How are Type C packages distinct from Type B packages?

Type C packages and Type B packages have distinct characteristics based on their intended use and the materials they are designed to contain. Type C packages are specifically designed for the transport of materials that require an increased level of safety due to their potential hazards. They are rare and often intended for air transport, where the risk factors and the need for stringent safety measures are higher.

This distinction makes Type C packages suitable for high-risk materials that need to be handled with care during air transport, emphasizing their specific design features and the rigorous testing they must undergo to ensure safety at various altitude pressures and potential impacts.

In contrast, Type B packages are meant for more hazardous materials than Type A but less than materials that would require the specialized design of Type C packages. They are generally used for radioactive materials that must be transported with a higher level of safety than Type A packaging allows, but these do not necessarily have the unique requirements for air transport that define Type C packages.

This highlights the importance of understanding the specific regulatory requirements and intended uses for each package type in the transportation of hazardous materials.