C candle A standing tree with a broken top which often continues to burn after the main firefront has passed. bushfire The local name for a wildfire that occurs in the forests, scrubs, woodlands or grasslands of Australia or New Zealand. burning period The part of each 24-hour period when fires spread most rapidly, typically from 10:00 AM to sundown. burn out Setting fire inside a control line to consume fuel between the edge of the fire and the control line. burning index A relative measure of fire-control difficulty doubling the index means twice the effort may be needed to control the fire. Then the call to bump up is heard, and everyone ahead of the caller skips ahead one or more positions, leaving the unfinished fireline for those coming up behind. In the "bump" system of fireline construction, each firefighter works on a small piece of fireline with their tool until a completed portion of line is encountered. Bump back means to return to a previous location. Can be used in many contexts, from moving to another location on a single fireline to an entire crew moving to another fire. A small fire truck outfitted for wildland firefighting. brush truckĪlso called a type-six engine. brush hook A type of cutting tool used to clear brush, usually with a heavy, solid, curved blade that is longer than a machete bolted to the end of an arm's-length handle. brush blade A rake attachment used for cutting or ripping brush and roots out of a fireline. Booster pump also refers to a pump in a relay series for pumping uphill beyond the lift of the previous pump. booster hose, booster reel, booster pump A small solid hose on a reel connected to a small pump fitted to a water tank on a vehicle. bone yard An area scraped to mineral soil for the safe handling of smoldering materials also, a systematic mop-up of smoldering materials by scraping off embers and placing materials into the bone yard area. Boise Interagency Fire Center (BIFC) The former name for the National Interagency Fire Center. Often accompanied by violent convection and may have other characteristics of a firestorm. blowup A sudden increase in fireline intensity or the rate of spread of a fire sufficient to preclude direct control or to upset existing suppression plans. blackline A condition in which no combustible fuels remain between the fireline and the main fire. berm Soil heaped on the downhill side of a traversing fireline below a fire in order to trap rolling firebrands. A base camp location used by firefighters for eating, sleeping, etc., typically near the staging or command center. A staging or command center for fire operations. Typically an area or strip devoid of combustible fuel. barrier Any obstruction to the spread of fire. Bambi bucket A collapsible bucket used for lifting and moving water or fire retardant with a helicopter. backfire A fire set along the inner edge of a fireline to consume the fuel in the path of a wildfire and to change the direction or force of the fire’s convection column. B backburn A precautionary fire set downwind of the main fire for controlled fuel clearing by "backing" it into the main fire, similar to a burnout, which occurs adjacent to the control line. The anchor point is used to minimize the chance of being flanked (or outflanked) by the fire while the line is being constructed. anchor point An advantageous location, usually a barrier to fire spread, from which to start constructing a fireline. Formerly referred to as borate bombers before borate-based retardants became less desirable. airtanker A fixed-wing aircraft certified by the FAA as being capable of transporting and delivering 600 to 3,000 gallons of water or other liquid or powder fire retardants. air tactical group supervisor A person who coordinates air resources for attack of a fire with aerial firefighting. air operations A group tasked with coordinating aerial-based observation, supply, rescue and suppression at the scene of a wildfire. Supplies can be dropped by parachute, while retardant is generally released in a single drop of one or more trails, the size of which is determined by the wind and the volume, speed and altitude of the airtanker (usually no less than 200 feet above the drop zone). ![]() air drop The delivery of supplies or fire retardant from the air. The use of aircraft in support of ground resources to combat wildfires, often most effective in initial attack in light fuels. ![]() aerial firefightingĪlso referred to as air attack. 0–9 1 hr, 10 hr, 100 hr, 1000 hr fuels Refers to the time-lag classes of dead fuels as classified by size: 1 hr = 0 to 0.25-inch diameter, 10 hr = 0.25- to 1-inch diameter, 100 hr = 1- to 3-inch diameter, 1000 hr = 3- to 8-inch diameter A aerial canopy A fuel type consisting of trees having few low branches, which makes them less susceptible to ignition by low-intensity fires.
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