Where are portable LPG and CNG containers with a capacity greater than 16.4 oz and 8.7 SCF prohibited from being stored?

Portable LPG and CNG containers with a capacity greater than 16.4 oz and 8.7 SCF are prohibited from being stored indoors primarily due to safety concerns. The storage of these containers indoors poses significant risks, as they can leak, leading to the accumulation of flammable gases in enclosed spaces. This accumulation, even at low concentrations, can create an explosive environment, endangering individuals in the vicinity.

Storing these containers indoors can also hinder proper ventilation necessary for dispersing any leaked gas, increasing the danger of fire or explosion. Therefore, regulations are put in place to ensure they are stored in well-ventilated areas, typically outdoors, where any potential leak can dissipate safely into the environment, reducing the risk to people and property.