CO2 gas is held in the fire extinguisher under pressure, normally around 55 bars at room temperature. By comparison, pressure cookers operate at 1 bar of pressure, modern car tyres are usually inflated to a maximum of 2.5 bars, whilst airliner tyres are inflated at up to 14 bars. At a pressure of 55bars, around two-thirds of a carbon dioxide fire extinguisher’s contents are in a …
This process is so fast, it can cause ice to form on the horn, so never hold a CO2 fire extinguisher by the horn to avoid freezing your skin. To be most effective, a carbon dioxide fire extinguisher should be used no closer than 3 feet and no further than 8 feet from the fire itself. For the UK, they are commonly made in two sizes, 2kg and 5kg.
CO2 fire extinguishers – everything you need to know
Using the extinguisher: • Aim the horn at the base of the fire and move the jet of CO2 backwards and forwards. • Electrical fires: Switch off the electrical item if it is safe to do so. • Liquid fires: Take care not to splash the burning liquid onto nearby areas. Read more at bafe.org.uk.
Small stores: Relatively small retail stores should keep a 2kg CO2 extinguisher on hand. Should an electrical fire occur, a CO2 extinguisher is the best means of putting it out. What is a c02 fire extinguisher for? CO2 fire extinguishers contain pure carbon dioxide which is a clean extinguishant, leaving no residue.
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How to use a CO2 fire extinguisher?
How to use a CO2 fire extinguisher: Use CO2 extinguishers carefully, avoiding holding the extinguisher by the horn. Remember – don’t use CO2 extinguishers in a confined space. In all cases, firstly remove the safety pin to break the anti-tamper seal, and stand well back from the fire.
What is the pressure gauge on a carbon dioxide fire extinguisher?
Carbon Dioxide Fire Extinguisher Pressure Gauges. CO2 fire extinguishers do not have pressure gauges, as the gas is condensed in the cylinder. The only way to assess if a CO2 fire extinguisher is empty is to weigh it. The gross weight (G W) is stamped into the meatl of the cylinder shoulder with other information.
How does a fire extinguisher compare to a pressure cooker?
By comparison, pressure cookers operate at 1 bar of pressure, modern car tyres are usually inflated to a maximum of 2.5 bars, whilst airliner tyres are inflated at up to 14 bars. At a pressure of 55bars, around two-thirds of a carbon dioxide fire extinguisher’s contents are in a liquid state, with a gaseous top layer.
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Applications and Advantages of CO2 Fire Extinguishers Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher