What type of container is used for shipping radioactive materials by air?

The correct choice for shipping radioactive materials by air is the Type A container. Type A containers are specifically designed for ground and air transport of radioactive materials that do not exceed certain limits of radioactivity. They provide adequate shielding and protection against radiation during transport, and are built to withstand minor accidents without releasing their contents.

Type A containers are typically used for moderate levels of radioactivity, making them suitable for the majority of commercial and medical radioisotope shipments. They meet stringent regulatory requirements established by organizations such as the International Atomic Energy Agency (IAEA) and the U.S. Department of Transportation (DOT).

In contrast, Type B containers are utilized for more highly radioactive materials and are designed to withstand severe conditions during transport, including accidents. Type C containers are intended for air transport of very high radioactive materials but are not commonly used for standard shipments. Type D does not exist within the established classifications for transporting radioactive materials.

Understanding these classifications is crucial for ensuring the safe and compliant transport of radioactive materials, particularly in emergency response situations.