🔍 Key Concepts

• How Halon and CO₂ extinguish fires (smothering, cooling, interrupting the chemical reaction) • Basic fire classes (A: ordinary combustibles, B: flammable liquids, C: electrical, D: combustible metals) • Health and safety aspects of Halon vs CO₂ (toxicity, breathing safety)

💭 Think About

• Think about the primary mechanism by which Halon stops a fire. Is it mostly cooling, smothering (displacing oxygen), or something else? • Which extinguisher type is commonly associated with Class D (combustible metal) fires? Is that usually Halon, CO₂, or a special agent? • Would any properly designed fire-extinguishing agent ever be described as completely safe to breathe "under all conditions," especially in an enclosed space?

✅ Before You Answer

• Check which fire classes Halon is typically rated for versus CO₂ and note if Class D (metals) is normally included. • Confirm whether any standard extinguisher agent is advertised as non‑toxic under all conditions, or if there are always exposure limits. • Verify which agent is known for interrupting the chemical chain reaction of combustion, rather than primarily cooling or just displacing oxygen.