What are the three elements needed to fire must have to keep burning?
The Fire Triangle. Three things are required in proper combination before ignition and combustion can take place—Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen.
What are fire safety elements?
There are two components to a fire ‘system’: the physical or hardware components (for example, smoke detectors, alarms and fire sprinklers) and the operational arrangements or software (for example, maintenance, testing, training and emergency planning).
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 4 stages of fire?
Compartment fire development can be described as being comprised of four stages: incipient, growth, fully developed and decay (see Figure 1).
What is the best defense against fire?
As always, the best defense against a fire is to be prepared. Take a moment to look at your fire extinguisher.
Do all fires need oxygen?
Oxygen. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. … When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.). This process is known as oxidation.
Which of the following is not required for a fire to start and continue to burn?
Removing the fuel thereby decreases the heat. Without sufficient oxygen, a fire cannot begin, and it cannot continue. With a decreased oxygen concentration, the combustion process slows. Oxygen can be denied to a fire using a carbon dioxide fire extinguisher, a fire blanket or water.
Is fire a form of dry heat?
A burn is caused by dry heat, for example, by an iron or fire. A scald is caused by something wet, such as hot water or steam. Burns may also be caused by chemicals and electricity.