Fire Extinguishers

Check gauge, seal, nozzle, and rock to check weight and free up agent.

Yes

In a carbon dioxide extinguisher, the carbon dioxide is kept in pressurized liquid form in the cylinder. When the container is opened, the carbon dioxide expands to form a gas in the atmosphere. Carbon dioxide gas is heavier than oxygen, so it creates a blanket around the burning fuel and displaces the oxygen surrounding the fuel.

Or to simplify, it removes oxygen from the fire triangle, to smother it and extinguish it.

You also can take out one of the elements by using a wet sack or just a plain blanket

one ha swater one has foam stuff

The most common type of portable foam extinguishers contains fluorosurfactants.

There are other which also contains proteins or compressed air.

Yes pure baking soda is used as it behaves as a basic medium which reacts with CO2 gas n then d reacted product is sprayed on d fire which extinguishes d fire ....because of it neutral behavior....

A soda water extinguisher can be used on a fire of paper. Or use a carbon dioxide extinguisher if you don't want water damage, or if there is anything electrical that can cause a shock. Use foam on oils and flammable liquids.

The average life span of a working fire extinguisher is anywhere between five and fifteen years. Check the needle indicator - if it's in the green section, the fire extinguisher will still work. Older models without gauges need to be checked by professional fire-extinguisher-replacement specialists.

where they are readily avalible

PASS

Pull pin

Aim nozzle

Squeeze trigger

Sweep stream across base of fire

Class K extinguishers are designed to fight cooking fat, oil, and grease fires, such as deep fryers. The chemicals inside these extinguishers react with the grease to form a foamy layer that will not burn.

Depends on the exact type of extinguisher. For most, remember PASS. Pull safety pin, Aim at bottom of fire, Squeeze handles together hard, and Sweep the fire out with the stream from the extinguisher.

First you need to look at the fire triangle. In the fire triangle (consisting of heat, fuel, air) the firefighter removes one of the sides of the triangle, thus extinguishing the fire. There is also the fire tetrahedron which has the addition of a chemical chain reaction. The most common way to put out a fire is with water. This cools the fire and then also helps to remove the air with the expansion of the water into steam. Some departments use a wetting agent, or foam, added to the water. This helps to remove the fuel and air from the equation. Lastly, depending on the fire, a chemical is used that helps to disrupt the amount of air the fire has to burn and smothers it. This could be a dry chemical from and extinguisher or even a gas from a CO2 extinguisher.

It depends on the quantity. If you have a great load, yes. If you have a little, no. Some Class D "dry powder" extinguishers use salt (NaCl) as one component.

USCG regulations do not require any B-II extinguishers on pleasure vessels up to 65 feet or 1,000 bhp, unless it is a passenger-carrying motor vessel.

However, where two or more B-I extinguishers are required, a B-II may be substituted for two B-Is, although it is a very bad idea to increase the risk that one extinguisher may malfunction and you would not have any backup.

Canadian regulations are somewhat different and require at least one B-II for any motor vessel over 8 meters or any other vessel that large, if there is a gas or liquid-fueled heating or cooking system aboard.

Fire safety - check with a Fire Authority.

Also, the types of extinguishers and their chemicals vary from country to country, maybe even state to state.

Are you talking about general flammables, or flammables in the presence of electricity, for example?

Big differerence: the wrong extinguisher may kill you.

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If you mean "portable fire extinguisher" they cannot be more than 40 pounds and the average is closer to 10 or less.

It depends upon the type of chemical that is burning, but frequently it is safe to use a dry-chemical powder (DCP), or an ABC type of extinguisher.

However, boiling grease fires may need a Class K extinguisher and flammable metals (aluminum, magnesium, lithium, etc) may need a Class D extinguisher.

type B

There are a few different types of dry powder. The most common one, suitable for class A, B, C and electrical fires ((A=Solids, B=Liquids, C=Flammable Gases) and found in most household units, contains monammonium phosphate. This decomposes in a flame and produces free radicals (unpaired electrons) which interrupt the combustion process. Additionally, the chemical melts and forms an insulating "skin" on burning solids, smothering the flames. (Note - the fire clases above are for UK regulations; in North America the fire classification is: A=ordinary combustibles, B=flammable and combustible liquids and gases, C=energized electrical equipment/appliances).

Units using sodium bicarbonate are not used on class A fires, but are particularly effective on liqud (class B) fires. Potassium carbonate (purple K) is sometimes used as an alternative.

For motor racing, where rapid fire knockdown is needed, Monnex (combining a bicarbonate powder with urea) is used; this has superb quenching power for liquid fuel fires.

Finally, there are specialsit powders available for dealing with burning metals, which react with all other extinguishing agents and powders. These contain powdered sodium chloride, powdered graphite or powdered copper metal.

While there are "disposable" extinguishers of the use once and throw away variety most are refillable and if maintained can be used repeatedly for up to 30 years or more. This can result in a cost savings over time.