While fire extinguishers are needed to put out small fires, they also have an amazing benefit towards the environment. By having the ability to control fires, fire extinguishers limit the amount of pollution that is caused by smoke and burning debris.
What is one disadvantage of a fire extinguisher?
Disadvantages: limited to class A fires only. leaves a small amount of residue after the fire has been extinguished. water is an electrical conductor, making the extinguisher unsuitable if the class of fire has an electrical supply, or for use near live electrical equipment.
When should you not use a CO2 fire extinguisher?
Dangers: CO2 extinguishers should not be used on fires involving solid materials, such as paper, wood and fabric, and also are not suitable for use on flammable gases. How it works: The CO2 works by cutting off the fire’s oxygen supply. This then smothers it and, as it does so, extinguishes the flames.
What are the 4 types of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
How do I know if my fire extinguisher is still good?
Rubin recommends checking the pressure gauge monthly. “If the needle is in the green area, it’s functional,” he says. If it falls anywhere else, the extinguisher is unreliable and should be serviced or replaced. For an older model without a gauge, have it checked by a pro.
What type of fire extinguisher do I need?
When looking for which home fire extinguisher to buy, consider buying an all-purpose or multi-rated extinguisher, labeled “ABC.” This means the extinguisher can be used on Class A, B and C fires. … Fire extinguishers should also be kept in the kitchen and garage.
What is the difference between ABC and co2 fire extinguisher?
CO2s are designed for Class B and C (flammable liquid and electrical) fires only. Carbon Dioxide is a non-flammable gas that extinguishes fire by displacing oxygen, or taking away the oxygen element of the fire triangle.
Why water is not suitable for fire extinguisher?
Water is not suitable to extinguish fires involving electrical equipment as water is a good conductor of electricity and can harm those trying to douse the fire. In case of oil and petrol, water is heavier than oil so water sinks below and the oil keeps burning. A fire extinguisher can be used in such cases.