Powder Fire Extinguishers
Types of Powder Fire Extinguishers
Standard Dry Powder Extinguishers (ABC Extinguishers): Suitable for Class A, B, and C fires: Class A: Fires involving solid materials like paper, wood, and textiles. Class B: Fires fueled by flammable liquids such as petrol, diesel, and paint. Class C: Fires caused by flammable gases like butane and methane. Not recommended for use indoors. Also known as multi-purpose fire extinguishers or dry chemical fire extinguishers.
Specialist Dry Powder Extinguishers:
Designed for specific scenarios: L2 Powder Extinguishers: For fires involving the flammable metal lithium. M28 Powder Extinguishers: For all other flammable metals. These specialist extinguishers address unique risks.
How Dry Powder Fire Extinguishers Work?
Smothering Action: Dry powder extinguishers form a barrier between the fuel and the oxygen source, smothering the fire.
No Cooling Effect: Unlike some other extinguishers, they do not cool the fire significantly.
Pros and Cons of Dry Powder Fire Extinguishers
Pros: Effective on most types of fires. Rapid fire suppression. Specialist versions work on flammable metals.
Cons: Slight risk of re-ignition. Powder residue can spread over a large area. Vision obstruction and inhalation risk in enclosed spaces.
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