Fire Extinguishers

Because if there is a fire you have to be able to get out as fast as possible and if there are things in your way you could die.

B extinguishers are for putting out flammable liquids. These must be carried on boats.

I am pretty sure you would use a class K. This is designed for kitchen fires with combustable cooking materials included.

Portable fire extinguishers under 40 pounds should be mounted so that the top is no more than 5 feet from the floor; those over 40 pounds, within 3 1/2 feet. The bottom must be at least 4 inches from the floor, unless the extinguisher is on wheels. NFPA 1.

Yes, carbon dioxide (CO2) can be used by a firefighter (or a trained individual on scene) to extinguish an electrical fire. The carbon dioxide fire extinguisher is a specific type of fire extinguisher, and is in fairly common use. Compressed CO2 is pumped into the cylinder, and held in there behind a hand-operated valve. Pull he pin, grab the handle with one hand and the handle of the nozzle with the other, and get busy. Use the PASS system: pull the pin, aim the nozzle at the base of the flames, squeeze the handle, sweep the nozzle from side to side. The CO2 extinguisher can be distinguished by the large "cone" of its nozzle. Be sure to grab the nozzle by the handle as it is insulated. The CO2 exits the bottle and is really cold when it does. It will freeze your hand if you grab the nozzle or the hose instead of the handle. The extinguisher will make a fairly loud noise when you discharge it, but expect that and then ignore it. You're the first responder, and you can effectively use this device, just like a firefighter would.

water?

Base of the flames.

applying to the academy and Being in another public service

A dry chemical fire extinguisher is a fire extinguisher that disburses a dry chemical agent to actively suppress a fire. The agent will smother the fire (cut off oxygen) and halt the chemistry (free radical production) of a small blaze. Compressed nitrogen is the most common propellant for the powder. The powder used in the device can be any one of several different chemicals, and the ones we commonly see include ammonium phosphate, sodium bicarbonate, and potassium bicarbonate, or a combination of them and another ingredient. The type of chemical will determine its rating (class A, B and/or C fires), and the chemical properties of the agent will determine its effectiveness on a given fire type and what can be expected in cleaning up after the fire. A link is included below so you can check facts and gather additional information.

Because then it will be empty when you DO need it.

Fire extinguishers come in a wide range of types and sizes. A small ABC-type can be had for under $20. An ordinary pressurized-water type can be obtained for about $100. A Halon system for a computer center might be closer to $50,000 and could cost thousands of dollars to replenish each time it gets used, which is still less than the cost of repairing fire and water damage that could result from other alternatives.

carbon dioxide is significantly denser than air and tends to settle on the ground displacing oxygen and putting out the fire. Nitrogen makes up 78% of the atmosphere so 100% nitrogen isn't very different in density than air.

An "ABC" extinguisher will put out a gasoline fire but I recommend an extinguisher that uses Halon. Halon will not corrode an engines internals like the ABC type will. Halon deprives the fire of oxygen to extinguish the fire. A lot of race car drivers use the same type systems on their cars in case of fires. Addendum: Halon has been out of production since the early 1990's and availability is very limited. There are various other "clean" agents on the market that have been developed as halon replacements, but they can be quite expensive. An alternative to these expensive products, although a powder and quite messy, is regular "BC" chemical. Unlike the "ABC" product "BC" does not melt a stick to metal, instead it simply smothers the fire and is easier to clean off than ABC - although it too is corrosive.

Actually it was a type of fire standpipe and sprinkler in which water pressure from a reservoir and pump pushes water up pipes and into a building to a valve that can be opened to make the water spray out of nozzles.

US Patent 125,063, issued March 26, 1872 to Thomas J. Martin [sic], of Dowagiac, Cass County, Michigan.

There were no US patents at ALL issued on October 26, 1872. They were only issued on Tuesdays and the 26th was a Saturday.

A tight-fitting lid, a fire blanket, a box of sodium bicarbonate or salt may work, but a type ABC fire extinguisher would be best. Turn off the electric source as well.

Under NO circumstances use a water-type (often class A) on a hot oil fire or on an energized electrical device.

Class C fires involve energized electrical equipment, such as appliances, wiring, and power tools. These fires pose unique hazards because using water or foam extinguishers can conduct electricity, increasing the risk of shock. Instead, Class C fires should be extinguished with non-conductive agents like dry chemical or carbon dioxide extinguishers. Once the electrical source is de-energized, the fire can then be classified as a different type (like Class A or B) if it continues to burn.

class D fire extinguishers may be used on all fires?

As a general rule, no. Leave that to the firefighters. If you are in a house that is on fire, try get out as fast as possible and leave your belonging behind!

That depends on what the fire is burning. You need to be more specific in order to get a viable answer.

Eight to thirteen seconds

They can use one of three gases. In a foam extinguisher, it's usually compressed air which is very cheap--the price is just the electricity required to make it--and works well. They can also use carbon dioxide or nitrogen.

The fire isn't put out properly, although incorrect use of a fire blanket would be quite challenging as one only has to cover a pan fire or wrap someone in one.