UN placards indicate general hazard recognition by:

UN placards indicate general hazard recognition by:

• A. Showing the NFPA rating
• B. Indicating the shipping weight
• C. Giving the UN hazard class number
• D. Displaying the chemical name

Answer: (C)

UN placards are designed to give you a quick read on the kind of hazard you’re dealing with. They do this by showing the UN hazard class number, which points to the broad category of danger (for example, whether the material is a gas, a flammable liquid, an oxidizer, a toxic substance, etc.). That number lets responders recognize the general risk at a glance and choose appropriate safety measures, distances, and response tactics. This is why the hazard class number is the best fit for what the placard communicates. It isn’t about the exact chemical name or the shipping weight, and it isn’t tied to the NFPA rating, which is a separate on-site system used for internal hazard communication.

UN placards are designed to give you a quick read on the kind of hazard you’re dealing with. They do this by showing the UN hazard class number, which points to the broad category of danger (for example, whether the material is a gas, a flammable liquid, an oxidizer, a toxic substance, etc.). That number lets responders recognize the general risk at a glance and choose appropriate safety measures, distances, and response tactics.

This is why the hazard class number is the best fit for what the placard communicates. It isn’t about the exact chemical name or the shipping weight, and it isn’t tied to the NFPA rating, which is a separate on-site system used for internal hazard communication.