🔍 Key Concepts

• Halon 1301 properties and typical uses on vessels • Difference between toxic vs. non-toxic at normal concentrations • How Halon actually interrupts the combustion process compared with CO₂ and foam agents

💭 Think About

• Compare how CO₂ puts out fires with how Halon agents are designed to work—do they smother the fire or do something else chemically? • Think about why Halon systems were popular for protecting machinery spaces and electronics. Would a residue‑forming agent be chosen for that job? • Ask yourself: At the concentrations used in fixed systems, is Halon 1301 immediately deadly to personnel, or is there a safe exposure range?

✅ Before You Answer

• Verify which agent is more effective by weight for extinguishing fires: Halon 1301 or CO₂ • Confirm whether Halon 1301 is considered safe for brief human exposure at normal design concentrations • Check whether Halon 1301 systems are described as clean agents that leave no residue and are suitable for electrical/electronic equipment