Fire and Fire Safety

Carbon Dioxide Extinguishers (CO2)

Used for class B and C fires. Contains carbon dioxide and are highly pressurized. Also, they don't leave harmful residue.

What do you use to put out class A fires?

APW extinguishers, or water extinguishers are only used for class A fires

Class D Fires

Class D Fires are combustible metal fires. Commonly found in a chemical laboratory. Magnesium and Titanium are the most common types of metal fires. Once a metal ignites do not use water in an attempt to extinguish it. Only use a Dry Powder extinguishing agent. Dry powder agents work by smothering and heat absorption.

If a fire is growing as you fight it, what should you do?

Get away from it and call the fire department.

Class C Fires

Involve electrical equipment such as appliances, wiring, circuit breakers, and outlets

Class B Fires

Involves flammable and combustible liquids and gasses such as gasoline, oil, paint, alcohol, kerosene, grease. Fires involving burning gasses, are most easily extinguished by shutting off the source. Burning liquid fuels are extinguished by a proper application of foam or dry chemical agents.

Class A Fires

Ordinary combustible materials, such as wood, cloth, paper, rubber, grass, plastics.

Fires must have these 3 things

Oxygen, fuel, ignition source (heat)

How to use a fire extinguisher/P.A.S.S.

Pull the pin at the top Aim at the base Squeeze the lever slowly Sweep from side to side

If you catch on fire....

Stop, Drop, and Roll!

one of the most effective ways to put out a small fire

a fire extinguisher

fuel

a material that releases energy when it burns

to deprive a small kitchen fire of oxygen, you can cover it with this common kitchen item

a pot lid

combustion

a rapid reaction between oxygen and fuel

A grease fire in your kitchen can be extinguished with this common kitchen ingredient

baking soda

fire that causes the most deaths from carelessness

cigarettes

Dry chemical extinguishers

come in a variety of types and are suitable for a combination of class A, B, or C fires. They are filled with foam/powder and pressurized with nitrogen.

Fire Triangle

fuel, heat, and oxygen - remove one side to stop fire

Water extinguisher

never use a water extinguisher on grease fires, electrical fires. The flames will spread. Water extinguishers are filled with water and pressurized oxygen.

heat's role in starting a fire

providing the activation energy needed to begin the combustion reaction

three most common causes of house fires

small heaters, cooking, faulty electrical wiring

every home should have one on every floor

smoke detector

oxygen

the missing ingredient necessary to start and maintain a fire if you have fuel & heat

Fire

the rapid release of energy from a fuel source in the presence of oxygen after an igniting event

How does water remove two parts of the fire triangle?

the water covers the fuel which keeps it from coming it contact with oxygen. also evaporation of the water uses a large amount of heat causing the fire to cool