Click a letter to view all entries that begin with that letter.
Water (possibly mixed with foam) emitted at nozzle and directed at burning materials.
The fire tetrahedron is based on the components of igniting or extinguishing a fire. Each component represents a property necessary to sustain fire: fuel, oxygen, heat, and chemical chain reaction. Extinguishment is based upon removing or hindering any one of these properties.
Model for understanding the major components necessary for fire: heat, fuel and oxygen.
Building structure designed to delay horizontal spread of a fire from one area of a building to another; often regulated by fire code and required to have self-closing doors, and fireproof construction.
Fixed or mobile patrols that watch for signs of fire or fire hazards so that any necessary alarm can be quickly raised or preventive steps taken.
Weather conditions that affect fire vulnerability, fire behavior and suppression.
Materials designed or treated to have an increased fire point.
A natural or constructed barrier used to stop or check fires that may occur, or to provide a control line from which to work.
People who respond to fire alarms and other emergencies for fire suppression, rescue, and related duties.
Firefighter Assist and Search Team
The operational area at the scene of a fire; area in which incident commander is in control. Also used as name of radio frequency to be used by units operating in the fireground, as in Responding units switch to fireground.
See also hose, below.
Another term for Fire station. Where fire apparatus is stored and where full-time firefighters work.
The part of a control line that is scraped or dug to mineral soil. Also called fire trail. More generally, working a fire is called being on the fireline." May also refer to a "wet line" where water has been used to create a burn boundary in light fuels such as grass.
A small red booklet carried by U.S. firefighters on the firelines, as a quick reference on various firefighting topics.
Set of tools used for opening elevator doors from the lobby during rescues; come in many different shapes and sizes, each designed for a specific elevator type.
A conflagration of great enough proportions to noticeably create its own wind conditions.
Extreme fire behavior indicated by widespread in-drafts and a tall column of smoke and flame, where added air increases fire intensity, creating runaway fire growth.
Periodic test of how well the facepiece of an SCBA fits a particular firefighter.
Flammable range, limits
The percentage mixture of fumes with air that will sustain fire; outside the limits the mixture is either too lean or too rich to burn.
Flanks of a fire
The parts of a fire's spread perimeter that are roughly parallel to the main direction of spread.
Any sudden acceleration in rate of spread or intensification of the fire. Unlike blowup, a flare-up is of relatively short duration and does not radically change existing control plans.
Fuels such as grass, leaves, draped pine needles, fern, tree moss and some kinds of slash, which ignite readily and are consumed rapidly when dry.
Lowest temperature at which a material will emit vapor combustible in air mixture. Lower than fire point of same material.
Simultaneous ignition of combustible materials in a closed space, as when materials simultaneously reach their fire point; may also result in rollover.
The moving portions of an extension ladder.
The aerated solution created by forcing air into, or entraining air in water containing a foam concentrate by means of suitably designed equipment or by cascading it through the air at a high velocity. Foam reduces combustion by cooling, moistening and excluding oxygen.
A nozzle that discharges water in small droplets. Oftentimes, the nozzles are adjustable, permitting the pattern to range from a straight stream to a narrow fog to a wide fog stream. Can also be designed to automatically adjust pressure depending upon selected pattern.
A fire stream characterized by small droplets of water. The droplets are unable to travel very far, but absorb heat very quickly because of the high surface area they present.
Backflow preventer at inlet of suction hose used in drafting; helps avoid losing prime by keeping water from running back out of the suction hose.