NWCG Glossary of Wildland Fire, PMS 205

In the 1978 version of NFDRS, the herbaceous stage when cold temperatures kill herbaceous plants and force woody fuels into dormancy.

Any combustible material, especially petroleum-based products and wildland fuels.

A general term referring to the spatial distribution and orientation of fuel particles or pieces.

An array of fuels usually constructed with specific loading, depth, and particle size to meet experimental requirements; also, commonly used to describe the fuel composition.

Average height of surface fuels contained in the combustion zone of a spreading fire front.

A natural or manmade change in fuel characteristics which affects fire behavior so that fires burning into them can be more readily controlled.

A series of modified strips or blocks tied together to form continuous strategically located fuel breaks around land units.

Factors that make up fuels such as compactness, loading, horizontal continuity, vertical arrangement, chemical content, size and shape, and moisture content.

Group of fuels possessing common characteristics. Dead fuels are grouped according to 1-, 10-, 100-, and 1000-hour timelag, and living fuels are grouped as herbaceous (annual or perennial) or woody.

Relative flammability of fuel as determined by fuel type and environmental conditions.

The degree or extent of continuous or uninterrupted distribution of fuel particles in a fuel bed thus affecting a fire's ability to sustain combustion and spread. This applies to aerial fuels as well as surface fuels.

The average distance from the bottom of the litter layer to the top of the layer of fuel, usually the surface fuel.

A quantitative measure of fuel moisture and receptability to ignition as determined by an accepted Fire Danger Rating System index that influences fire growth, intensity, or activity.

An identifiable association of fuel elements of distinctive species, form, size, arrangement, or other characteristics. General fuel groups are grass, brush, timber, and slash.

The amount of fuel present expressed quantitatively in terms of weight of fuel per unit area. This may be available fuel (consumable fuel) or total fuel and is usually dry weight.

Act or practice of controlling flammability and reducing resistance to control of wildland fuels through mechanical, chemical, biological, or manual means, or by fire, in support of land management objectives.

Simulated fuel complex for which all fuel descriptors required for the solution of a mathematical rate of spread model have been specified.

Manipulation or removal of fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control (e.g., lopping, chipping, crushing, piling and burning).

Device that emulates the moisture response of specific classes of dead fuels, constructed from organic or inorganic materials (e.g., half-inch ponderosa pine dowels representing ten-hour timelag fuels).

The quantity of moisture in fuel expressed as a percentage of the weight when thoroughly dried at 212 degrees F.

A specially prepared stick or set of sticks of known dry weight continuously exposed to the weather and periodically weighed to determine changes in moisture content as an indication of moisture changes in wildland fuels.

Manipulation, including combustion, or removal of fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control.

A category used to describe the diameter of down dead woody fuels. Fuels within the same size class are assumed to have similar wetting and drying properties, and to preheat and ignite at similar rates during the combustion process.

The temperature reading measured from a fuel stick fully exposed to sunlight, above a representative fuel bed, using one of two methods (within a 3/4-inch or across a 1/2-inch pine dowel).

Any vehicle capable of supplying engine fuel to ground or airborne equipment.

Manipulation or removal of fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control (e.g., lopping, chipping, crushing, piling and burning).

An identifiable association of fuel elements of distinctive species, form, size, arrangement, or other characteristics that will cause a predictable rate of spread or resistance to control under specified weather conditions.

Non-decomposed material, living or dead, derived from herbaceous plants.

A polygon representing the area(s) of unique fuels treatments during a single timeframe.

A one-character code indicating whether or not fine fuels are wet or dry.

A coloring agent used in fire retardants that is designed to fade rapidly following retardant application in order to minimize the visual impacts of the retardant.

Communication about the request and fulfilling that request

Indicates the state of the request.

A burn involving all the layer of the skin. Muscle layers below the skin and bones may also be damaged. Areas of the skin may be charred black or areas that are dry and white.

The process by which the tube is bonded 360 degrees around within the jacket.

An airborne irritating, noxious, or toxic smoke, vapor, or any combination of these produced by a volatile substance or a chemical reaction.

In ICS, function refers to the five major activities: command, operations, planning, logistics and finance/administration.

agency providing funding for treatment or activity. May or may not be the same as location Agency.

Department providing funding for treatment or activity. May or may not be the same as location Department.

Region providing funding for treatment or activity. May or may not be the same as location Region.

For Fuels:List of available funding sources: Fuels Management Regular (FMReg), Fuels BIL Admin (FMBILAdmin), Fuels BIL Control Locations (FMBilControlLocations), Fuels BIL Laborers (FMBilLaborers), Fuels BIL Prescribed Fire (FMBilPrescribedFire), FuelsBIL Thinning (FMBilThinning), Fuels BIL Regular (FMBilReg), Fules Disaster Relief (FMDisasterRelief)
For Post Fire:Fuels (all), Post-fire (ES), BAR (all), BIL (?), Fules Disaster Relief (FMDisasterRelief)?

SubUnit only displayed for BLM

Tribe displayed only for BIA

Unit providing funding for treatment or activity. May or may not be the same as location unit.

A colored flare designed as a railway warning device, widely used to ignite backfires and other prescribed fires.

The measure of water flow in firefighting. It is used to measure the output of wildland and structural fire engines, pumps, hose streams, nozzles, hydrants, and water mains.

Weak or missed area in a retardant drop or in a fireline.

A valve with a gate-like disk that moves up and down at right angles to the flow when actuated by a stem screw and hand wheel. Gate valves are best for service that requires infrequent valve operation and where the disk is kept either fully open or closed.