Which of the following is a TRUE statement about ton containers?

Ton containers are designed as large pressure vessels capable of holding hazardous materials in the form of gases or liquids, depending on their configuration and the intended use. The statement that valves can be used for liquid or vapor depending on the container's position is accurate, as their use can vary based on how the container is oriented. For instance, when upright, a ton container can allow for the release of gas, whereas in another position, it may facilitate the release of liquid. This adaptability for handling different states of matter makes ton containers versatile in various hazardous material management scenarios.

The other statements do not reflect the true capabilities of ton containers. They are not exclusively used for gases, nor is their function limited to holding liquids only. Additionally, the design of ton containers typically features multiple fusible plugs to enhance safety, rather than just one on each end, allowing for proper pressure relief and thermal management. This understanding of the design and operational principles surrounding ton containers is essential for safe handling and storage in hazardous material situations.