Intermodal (IM) Containers are containers that can be used as both a storage and shipping container. They are designed and built to be used across different modes of transport – from ship to rail to truck – without unloading and reloading the contents.

They are made to be dropped off at a facility and picked up for refilling when empty. The Intermodal tank types include:

• Low pressure
• Pressure
• Specialized (cryogenic/tube)

Box frame design is a tank within a full rigid metal structure to help with stacking and lifting. Beam frame design is a tank with metal framework built into both ends of the tank to help with stacking and lifting, but the framework does not completely surround the tank.

Intermodal Container Markings. Similar to railcars, intermodal containers have reporting and specification markings. These markings give responders information on tank design and construction features. The tank specification number will be provided in these markings (e.g., IM 101).