Explain in brief different types of fire extinguishers.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Explain in brief different types of fire extinguishers.
Fire extinguishers are classified based on the type of fire they are designed to extinguish. There are several types, each suitable for specific classes of fires:
Water-Based Fire Extinguishers (Class A): These extinguishers contain water or a water-based solution and are effective against Class A fires, which involve ordinary combustible materials such as wood, paper, cloth, and plastics. They work by cooling the fuel and extinguishing the flames. Water extinguishers should not be used on fires involving electrical equipment or flammable liquids.
Dry Chemical Fire Extinguishers (Class ABC): Dry chemical extinguishers use a powdered chemical agent to smother the fire and interrupt the chemical reaction of the fire triangle. They are versatile and can be used on Class A, B, and C fires, which involve flammable liquids, gases, and electrical equipment. There are different types of dry chemical extinguishers, including monoammonium phosphate (ABC), sodium bicarbonate (BC), and potassium bicarbonate (Purple K).
Carbon Dioxide (CO2) Fire Extinguishers (Class BC): CO2 extinguishers contain compressed carbon dioxide gas that displaces oxygen, smothering the fire and suppressing combustion. They are suitable for Class B and C fires involving flammable liquids and electrical equipment. CO2 extinguishers leave no residue, making them ideal for use on sensitive electrical equipment.
Foam Fire Extinguishers (Class AB): Foam extinguishers discharge a foam solution that forms a blanket over the fuel surface, cutting off the oxygen supply and suppressing the fire. They are effective against Class A and B fires, involving flammable liquids such as gasoline, oil, and solvents. Foam extinguishers are not suitable for use on electrical fires.
Wet Chemical Fire Extinguishers (Class K): Wet chemical extinguishers contain a potassium-based solution that reacts with cooking oil and grease fires (Class K) to create a soap-like layer, which cools the fire and prevents re-ignition. They are specifically designed for commercial kitchen environments where deep-frying and cooking with oils are common.
Choosing the right type of fire extinguisher for your specific environment and potential fire hazards is essential for effective fire protection and safety. Regular maintenance and inspection of fire extinguishers are also necessary to ensure they are operational and ready for use in case of an emergency.