Fire Extinguishers

A soda-acid extinguisher expells water (actually a dilute sodium sulfate solution formed by the reaction of the soda and the acid). Therefore, it's used on the same types of fires as normal water extinguishers; wood, paper, textiles and so on. It must NOT be used on burning liquids (which would be splashed around, sperading the fire) or on live electrical equipment (becuse of the risk of electrocution).

The cost of servicing a fire extinguisher depends on the type and size of the extinguisher, and on where in the world you are located.

liquids

leaking fuel lines.

Fire extinguishers are marked by colour and signage. It is important that any extinguisher is used correctly. For instance, an extinguisher containing water will be red, and have a warning not to use it on an oil or electrical fire. Carbon Dioxide will be black, Foam will be yellow, or in some countries, red with a yellow horizontal band, Dry powder is blue. Any health and safety website will provide examples of the colours used, and also instructions on their use, and on what type of fire they must not be used on.

The fire triangle is fuel (something that will burn), oxygen and heat. If you take away any of the three the fire will go out. Water reduces the temperature and causes the fire to die out. A note here: Water is used on class "A" fires only. A class "A" fire is anything that will leave an ash when burned such as paper, wood or cloth. If you were to try to use water on a class "B" fire (a liquid fuel fire) the water will cause the liquid to spread out rather than cool it and make the fire worse. A class"C" fire is anything electrical and while water may put the fire out you run the risk of electrocution if you use water. There is also a class "D" type of fire that includes metals such as magnesium that will burn. If you put water on burning magnesium such as an airplane wheel the magnesium may explode.

Well, that depends. If the electricity is still turned onthen we would use a CO2 extinguisher. If it is de-energized, then it would be treated as a normal fire, and you could put it out with a hose stream. In a perfect world though, CO2 is the best because it does no more damage to whatever is on fire, whereas water corrodes and shorts wiring.

We must know that electrical fires and fires fueled by burning liquids should not be fought with water. Some burning metals should not be fought with water, too.

There are two key elements of fire combustion and oxygen. If you deprive fire of either then it will extinguish. Another means of containing a fire is to create a fire break wide enough to prevent the flames from bridging the break. Thus water is used to extinguish the combustion of a forest fire as you cannot remove the oxygen. For something like an oil pan or rig fire the method is to starve the fire of oxygen by covering with a towel or using explosives to create a vacuum.

The act of smothering a fire is to prevent air (oxygen) from feeding the flames.

Must be maintained in a fully charged usable condition.

No, fire works donot harm ozone layer.The substances that are causing ozone layer depletion are freons, CFC's etc..

These are called as ozone-depleting substances (ODS).

Fire is produced by using a spark and a flammable material. The spark must come in contact with the flammable material and this will start fire. The flammable material will determine how quick the fire starts.

It depends upon what type of extinguisher it is.

Many refillable types must be internally inspected on one-year intervals. Others only after 3, 5 or 6 years.

NFPA 1 13.6.9 prescribes timetables for inspection, maintenance and recharging of portable fire extinguishers, for reference, although it is not universally adopted.

A fire extinguisher.

No, it is not. In fact, modern electronic monitoring systems for portable fire extinguishers have sensors to detect objects placed too close to the extinguisher location.

Some ancient atomists considered fire the original substance. They came to the conclusion that fire could change into all other elements and substances while coming through the universe from the top to bottom.

Doubtful. Straw burns really hot and fast; maybe one of the fire extinguishers they use at airports would, but Mrs. O'Leary wouldn't have had one.

The numbers are the extiguishing capacity, the letters the types of fire it will extinguish.