What is an extinguishing agent?

What is an extinguishing agent?

Fire Extinguisher Types (extinguishing agents) They consist of ABC Dry Chemical, BC Dry Chemical, Dry Powder, Water, Foam, Wet Chemical, Halogenated, and Carbon Dioxide. As shown below, each of these agents apply to one or more of the fire classes mentioned above.

What does extinguisher mean in science?

also fire-extinguisher. Word forms: plural fire extinguishers. countable noun. A fire extinguisher is a metal cylinder which contains water or chemicals at high pressure which can put out fires.

What is the extinguishing agent for Class 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.

What are fire extinguishers used for in science?

A portable, hand-held, fire extinguisher is a basic and required safety tool in the school science facility. It is the science teacher’s first line of defense in the event of a fire, either in the laboratory or in the chemical storage area.

What are extinguishing agents made of?

A dry chemical agent called sodium bicarbonate. It is non-toxic, non-conductive and non-corrosive. It is easy to cleanup, requiring only vacuuming, sweeping or flushing with water. Extinguishers with sodium bicarbonate are usually used in residential kitchens, laboratories, garages, etc.

What are extinguishing media?

Extinguishing media include foam concentrates, liquids, powders or gases which are used to obtain a much better fire extinguishing performance than water. These media can be used in foam sprinkler systems, emergency vehicles or portable or mobile extinguishers.

What is the meaning of fire extinguishing?

to put out (a fire, light, etc.); put out the flame of (something burning or lighted): to extinguish a candle. to put an end to or bring to an end; wipe out of existence; annihilate: to extinguish hope. to obscure or eclipse, as by superior brilliance.

Why are fire extinguishers important?

Fire extinguishers are extremely important as they are the most commonly used for of fire protection. In many cases they are a first line of defense and often contain or extinguish a fire, preventing costly damage.

Which type of extinguishing agent is used to extinguish a Class B fire quizlet?

Halon 1301 and Halon 1211 are most commonly used as extinguishing agents for Class B and Class C fires.

What is the important characteristics of the extinguishing agent in fighting a Class C fire?

The extinguishing agent in a Class C fire extinguisher must be electrically nonconductive. Both carbon dioxide and dry chemicals can be used for electrical fires. An advantage of carbon dioxide is that it leaves no residue after the fire is extinguished.

Which is the most common and effective solution for extinguishing fire?

Water is the most common agent, but others such as dry chemical, halon, halogenated agents and foam can be used effectively.

Where is a fire extinguisher located in a lab?

Typically by the lab exit door and are the ABC variety (for flammable liquids/paper & wood/electrical, but not for flammable metals).

What extinguishing agents are used in a fire extinguisher?

What Extinguishing Agents are used in a Fire Extinguisher? Dry Chemical. This agent is made up of very small particles of sodium bicarbonate, potassium bicarbonate, or ammonium phosphate with additives to help enhance flow and prevent packing and caking. Wet Chemical. Clean Agent. Dry Powder.

What is a Class B fire extinguisher used for?

A Class B fire extinguisher is used for flammable liquid and gas fires such as oil, gasoline, etc. These fire extinguishers deprive the fire of oxygen and interrupt the fire chain by inhibiting the release of combustible vapors. Extinguishers that are suitable for Class B fires should be identified by a square containing the letter “B.”.

How does a clean agent fire suppression system work?

Clean agents fire suppression system are designed specifically to protect sensitive electronic equipment. They stop fires fast using a combination of chemical and physical mechanisms. Clean agent systems typically discharges gas directly onto the surface of combustible materials.

What chemicals are used in a fire extinguisher?

The most commonly used chemical in the fire extinguisher is Sodium Bicarbonate. Upon heating,it gives carbon dioxide.This forms as a blanket and cuts the supply of oxygen thus reducing fire.