An explosive increase in the volume of fire when oxygen is suddenly allowed to enter an enclosed space where the contents have been smoldering for a period of time. Because the enclosed fire consumes the available oxygen, the air pressure inside may be lower than outside. Sometimes an incipient backdraft can be detected by observing the smoke being sucked back into the fire building, with brief puffs of smoke being forced back out periodically. A backdraft is a smoke explosion and should not be confused with a condition known as flashover, where all of the contents of a room simultaneously burst into flames because of the intense heat in the room.
Also known as a smoke explosion. A backdraft may be created when a fire burning inside an enclosed structure depletes most of the oxygen but the gases inside remain super heated. A sudden introduction of oxygen into the environmnet, such as opening a door or window, can cause the gases to ignite with explosive force. Warning signs of possible backdraft include little or no visible flame, black smoke becoming dense gray yellow, smoke stained windows, and smoke escaping in intervals, or a puffing effect.
Instantaneous explosion or rapid burning of superheated gases that occurs when oxygen is introduced into an oxygen-depleted confined space. It may occur because of inadequate or improper ventilation procedures.
An explosion of a hot, smoldering fire caused by a sudden inrush of oxygen into the previously smoldering fire.
An explosion resulting from the sudden introduction of air (oxygen) into a confined space containing oxygen deficient superheated products of incomplete combustion.
inside buildings, when the oxygen in a room is almost used up, the fire begins to die down from lack of the substance; the flames lower and the room fills with smoke; but if you open the door to the room at that time, the fire sucks oxygen in so hard that fire gases explode
A backdraft occurs when an oxygen-starved fire suddenly receives oxygen. The sudden rush of oxygen causes all of the super-heated gases to ignite at the same time, which causes an explosion. While the risk of such an occurance is low, a backdraft is almost always fatal to anyone caught in it.
An explosion or rapid burning of heated gases in a confined structure. A backdraft may occur because of improper ventilation procedures. The degree of force of the backdraft will be dependent upon such variables as the size of the confined area, the extent to which smoldering has taken place (thus providing fuel), the degree of heating of the atmosphere, and the rate at which air or oxygen is introduced
A "smoke explosion" caused when heat and heavy smoke accumulate inside a compartment, depleting the available air, and then oxygen/air is introduced, completing the fire triangle.
A backdraft is a situation which can occur when a fire is starved of oxygen; consequently combustion ceases but the fuel gases and smoke remain at high temperature. If oxygen is re-introduced to the fire, eg. by opening a door to a closed room, combustion can restart often resulting in an explosive effect as the gases heat and expand. This effect is the basis for the synonym .
The Backdraft is a cocktail that is noted for its elaborate preparation and extreme potency. Named after the Backdraft which occurs in some fire situations, this drink produces a similar condition on purpose using flammable alcoholic drinks and an enclosing container, such as an upside down pint glass. The potency of the Backdraft drink is in the types of liquors used, and in the order they are consumed.