AFFF FOAM. AFFF foam fire extinguishers have a cream label and are highly effective on class A and class B fires (the foam agent helps to prevent re-ignition). If foam extinguishers have been dielectrically tested they can be used on electrical appliances.
Can foam extinguishers be used on metal fires?
This type of fire extinguisher should not be used for fires caused by flammable metals, kitchen fires and fires that involve electrical equipment. These extinguishers work by creating a cooling effect on the fuel that is responsible for causing the fire.
Can foam extinguishers be used on electrical fires?
Foam extinguishers build up of foam on the surface of the burning liquid, cutting off the oxygen supply to the fire and cooling the hot liquid. Electrical fires: If your foam extinguisher is tested to 35000 Volt (35kV) you can use the extinguishers on live electrical fires. However, keep a safety distance of 1m.
What fires can foam extinguishers 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 type of fire extinguisher is used for metal fires?
Class D fires involve combustible metals, such as magnesium, titanium, and sodium. Extinguishers with a D rating are designed to extinguish fires involving combustible metals.
Which type of fire extinguisher must not be used on electrical equipment?
In the case of electrical fires, also known as energized electrical fires, a class C fire extinguisher is needed to put it out. If this kind of fire occurs the source of electricity must be identified and shut off because the electricity itself will provide the fire with a constant source of ignition.
Which two types of extinguishers could be used on an electrical fire?
Foam extinguishers are ideal for premises which have multiple fire risks including offices, factories, warehouses and hotels. CO2 fire extinguishers can be identified by a black label reading “CO2”. CO2 fire extinguishers are safe for use on flammable liquid and electrical fires.
What is the best fire extinguisher for electrical fire?
Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment. Both monoammonium phosphate and sodium bicarbonate are commonly used to fight this type of fire because of their nonconductive properties.
What must you not use water and foam extinguishers on?
Don’t Add Water
Never use a water extinguisher on electrical fires or any fire involving a flammable liquid. As any science student will tell you, water conducts the current. If you spray water onto an electrical fire, inadvertently or intentionally, you risk electrocuting yourself.
What is foam extinguisher?
9 LITRES FOAM FIRE EXTINGUISHERS (Chemical Foam)
Foam is an effective smothering agent, used for liquid fires mainly. It acts by flowing over the liquid fuel oil surface and isolating the fire from the air, also prevents re-ignition due to the foam stability.
How many types of firefighting foam are used in portable extinguishers?
There are two major types of firefighting foam, Class A and Class B. Class A foams are used to extinguish fires caused by wood, paper, and brush. Class A foams generally do not contain per- and polyfluoroalkyl substances (also known as “PFAS”).
Which of the fire extinguisher is not suitable for electrical fire accident?
Water-based extinguishers cannot be used safely on energized electrical fires or flammable liquid fires.