Class 7: Radioactive materials
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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.
There are no divisions or sub-classes within Class 7 hazardous materials, however transport labels and cargo transport placards can vary dependent on the calculated transport index. In most instances, cargo transport placards conform to model 7D.
Examples of commonly transported radioactive materials
Class 7 radioactive material examples are density gauges, depleted uranium products, fire suppression systems, smoke detectors, medical isotopes, x-ray machinery.
