Inter-array pipelines

The most reliable and cost effective way to transport hydrogen from a wind turbine offshore

TCP used for inter-array pipelines efficiently carry the hydrogen from the electrolysers on the WTG platform to the seabed, either to a gathering line, to another wind turbine (daisy chain), or to a manifold subsea. Strohm helps operators, developers, EPC contractors, and engineering houses optimize the configuration of each wind park to reach the lowest levelized cost of hydrogen (LCOH).

Thermoplastic composite pipes do not degrade or suffer from embrittlement with exposure to hydrogen. Following the existing globally accepted DNV-ST-F119 standard, TCP will be fully qualified for hydrogen service by the end of 2022 and will reach TRL 9 (per ISO/EU commission). Unlike for steel pipelines, there is no failure mode associated with hydrogen for TCP. 

TCP, in addition to being robust and perfectly suited for harsh environments, remains lightweight and flexible. It can be delivered in long lengths and cut to length offshore, maximizing transportation and installation cost. Installation methods are versatile with TCP, from cablelay, to pipelay, to light construction vessels, allowing contractors to propose the most cost effective and safe installation technique. Strohm's track record in oil and gas is directly transferable to the offshore wind industry with similar installation methods and the same offshore environment. Strohm has the largest track record in the world!

TCP can be cut to length and terminations (end-fittings) can be mounted anywhere, at the factory, on the installation vessel and even on the WTG. This creates flexibility in installation (sequence) and it further de-risks the project execution by allowing re-termination in case of an incident during operations offshore. It further unlocks cost savings by reducing the size of the J-tube to be pulled through in the WTG. Clients’ technicians can be trained by Strohm and be fully autonomous in mounting or remounting end-fittings. 

 

Dynamic inter-array pipelines

In case of hydrogen production in a floating wind turbine, TCP can safely carry hydrogen in the harshest and most dynamic environments. The carbon fiber based TCP products developed for the Oil and Gas industry and qualified according to the DNV-ST-F119 standards are perfectly suitable for dynamic hydrogen applications. Unlike any other steel based technology, TCP does not degrade or loses its superior characteristics with exposure to hydrogen, retaining its unprecedented fatigue performances. Strohm collaborates closely with the offshore wind to hydrogen industry to propose the most optimized configuration for each project. 

Data transmission

A fiber optic line can be embedded into the TCP coating to include data transmission without having to lay a separate line, reducing costs and increasing reliability of the system. Indeed, the coating of the TCP provide a sturdy protection to the fiber optic.

Please contact us for more information on our inter-array pipelines.

The TCP inter-array pipeline enables offshore green hydrogen projects

  • No reaction with exposure to hydrogen, zero!
  • Fast termination in the field, in the WTG, onboard, on the quayside and in the plant
  • Pull-in directly into the WTG, or connected subsea to small manifolds (low loading on connectors) 
  • No metrology, rigid spools, or welding
  • Versatile installation methods and lower cost (pipelay, cable-lay, construction vessels)
  • Superior fatigue performances in the harshest environments