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DNV awards two approvals in principle to GTT for design of membrane-type containment for LH2 and LH2 carrier

GTT has been granted two Approvals in Principle (AIP) from the leading classification society DNV for the design of a membrane-type containment system for liquefied hydrogen (LH2) and for the preliminary concept design of a LH2 carrier. These approvals are part of the agreement with Shell, announced in February 2022, and pave the way for the next stages of the project.

As part of the energy transition to a carbon-free future, the ability to transport very large volumes of hydrogen in liquefied form at -253 °C is one of the technological challenges to establishing a reliable, efficient and competitive hydrogen supply chain.

GTT originally developed its membrane technologies to cut the cost of shipping liquefied natural gas (LNG) and loading it, in bulk, into the vessel’s holds. To cope with the cargo, holds need to be coated with a cryogenic lining that can withstand the load. Envelopes, known as membranes, contain the LNG at a temperature of -163 °C, sealing it with a totally impermeable layer between the liquid cargo and the vessel’s hull, while also limiting cargo loss through evaporation.

The approvals in principle issued by DNV validate GTT’s technological advances in LH2 containment and the preliminary design of a LH2 carrier.

The GTT Group has designed a LH2 containment system that meets current regulatory requirements and anticipates future developments, as requirements for the transport and cargo of hydrogen are being developed by the International Maritime Organization.



Here is a German analysis of moving hydrogen etc around:

' Germany will be able to procure the volumes of hydrogen imports needed by 2030 if it quickly sets the right infrastructural, legal and entrepreneurial course, a team of researchers from the “Energy Systems of the Future” (ESYS) has found in an analysis. The team looked at the different import options – from pipeline transport of the gas to liquefied hydrogen or shipping the fuel in the form of ammonia – and found that there is no dominant alternative. “All options have specific strengths and weaknesses as well as different implementation horizons and requirements, so they ultimately need to be established on a case- and application-specific basis,” writes ESYS, which is an initiative of the German Academies of Sciences. For example, a shipping import system for green ammonia – to be used as a raw material for example in the chemical and fertilizer industry – could be set up almost immediately. Significant volumes of pure hydrogen could also be imported via refurbished natural gas pipelines within 3-5 years. Liquid hydrogen transport via ships, however, is still a long way off, say the researchers. They call it a “valid option” from 2030, but highlight that the necessary liquid hydrogen tankers are still in the development phase, and it is currently not possible to foresee by when sufficiently large fleets of ships will be available for commercial liquid hydrogen transport. The analysis is based on calculations on the costs and energy efficiency of the respective transport chains, as well as on qualitative criteria, including environmental impacts, existing infrastructures and political and legal feasibility.'

Irritatingly, the links to the in depth details go off into German, which seems VERY unreasonable to me! ;-)


Our entire future depends on our choices! Carbon-free production is the basis of the future health of our children! I, as an artist here how to draw constantly advocate the creation of innovative technologies in the field of carbon-free production!

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