The personnel and equipment collectively assigned to the suppression of a specific fire or group of fires. A fuel complex, defined by volume, type condition, arrangement, and location, that determines the degree of ease of ignition and of resistance to control. Standard 24-hour period beginning at 1000 hours, during which most wildfires undergo a predictable speeding up and slowing down of intensity, depending primarily on the influence of weather and fuel factors.
- Setting fire inside a control line to consume fuel located between the edge of the fire and the control line.
- A portion of the general fire weather forecast issued on a regular basis during the normal fire season specifically to fit the requirements of fire management needs; i.e., time, areas, and weather elements.
- Weather conditions which influence fire ignition, behavior, and suppression.
- A fuel complex defined by kind, arrangement, volume, condition, and location that presents a threat of ignition and resistance to control.
Indicates that the airtanker has the target in sight and will make a huge black bug retardant drop on this run over the target. An axle that supports a portion of the vehicle weight and transmits a driving force to the wheels. Smoke that has drifted from its point of origin and is no longer dominated by convective motion. May give false impression of a fire in the general area where the smoke has drifted. A hose-coupling device having two male thread nipples for connecting hose and for connecting two female couplings of the same diameter. In WIMS, the climatological breakpoints separating the highest staffing levels.
October 2021 Special Edition: Power & Energy Efficiency Handbook
These components help to minimize power losses in the whole ac-dc conversion block. Use of silicon MOSFETs, SiC MOSFETs, or IGBTs can all maximize the efficiency of the rectifier and PFC circuit. Silicon and SiC MOSFETs exhibit fast switching rates and enable higher frequency operation. Use of higher switching frequencies reduces inductor size which in turn improves efficiency. Of course, transistor temperature should be monitored to prevent excessively high junction temperatures. An active clamp flyback recirculates the energy instead of dissipating it, improving efficiency .
A system for, or the act of discovering, locating, and reporting fires from aircraft. In the ac-dc converter for the logic and control circuitry, use of Schottky diode rectifiers and high-power MOSFETs with high-speed switching minimize power loss and maximizing efficiency. The MOSFETs have a low RDS which reduces power consumption when the MOSFET is conducting. Because the dc charger is a high-power system, even small improvements in efficiency bring significant savings in power consumption. Use of Schottky rectifier diodes or diode modules reduces turn-on voltage requirements.
These fuels readily ignite and are rapidly consumed by fire when dry. Any of the processes that lead to upward vertical motion in the atmosphere. These processes may include low level convergence, heating or thermal convection, orographic lifting over the mountains, and frontal lifting. Disposing of cargo, fuel, water or retardant overboard to lighten an aircraft or to improve its stability.
Belt-mounted case with pockets fitted for anemometer, compass, sling psychrometer, slide rule, water bottle, pencils, and book of weather report forms. Used to take weather observations to provide on-site conditions to the fire weather forecaster or fire behavior analyst. Observations include air temperature, wind speed and direction, and relative humidity. The distribution of surface atmospheric pressure features over an area of the earth as shown on a weather map.
Such action includes operations, which directly support control of fire (e.g. activities to extinguish the fire, ground scouting, spot fire patrolling, search and rescue operations, and backfiring). Computerized multi-resource model that simulates the effects that naturally caused prescribed fires have on the future production of natural resources such as timber, forage, wildlife, recreation, and water. One FireCode project number per fire is assigned for use by all five federal wildland firefighting agencies. Fire codes may be any combination of four-digit alpha-numeric characters. Each agency's finance community incorporates the FireCode project number into the accounting code. Any source of heat, natural or human made, capable of igniting wildland fuels.
Any staffed ground vehicle capable of providing emergency medical care and staffed with appropriate number of trained personnel and equipment for that incident. Confirmation through the re-issuance of an incident qualification card that an individual has regained qualifications for a specified position that was lost through a lack of current experience. A key component in the certification or re-certification process is the subjective evaluation by the appropriate agency official of an individual's capability to perform in a position. A device that adds a predetermined amount of foam concentrate to water to form foam solution. The use of water, foam or retardant along a control line in advance of the fire.
Fire retardant that inhibits combustion primarily by the cooling and smothering action of water. Chemicals may be added to the water to alter its viscosity or retard its evaporation, thereby increasing its effectiveness. Firebrands, flaming sparks, or embers are carried by surface winds, starting new fires beyond the zone of direct ignition by the main fire. A branch within the logistics section responsible for service activities at the incident.
Thermal Fuse Trip Temperature Exceeds 175 °c
Also applied to propellants and other pyrotechnic mixtures, though the proper term there is "reacting". Apparent and obvious design of burned material and the burning path from the area of origin. The duration of flaming and smoldering combustion phases at a specified point within a burn or for the whole burn, expressed in convenient units of time.