LNT A-BOX® Ammonia Tank
ammonia tank solutions
Ready For The Green Transition
Green ammonia (NH3) is a zero-carbon fuel, and a hydrogen carrier that is considered to be among the most attractive alternative fuels.
The LNT A-BOX technology can be designed to be capable of carrying ammonia, and has received approval from major class societies for NH3 and LNG carriage in accordance with the IMO IGC as well as IGF code, i.e. both as a cargo tank or a fuel tank. Thus, the LNT A-BOX / Fuel-BOX offers a prismatic tank suitable for both LNG and ammonia with high volume utilization and low weight.
Due to its unique arrangement, with a cold interbarrier space and all insulation outside the secondary barrier, the LNT A-BOX / Fuel-BOX offers significant benefits for ammonia applications compared with traditional solutions:
- Safety and gas handling where LNT A-BOX has less vaporization to consider in emergency cases
- Inner hull shall not be designed as secondary barrier and can be constructed in normal ship building steel, and
- Primary and secondary barrier will be easily accessible for inspection and repair.
LNT A-BOX® Ammonia Tank
Due to its unique arrangement with the insulation outside the secondary barrier, the LNT A-BOX system does not have compatibility issues with NH3 – different from other prismatic tank types. With an independent secondary barrier, the inner hull can be built in normal shipbuilding steel – as opposed to traditional LPG carriers that can carry ammonia. This saves costs as low temperature grade steel can be avoided, and simplify material handling and building process for the yard.
Secondary barrier in a cold interbarrier space
With the LNT A-BOX secondary barrier in the cold interbarrier space a potential leak would not generate rapid vaporization and offer a more manageable vent handling requirement. The vaporization and amount of vent gas to be handled in case of a leak scenario would be significantly more manageable for LNT A-BOX compared with a traditional IMO type A arrangement for LPG.
