WUI Flashcards
Interface
Structures have clear line of demarcation to woodland fuels along roads and fences.
Intermix
Structures scattered throughout WL area
TRA
Preplanned area where FF can take temporary refuge without use of fire shelter. Lee side of structure, inside structure, parking area..
Threatened defensible
safety zone and TRA present.
lack of defensible space, or other challenges require FF to use structure defence strategies during fire
Threatened non-defensible
either no safety zone or TRA and or structure is unsafe to defend during fire front
Is it ok to base your decision to remain at structure on use of SCBA
No
Equipment placement
-ID TRA and safety zones
-stay mobile and wear all PPE
-back rigs and park in clear area
-park behind structure, placing structure between rig and fire
-have defence line ready
-avoid long hose lays
-keep sight contact with personnel
Water use guidelines
-Keep at least 100 gallons as reserve
-top off at every opportunity
-conserve water
-extinguish fire at lowest intensity, not while flaring up
-apply water only if it controls the fire spread
Class A foam guidelines
-direct attack at base of flames
-apply to roofs and siding 10-15 mins prior
-foam vegetation surrounding structure
What is the greatest challenge when making a strategy for structure defence?
making an accurate fire behaviour forecast in advance of the fire arrival
What is implied by the term tactical maneuver
-movement of purposeful reaction to change
-most effective when potential change to primary plan have been identified and planned for
True or false- Tactical manoeuvres can be offensive or defensive
true
7 tactical actions available to structure defence resources
- check and go
- prep and go
- prep and defend
- fire front follow
- bump and run
- anchor and hold
- tactical patrol
Check and go
-rapid eval to check for occupants requiring removal or rescue
- for threatened non-defensible
Prep and go
-implies that some prep of structure may be safely completed prior to recourses leaving area
-for threatened non-defensible
Prep and defend
-used when safety zone or TRA is present and time exists to prep structure safely
-for threatened defensible
Fire front following
-a follow up strategy used with check and go, prep and go and bump and run tactics
-come behind fire and check for victims, effect perimeter control, extinguish hot spots and reduce ember production
Bump and run
-Tactic where resources move ahead of fire front in the spotting zone to extinguish spot fire and hot spots and defend structure if possible
-may be effective in early stages of inc when recourse are limited
-perimiter control and structure defence are secondary considerations
-frontal attack strategy and a watch out situation
Anchor and hold
-taking a stand to stop fire progression
-utalizing control lines and large water streams from fixed water supplies to stop fire spread.
-goal is to extinguish structure fires, protect exposure and reduce ember wash
-most effective in urban neighbourhoods
-utilizes both fixed and mobile resources
Tactical patrol
-monitoring an assigned area
-used either in neighbourhoods where fire has passed or in neighbourhoods where potential ember wash exists
PACE
Primary plan
Alternate Plan
Contingency Plan
Emergency Plan
Five levels of engagement
DRAW-D
- Defend- Holding actions, protecting property
- Reinforce- Bring more resources to advance or defend
- Advance- Anchor and flank, direct or indirect, active burnout ops
- Withdraw- Cease activities until conditions improve
- Delay- wait until situation has modified to allow different level of engagement
8 parts of a structure assessment checklist
- Address
- Road access
- Structure/Building
- Clearance/exposure/Defensible space
- Hazardous materials
- Water Sources
- Evacuation
- Estimated resources for protection
