unit 5 use of water. unit 5 objectives b explain different types of water use operations b...
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Unit 5 Use of WaterUnit 5 Use of Water
Unit 5 ObjectivesUnit 5 Objectives
Explain different types of water use Explain different types of water use operationsoperations
Demonstrate laying a wet line with both Demonstrate laying a wet line with both simple and progressive hoselayssimple and progressive hoselays
Show methods of picking up hose and Show methods of picking up hose and placing it back into service placing it back into service
Water for wildland firesWater for wildland fires
Much less water is needed for fighting Much less water is needed for fighting wildland fires than is used for other fire wildland fires than is used for other fire operationsoperations
Need to make whatever water available Need to make whatever water available go as far as possiblego as far as possible
Operating nozzlesOperating nozzles
Wildland nozzles Wildland nozzles flow much less flow much less water than structure water than structure nozzlesnozzles
Straight streams can Straight streams can be used for reaching be used for reaching hotspots and hotspots and knocking down fire knocking down fire ahead of the crewahead of the crew
Operating nozzlesOperating nozzles
Narrow and wide Narrow and wide angle fog or spray angle fog or spray patterns can be patterns can be used to lay wet linesused to lay wet lines
Wet lines should be Wet lines should be placed on the fires placed on the fires edgeedge
Wet LinesWet Lines
This is laying a path of watered down This is laying a path of watered down material along the edge of the firematerial along the edge of the fire
Should extend into both the green and Should extend into both the green and the blackthe black
This method works best if used with This method works best if used with class A foamclass A foam
Unit 5 Use of Water Unit 5 Use of Water (continued)(continued)
Water sourcesWater sources• CreeksCreeks• PondsPonds• Porta-Tanks (staging operations)Porta-Tanks (staging operations)• Other water sourcesOther water sources
Types of wildland hoseTypes of wildland hose• 1 ½” and 1” single jacket hose1 ½” and 1” single jacket hose• Booster hoseBooster hose• Special hoselinesSpecial hoselines
Unit 5 Use of waterUnit 5 Use of water
Types of appliances Types of appliances and toolsand tools• Pressure relief valvePressure relief valve• Check/bleeder valveCheck/bleeder valve• AdaptersAdapters• IncreaserIncreaser• ReducerReducer• Caps and plugsCaps and plugs• GasketsGaskets
• WyesWyes• Forestry teesForestry tees• inline shut offinline shut off
Hazards to HoselaysHazards to Hoselays
Fire DamageFire Damage Vehicle TrafficVehicle Traffic Sharp RocksSharp Rocks Damage from Sharp ToolsDamage from Sharp Tools
Unit 5 Use of WaterUnit 5 Use of Water
Types of water operationsTypes of water operations• Simple hoselaySimple hoselay• Progressive hoselayProgressive hoselay• Mobile attack linesMobile attack lines• Backpack pumpsBackpack pumps
Simple hoselaysSimple hoselays
Simple hoselays can run frompreconnected forestry hose, lines set up from a discharge, or booster lines.
Booster lines should not be stretched too far due to the time it takes to wind them back up, and that they aredifficult to cut.
Progressive hoselaysProgressive hoselaysProgressive hoselays use multiple lengths of hose added when needed at the nozzle end.
This means the crew will have to carry all the hose, extra nozzles, hose clamps, wyes and tees.
Progressive lays can exceed 1000ft
Starting a progressive Starting a progressive hoselayhoselay
Progressives usually Progressives usually start as simple laysstart as simple lays
Preconnected lines Preconnected lines can be set up with a can be set up with a wye & nozzle wye & nozzle combination to make combination to make the first added line the first added line go easiergo easier
Adding to the progressive Adding to the progressive laylay
1.1. Clamp hoseline at Clamp hoseline at least 10’ away from least 10’ away from couplingcoupling
2.2. Remove nozzle Remove nozzle from hoselinefrom hoseline
3.3. Add the next length Add the next length of hose &attach of hose &attach nozzle to new nozzle to new sectionsection
4.4. Slowly remove Slowly remove clampclamp
Mobile attacksMobile attacks
Mobile attacks are performed from moving vehicles using mountednozzles.
This method workswell in areas wherevehicles can easilyget to
Do not ride on the outsideof the vehicle!!
Mobile AttacksMobile Attacks
Spray bars are small Spray bars are small nozzles mounted at nozzles mounted at the front a a vehicle the front a a vehicle designed to spray a designed to spray a fan of water across fan of water across the path of the path of movementmovement
Mobile attacksMobile attacks
Booster lines can be Booster lines can be threaded into a threaded into a passenger seat and passenger seat and operated out a open operated out a open windowwindow
The backpack pumpThe backpack pump
Backpack pumps carry 4 to 6gallons of water, and go anywhere that a handcrew can
Can be easily filled up from many different water sources
Works well for knocking down smaller flame lengths
FoamFoam
Class A foam allows Class A foam allows water to soak into water to soak into materials much materials much easiereasier
Bubbles in the Bubbles in the mixture also helps to mixture also helps to form a shield form a shield against radiant heat against radiant heat
The Gasner PackThe Gasner Pack
This is a method of This is a method of rolling wildland hose rolling wildland hose
Easier to stretch out, Easier to stretch out, easier to carryeasier to carry
Building a Gasner Method 1Building a Gasner Method 1
Building a Gasner Method 2Building a Gasner Method 2
Building a GasnerBuilding a Gasner
Building a GasnerBuilding a Gasner
Building a GasnerBuilding a Gasner
Figure 8 RollFigure 8 Roll
The figure 8 is a The figure 8 is a quick method of quick method of draining and picking draining and picking up hose up hose
The figure 8 bundle The figure 8 bundle can be pulled out can be pulled out straight for use straight for use againagain