first tn human resource agency fire extinguisher traininghow to use a fire extinguisher effectively...
Post on 06-Jul-2020
2 Views
Preview:
TRANSCRIPT
© BLR®—Business & Legal Resources 1009
How Fires Start and Keep Burning
OXYGEN
FUEL
HEAT
• The first element required for a fire to get
started is oxygen.
• Next, some sort of fuel is required, such as
wood, paper, or gasoline.
• For the chemical combustion reaction to take
place, the fuel has to be heated to its ignition
temperature by some outside source.
• Once ignited, the heat of the flame keeps the
fuel at the ignition temperature, so it will
continue to burn as long as there are fuel and
oxygen.
• This combination of heat, oxygen, and fuel
working together creates a chemical chain
reaction called combustion.
© BLR®—Business & Legal Resources 1009
Class A Fires
• Wood
• Paper
• Cloth
• Plastic
• Garbage
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Class B Fires
• Gasoline
• Oil
• Solvents
• Grease
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Class C Fires
• Appliances
• Switches
• Panel boxes
• Power tools
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Class D Fires
• Magnesium
• Titanium
• Potassium and sodium
• Pyrophoric materials
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Class K Fires • Cooking oil
• Fat
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Extinguishing Fires
You must remove one of these:
• Heat-The best way to remove heat from an ordinary fire is to dump water on the fire.
• Oxygen-To remove oxygen, you can smother a fire so that it is not exposed to air.
• Fuel- Removing fuel is the most difficult way to extinguish a fire because fuels are usually everywhere. In most cases, the fuel will only be removed once the fire burns it all up.
HEAT
CHAIN REACTION
FUEL
OXYGEN
© BLR®—Business & Legal Resources 1009
Water Extinguishers
• Use water on Class A fires ONLY
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Dry Chemical Extinguishers
• Best all-around choice
• Class BC-rated
• Class ABC-rated
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Carbon Dioxide (CO2) Extinguishers
• Class BC-rated
• Good choice for electronics
• Must be used at close range
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Metal/Sand Extinguishers
• Class D-rated
• Powdered copper
• Sodium chloride
• Air-tight crust
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Halon Extinguishers
• Class B and C fires only
• Leaves no residue
• Limited range
• Expensive to maintain
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Halotron I Extinguishers • Replaces Halon
• Ideal for electronics/clean rooms
• Class BC-rated
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
FE-36 Extinguishers
• Halon/Halotron I replacement
• Less toxic
• More ozone friendly
• Class BC-rated
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Water Mist Extinguishers
• Class AC-rated
• Safety from electrical shock
• Reduces scattering
• Good choice for hospitals and clean rooms
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Fight-or-Flight Decision
When a fire occurs, you have to make a fight-or-flight decision. Only attempt to use an extinguisher if you can say “yes” to every point on this slide and the next slide. If these conditions have not been met, do not fight the fire yourself—evacuate the area.
Here are the conditions under which you may safely use an extinguisher:
• The fire alarm has been activated.
• The fire department has been called.
• The fire is small, contained, and not spreading beyond its starting point.
• The smoke is not bad. You can easily stay low and avoid the smoke.
© BLR®—Business & Legal Resources 1009
© BLR®—Business & Legal Resources 1009
Fight-or-Flight Decision
• The nearest exit is clear so that you can easily evacuate if the fire suddenly increases in size.
• The correct extinguisher for the class of fire is nearby.
• You have been trained to use a fire extinguisher correctly.
© BLR®—Business & Legal Resources 1009
How to Use a Fire Extinguisher Effectively
• Pull the pin at the top of the extinguisher. The pin keeps the handle from being accidentally pressed when the extinguisher is not in use.
• Aim the nozzle toward the base of the fire. Stand 8 to 10 feet from the fire. Note that some types of extinguishers require you to be closer.
• Squeeze the handle lever to discharge the extinguisher. When you release the handle lever, the discharge will stop. Keeping the lever squeezed will result in a continuous flow of extinguishing agent. Squeezing and releasing the lever will result in short bursts of extinguishing agent.
• Sweep the nozzle back and forth toward the base of the fire as you squeeze the handle lever. After the fire appears to be out, watch it carefully, since it might reignite.
p a s s
© BLR®—Business & Legal Resources 1009
To take the required Fire Extinguisher training
quiz please click the following link: Training Test
You will need to enter the following access code.
Access code: FTHRA
top related