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12 Cards in this Set
- Front
- Back
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Types of ventilation? |
Natural Manual - vertical and horizontal Mechanical - positive/negative pressure Hydraulic - hose stream |
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Natural ventilation is? |
Using natural air currents to ventilate a building, opening doors or windows |
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Manual - Horizontal and vertical ventilation is? |
Horizontal - creating openings at same level as fire Vertical - creating openings above the fire, usually at roof level |
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Mechanical - negative and positive ventilation? |
Negative - fan placed at doorway to draw combustion products out Positive - fan used to drive large volumes of air in |
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Hydraulic - hose stream? |
Wide spray pattern, air is drawn into fog stream and product of combustion are drawn out |
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Hydraulic - hose stream? |
Wide spray pattern, air is drawn into fog stream and product of combustion are drawn out |
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Hose stream pattern, degrees and distance? |
60 degrees 0.5m of window/doorway Stream covers 85 to 90 percent of opening |
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Salvage is and the three stages are? |
Prevention or reduction of damage from indirect causes such as heat, smoke, water, falling debris, dust, breakage Preventative - takes place simultaneously with FF to reduce amount of damage Protective - activities undertaken in conjunction with the control of fire. Natural extension of preventative Recovery - commences one the fire has been extinguished |
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Overhaul is? |
Searching for and extinguishing hidden or remaining fires |
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Benefits of overhaul are? |
Locates hidden fires Prevents rekindling of fire Helps determine cause of fire Prevents further damage Improves public relations |
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Purpose for ventilating? |
Improves safety of people trapped Improves damage to structure Provide exposure protection Prevents and reduces spread or fire Improves FF conditions- visibility, non-toxic atmospheres, reduces temps in structure |
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Protect and preserve by? |
Reducing the amount of water used with hose Use a fog pattern to knock down fire Do not use straight jet on fire Tape off area Utilise tarps if required |
