What should a water based extinguisher be used on?
As a result, it can actually be used on electrical fires, as the de-ionized water will not act as a conductor, as well as on burning liquids/gases that a standard water extinguisher could not be applied to. Thus, a water mist extinguisher is safe and effective for use on classes A, B, C and K fires.
Are foam fire extinguishers water based?
Foam Extinguishers These are the most common type of fire extinguishers used for class B fires. However, these are water-based which means they these can also be used for class A fires.
When would you not use a water based fire extinguisher?
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.
How do water extinguishers work?
How do Water Extinguishers work? Water and Water Additive Fire Extinguishers work by spraying a jet of water at the fire, which extinguishes the flames and the burning materials, preventing the fire re-igniting.
What type of fire should water never be used on?
Which Types of Fire Is Dangerous to Use Water On? You should never use water on Class B fires involving flammable liquids or Class C fires involving electricity.
What must you not use water and foam extinguishers on?
Foam extinguishers are also safe for use on flammable liquid fires. They CANNOT be used on electrical fires or flammable metal fires as this extinguisher could end up exacerbating the fire. Foam extinguishers are ideal for premises which have multiple fire risks including offices, factories, warehouses and hotels.
Does a water extinguisher remove oxygen?
Water extinguishers, which are the most common, are essentially tanks full of water, often with nitrogen or carbon dioxide as the propellant to make them come out. Water extinguishers work mainly by removing heat from the fire, though they also help to cut off a fire’s oxygen supply.
What Colour panel is used on a dry powder extinguisher?
Blue
There are five fire extinguisher colours: Red – Water (both spray and mist) Blue – Dry powder.
How big should my fire extinguisher be?
Finally, a fire extinguisher that has a capacity of 20 lbs will be about 24 inches tall and will be around 10 1/4 inches wide.
What is a water type of fire extinguisher?
There are 4 types of water extinguishers in the market: Water jet: Operates by spraying water at the burning flames and avoiding the re-ignition. Water spray: Operates by spraying water droplets at the burning flames. Water extinguishers with additives: Adding foaming chemicals to the water makes the fire extinguisher operate much more effectively.
What is a Class A fire extinguisher?
Class A Fire Extinguishers. Class A Fire Extinguishers are used on class A fires only. Typically, the fire fighting agent is water. Class A extinguishers cannot be used on other fire types because water poses a risk when used on electrical, liquid, gas, or metal fires.
What does a water extinguisher do?
Water extinguishers, which are the most common, are essentially tanks full of water, often with nitrogen or carbon dioxide as the propellant to make them come out. Water extinguishers work mainly by removing heat from the fire, though they also help to cut off a fire’s oxygen supply.