310 likes | 598 Views
Managing the Burn: Firing techniques and managing ignition for fire effects. FIRING CONSIDERATIONS. Desired fire behavior Topography Wind changes through the predicted burn period Crew safety Firing methods Smoke management. FIRING TECHNIQUES. Back fire Strip fire Spot fire Flank fire
E N D
Managing the Burn:Firing techniques and managing ignition for fire effects
FIRING CONSIDERATIONS • Desired fire behavior • Topography • Wind changes through the predicted burn period • Crew safety • Firing methods • Smoke management
FIRING TECHNIQUES • Back fire • Strip fire • Spot fire • Flank fire • Ring fire • Head fire
Back Firing • Where Used: Understory Burning, Heavy Fuels, Near Control Line, Smoke Sensitive Areas. • Advantages: Low Intensity, Low Scorch, Minimal Spotting Potential, High Consumption. • Disadvantages: Slow, Poor Dispersion.
Strip Head Firing • Where Used: Large Units, Shrublands, Grasslands. • Advantages: Fast, Flexible, Can Adjust Intensity. • Disadvantages: Requires Access to the Unit, Fires Will Interact.
Spot Head Firing • Where To Use: Large Units, Units With Dispersed Fuels, Understory Burns. • Advantages: Fast, Intensity Highly Adjustable, Variable Fire Behavior. • Disadvantages: Need Access to the Unit.
Flank Firing • Where Used: Shrublands, Light Fuels. • Advantages: FL Between Backing and Head Fire Behavior, Easily Modified. • Disadvantages: Susceptible to Wind Shifts, Requires Experience Firing Personnel.
Ring Firing • Where Used: Shrublands, Brush Piles, Clearcuts. • Advantages:Fast, Excellent Smoke Dispersal, Very High Intensity, Good Draw. • Disadvantages: Strong Convection Column May Develop, Spotting Potential May be High.
Head Firing • Where Used:Large Units, Shrublands, In Communities with Light Fuels. • Advantages:Fast, Inexpensive, Good Smoke Dispersal. • Disadvantages:High Intensity, Greater Spotting Potential, Larger Volume of Smoke Generated.
Firing: Methods and Techniques
Head Fire : Portion of the fire burning with the wind or up-slope
Flanking Fire: • Portion of the fire burning at right angles to the wind or slope Flank Fire:Portion of the fire burning at right angles to the wind or slope