What is LNG

LNG (Liquefied natural gas) is the liquid form of natural gas at low pressure, for the ease of safe storage and transportation. LNG has about 1/600th volume of natural gas in the gaseous state (at standard conditions for temperature and pressure). LNG has the following properties; it is odorless, colorless, non-toxic and non-corrosive. LNG is considered as the safer gas in widely used fuels all over the world, however, there some hazards such as flammability after vaporization into a gaseous state, freezing and asphyxia.

Natural Gas liquefaction process involves very high level of engineering to achieve the maximum purity by removing components such as dust, acid gases, helium, water, and heavy hydrocarbons, which could create operational issues in downstream. In simple terms, LNG is a cleaner & safer form of natural gas that is condensed into a liquid form at close to atmospheric pressure by cooling it to approximately −1620C (-260oF).

Natural gas is mainly converted into LNG for easy transportation, where it is not feasible to lay pipelines technically and economically. Further, where low pressure & safer operation is required. LNG achieves a higher reduction in volume than Compressed Natural Gas (CNG) so that the (volumetric) energy density of LNG is 2.4 times greater than that of CNG (at 250 bar) or 60 percent that of diesel fuel.

Is LNG Safe?

Yes, LNG is safe, and decades of industry experience has demonstrated that LNG poses no more or no less risk than other transportation fuels being used today such as petrol (PMS), kerosene (DPK) and diesel (AGO). Greenville considered world class standards and procedures to design and operate our LNG storage and distribution equipment stipulated by the United States of America National Fire Protection Association (NFPA).

There is less risk in handling LNG when compared to other fuel products used in everyday business such as cooking gas (LPG) and petrol (PMS).

In the case of an adverse event, below are first aid and firefighting measures.

Greenville LNG Transport Safe

Considering the total world map of LNG truck movement, the accidents recorded are very less compared to any other fuel transportation business. Greenville always considers safety as the first Milestone. To avoid any chances for accidents, Greenville has analyzed the history of accidents due to LNG trucks, which happened on 20th October 2011 at the Spanish province of Murcia.

Greenville as a safe fuel handler has implemented recommended safety guidelines and even more. Greenville LNG tankers are protected with a double walled system in which the inner stainless-steel wall is made of material SS304 tank of 6mm thickness, and outer wall made of carbon steel tank of 6mm thickness, with a high vacuum and multi-layer thermal insulation in-between the two walls.

LNG and the Environment

LNG as fuel can help significantly reduce the environmental impacts of transport and power generation, most likely without increasing costs. Air polluting emissions from LNG combustion are best-in-class levels.

Reduction potential of LNG per pollutant

Air pollutant emission (in gas mode)	Reduction potential
CO₂	30%
NOx	90%
SOx	100%
Particulate Matter (PM)	90%

Source: American Petroleum Institute, 2015; Carr and Corbett, 2015.

LNG’s contribution to Greenhouse Gas (GHG) emission reduction is due to its lower carbon content. The well-to-propeller GHG reduction potential depends on the fuel taken as a reference. Use of LNG fuel results in 20% lower GHG emissions compared with Heavy Fuel Oil (HFO).