Which item is included in Type B Package Markings?

• A. The words 'TYPE A'
• B. The words 'TYPE B(U)' or 'TYPE B(M)' as appropriate
• C. Trefoil symbol
• D. Serial number

Answer: (B)

Type B package markings must explicitly identify the Type B designation used for the shipment. The official marking is to write TYPE B(U) or TYPE B(M), chosen to show whether the contents are non-fissile (U) or fissile (M). This clarifies to handlers and authorities that the package has been tested to Type B standards appropriate for that content class. The radiation symbol is a separate label used on radioactive material shipments, while Type A markings would apply to Type A packages, and a serial number is not the defining element of the Type B marking.