Fire Extinguishers

Foam fire extinguishers are used mainly for flammable liquid fires and are mostly used by professionals and in commercial and industrial settings. These extinguishers are charged with anther AFFF, FFFP, or AR-AFFF, however, these class of extinguishers are only rated class A & B fires and are hazardous to the environment, humans and animals in addition to being very corrosive.

the fire alarm should go off. you should have a fire exit in most classes . Lead the reguout to the playground or a large space where everyone can gather, take the register for each class wait for the brigade if its a real fire, make sure children walk not run

To answer your question, no. Gasoline vapors (from automotive gasoline), propane gas, or natural gas will not set off smoke detectors. There are special detection devices available to detect the above mentioned. The most common detectors found in homes are smoke and CO(carbon monoxide). All homes; that use propane, natural gas, wood, coal, or have an attached garage should have both of these detectors. One does not take the lace of the other one. Being in the Fire Service over 30 years, the simple battery operated ones seem to work as well as any. To answer your question, no. Gasoline vapors (from automotive gasoline), propane gas, or natural gas will not set off smoke detectors. There are special detection devices available to detect the above mentioned. The most common detectors found in homes are smoke and CO(carbon monoxide). All homes; that use propane, natural gas, wood, coal, or have an attached garage should have both of these detectors. One does not take the lace of the other one. Being in the Fire Service over 30 years, the simple battery operated ones seem to work as well as any.

Oxygen - The fire triangle, consisting of heat, fuel and oxygen requires a combination of the three for continued pyrolysis. The fire tetrahedron is now being taught, adding a continued chemical reaction as research has shown that the combination of heat, fuel and oxygen actually facilitates a sustained chemical rection between these factors that promotes pyrolysis. CO2 displacec oxygen and thus removes that leg of the fire triangle or tetrahedron making it impossible ofr continued combustion. Oxygen - The fire triangle, consisting of heat, fuel and oxygen requires a combination of the three for continued pyrolysis. The fire tetrahedron is now being taught, adding a continued chemical reaction as research has shown that the combination of heat, fuel and oxygen actually facilitates a sustained chemical rection between these factors that promotes pyrolysis. CO2 displacec oxygen and thus removes that leg of the fire triangle or tetrahedron making it impossible ofr continued combustion.

It can be safely used on electrical fires, it will extinguish burning liquids, and it leaves no residue behind.

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.