What type of storage container is approved for storing fuel?

The approval of metal fuel cans with flame arrestors for storing fuel is based on safety regulations and standards that aim to prevent fire hazards. Metal fuel cans are specifically designed to contain flammable liquids safely. The flame arrestors serve a vital function by preventing the ignition of vapors that may escape from the container, significantly reducing the risk of fire.

These cans are manufactured from durable materials that can withstand the pressure and potential impact from external conditions, thus providing a reliable storage option. Additionally, they typically feature a secure sealing mechanism to prevent spills and vapor emissions, enhancing safety during both storage and transport of fuel.

The other storage methods mentioned do not meet the required safety standards. Plastic jugs lacking safety features are susceptible to mechanical failure, while glass containers are fragile and not designed to hold flammable substances securely. Unmarked bags or cardboard containers do not provide adequate containment or protection against ignition, leading to significant safety risks.