Hazard class 7 Radioactive materials
Class 7 radioactive materials are defined in the dangerous goods regulations as any material containing radionuclides where both the activity concentration and the total activity exceeds certain pre-defined values. A radionuclide is an atom with an unstable nucleus, and which consequently is subject to radioactive decay.
Examples of commonly transported explosives
Class 7 radioactive material examples are density gauges, depleted uranium products, fire suppression systems, smoke detectors, medical isotopes, x-ray machinery.