Under what circumstances would you use a fire extinguisher to tackle a fire?

Use: Suitable for Class A, B and C fires, they are specifically designed to tackle fires involving solids, flammable liquids and flammable gases. They can also be used on electrical equipment. Dangers: Automatic fire extinguishers are not suitable for fires involving cooking oil or fat.

Why do firefighters use foam instead of water?

Class A foams are used to lessen the surface tension of water, which improves the wetting and saturation of water used to fight Class A fires, which are fueled by ordinary combustibles.

Why do firefighters rescue before water?

We do not want to introduce water that may turn to steam and burn the occupants. So we try to use a combination of Positive pressure and interior attack to give the occupants the best chance of survival.

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.

When should fire extinguishers be used?

You should only consider using a fire extinguisher if all members of your home have been alerted to the fire. Make sure you are safe from smoke and that the fire is not between you and your only escape route.

When would you use a fire extinguisher in the workplace?

Employers are generally required to provide portable fire extinguishing equipment in the workplace for use in fighting incipient-stage fires. An “incipient-stage fire” means initial or beginning stage that can be controlled or extinguished by portable fire extinguishers.

What do firefighters use to put out electrical fires?

An electrical fire is known as a Class C fire, and so requires a Class C fire extinguisher. A fire extinguisher marked ABC is also acceptable, as it’s capable of stopping fires caused by wood/trash, liquids, and electrical equipment. Many fire extinguishers made for home use are ABC extinguishers.

What do firefighters drop on forest fires?

Known as Phos-Chek, the fire retardant has been used to fight blazes since 1963 and has been the main long-term fire retardant used by the California Department of Forestry & Fire Protection in recent years.

What is class A foam?

Class A foams are used to extinguish fires caused by wood, paper, and brush. Class A foams generally do not contain per- and polyfluoroalkyl substances (also known as “PFAS”).

How do firefighters use the fire triangle?

One of the first things firefighters do to extinguish a fire is to apply a cooling agent – usually water. Firefighters will also turn off the electricity in a burning building to remove a source of heat. The second element in the fire triangle is fuel. A fire needs a fuel source in order to burn.

Where should fire extinguishers be located?

To prevent fire extinguishers from being moved or damaged, they should be mounted on brackets or in wall cabinets with the carrying handle placed 3-1/2 to 5 feet above the floor. Larger fire extinguishers need to be mounted at lower heights with the carrying handle about 3 feet from the floor.