Water extinguishers are one of the most cost-effective ways to fight Class A fires, those fuelled by solid materials such as paper, wood and textiles. There are four different types of water extinguishers: water jet, water spray, water with additives and water mist or fog.
What is the best material for fire extinguisher?
To fight a Class D fire, the extinguisher requires a chemical that removes oxygen from the equation but will not react with metal. Class D extinguishers use powder forms of graphite, sodium chloride, or copper. These materials smother the burning material, preventing oxygen from getting to the fuel source.
Which is the most common and effective solution for extinguishing fire?
Water is the most common agent, but others such as dry chemical, halon, halogenated agents and foam can be used effectively.
Which is the best fire extinguisher and why?
Carbon dioxide is the best fire extinguisher. It displaces oxygen from the air or takes away the oxygen element from the fire triangle which helps in extinguishing the fire. It is a non-combustible gas.
What are the 4 types of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire.
- Class A extinguishers will put out fires in ordinary combustibles such as wood and paper.
- Class B extinguishers are for use on flammable liquids like grease, gasoline and oil.
What is the most flammable metal?
Alkali metals: highly combustible metals that react with water to generate hydrogen, and are easily ignited; examples include sodium, potassium, lithium, rubidium and cesium.
What type of fire extinguisher is best used in extinguishing grease fire?
For fires involving cooking oils and fats (a Class F fire), a wet chemical extinguisher can be used. The wet chemical fire extinguisher can also be used on Class A fire, but foam or water extinguishers are more common. Dry powder extinguishers smother fires by forming a barrier between the fuel and source of oxygen.
Which is the extremely effective fire extinguishing agent?
14.6. 1 Water. Due to its cooling power, water is the most effective extinguishing agent for many types of fire. It is particularly suitable for fires in carbonaceous materials.
What is the name of the extremely effective fire extinguishing agent?
Halons are electrically non-conducting and have been acknowledged as the most effective universal extinguishing agent for aircraft use. They work mainly by chemically interrupting the reaction described as the ‘Fire Triangle'(Fuel-Oxygen-Heat) which must be sustained for a fire to continue.
What is the most common extinguishing agent for Class A fires?
Water mist extinguishers are primarily for Class A fires, although they are safe for use on Class C fires as well. Cartridge Operated Dry Chemical – Cartridge Operated fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle.
Is best suited to extinguishing oil or flammable liquid fire?
The correct answer is option (c) foam.
Foam is the best suited to extinguishing oil or flammable liquid fire.
What are the 3 methods of extinguishing a fire?
All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire. One of the most common methods of extinguishing a fire is by cooling with water.
What are the materials used in fire extinguisher?
Most of the other elements of a fire extinguisher are made of metal. The pressure vessel is generally made of an aluminum alloy, while the valve can either be steel or plastic. Other components, such as the actuating handle, safety pins, and mounting bracket, are typically made of steel.