What is LNG?

LNG Technology

Liquefied natural gas (LNG) is the liquid form of the natural gas people use in their homes for heating and cooking. There are scores of active LNG facilities in North America. Most are used for storing natural gas for wintertime use.

Technology for chilling and liquefying natural gas emerged in the 1920s. Engineers could liquefy natural gas by cooling it to minus 260 degrees Fahrenheit. Liquefying natural gas allows for much more efficient storage. In its liquid state, six hundred cubic feet of natural gas only takes up one cubic foot of space, making it economical to transport between continents in specially designed ocean tanker ships.

This LNG is then stored in insulated tanks where it can then be "re-gasified" and distributed to customers by pipeline.

LNG provides a safe and efficient way of transporting natural gas over long distances, particularly from gas producing nations with insufficient pipeline infrastructures.  Some terminals will store LNG at about -162°C at near atmospheric pressure in reinforced insulated tanks.

The tanks consist of a stainless steel inner tank surrounded by about four feet of insulation, which is contained by an outer steel tank.

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