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Why do the worst fires occur at oil refineries?
It may be an unsupportable assumption that the worst fires occur at oil refineries. Oil refinery fires are usually extinguished quickly and are usually well contained. It all depends how you define 'worst'. The most difficult to stop fires tend to be fires in forested lands. The most expensive fires tend to be large commercial buildings. Fires with the highest human death rates tend to be in dense informal urban settlements - so called slums. The most polluting fires tend to be associated with gas flares and well fires in oilfields.
Is it always water that you use to put a fire out?
No - you wouldn't want to put out an oil fire out with water, it would spread. There are also checmicals that are used to deprive the fire of air. Powders (Like your household extinguisher) fires can also be smothered with blankets etc. Explosives are used to put out very large fires like oil well fires.
Why is it a bad idea to fight fires with water?
Fighting fires with water can sometimes be ineffective for certain types of fires, such as those involving flammable liquids or electrical equipment, as water can spread the fire or create electrical hazards. Additionally, using water on certain fires, like those involving grease or oil, can cause the fire to flare up and intensify. It's important to use the appropriate extinguishing agent for the type of fire to ensure effective suppression.
Is foam a good use for oil fires?
No, foam is not recommended for oil fires as it can actually spread the fire and cause it to flare up. Foam is better suited for extinguishing class A and B fires, such as wood or paper fires. For oil fires, it is best to use a fire extinguisher specifically designed for class K (kitchen) fires or a fire suppression system designed for commercial kitchens.
Can we spray water on fire?
Yes If You Want The Fire To Go Out.But NOT for oil or fat fires - any water entering a burning fat container will explosively boil and eject a large quantity of boiling, burning fat!There is a concept called The Fire Triangle. A fire must have Fuel, Air, and Heat. Removing any one of these will stop the fire.Water is commonly used to cool a fire, but as above is inappropriate where oil or fat is involved. There you'll remove the Air, by spraying with CO2 or carbonate powder.
What types of fires can't be put out with water?
Fires involving flammable liquids (Class B fires), such as gasoline or oil, should not be extinguished with water, as it can spread the flames. Electrical fires (Class C) are also dangerous to extinguish with water due to the risk of electrocution. Additionally, fires involving reactive metals like sodium or potassium (Class D fires) can react violently with water, making it ineffective and hazardous.
What caused motor fires in the Pontiac Fieros?
Poor oil control and overheating on the 2.5L caused the fires.
Why are fire produced by burning oil not extinguished by pouring water?
Pouring water on oil fires is ineffective because oil is less dense than water, causing the oil to float on top. When water is added, it may cause the oil to splatter, potentially spreading the fire further. Additionally, water can turn to steam upon contact with the hot oil, which can create explosive eruptions. Therefore, using a fire extinguisher specifically designed for flammable liquids, such as foam or dry chemical extinguishers, is the appropriate method for extinguishing oil fires.
5 classes of fires?
Yes there are now 5 classes of fire. A, B, C, D, and K... Class A- Ordinary combustibles- paper, plastic, wood, fabric, etc. Extinguished with water or foams. Class B- Flammable liquids- gasoline, oil, kerosene, jet A, etc. Extinguished with foams. Class C- Energized electrical equipment- these become Class A fires when the electrical source to the equipment is disconnected. Then the fire can be extinguished with water, foam, dry-chem, etc. If the equipment is expensive or critical to business operations though, they can be extinguished with carbon dioxide extinguishers. Class D- Flammable Metals- magnesium, aluminum, potassium, etc. Water used to extinguish these fires causes serious problems, akin to using water on a gasoline fire. Dry powders or other smothering agents should be used for extinguishment. Class K- Cooking oil fire- fryer oil, grease, lard, etc. Extinguishment usually provided by saponification systems mounted on overhead vents or near fryer units. Saponification uses a solution that basically turns the grease/oil into a soapy substance and smothers the fire. Different from foam, but similar.
Can you give an example of a sentence using word extinguish?
Nancy poured baking soda on the grease fire to extinguish the flame.
Can high presurre water mist system used for oil fires?
Yes, most systems have been specifically tested for exactly this sort of fire as they were originally developed to replace Halon systems in ships engine rooms. IMO913, IMO668/728 and IMO1165 are all watermist fire test protocols for testing on oil fires. FM 5560 also has its own fire tests for oil fires ( based around the IMO tests). the pass fail criteria is that the fire must be EXTINGUISHED, not suppressed or controlled- extinguished, the best result you can expect from fire fighting! Watermist works by fast evaporation of fine water droplets into steam, the water boils off very quickly and so cannot get near to the surface of the oil until the air temperature above the oil is below 100c. The fire will be extinguished at this point and the water droplets are too fine to get penetration into the oil - thus eliminating the explosion risk of water vapourisation with the oil. Fast flaming hydrocarbon fires give a perfect environment for watermist to work with as the enormous heat release allows the mist to turn into steam very rapidly. The Steam provides an oxygen free atmosphere at the flame tip so we fight two sides of the fire triangle - heat (energy) and oxygen!- you only need to fight one side to control a fire. htomlin@tycoint.com
Why oil based fire cannot be extinguished with water?
Simple, water cannot mix with oil and oil floats on water. So the water is sinking under the oil and not cutting off it's oxygen supply. Instead of water, use foam or dirt in a safe distance.
Why do the worst fires occur at oil refineries?
It may be an unsupportable assumption that the worst fires occur at oil refineries. Oil refinery fires are usually extinguished quickly and are usually well contained. It all depends how you define 'worst'. The most difficult to stop fires tend to be fires in forested lands. The most expensive fires tend to be large commercial buildings. Fires with the highest human death rates tend to be in dense informal urban settlements - so called slums. The most polluting fires tend to be associated with gas flares and well fires in oilfields.
Can an engine fire be put out with water?
Yes, an engine fire can sometimes be extinguished with water, especially if it involves flammable materials like rubber or plastic. However, using water on fires involving oil or electrical components can be dangerous, as it may spread the flames or cause electrical shock. It's generally safer to use a fire extinguisher rated for such fires, like a Class B extinguisher for flammable liquids or a Class C for electrical fires. Always prioritize personal safety and call emergency services if the fire is uncontrollable.
Why mustn't water be used to try to put out oil fires?
coz
What are the classes of fires?
Class A- ordinary combustibles, such as wood or paper- leaves an Ash Class B- liquids- such as oil, gasoline. Liquids Boil Class C- has a live electrical Current Class D- metals, such as magnesium. Metals can Dent Class K- a Kitchen fire, such as burning fat.
When did Kuwaiti oil fires happen?
Kuwaiti oil fires happened in 1991.
