Which statement correctly distinguishes Type A and Type B packages in the transport of radioactive material?

• A. Type A for large shipments; Type B for limited activity
• B. Type A for limited activity; Type B for large/high-activity shipments
• C. Type A for medical shipments; Type B for industrial shipments
• D. Type A always; Type B never

Answer: (B)

The key idea is that the type of package is chosen based on the amount of radioactivity being shipped and the level of containment and safety required. Type A packages are used for limited-activity shipments; they are designed to withstand normal transport and minor accident conditions while keeping the contents contained. Type B packages are used for larger or higher-activity shipments; they must be able to endure more severe accident scenarios and thus have stricter design, testing, and containment requirements. So, the statement that Type A is for limited activity and Type B for large/high-activity shipments accurately reflects how these classifications are applied. It’s not about whether the shipment is medical or industrial, and it isn’t an absolute rule that applies in all cases—some low-activity sources might be Type B if the situation requires, but the general distinction is driven by activity level and the corresponding safety tests.