that are seeking market access for their products.
  • Operators and contractors seeking acceptance for using TCP in offshore operations.
  • Suppliers and recipients of TCP that need a common technical basis for contractual reference.

Photo credit: offshore pipeline elements via Shutterstock.

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