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#ABCD FIRE EXTINGUISHERS HOW TO#
#ABCD FIRE EXTINGUISHERS PORTABLE#

Use the correct fire extinguisher type to fight the fire.

Know what type and class of material is burning.

Be sure that you are trained to use a fire extinguisher before you try to fight a fire.

#ABCD FIRE EXTINGUISHERS PORTABLE#

What you should know when using a portable fire extinguisher? Back to top These symbols are recommended by the National Fire Protection Association (NFPA) in the USA. Portable fire extinguisher may use the following markings to indicate which class of fire they are designed to fight. How will portable fire extinguishers be marked? Back to top May make breathing difficult in enclosed areasĬheck with your supervisor regarding equipment for Class D fire fighting The residue can damage motors, computers and other electrical equipment.īelow is a summary of these and other common extinguishers. Be accurate when using as they have a short to moderate spray range and last only 10 to 25 seconds.īe cautious of the residue after using dry chemical extinguishers. The powder also works to break the chemical reaction. The extinguishers discharge a blanket of fine powder which creates a break between the fuel and the oxygen in the air. These extinguishers will be marked for the classes they are designed to extinguish (e.g., ABC type extinguisher will put out Class A, B and C fires).

Do not use CO 2 extinguishers for Class A fires because the fire may continue to smolder and re-ignite after the CO 2 disperses.ĭry Chemical extinguishers: Dry chemical extinguishers are the most common and available in few types.

Only use in a confined space if workers have appropriate respiratory protection.

Do not use CO 2 extinguishers in confined spaces as CO 2 can displace the oxygen in the air, making breathing difficult.

A hard horn attached to the end of the spray tube helps to contain and aim the spray at the target area. It has a moderate spray range and last only 10 to 30 seconds. Be thorough when using a CO 2 extinguisher. When used for Class B and C fires, the CO 2 covers the fuel by blanketing it, and stops the reaction at the surface by displacing oxygen. Water is ineffective as it helps to spread the liquid and the fire.Ĭarbon Dioxide (CO 2) extinguishers: The extinguishing media is pressurized CO 2.

Do not use water to extinguish flammable liquid or cooking oil fires.

Water is a good conductor and can increase the possibility of electrocution.

Do not use water to extinguish an electrical fire.

When used for Class A fires, these extinguishers remove the heat from the burning materials.

Water extinguishers: Water extinguishers are filled about two-thirds with water and then pressurized with air. Three main types of portable fire extinguishers include: Each has its own characteristics, capabilities, and limitations. To fight the different classes of fires, there are different types of fire extinguishers. What are the different types of portable fire extinguishers? Back to top

Class K - Fires involving combustible cooking oils, or fats in cooking appliances.

Class D - Fires involving combustible metals such as magnesium, titanium, sodium, and potassium.

Class C - Fires involving energized (live) electrical equipment such as motors, appliances, or power tools.

Class B - Fires involving flammable liquids, gases, oil, paints, or lacquer.Class A - Fires involving ordinary combustibles such as paper, wood, cloth, rubber, or plastics.What are the different classes of fires? Back to topįires are grouped into classes which depend on the material or substance that is present. Pull the fire alarm, evacuate the area, and then call the fire department.

If you are not confident about your ability to handle the situation (even if you are trained in fire fighting), or if you do not have the correct type of fire extinguisher, do not fight the fire.

The fire is spreading beyond the spot where it started.

#ABCD FIRE EXTINGUISHERS HOW TO#

You do not know how to use the fire extinguisher.You do not know what type of fire extinguisher to use.You do not know what material is burning.What should I know about fighting fires? Back to top If you remove any of these four elements, the fire will not be able to burn. Chemical reaction - the process of burning.Oxygen - to sustain combustion (the fire).Heat - to raise the material to its ignition (burning) temperature.Fuel or combustible material - something to burn, such as paper or wood.Four elements must be present at the same time for a fire to take place: To understand how to prevent fires, it is important to know how a fire can occur. What is the fire tetrahedron? Back to top You are here: Fire Extinguishers - Portable