Fires on construction sites can be very dangerous. In the UK many people are killed and injured by fires. On a construction site, smoke and fires can spread quickly and you will need to know what to do if you find a problem. It is important you know what to do in the event of a fire and which type of fire extinguisher you should use. Not only for your CSCS test but in case you need to use one in the event of a fire breaking out.
We have prepared a mock test of fire extinguishers and their users below. Try out the mock test below and let us know how you get on in the comments.
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Every year in the UK, many people are killed or injured by fires. Construction, demolition, and refurbishment sites can be particularly high-risk for fire. Smoke and fire can spread quickly, and the risk can increase depending on the stage of the project. Therefore, it is essential to be familiar with different types of fire extinguishers. Not only will this knowledge be tested on the CSCS Test, but you may also need to use a fire extinguisher in an emergency. Click the Begin Test button below to start the CSCS Mock Test for Fire Extinguishers.
Fire extinguishers are a crucial part of fire safety on construction sites. They are used to put out small fires before they can spread and cause significant damage. There are several different types of fire extinguishers, each designed for use on specific types of fires.
The table below lists the different types of fire extinguishers and their corresponding colours, as well as the types of fires they can and cannot be used on.
|Type of Fire Extinguisher||Colour||Uses||Cannot be Used on|
|Water||Red||Class A fires (wood, paper, cloth)||Electrical fires|
|Foam||Cream||Class A and B fires (flammable liquids)||Fires involving live electrical equipment|
|Dry Powder||Blue||Class A, B, and C fires (flammable gases)||Fires involving cooking oil or fat|
|Carbon Dioxide||Black||Class B and C fires (electrical equipment)||Fires involving metals|
|Wet Chemical||Yellow||Class F fires (cooking oil and fat)||Fires involving live electrical equipment|
It is important to use the correct type of fire extinguisher for the type of fire. Using the wrong type of extinguisher can be ineffective and can even make the fire worse. Always follow the instructions on the fire extinguisher and use it only when it is safe to do so.
Water Fire Extinguishers: These extinguishers contain water and compressed air, and are designed to fight Class A fires, which include combustible materials such as wood, paper, cloth, rubber and some plastics. Water fire extinguishers should not be used on electrical equipment or flammable liquids.
Foam Fire Extinguishers: This type of extinguisher is suitable for Class A and B fires, meaning that it can be used on combustible materials such as wood, paper, cloth and rubber as well as flammable liquids like petrol and paint. It is also effective on electrical equipment when used with caution. Foam fire extinguishers work by creating a blanket over the burning material that cuts off oxygen supply and prevents reignition of the flames.
Dry Powder Fire Extinguishers: This type of fire extinguisher is suitable for tackling Class A, B and C fires; this includes combustible materials like wood and paper as well as flammable liquids like petrol and grease but also electrical equipment – making them ideal for most environments. They work by releasing a fine powder which smothers the flames while also cooling down the burning material at the same time.
Carbon Dioxide (CO2) Fire Extinguishers: CO2 fire extinguishers are designed to tackle Class B fires only; this includes flammable liquids like petrol or paint but not combustible materials or electrical equipment - so they’re best suited to areas where there’s a risk of a liquid-based fire such as garages or workshops. CO2 works by displacing oxygen around the burning material so it cannot continue to burn – however it does not provide any cooling effects afterwards so reignition can still occur if left unchecked after use.
Wet Chemical Fire Extinguishers: These are designed specifically for tackling deep fat fryer fires (Class F). Wet chemical works by forming a layer between the fuel surface area and oxygen in order to break down the reaction process needed for combustion – thus preventing reignition from occurring afterwards too thanks to its cooling properties that come from its alkaline mixture base within the solution itself.