LNG is stored at more than 100 U.S. facilities. Most of the existing facilities in the U.S. were constructed between 1965 and 1975.
LNG is stored at very low (near atmospheric) pressure in double-walled, insulated tanks. The inner tank contains the LNG, while the outer tank contains the insulation and prevents any natural gas vapor from escaping.
All new LNG facilities are required to have a dike or impounding wall capable of containing 110-percent of the maximum LNG storage capacity. In the unlikely event of a spill, this feature will prevent LNG from flowing off site.  Storage facilities use advanced monitoring systems to immediately detect any liquid or natural gas leaks or fires at the plant.