🔍 Key Concepts

• How Halon works as a fire extinguishing agent (chemical interruption of combustion vs. cooling or smothering) • The effect of high Halon concentration on humans in a confined space • Difference between toxic byproducts of combustion and the agent’s normal hazard

💭 Think About

• When Halon is discharged in an enclosed space, what changes in the air that people are breathing? • Is the main concern what Halon does if it touches your skin or eyes, or what happens when you try to breathe in a space filled with it? • How is Halon’s typical hazard to people different from the irritation you might get from smoke or powder extinguishers?

✅ Before You Answer

• Verify which choice relates to breathing/respiration in an enclosed space rather than local irritation (eyes/skin). • Consider whether the hazard described happens only when Halon is directly in a flame for a long time, or also in a normal, quick discharge. • Check which option best matches a system that floods a space (like a machinery space) and why people must evacuate before discharge.