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17 Cards in this Set
- Front
- Back
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What are the 3 main factors that influence Wildfire behaviour |
Weather Topography Fuel |
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What are four key elements of weather? |
Air temperature Relative humidity Wind (speed and direction) Atmospheric stability |
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How do slopes affect the speed of a fire? |
For every 10° of upslope, doubles the rate of spread. For every 10° of down-slope halves the rate if spread. |
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What are some of the contributing factors that will affect fuels? |
Fuel type Fuel size Quantity Arrangement Moisture content |
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What are the sizes of fuel? |
Fine fuel (less than 6mm in diameter) Medium sized fuel (6mm to 25mm in diameter Coarse fuel (more than 25mm in diameter) |
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What is the FMC (fuel moisture content) influenced by? |
Daily humidity cycles Effects of recent rain Moisture content of the soil Condition of living vegetation |
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Name the parts of a fire |
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What are the 4 types of fires? |
Ground fire Surface fire Crown fire Spotting |
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What do you have to be aware of when shovelling soil onto a fire to put out flames? |
Be aware that embers may continue to burn beneath the surface |
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What are some of the tools used in dry firefighting? |
Rake hoes, shovels and chainsaws. |
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What are 3 methods of offensive firefighting with wildfire? |
Direct attack (low intensity fires) Parallel attack (medium to high intensity fires) Indirect attack (used for intense and inaccessible wildfires) |
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What are 3 methods of defensive firefighting with wildfires? |
Line defence Ember defence Back stop defence |
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5 major rules of mop up |
- Mineral earth break 1m wide minimum - Extinguish tree stumps and logs within 20m of the perimeter of burnt area - Extinguish burning trees within 100m of the perimeter of burn area - Burn out unburnt pockets as required - heaps must be: extinguished, broken up, dispersed, separated |
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What foam do we use with wildfires? |
Class A foam |
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Hazards encountered at a wildfire |
Dehydration and inadequate nutrition Smoke Heat stress Fatigue |
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What does LACES stand for? |
Lookouts Awareness Communication Escape routes Safety zones |
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PPE required at a bushfire |
Goggles Particilate mask Helmet Level 1 gloves Level 1 shirt Level 2 ankle boots Level 1 pants |
