Fire Extinguishers

the type that spray foam

Must be Coast Guard approved

Yes, a fire extinguisher works on a grease fire. What you have to avoid with grease fires is throwing water on them, because the burning grease will just float on the water and will be splashed around as the water heats and vaporizes, spreading the fire, rather than being put out. But the carbon dioxide based fire extinguisher doesn't have that problem.

Mostly because it's pointless. The bottle can only be filled up with specialized equipment, and they have a gauge to tell them how much is in it. Once the extinguisher is used, it has to be returned anyway to be refilled regardless how much CO2 you may have used. If you happen to be using it when it runs out, well, the fire is out of control already.

throwing a blanket over a small contained fire stops oxygen to the fire .to stop a fire you need to take out one of the three elements that are needed for a fire to burn witch are heat /oxygen/fuel

Someone initially said: 1500ft.

State and local fire codes may have different criteria based upon the type of occupancy and the level of hazard.

For example, in an ordinary Class A hazard (paper, plastic, wood, cloth), you may need a Class 2-A or 4-A fire extinguisher within 75 feet of travel distance from any interior location, or one for every 11,250 square feet. For Class B hazards, a 5-B may be required within 30 feet for low hazards and a 50-B may be required within 50 feet of a high hazard, among many other possible combinations.

NFPA 1 (2009) Fire Code: 13.6.8.2, 13.6.8.3.

US Coast Guard regulations prescribe the minimum number and size of fire extinguishers, if any, required aboard various vessels.

In a commercial kitchen, a Class K extinguisher may be required within 30 feet.

NFPA 1 (2009): 13.6.8.6

Your local codes may vary.

It can cool lava somewhat, but so does air or anything else that is at a lower temperature than the lava. It would not cool lava enough to make noticeable difference.

The owner of a commercial occupancy is required to inspect fire extinguishers monthly and to keep written records. These duties may be delegated to the Facility Manager, but the owner remains responsible.

During any annual inspection by the local fire inspectors, the inspector may examine a few extinguishers, but will be primarily interested in seeing the records of the monthly inspections and notations of when each extinguisher is due for maintenance, testing or replacement.

Two

Evidence for the use of fire by Homo erectus by about 400,000 years ago has wide scholarly support. Claims for the earliest definitive evidence of control of fire by a member of Homo range from 0.2 to 1.7 million years ago (mya).

Since petroleum is a flammable liquid, a Class B fire extinguisher would be used.

The B determines the type of fire that can be extinguished, and in this case it would be flammable liquids such as gasoline, grease, oil, diesel fuel, and kerosene.

The number indicates the approximate number of square feet the unit can extinguish, so a B-1 would be a relatively small extinguisher.

A class "ABC" fire extinguisher. about $20 at any hardware store.

Class K fire extinguishers are potassium based, which react chemically with the cooking oil to produce froth. The froth rises from the bottom to the surface, and smothers the fire.

B on fire extinguishers generally means that it can be used to put out flammable liquid fires. B1 means it will do so, but not especially well (1 is the lowest ranking).

A is for flammable solids, C is for electrical fires.

Usually the number appears before the letter, so 1-B rather than B1. Properly used, a 1-B extinguisher can be reasonably expected to put out a puddle of flaming liquid about 2.5 square feet in area. If you've never had specific training in using one, you probably WILL NOT use it properly; for flammable liquid fires, unless it's an extremely small fire it's almost always better to call 911 than to try to use a fire extinguisher on it (you're more likely to spread it than extinguish it).

No. Some use a light yellow powder, but that is usually tri-ammonium phosphate, not sulfur

"foam" fire extinguishers are made for hydrocarbon fires...i.e: gasoline, diesel, etc. These fires are considered class "b" (flammable liquids), 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.

15secs.

Anything other than water can be used on an electrical fire. These are often indicated on fire extinguishers as Class ABC or BC or even just C, where class C refers to fires caused by energized electrical conductors.

Water removes heat by converting into steam and may reduce the heat below the ignition temperature of the fuel. It may also INCREASE the ignition temperature of the fuel itself by soaking in. Thus, the fuel cannot continue to burn until all the water has been converted to steam, which requires more heat.

in a readily accessible location

============================

EXACTLY, if you see a fire, you need to be able to get at the extinguisher easily so it must be in an open area and not covered up or in a cupboard or storage unit. You could also consider where fires are likely to happen - near a cooker, by the engines etc. It is also a good idea to have one near a door so you can pick one up as you enter or leave a cabin.

Most often, simple fire extinguishers use sodium carbonate and dilute sulfuric acid to produce carbon dioxide, that extinguishes fire. small pouch carries the acid within a matrix of sodium carbonate. The pouch prevents the acid to come in contact with sodium carbonate outside. When the bottle is shaken, the two chemicals come in contact with each other, liberating carbon dioxide and water droplets that extinguishers.

Another type of fire extinguisher contains compressed Carbon Tetrachloride in it. When the nozzle is pushed, an aerosol of carbon tetrachloride is liberated that suppresses and extinguishes fire. This type has a major advantage that it can extinguish fires of oils, electric circuits, etc.

Other forms of fire extinguishers use forced water to extinguish fire.

Any class "A" fire. A class "A" fire is anything that when burned leaves an Ash.