What is the smothering in fire extinguisher?

What is the smothering in fire extinguisher?

Smothering is the process of depriving the fire of the oxygen needed to sustain the combustion process. Interference is the process of applying extinguishing agents to the fire that inhibit the chemical chain reaction at the molecular level.

What is the density of a fire extinguisher?

1.56 g/L.
At this temperature, it has a density of 1.56 g/L.

What kind of portable fire extinguisher is used to smother a fire?

Soda Acid Extinguisher Sodium bicarbonate (soda) and sulphuric acid are the prime components of the extinguisher. They combine to form a chemical reaction to produce carbon dioxide gas, which is used to smother the fire.

What agents smother a fire?

Water and foam fire extinguishers extinguish the fire by taking away the heat element of the fire triangle. Foam agents also separate the oxygen element from the other elements. Water extinguishers are for Class A fires only; they should not be used on Class B or C fires.

How do you suffocate a fire?

Instead, try one of these methods:

1. If the fire is small, cover the pan with a lid and turn off the burner.
2. Throw lots of baking soda or salt on it. Never use flour, which can explode or make the fire worse.
3. Smother the fire with a wet towel or other large wet cloth.
4. Use a fire extinguisher.

What type of fire extinguisher is not suitable for a materials fire paper and general waste?

Disadvantages: CO2 is an asphyxiant if used in confined spaces and cannot be used on solid fuel fires such as wood, paper or textile.

What is fire Class C?

Class C fires involve energized electrical equipment. Extinguishers with a C rating are designed for use with fires involving energized electrical equipment.

What is extinguishing agent?

Fire Extinguisher Types (extinguishing agents) There are eight different extinguishing agents used in fire extinguishers. They consist of ABC Dry Chemical, BC Dry Chemical, Dry Powder, Water, Foam, Wet Chemical, Halogenated, and Carbon Dioxide.

What are portable fire extinguishers?

Portable fire extinguishers function by releasing an extinguishing agent intended to cool the fuel, remove or displace the oxygen, or stop the chemical reaction. Fire extinguishers can put out or control a fire until help arrives.

Why is co2 a fire extinguisher?

Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.

What type of fire extinguisher is halon?

Halon Extinguishers are used for fighting class B and class C fires (And sometimes A Fires). Halon uses a liquefied gas, pressurized with nitrogen, which discharges as a vapor causing no cold or static shock and no impairment of the operator’s vision.

Which is the most common type of fire extinguisher?

Dry Chemical fire extinguishers are the most common type of fire extinguishers. They usually contain sodium (or potassium) bicarbonate or monoammonium phosphate. Multi-purpose (ABC) fire extinguishers use monoammonium phosphate as an extinguishing agent that can be used on Class A, B and C fires.

What kind of foam is a fire extinguisher made of?

What Is Fire Extinguisher Foam Made Of? A fire extinguisher foam is a low-density fluid made up of small air-filled water bubbles. Essentially, it has three ingredients mixed in specific proportions: water, foam, and air.

How are chemicals held in a fire extinguisher?

In foam extinguishers, the chemical agent is generally held under stored pressure. In dry powder extinguishers, the chemicals can either be put under stored pressure, or a gas cartridge expeller can be used; the stored-pressure type is more widely used.

When to use a carbon dioxide fire extinguisher?

Carbon dioxide fire extinguishers can be used on Class B and C fires. They’re environmentally safe and leave no residue behind, therefore they are often classified into the clean agent group. However, keep in mind that they work only within short distances, usually between 3 and 10 feet ( source ).