What are the three types of propane containers?

The correct classification of propane containers includes ASME tanks, DOT cylinders, and FAA cylinders, as these categories represent standard designations for storage and transport.

ASME tanks, or American Society of Mechanical Engineers tanks, are large, permanent installations typically used for stationary storage of propane at residential, commercial, and industrial sites. They are designed for safety and efficiency, often holding larger volumes of propane.

DOT cylinders refer to propane containers regulated by the Department of Transportation. These are smaller, portable tanks that are commonly used for residential grilling, camping, and other temporary applications. They must meet specific safety standards to ensure safe transport and use.

FAA cylinders are specialized containers governed by the Federal Aviation Administration, which focus on the delivery of propane in aviation applications. These cylinders must adhere to strict regulatory requirements due to the safety considerations associated with handling flammable gases in aviation contexts.

The other options do not accurately reflect standard classifications recognized for propane containers. While terms like portable tanks and residential tanks might informally describe certain types of containers, they do not represent universally accepted categories within the propane industry. Consequently, the specified classifications in the correct answer provide precise distinctions that are crucial for understanding the various applications and requirements of propane storage and transportation.