As a general rule, you should not attempt to fight a fire if it is spreading rapidly. ABC fire extinguishers extinguish fire by cooling it down. Water will not extinguish most flammable liquid fires.
Can you use water on flammable liquid fire?
Water fire extinguishers are NOT suitable for electrical fires as water is a conductor and you are at risk of electrocution if used on this type of fire. They are also NOT suitable for flammable liquids or flammable metal fires as it will not extinguish the fire.
How do you extinguish a flammable liquid fire?
The quickest way to end a class B fire is to cut off the oxygen. Carbon dioxide gas can often be a good way to dilute the oxygen that is feeding the fire to stop it burning.
Why can’t water put out flammable liquid fires?
Never use a water extinguisher on electrical fires or any fire involving a flammable liquid. As any science student will tell you, water conducts the current. If you spray water onto an electrical fire, inadvertently or intentionally, you risk electrocuting yourself.
Is best suited to extinguish oil or flammable liquid fire?
Class B is best suited to extinguishing oil or flammable liquid fire. Different fire extinguishers helps in tackling various types of fire. There are mainly 5 types of fire extinguishers and 6 classes of fire.
What fires can a water extinguisher be used on?
WATER. Water fire extinguishers have a red label and a class A rating. They are suitable for fighting fires involving solid combustibles such as wood, paper and textiles. A few models are safe on electrical equipment if di-electrically tested.
How does water put out fire?
Water cools and smothers the fire at the same time. It cools it so much that it can’t burn anymore, and it smothers it so that it can’t make any more of the oxygen in the air explode. … Water and oil do not mix, so throwing water on a grease fire only splatters the burning oil. Always use a lid to put out a stove fire.
What is the fastest way to extinguish a fire?
Extinguishing a fire the right way!
- Attack a fire in the direction of the wind.
- Extinguish liquid fires and fires caused by dripping substances from the top down.
- Extinguish wall fires from the bottom up.
- Use several fire extinguishers at once, not one after another.
- Take account of any back draft.
What are 4 ways to extinguish a fire?
All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire.
Why is water not used to extinguish most fires in an organic lab?
Water is not used with all fires in the lab because of the interaction between water and the material on fire. … Also, some flammable materials like metals react violently with water, so adding more water could cause an explosion.
Which substance is best suited to extinguish this type of fire?
Dry chemical fire extinguisher: Dry chemical extinguishers extinguish the fire by interrupting the chemical reaction of the fire triangle. They’re most effective on Class A, B and C fires. CO2 fire extinguisher: Carbon dioxide extinguishers take away the oxygen element of the fire triangle.
Which type of fire extinguisher should not be used on flammable liquids?
Water extinguishers are used on Class A fires involving solid combustibles. They are not suitable for fires fuelled by flammable liquids or where electricity is involved. Foam is a versatile fire extinguisher which can be used for Class A and B fires.
When using foam a Class B fire is extinguished by?
Foam extinguishes Class B Fires by covering the flammable liquid with a foam blanket, thus cutting off the oxygen supply from the combustion process. The water content of the foam will help lower the temperature of the flammable liquid.