Which piece of information is required on a radioactive materials label?

The required information on a radioactive materials label includes the type of radioactive material and its activity level. This is essential for several reasons. First, knowing the type of radioactive material allows personnel to understand the specific characteristics of the material, including the types of radiation it emits and the potential hazards associated with it. Second, the activity level provides crucial information on how much radiation is being emitted, which directly relates to the safety protocols that must be followed to minimize exposure. By having this information clearly displayed, it allows for proper handling, storage, and emergency response measures to be enacted, ensuring the safety of all personnel who may come into contact with the materials.

The other options, while they may be relevant in certain contexts, do not meet the core regulatory requirements for labeling radioactive materials. For instance, an expiration date may be useful for certain items but is not universally applicable to all radioactive materials. Similarly, the storage location, while important for managing inventory and safety, does not provide immediate critical information about the hazards associated with the materials themselves. Lastly, a list of authorized personnel is important for security purposes, but it pertains more to access control than to the safe handling and identification of the material. Thus, the crucial information required on a label is primarily focused on