Which hazard class corresponds to placards for flammable liquids/combustibles?

Which hazard class corresponds to placards for flammable liquids/combustibles?

• A. Toxic gases
• B. Flammable liquids/combustibles
• C. Corrosives
• D. Explosives

Answer: (B)

Placing placards is about signaling the type of hazard so responders know how to act. Flammable liquids and combustibles are identified as hazard class three. This class covers liquids with a flash point low enough to ignite under typical conditions, which is why the placard emphasizes fire risk. The Class three placard (often a flame symbol in a red-bordered diamond) is distinct from other classes: toxic gases are Class two, corrosives are Class eight, and explosives are Class one. Knowing the class helps you apply appropriate precautions for storage, handling, and emergency response.

Placing placards is about signaling the type of hazard so responders know how to act. Flammable liquids and combustibles are identified as hazard class three. This class covers liquids with a flash point low enough to ignite under typical conditions, which is why the placard emphasizes fire risk. The Class three placard (often a flame symbol in a red-bordered diamond) is distinct from other classes: toxic gases are Class two, corrosives are Class eight, and explosives are Class one. Knowing the class helps you apply appropriate precautions for storage, handling, and emergency response.