What are the requirements for Type B packages?

Type B packages are specifically designed for the transportation of radioactive material and must meet stringent safety standards. The requirement for these packages is that they must be able to survive severe accidents, which include potential impacts, fire, and water immersion. This capability ensures that the containment of the radioactive material is maintained, thereby protecting public health and the environment from possible exposure to radiation in the event of an accident during transit.

The design and testing of Type B packages involve rigorous assessments to confirm their durability under extreme conditions. This ensures compliance with regulatory standards set by organizations such as the International Atomic Energy Agency (IAEA) and the U.S. Department of Transportation (DOT). Thus, the emphasis on their ability to withstand severe accidents is crucial in ensuring safety throughout the transportation process.

Other options, while they may pertain to certain aspects of materials handling or transport regulations, do not specifically define the critical safety requirements that Type B packages must meet. For instance, protective coatings (mentioned in another option) may be beneficial but are not a primary requirement for the classification of Type B packages, and weight limits or specific contents such as hazardous waste do not apply to the definition of these packages.