CARBON DIOXIDE FIRE EXTINGUISHER
How Carbon dioxide Fire Extinguishers Work and What’s Inside Them
Carbon dioxide (CO2) fire extinguishers are commonly used to extinguish fires involving electrical equipment and flammable liquids. These types of extinguishers work by displacing oxygen from the surrounding area, which is necessary for combustion. When activated, the CO2 gas floods the area around the fire and pushes out the oxygen, thereby smothering the flames.
A Carbon dioxide fire extinguisher contains carbon dioxide gas stored under high pressure in a cylinder. The cylinder is typically made of steel or aluminum and is designed to withstand the high pressure of the gas inside. Carbon dioxide fire extinguishers do not contain any chemical agents or water, making them a clean and effective solution for extinguishing certain types of fires.
When the fire extinguisher is activated, a valve releases the pressurized CO2 gas from the cylinder and directs it through a nozzle or horn, which helps to aim the gas at the base of the fire. As the CO2 gas is released, it expands rapidly, creating a cold cloud that smothers the fire and displaces oxygen.
Carbon dioxide fire extinguishers are especially effective for fires involving electrical equipment and flammable liquids because they do not leave any residue, unlike other types of extinguishers. Additionally, CO2 gas is non-conductive, which means it is safe to use on electrical fires without risk of electrocution.
It’s important to note that Carbon dioxide fire extinguishers should only be used on Class B and C fires (flammable liquids and electrical fires). They should not be used on Class A fires (ordinary combustibles) because they do not provide the necessary cooling effect to extinguish the fire.
CO2 fire extinguishers are typically tested to a pressure of 2175 psi (pounds per square inch) and have a working pressure of 850 psi at 70 degrees Fahrenheit. Due to the high pressure of the gas and the risk of frostbite from prolonged exposure to the cold gas, CO2 fire extinguishers should only be used by trained professionals or individuals with proper training.
In summary, CO2 fire extinguishers work by displacing oxygen and smothering fires involving electrical equipment and flammable liquids. They contain carbon dioxide gas stored under high pressure in a cylinder and should only be used by trained professionals or individuals with proper training. Carbon dioxide fire extinguishers are a clean and effective solution for certain types of fires and do not leave any residue.
CARBON DIOXIDE FIRE. EXTINGUISHER USAGES
CO2 FIRE EXTINGUISHERS CONTAIN PURE CARBON DIOXIDE WHICH IS A CLEAN EXTINGUISHANT, LEAVING NO RESIDUE. SUITABLE FOR CLASS B FLAMMABLE LIQUID FIRES (PETROL, OIL, SOLVENTS), AND RECOMMENDED FOR USE ON LIVE ELECTRICAL EQUIPMENT.
HAZARDS RELATED TO HUMAN HEALTH
When a CO2 fire extinguisher is discharged, it releases a large amount of carbon dioxide gas into the surrounding area. While carbon dioxide is not toxic in small amounts, the rapid release of a large quantity of CO2 gas can present several hazards related to human health.
One hazard of CO2 gas discharge is the displacement of oxygen. Since CO2 gas is heavier than air, it can accumulate in low-lying areas and displace oxygen, creating an oxygen-deficient environment. If someone is in an enclosed space where a CO2 fire extinguisher has been discharged, they may experience difficulty breathing and could even suffocate if they are not able to exit the area quickly.
Another hazard of CO2 gas discharge is the risk of frostbite. When CO2 is released from a fire extinguisher, it rapidly expands and cools, creating a cloud of cold gas that can cause frostbite if it comes into contact with skin. It is important to wear protective clothing and gloves when using a CO2 fire extinguisher to prevent frostbite.
Additionally, prolonged exposure to high concentrations of CO2 gas can cause symptoms such as headache, dizziness, and nausea. These symptoms are usually temporary and will subside once the person is no longer exposed to the gas. However, individuals with pre-existing respiratory conditions may be more sensitive to the effects of CO2 gas and should avoid prolonged exposure.
Overall, while CO2 fire extinguishers are effective in certain situations, it is important to use them safely and appropriately to avoid hazards related to human health. It is also important to ensure that anyone who may be using a CO2 fire extinguisher is properly trained and aware of the potential hazards associated with its use
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