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March 2018

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Latest approvals for GTT membrane technologies

Bureau Veritas has long been involved in approving a wide range of liquefied gas containment systems. Among these new technologies, it recently assessed two new GTT systems.

The GTT MARS™ containment system was specifically developed for liquefied petroleum gases (LPG). These have higher densities than liquefied natural gas (LNG) and are transported onboard mid-sized to large LPG carriers at higher temperatures and greater atmospheric pressures. The solution is based on a single-membrane concept made of corrugated stainless steel. The insulation is fitted on the inner hull of the vessel, which acts as the secondary barrier of the tank, supporting the primary barrier.

In 2017, Bureau Veritas also approved the Mark III Flex +, the latest variant of the sea-proven Mark III technology, an LNG containment system that allows for a daily boil-off rate of 0.07%V/day.

carlos.guerrero@bureauveritas.com