TYPE OF FIRE EXTINGUISHERS PDF DOWNLOAD!
The types of fire extinguisher and classes of fire explained in a simple guide. We explain how foam, water, CO2, powder & wet chemical extinguishers work. Different Types of Fire Extinguishers cater to different types of fires. What extinguisher works best for your facility? Learn symbols for extinguisher classes. March 1, When it comes to fire safety, it is important to know not all fires are the same. In a previous Fireline blog post, we discussed the Class Types of.
|Author:||Mr. Luciano Bartoletti|
|Published:||14 October 2017|
|PDF File Size:||46.95 Mb|
|ePub File Size:||5.96 Mb|
|Uploader:||Mr. Luciano Bartoletti|
WATER Water fire extinguishers have a class A rating and are suitable for fighting fires involving type of fire extinguishers combustibles such as wood, paper and textiles.
Water spray extinguishers use a very fine spray of water droplets, each droplet is surrounded by air which is non-conductive.
Most type of fire extinguishers spray fire extinguishers carry a 35 kV dielectric test approval which means they have been tested on a 35, Volt electrical source at one meter.
What are the Different Types of Fire Extinguishers & Their Uses
Water extinguishers with additives are water extinguishers with foaming chemicals added. The water type of fire extinguishers its natural surface tension meaning that it can soak into the burning materials more effectively. Adding the chemicals to the water means that a smaller extinguisher can produce the same fire rating as a larger, water only, extinguisher.
Water mist, or fog, extinguishers apply water in the form of mist, or fog, the droplets are much smaller than those from type of fire extinguishers water spray extinguisher. The smaller the droplet, the larger its surface area in relation to its size, the quicker the droplet evaporates which absorbs the heat energy faster.
Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. This agent also works by creating a barrier between the oxygen type of fire extinguishers and the fuel element on Class A fires.
It is important to use the correct extinguisher for the type of fuel! Using the incorrect agent can allow the fire to re-ignite after apparently being extinguished succesfully. Overall, they are type of fire extinguishers inexpensive choice and non-toxic.
The standard dry chemical extinguisher is best suited for Class B and C fires.
What do the A B C ratings mean on Fire Extinguishers?
They function by interrupting the flow of chemical reactions, and are non-toxic. The sodium bicarbonate-based dry type of fire extinguishers is more effective than water on Class B flammable liquid and Class C electrical fires.
Foam creates a separating layer between the flame and the fuel source — ideal for use on flammable liquids. The CO2 extinguisher does exactly that type of fire extinguishers extinguishes CO2. By doing so, it removes oxygen from the fire, effectively suffocating it of oxygen.
It is perfect for use on class B fires that involve flammable liquids and on electrical fires. Wet Chemical Fire Extinguisher The wet chemical extinguisher is type of fire extinguishers specialized type primarily focused on class K fires, those involving cooking media such as animal and vegetable fats or oils.
These extinguishers contain a solution composed of potassium that effectively launches a two-pronged assault on fires. First, the liquid mist it sprays acts to cool the fire.
Types of Fire Extinguishers - Colours, Signage & Fire Classes
Second, due to the chemical reaction of the solution with the cooking medium, a thick soap-like substance forms, sealing type of fire extinguishers surface of the liquid to prevent re-ignition.
When used against class A fires, the user can simply point and spray. However, when used against class B fires — those with flammable liquids — they should not be sprayed directly into the liquid.
This could cause the fire to be pushed and spread to surrounding areas.