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.
What is one disadvantage of a CO2 extinguisher?
Disadvantages Of Carbon Dioxide Extinguishers
As CO2 works by displacing the oxygen around the fire, it is not suitable for outdoor use, or in environments exposed to windy conditions. CO2 is a high pressured extinguisher. Using it on class A fires or class F fires could cause the fire to spread.
What is a disadvantage of multi class dry chemical fire extinguishers?
Thoughtless use may lead to the powder causing more damage than the fire itself, using dry powder fire extinguishers in kitchens or offices as powder can contaminate food and inhibit the use of electrical components such as keyboards if discharged.
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.
Is CO2 fire extinguisher good for home?
That being said, a CO2 extinguisher can still be used in any other part of the house, including the garage. 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.
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 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.
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.
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 advantage of ABC fire extinguisher?
ABC Fire Extinguishers are very versatile. They are often the ideal choice being that they are able to extinguish all different types of fires. ABC Fire Extinguishers contain monoammonium phosphate, a dry chemical, that is able to quickly extinguish the fire.
What are the disadvantages of dry chemical fire extinguisher?
- should not be used in confined spaces as it is an asphyxiant gas.
- has limited cooling properties.
- offers no protection against reignition.
- a non insulated horn can cause frost burn if the user touches it when in use.
- other types of extinguishers will still be required for other types of fires.
What kind of fires is ABC extinguisher not good for?
What kinds of fires is a B:C extinguisher not good for? Wood, paper and cloth.