title: HAZMAT Class 7 Radioactive substances
text: # HAZMAT Class 7 Radioactive substances
  
  Radioactive substances are materials that emit radiation.
  
  ## Divisions
  
  Any quantity of packages bearing the RADIOACTIVE YELLOW III label (LSA-III).
  
  Some radioactive materials in "exclusive use" with low specific activity radioactive materials will not bear the label, however, the RADIOACTIVE placard is required.
  
  ## Placards
  
  * Hazardous Materials
  * Class 7: Radioactive
  
  ## Compatibility Table
  
  Load and Segregation Chart :
  
  | | Weight | Weight | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.2 | 2.3 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 7 | 8 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | | Weight | Weight | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.2 | A | B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | A | 7 | 8 |
  | 7 - I | N/A | B | | | | | | | | | | | | | | | | | | | | |
  | 7 - II | N/A | B | | | | | | | | | | | | | | | | | | | | |
  | 7 - III | Any Quantity | B | | | | | | | O | | | | | | | | | | | | | |
  | Key |||||||||||||||||||||||
  | The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. X: These materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. O: Indicates that these materials may not be loaded, transported or stored together in the same transport vehicle or storage facility during the course of transportation, unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. B: Radioactive I and II are not required to be placarded, and does not have segregation requirements. Radioactive III must be placarded in any quantity. I - Extremely low radiation levels: 0.5 millirems (0.0050 mSv) per hour. II - Low radiation levels: >0.5–50 millirems (0.0050–0.5000 mSv) per hour, on surface. 1.0 millirem (0.010 mSv) maximum at 3.3 feet (1 m). III - Higher radiation levels: >50–200 millirems (0.50–2.00 mSv), on surface. 10 millirems (0.10 mSv) maximum at 3.3 feet (1 m). Source: United States Code of Federal Regulations, Title 49 CFR §177.848 - Segregation of hazardous materials. |||||||||||||||||||||||
  