🔍 Key Concepts
• Fire classes and fuel types (ordinary combustibles, flammable liquids, electrical, metals)
• How blanketing removes oxygen from the fire triangle (heat, fuel, oxygen)
• Which class of fire is commonly fought with foam or smothering agents
đź’ Think About
• For each fire class, ask: what is burning, and what is the usual extinguishing method? Cooling? Non‑conductive agent? Special dry powders?
• Which type of fire is most effectively controlled by cutting off the oxygen with a blanket or foam layer rather than mainly cooling with water?
• Think about which fuel would spread if you used a strong water stream, making blanketing more important.
âś… Before You Answer
• Match each fire class (A, B, C, D) to its correct fuel type before deciding
• Recall which class is often fought with foam, CO₂, or vapor‑suppressing agents that form a blanket over the surface
• Eliminate any class where water cooling is the primary standard method of extinguishing