Fire Protection

Presentation on theme: "Fire Protection"— Presentation transcript:

Fire Protection

Four Components for a Fire

Fuel

(any combustible material: solid, liquid, or gas)

Oxygen

(in the air we breath, can ignite fire)

Heat

(the energy needed for the fuel to give off enough vapours for a fire to ignite)

Chemical Chain Reaction

– happens when fuel, oxygen and heat combine and a fire occurs.

Ways that Fires can be Controlled

By cooling burning materials.

By removing oxygen from the fire.

By removing fuel.

Interrupt the chain reaction in a fire.

Fire extinguishing agents.

Describe the Transfer of Heat

Example: a campfire

A metal poker left in a fire gets red hot at the end near the flame.

Heat is

CONDUCTED

up the handle and it can become to hot to touch.

People around the fire are warmed by

RADIATION

BUT only on the side facing the fire.

Marshmallows toasted above the fire are heated by

CONVECTION

.

How are Fires Classified?

There are 4 classes of fires:

Class A

Ordinary material like wood, paper, and rubbish.

Class B

Flammable or combustible gasses and liquids like gasoline, kerosene, propane, grease, paint and paint thinner.

Class C

Energized electrical equipment.

Power tools, appliances, and light switches.

Class D

Combustible metals like titanium,

magensium

, sodium and potassium.

The Methods of Fire Protection

Practice good housekeeping.

Avoid electrical hazards

Use care when handling flammable combustible and explosive materials.

Respond quickly and correctly.

List of Fire Protection Devices

Human observer.Automatic sprinkler system.Smoke, flame or heat detector.

Two Types of Fire Extinguishers

Fixed – sprinklers, hydrants, carbon dioxides, dried chemical and foam.Portable (handheld class A – D)