Fire requires fuel, heat and oxygen to burn. Fire extinguishers apply an agent that will cool burning heat, smother fuel or remove oxygen so the fire cannot continue to burn. A portable fire extinguisher can quickly control a small fire if applied by an individual properly trained.
What is in a fire extinguisher?
Dry chemical fire extinguishers work with a pressurized spray of a dry chemical that will blanket a fire and extinguish it. The most common agents used in dry chemical fire extinguishers are monoammonium phosphate and sodium or potassium bicarbonate.
What is the function of fire extinguisher?
Introduction to Fire Protection
They are typically water-based fire extinguishers. Class B Extinguishers are used on flammable liquid fires, such as petroleum or oil-based products. Class C Extinguishers are usually carbon dioxide extinguishers used on electrical equipment fires.
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.
What are the three ways of controlling fire?
Fire can be extinguished in 3 ways:
- By removing the fuel.
- By removing the heat.
- By cutting off the air supply to the burning substance.
Are fire extinguishers explosive?
What Causes Fire Extinguishers To Explode? Any sealed container under high enough pressure and exposed to intense heat can explode. Fire extinguishers are designed to handle the heat, so most likely will not explode under normal fire conditions. They are also built with safety devices included.
Should homes have fire extinguishers?
Yes, provided you know when and how to use it. Fire extinguishers can be a small but important part of the home fire safety plan. They can save lives and property by putting out a small fire or suppressing it until the fire department arrives. … Remember, lives are more important than property.
What are the 4 steps in using a fire extinguisher?
The acronym PASS is used to describe these four basic steps.
- Pull (Pin) Pull pin at the top of the extinguisher, breaking the seal. …
- Aim. Approach the fire standing at a safe distance. …
- Squeeze. Squeeze the handles together to discharge the extinguishing agent inside. …