ABC type fire extinguishers will be printed as “powder” over a blue color rectangle, below the rectangle it will be written as “ABC powder”. As the name says this has been created to extinguish Class – A, B, C fires which involves solid/liquid/ gas.
This powder is thermal blast which cools down the flames which stops burning.
As it is non- conductive in nature, it is suitable for extinguishing electrical fires but they cannot fully penetrate the spaces easily, thus the fire may re-ignite.
NOTE: ABC Fire Extinguisher should not be applied on class F fire like domestic chip.
The negative side of ABC powder extinguishers, it might cause inhalation problem when used in close space
This also leave residue which will be difficult to clean and it may cause damage to electronic appliances, carpets, furnishings etc.
These kinds of fire extinguishers are uniquely identified by its hose. They have the words printed “powder” in white text within a blue rectangle. But they should not be confused with ABC powder fire extinguisher, and they will indicate M28 or L2 below the rectangle.
The M28 and L2 are unique type of fire extinguishers which are created to tackle fire with D class fire, which has combustible materials in the form of powder or swarf. This has lithium, sodium, aluminum or magnesium.
Example: This extinguisher has low velocity application in order to make sure, that L2 or M28 powder is gently applied and effectively on burning materials to avoid swarf from spreading more.
When this form of fire extinguisher is sprayed first, it forms a crust and insulates the metal thus it prevent access with other combustible substances and cools down fire by preventing oxygen to react again with metal.
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