Which hazard class division is associated with a moderate fire?

Which hazard class division is associated with a moderate fire?

• A. 1.3
• B. 1.1
• C. 1.2
• D. 1.4

Answer: (D)

In this material, the main idea is how Class 1 explosives are divided to reflect different levels of fire and explosion hazards. Division 1.4 is described as a minor explosion hazard with limited blast effects, so any fire risk it presents tends to be more noticeable while the potential for a large or catastrophic explosion is not expected. That makes it the best fit for a moderate fire hazard: the item can burn and contribute to a fire, but it doesn’t carry a significant blast threat. The other divisions describe scenarios with larger blast or projection hazards (mass explosion, projection, or a more substantial fire/explosion combination), so they don’t align as closely with a moderate fire risk. Hence, division 1.4 is associated with a moderate fire hazard in this context.

In this material, the main idea is how Class 1 explosives are divided to reflect different levels of fire and explosion hazards. Division 1.4 is described as a minor explosion hazard with limited blast effects, so any fire risk it presents tends to be more noticeable while the potential for a large or catastrophic explosion is not expected. That makes it the best fit for a moderate fire hazard: the item can burn and contribute to a fire, but it doesn’t carry a significant blast threat.

The other divisions describe scenarios with larger blast or projection hazards (mass explosion, projection, or a more substantial fire/explosion combination), so they don’t align as closely with a moderate fire risk. Hence, division 1.4 is associated with a moderate fire hazard in this context.