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3D zone control: The strategy of 3D zone control intended to improve the safety of firefighters operating inside a burning structure.It attempts to safeguard the immediate locality of any space occupied by firefighters in resorting to various defensive actions that (a) confine the fire; (b) remove combustion products safely and effectively; or (c) mitigate dangers in the hot-gas layers.
A relative measure of fire-control difficulty; doubling the index means twice the effort may be needed to control the fire. burn out Setting fire inside a control line to consume fuel between the edge of the fire and the control line. burning period The part of each 24-hour period when fires spread most rapidly, typically from 10:00 AM to sundown.
A short piece of fire hose, usually 10 to 20 feet (6.1 m) long, of large diameter, greater than 2.5 inches (64 mm) and as large as 6 inches (150 mm), used to move water from a fire hydrant to the fire engine, when the fire apparatus is parked close to the hydrant. Solid stream A fire-fighting water stream emitted from a smooth-bore nozzle.
A fire whirl, fire devil or fire tornado is a whirlwind induced by a fire and often (at least partially) composed of flame or ash. These start with a whirl of wind , often made visible by smoke , and may occur when intense rising heat and turbulent wind conditions combine to form whirling eddies of air.
Although this evidence shows that fire may have been used in a controlled fashion about 1 million years ago, [20] [21] other sources put the date of regular use at 400,000 years ago. [22] Evidence becomes widespread around 50 to 100 thousand years ago, suggesting regular use from this time; resistance to air pollution started to evolve in human ...
Controlled burns have a long history in wildland management. Fire has been used by humans to clear land since the Neolithic period. [48] Fire history studies have documented regular wildland fires ignited by indigenous peoples in North America and Australia [49] [50] prior to the establishment of colonial law and fire suppression. Native ...
The Fire front is where the unburned materials meet the flames. This is the most intense part of a wildfire as it spreads outward. Many factors come into play when determining how quickly the fire ...
See also References A amadou Main article: amadou A spongy, flammable substance prepared from bracket fungi. arson Main article: arson The crime of intentionally or maliciously lighting structures, wildland areas, cars or other property on fire. It is the deliberate setting of fires for personal, monetary or political gain. auto reignition Main article: Auto reignition A process used in gas ...