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.
![](https://lntmarine.com/wp-content/uploads/2024/02/NH3-I.jpg)
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.
![](https://lntmarine.com/wp-content/uploads/2024/02/NH3-II.png)