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Unit 1 - Basic Concepts of Wildland Fire. Unit Objective. Define basic terminology used in wildland fire. Parts of a Fire. Origin. Head. Flank (Flanks). Rear or Heel. Perimeter. Finger. Pocket. Island. Spot Fire. Head. Left Flank. Right Flank. Rear or Heel. Origin. - PowerPoint PPT Presentation
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01-1-S190-EP
Unit 1 - Basic Concepts of Wildland Fire
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Unit Objective
Define basic terminology used in wildland fire.
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Parts of a Fire
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Origin
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Head
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Flank (Flanks)
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Rear or Heel
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Perimeter
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Finger
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Island
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Spot Fire
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Head
Rear or Heel
•Origin
•Right Flank•Left Flank
Which flank is more active?
Where would you start to fight this fire?
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What are these two fire parts called?
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Fire Behavior Terms
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SmolderingFire burning without flame and barely
spreading.
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CreepingFire burning with a low flame and
spreading slowly.
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RunningFire spread rapidly with a well defined head.
*Click on image to play video
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SpottingFire producing sparks or embers that are carried by the wind or convection that start new fires beyond
the main fire
*Click on image to play video
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Torching
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CrowningFire advances from top-to-top of trees or shrubs more or less independently of the surface fire.
*Click on image to play video
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Flare upSudden acceleration of fire spread or intensity,
but of relatively short duration.
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FirewhirlA spinning, moving column of ascending air rising within
a vortex and carrying aloft smoke, debris, and flames.
*Click on image to play video
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What type of fire behavior is this?
*Click on image to play video
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What type of fire behavior is this?
*Click on image to play video
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Other useful firefighting terms
• Anchor point • Control line• Fireline • Mop-up • Contained • Controlled• L.C.E.S.