HAZMAT Class 7 Radioactive substances

Radioactive substances are materials that emit radiation.

Divisions
Radioactive label on containers aboard a US Navy ship.

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 1.1 1.2 1.3 1.4 1.5 1.6 2.1 2.2 2.2 2.3 3 4.1 4.2 4.3 5.1 5.2 6.1 7 8
A B A
7 - I N/AB                    
7 - II N/AB                    
7 - III Any QuantityB   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).[1]


Source: United States Code of Federal Regulations, Title 49 CFR §177.848 - Segregation of hazardous materials.[2]

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References
  • 49CFR 173 Subpart I
  1. Federal Emergency Management Agency; United States Department of Energy (June 2010). "Radioactive Materials - Transport and Incident Response" (PDF). p. 14. Archived from the original (PDF) on 8 May 2017. Retrieved 20 July 2019.
  2. Pipeline and Hazardous Materials Safety Administration (PHMSA) (October 1, 2011). "49 CFR 177.848 - Segregation of hazardous materials" (PDF). Government Publishing Office. p. 853. Archived from the original (PDF) on 16 July 2019. Retrieved 16 July 2019.
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