1/4/2023 0 Comments Iso 6974 pdf free download![]() ![]() LNG is a mixture of hydrocarbons composed predominantly of methane and which can contain minor quantities of ethane, propane, butane, nitrogen, or other components, normally found in natural gas. Often, the LNG itself does not present the greatest hazard other systems such as LPG-based refrigeration at the liquefaction plant or high pressure gas send out at a regasification plant can dominate the overall site risk profile. When evaluating the hazards at an LNG site, designers need to consider all systems present. This International Standard focuses on LNG, its properties, and resultant hazards. If vapour accumulates in a confined space, ignition can result in detonation and shock wave overpressure. ![]() At ambient conditions, the flammable mixture range with air is from approximately 5 % to 15 % gas by volume. One volume of LNG produces approximately 600 volumes of gas.Ĭ) Natural gas, similar to other gaseous hydrocarbons, is flammable. At this temperature, the vapour is denser than ambient air.ī) Very small quantities of liquid are converted into large volumes of gas. At atmospheric pressure, depending upon composition, LNG boils at about -160 ☌. The potential hazard in handling LNG stems mainly from three important properties.Ī) It is extremely cold. ![]() It is recommended that all personnel concerned with the handling of LNG should be familiar with both the characteristics of the liquid and the gas produced. BS EN ISO 16903:2015 pdf free.Petroleum and natural gas industries ![]()
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