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/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 (0.0050mSv) per hour.
II - Low radiation levels: >0.5–50 millirems (0.0050–0.5000mSv) per hour, on surface. 1.0 millirem (0.010mSv) maximum at 3.3 feet (1m).
III - Higher radiation levels: >50–200 millirems (0.50–2.00mSv), on surface. 10 millirems (0.10mSv) maximum at 3.3 feet (1m).[1]
Source: United States Code of Federal Regulations, Title 49 CFR §177.848 - Segregation of hazardous materials.[2]
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