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3 answers

call your fire department
.

2006-10-20 00:55:15 · answer #1 · answered by duc602 7 · 0 0

A fire extinguisher is an active fire protection device to extinguish or control a fire, often in emergency situations. Typically a fire extinguisher consists of a pressure vessel containing an agent that when discharged, can extinguish a fire.

Usage
When faced with a fire emergency, you must first decide whether you have a chance of putting it out, or if you must flee to safety. Calling for additional help may be a higher priority than trying to put it out yourself.

You may be able to put the fire out with water, or by smothering it (reducing oxygen flow to the fire) for example with a blanket or rug.

In order to use a packaged commercial fire extinguisher, you must first make sure it is suitable to the type of fire. If it is not a suitable type, it may not be effective or it may cause additional dangers. For example, water on a kitchen oil fire might splash the flaming oil over a wide area. Water on an active electrical fire might create a shock danger.

If the fire extinguisher is suitable, the typical steps to use it are:

(P) Pull the safety pin
(A) Aim the nozzle at the base of the fire, from a safe distance, about six feet
(S) Squeeze the handle
(S) Sweep the extinguisher from side to side while aiming at the base of the fire
Since the fire might try to start up again, make SURE it stays out!


History
The first version of the modern fire extinguisher was invented in the United Kingdom by Captain George William Manby in 1819, consisting of a copper vessel of 3 gallons (13.6 litres) of pearl ash (potassium carbonate) solution under compressed air pressure.

The late 19th century saw the invention of the soda-acid extinguisher, where a cylinder contained 1 or 2 gallons of water that had sodium bicarbonate mixed in it. Suspended in the cylinder was a vial containing concentrated sulphuric acid. The vial of acid was broken by one of two means depending on the type of extinguisher. One means involved the use of a plunger that broke the acid vial, while the second involved the release of a lead bung that held the vial closed. Once the acid was mixed with the bicarbonate solution, carbon dioxide gas would be expelled and this would in turn pressurize the water. The pressurized water was forced from the canister through a nozzle or short length of hose.

Around 1912 Pyrene pioneered the carbon tetrachloride or CTC extinguisher, where the liquid was expelled from a brass or chrome container by handpump, usually of 1 imperial quart (1.1 L) or 1 imperial pint (0.6 L) capacity but also made in up to 2 imperial gallon (9 L) size, onto a fire. The CTC vapourised and extinguished the flames by chemical reaction. This extinguisher was suitable for liquid and electrical fires and was popular in motor vehicles for the next 60 years. The vapour and combustion by-products were highly toxic and deaths did occur from using these extinguishers in confined spaces

everthing about em is listed in the source site
hope i helped:)

2006-10-13 05:08:54 · answer #2 · answered by ☺♥? 6 · 1 1

just hit your local H.S.

2006-10-13 05:15:14 · answer #3 · answered by Anonymous · 0 1

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