Is liquified natural gas explosive?
In its liquid state, natural gas will not explode or burn. In a gaseous state, natural gas is not explosive if it is unconfined. Natural gas is only flammable within a very narrow range of concentrations with air. Outside of these concentrations (5-15% air), there is either not enough oxygen to sustain a flame or too much oxygen for the gas to ignite. For gas to burn there must be an ignition source and storage plants are designed to limit ignition sources near the natural gas equipment.