Dangerous goods regulations define radioactive material as any material that contains radionuclides and which exceeds certain pre-defined values for both activity concentration and total activity. A radionuclide is an atom with an unstable nucleus that is subject to radioactive decay. This decay can result in the emission of ionizing radiation, 

Sub-Divisions

There are no subdivisions within Class 7, Radioactive Material.

Reason for Regulation

Radionuclides undergoing radioactive decay emit ionizing radiation, which can be harmful to living organisms if not properly controlled. Ionizing radiation can penetrate living tissue, leading to damage of cells and DNA, potentially leading to cancer and other diseases. The severity of the risk to human health depends on the type, energy, and amount of the ionizing radiation, as well as the duration of exposure.

Commonly Transported Radioactive Material

1. Radioactive ores
2. Medical isotopes
3. Yellowcake
4. Density gauges
5. Mixed fission products
6. Surface contaminated objects
7. Caesium radionuclides / isotopes
8. Iridium radionuclides / isotopes
9. Americium radionuclides / isotopes
10. Plutonium radionuclides / isotopes
11. Radium radionuclides / isotopes
12. Thorium radionuclides / isotopes
13. Uranium radionuclides / isotopes
14. Depleted uranium / depleted uranium products
15. Uranium hexafluoride
16. Enriched Uranium