Where should you aim a fire extinguisher nozzle when putting out a fire * 2 points?

Aim at the base of the fire. If you aim at the flames (which is frequently the temptation), the extinguishing agent will fly right through and do no good. You want to hit the fuel. Squeeze the top handle or lever.

What 3 components are needed to start a fire?

Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.

Which part of fire extinguisher should pull first to unlock it?

For an easy-to-remember 4-step process to operating a fire extinguisher, learn the PASS system: Pull the pin while holding the extinguisher away from you to unlock the mechanism. Aim low toward the base of the fire. Squeeze the lever slowly.

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 is the fastest way to extinguish a fire?

Luckily, Class A fires are the easiest type to extinguish. The Fire Equipment Manufacturer’s Association recommended using a water or foam fire extinguisher on Class A fires. You can also use water to douse the fire, as it can remove the fire’s heat supply.

IMPORTANT:  How much do fire truck tires weigh?

What is the main cause of death in fire?

The characteristic biphasic distribution of carboxyhemoglobin in fire victims together with other observations suggest that the principal causes of death are carbon monoxide followed by carbon dioxide poisoning and/or oxygen deficiency, while the influence of heat is considered to be of minor importance.

Is nitrogen needed to start a fire?

Air is made-up of about 21% oxygen, 78% nitrogen and less than 1% other gases including carbon dioxide and water vapor. Fire only needs about 16% oxygen to burn. … These elements are fuel, heat and oxygen. These three elements make up the fire triangle.

How much oxygen is needed to start a fire?

Oxygen. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire.

Fire safety