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24 Cards in this Set
- Front
- Back
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List three parts that make up foam |
Air Foam concentrate Water |
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Explain how the following effects extinguish a fire: Cooling effect |
Cools the heat |
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Explain separating effect |
Closed foam cover separates the combustion zone from the ambient air |
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Explain cover effect |
Closed foam cover stops any further gas evaporation from burning materials,so flammable gases from the incendiary matter can no longer get into the combustion zone |
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Explain suppression effect |
Flooding spaces channels or plant parts with high expansion or medium expansion foam suppress the atmospheric oxygen and flammable gases that are necessary for the combustion zone |
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Explain insulation effect |
Low thermal conductivity of the foam insulates flammable material that has not yet caught fire or has already been extinguished against thermal radiation and ignition sources |
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What are the two classes of foam and briefly explain where you would use them |
Class A Vegetation fire
Class B Petrol fires |
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Explain method of Rolling |
You aim before the fire and it starts to roll over it |
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Explain deflection |
You hit an obstruction/object above the fire and it deflects off it and on to the fire |
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Explain floating |
Creating a blanket over the fire wall |
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List 5 things you need to consider when using foam |
You have enough foam Use it to the manufacturers instructions Test foam consistency before applying on fire Avoid skin contact Correct PPE to be worn |
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List 3 reasons why you should avoid walking through a foam blanket |
Hidden obstruction Slippery surface May re ignite fire if the foam blanket is broken |
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List 5 things you need to keep in mind when lifting portable pumps |
Hold pump firmly, keeping your arms close to your body Ensure you have enough man power Avoid twisting when lifting Use leg muscles not back Keep load level and balanced |
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Explain control hazards when using the pump Hot exhaust |
Ensure adequate safety guarding and have fire extinguisher at the read |
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Explain control hazards when using the pump Fuel spillage |
Follow correct procedures for refuelling hot engines |
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Explain control hazards when using the pump Excessive noise |
Use hearing protection |
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Explain control hazards when using the pump Exhaust fumes |
Operate pumps in well ventilated areas |
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Explain control hazards when using the pump Drowning |
Take care near deep water |
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Explain control hazards when using the pump Engine seizure |
Keep pump level when operating on a slope to ensure adequate oil feed to engine |
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Explain prime |
Remove air from pump to ensure pump and suction hoses get maximum water flowing through |
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Explain draught |
Negative pressure drawing water from open water supply |
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Explain ground monitor |
Piece of waterway equipment that can deliver a great amount of water and can be usually left alone |
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Explain portable dam |
A dam created to hold water |
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Explain suction hose |
Equipment used to draw the water out of an open water supply into the portable pump (negative pressure) |
