Which hazard class number is assigned to radioactive substances?

Which hazard class number is assigned to radioactive substances?

• A. 9
• B. 7
• C. 3
• D. 1

Answer: (B)

Radioactivity is treated as a distinct hazard type in the hazmat class system, and each type has its own numeric designation. The number assigned to radiological hazards is the one used specifically for radioactive materials. This designation signals the need for specialized packaging, shielding, handling, and labeling (including the radiation symbol and appropriate markings). So when asked for the hazard class number for radioactive substances, the correct choice is the one that corresponds to radioactivity—the class reserved for radiation hazards. The other hazard types (such as explosives, flammable liquids, or miscellaneous dangerous goods) have their own different numbers, which is why they aren’t correct for radioactive materials.

Radioactivity is treated as a distinct hazard type in the hazmat class system, and each type has its own numeric designation. The number assigned to radiological hazards is the one used specifically for radioactive materials. This designation signals the need for specialized packaging, shielding, handling, and labeling (including the radiation symbol and appropriate markings). So when asked for the hazard class number for radioactive substances, the correct choice is the one that corresponds to radioactivity—the class reserved for radiation hazards. The other hazard types (such as explosives, flammable liquids, or miscellaneous dangerous goods) have their own different numbers, which is why they aren’t correct for radioactive materials.