What are class B fire extinguishers used for?

Fire threats have been classified into different categories such as Class A, B, C, D, and K as per the different sources that feed these fires. The Class B fire is extremely hazardous. This kind of fire is fueled by flammable and combustible liquids such as alcohol, petroleum, gasoline, or even flammable gases. This kind of fire cannot be extinguished using water or water-based fire extinguisher. To deal with a Class B fire, it is essential to use a fire extinguisher rated class B. 

What is a Class B fire extinguisher? 

A Class B fire extinguisher is specifically designed to extinguish Class B fires in high-risk environments. Workshops, petrol pumps, laboratories, commercial warehouses, manufacturing buildings, and other businesses involved in the production, storage, or transportation of flammable liquids or gasses are risk-prone to industrial accidents that may cause a class B fire.  

To extinguish a Class B fire, the flames need to be smothered entirely, and the access to the source that is fueling the fire needs to be completely cut off. There are also higher chances of an explosion if the fire involves a flammable gas. Therefore, if you own any industrial unit that may involve class B fire hazard threats, it is essential to be equipped with the right fire extinguishers and fire suppression systems. It is highly recommended to opt for professional fire extinguisher services from licensed experts and ensure proper fire extinguisher maintenance from time-to-time for protection against any potential fire threats. 

How does a Class B fire extinguisher work? 

Class B fire extinguisher usually contains a carbon dioxide solution to quickly cut the fire’s oxygen supply and instantly smother the flames. It sprays CO2 directly at the source of the fire, dispelling the heat and oxygen supply. Some fire extinguishers commonly use chemical solutions such as Monoammonium phosphate, sodium bicarbonate, etc., to effectively fight these types of fires. These chemicals can suffocate the flames instantly while inducing a chemical reaction that extinguishes the fire. 

The class B fire extinguishers are labeled with a square containing the letter "B" to indicate it is supposed to be used for Class B fires. 

If you have any further questions regarding class B fire extinguishers or you haven’t scheduled fire extinguisher inspection services in the last six months, contact our experts for assistance.