Radioactive Material Markings

You must mark each package containing a Class 7 - Radioactive materials in the following manner:

• Mark the package's gross mass, including the unit of measurement, if its gross mass is greater than 50 kg or 110 pounds.
• Legibly and durably mark the outside of each industrial, Type A, Type B(U), or Type B(M) package, in letters at least 13 mm (0.5 in) high, with the words "TYPE IP-1," "TYPE IP-2," "TYPE IP-3," "TYPE A," "TYPE B(U)," or "TYPE B(M)," as appropriate.
• Legibly and durably mark the outside of each package that conforms to an IP-1, IP-2, IP-3, or a Type A package design with the international vehicle registration code of the country of origin of the design. The international vehicle registration code for packages designed by a United States company or agency is "USA."
• Plainly mark a radiation symbol on the outermost receptacle of each package that conforms to a Type B(U) or Type B(M) package design. This mark must be embossed, stamped or applied by other means resistant to the effects of fire and water.
• Mark "USA" (or the appropriate vehicle registration code) in conjunction with the specification marking, or other package certificate identification, on each Type B(U), Type B(M), or fissile material package destined for export.

To learn more about DOT HAZMAT Awareness visit our DOT HAZMAT General Awareness Online Training web page.