Paris-headquartered GTT has obtained Approvals in Principle (AiP) from Bureau Veritas for its ‘NH3 Ready’ classification of its Mark III membrane tanks and ‘1 barg’ tank design in anticipation of a future marine fuel alternatives.
The AiP for the Mark III recognises that the solution, without any major design changes, is suitable for the subsequent containment of ammonia in LNG as fuel applications.
Over the course of the AiP study, a compatibility assessment with ammonia was carried out for the primary barrier of Mark III technology and a test campaign was performed to determine the level of reinforcement of the containment system to consider the higher density of ammonia compared to LNG.
The second Approval obtained from Bureau Veritas relates to the higher design pressure of GTT’s ‘1 barg’ in LNG as fuel applications, such as large container vessels. Thanks to an already existing alternative design of membrane tanks with specific dome reinforcement, GTT says this AiP gives shipowners more flexibility in all their operations.
Commenting, Philippe Berterottière, Chairman and CEO of GTT, said: ‘GTT targets bringing increased flexibility to shipowners required to adapt as well and as quickly as possible to an ever-changing fuel world.
‘While we are convinced that LNG is the solution of choice for cleaning-up ship emissions even further, we have to take into consideration that ammonia, coming from green hydrogen, could bring additional reductions in emissions. In offering ammonia compatibility, we open the perspective to owners of a much longer period for ship amortisation.’
Matthieu de Tugny, President, Bureau Veritas Marine & Offshore, added: ‘Our role is to help the industry understand – and address – both risk and opportunity as we look for energy transition solutions. It is a pleasure to be awarding this first approval for an ammonia membrane containment tank system, based on the tried and trusted Mark III technology, to GTT.
He continued: ‘Bureau Veritas has made significant investments in expertise to help manage the challenges of the energy transition. This expertise continues to be enhanced and we look forward to being able to share it with our stakeholders to find solutions to the challenges we face.’
As previously reported, earlier this month, GTT secured AiP for its NO96 containment system when used as an LNG fuel tank for ultra large container vessels (ULCV).