A dry powder fire extinguisher is not to be used in any of the following situations: Class F fires; cooking fires, such as chip pan fires. … Fires that involve electrical equipment which is over 1000v. Fires that involve flammable metals (with the exception of specialist dry powder fire extinguishers)
Can dry powder be used on electrical fires?
Dry powder fire extinguishers extinguish the fire primarily by interrupting the chemical reaction taking place and cutting off the oxygen supply. They can be used on fires involving solid combustibles, flammable liquids and electricity.
What class of fire can dry powder extinguisher be used on?
The standard dry powder extinguishers are also known as ABC extinguishers as these can be used for class A, class B and class C fires. However, these should not be used in enclosed spaces as the dry powder in the extinguisher can be easily inhaled.
Can dry powder be used on metal fires?
Standard dry powder extinguishers can extinguish almost any type of fire. Specialist dry powder extinguishers are for certain types of metal fires. However, because of the dispersal of powder, it’s important not to use them in enclosed spaces.
Can you use dry powder on a chip pan fire?
Dry powder extinguishers can be used to tackle fires caused by ignited paper, wood and other organic materials, as well as fires caused by flammable liquids and flammable gases.
Which type of fire extinguisher must not be used on electrical equipment?
Electrical fires need to be put out by a substance that is non-conductive unlike the water or foam found in class A fire extinguishers. If someone attempts to put out an electrical fire with something like water, there is a high risk of electrocution since water is conductive.
What is the difference between CO2 and dry powder fire extinguishers?
Dry chemical fire extinguisher: Dry chemical extinguishers extinguish the fire by interrupting the chemical reaction of the fire triangle. … CO2 fire extinguisher: Carbon dioxide extinguishers take away the oxygen element of the fire triangle. They also remove the heat with a cold discharge.
What can a foam fire extinguisher be used on?
Suitable for use on class A solid combustible fires and class B flammable liquid fires, foam fire extinguishers create a cooling blanket effect, smothering burning materials and preventing reignition. Not for use on chip pan fires unless they are described specifically as class F extinguishers!
What extinguisher should not be used on flammable liquids?
Water extinguishers are used on Class A fires involving solid combustibles. They are not suitable for fires fuelled by flammable liquids or where electricity is involved.
What type of fire extinguisher should be used on materials?
Use: Water fire extinguishers are best for combatting Class A fires, for example fires involving organic solid materials, such as wood, cloth, fabric, paper and plastics. Dangers: Do not use on burning fat or oil and also never use on fires involving electrical appliances.
What Colour is a dry powder fire extinguisher?
Blue (Dry Powder Extinguishers)
Blue label fire extinguishers are sometimes known as ‘ABC’ extinguishers because they can be used on Class A, B, and C fire types.
What is a dry powder chemical for combustible metals rated for a Class C electrical fire?
“Regular or Standard” (BC) dry chemical refers to an agent that is suitable for use on either Class B or C type fires. These agents are sodium bicarbonate based and blue in color.
What does a dry powder fire extinguisher contain?
Ordinary dry chemical extinguishers are used for Class B and C fires only. They often contain sodium bicarbonate (baking soda), which comes out as a white powder.
What can’t you use a fire blanket on?
They can not be used on fat fires and deep fat fryer fires, as their jet would spread the burning fat. They should also not be used in confined spaces (small kitchen or boat cabins), as the powder can easily be inhaled.
What fire extinguisher would you use on a fryer fire?
The ONLY fire extinguishers safe for deep fat fryers are wet chemical extinguishers! Never use traditional foam or powder extinguishers on burning fat or oil. If you use wet chemical extinguishers, make sure you empty the entire content of the extinguisher on the oil, even if the flames have been doused already!
Can you use a fire blanket on a chip pan?
A build-up of fat and grease can easily catch fire. Never throw water on a chip pan fire. A fire blanket will smother small frying pan fires if used properly and quickly. Never fill a pan more than one-third full of oil.