Guide
LNG carriers
How LNG carriers work, and the Dasic gas freeing fans used on them.
LNG carriers are purpose-built vessels for transporting gas in liquid form. Gas shrinks to about 1/600 of its volume when liquefied at −162°C, so far more can be carried and transport by sea becomes much more efficient.
Most gas carriers carry around 140,000 m³, and in recent years the size and capacity of LNG carriers has increased greatly. The Q-Flex and Q-Max classes, for example, carry between 210,000 and 266,000 m³ and are fitted with re-liquefaction plants.
Containment systems
Moss tanks
Designed by the Norwegian company Moss Maritime, Moss tanks store LNG in spheres. Most Moss-type vessels have four or five tanks, normally with a working pressure of up to 22 kPa.
Membrane tanks
Membrane tanks are more box-like and use a membrane designed to absorb thermal contraction as the tank cools. The primary barrier is in direct contact with the cargo, followed by primary insulation, a secondary barrier and secondary insulation, all supported by the ship’s hull.
Dasic equipment for LNG vessels
- Gas freeing fans: Jetfan 70 (water driven) and Jetfan 65 (air driven)
Dasic equipment for this application
Not sure which machine fits? Tell us about your vessel and we’ll recommend a set-up.
Not sure which machine fits your tank?
Answer a few questions about your vessel and cleaning conditions and we’ll point you to the best-fit options.