22: Wildland and WUI Flashcards
Wildland fires: define
Any ignition, natural or planned, that burns in wildland areas and consumes natural fuels.
Wildfire Def:
Any _____, _____l or _____, that burns in _____ areas and _____ _____ _____.
Any ignition, natural or planned, that burns in wildland areas and consumes natural fuels.
WUI definition:
Wildland Urban Interface is any area where structures are located adjacent to, or among combustible wildland fuels.
Different WUI types:
Occluded
Interface
Intermix
Wildland fire types: (3) and examples
Crown
Surface
Ground
Wildfire behavior triangle
Weather
Fuel
Topography
Weather factors that influence wildfire behavior:
Wind
Temperature
Relative Humidity (not humidity)
Precipitation
4-20’s of wildfire weather:
Wind of 20 Km/h or greater
Relative humidity of 29% or less
Temperatures of 20C or greater
20 days or more without significant precipitation
Crossover:
A situation in which relative humidity is less than temperature leading to extreme fire behavior
L.A.C.E.S.
Lookouts
Anchor points
Communications
Escape routes
Safety zones
Wildfire Benchmarks
Out-of-control
Being held
Under control
Extinguished
Methods of attack (wildland)
Direct - attacking perimeter - EFRS most common - HFI 1-3
Indirect - removing fuel ahead, uses barriers - HFI 4-6
Mop-up - cold trailing
How much hose in each EFRS wildland bag, what trucks are they on?
Bags on all Pumps, ATPs and Tankers carry two bags
Each bag contains 600’
Structural triage: (3 types)
Threatened non-defendable
Threatened defendable
Not threatened
Sprinkler set up systems for SPU:
Center pump (hydrant)
Counter pump (hydrant)
Dead end system