Which statement about intermodal containers is false?

Which statement about intermodal containers is false?

• A. They can be used across highway, rail, and ship.
• B. Some have pressure ratings up to 300 psi and heavy insulation.
• C. Cryogenic tanks are a type of intermodal tank.
• D. All intermodal containers are non-vented.

Answer: (D)

Intermodal containers are built to move cargo across highway, rail, and ship, and they come in several designs to handle different contents. Some are pressurized or insulated, and cryogenic tanks are a specialized subtype designed for extremely cold liquids with proper insulation and venting to manage boil-off gas. Not all intermodal containers are non-vented—venting is required for many cargos to prevent overpressure as temperatures rise or as gases are released. Relief valves and venting devices protect the container and surrounding area, so assuming every intermodal tank is non-vented isn’t correct.

Intermodal containers are built to move cargo across highway, rail, and ship, and they come in several designs to handle different contents. Some are pressurized or insulated, and cryogenic tanks are a specialized subtype designed for extremely cold liquids with proper insulation and venting to manage boil-off gas. Not all intermodal containers are non-vented—venting is required for many cargos to prevent overpressure as temperatures rise or as gases are released. Relief valves and venting devices protect the container and surrounding area, so assuming every intermodal tank is non-vented isn’t correct.