Question 336Safety & Environmental - Assistant Engineer
70% to passWhich of the following statements is true concerning the Halon 1301 fire extinguishing agent?
AThe agent is less effective than carbon dioxide.
BHalon extinguishes the fire by a chain breaking reaction.
CThe agent cannot be used on electrical fires because it leaves a residue.
DThe agent is highly toxic as stored in pressurized cylinders.
AI Explanation
The correct answer is B) Halon extinguishes the fire by a chain breaking reaction. Halon 1301 is an effective fire extinguishing agent that works by interrupting the chemical chain reaction of a fire. It does this by interfering with the free radicals involved in the combustion process, stopping the fire from spreading. This makes Halon more effective than carbon dioxide, which primarily works by displacing oxygen. Halon also does not leave any residue, making it suitable for use on electrical fires. Additionally, while Halon is stored under pressure, it is not considered highly toxic when used properly as a fire extinguishing agent.
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