Public Safety and FERC's LNG Spin
Download the full report in pdf form (231k).

Below is one example from the report comparing what FERC says about whether LNG can explode, and the facts.

What FERC Says
Is LNG Explosive?
LNG is not at all explosive or flammable in its liquid state.

What The Facts Say
Is LNG Explosive?
In the strictest technical sense LNG is not explosive in its liquid state. Neither are other flammable liquids such as gasoline, propane, or hydrogen. Unfortunately, because of the extreme cold temperature of LNG, the environment does not want it to remain in a liquid state. Much of the world is roughly 300? F warmer than LNG; therefore the environment around it is continually boiling it. The vaporized LNG must be vented from storage tanks to prevent the buildup of pressure. This boil-off is released, burned, or re-condensed to a liquid and returned to the tank.

Vaporized LNG has a relatively broad flammability range, from 5.3% to 15% concentrations in air. Below these concentrations the mixture is too lean to combust. Above these concentrations the mixture is too rich. By comparison, propane has a narrower range of flammability (2.2% to 9.5%), as does gasoline (1.4% to 7.6%).

Whether or not LNG vapor will explode depends on a variety of factors related to its concentration in air, temperature, pressure, and the amount of "hot contaminants" included in the LNG. Studies performed to date are incomplete in properly characterizing the explosive potential of LNG and its vapors.