A fire extinguisher should bear the seal of an independent testing laboratory. It should also be labeled as to the type of fire it is intended to extinguish. The extinguisher must be large enough to put out the fire. Most portable extinguishers discharge completely in as few as eight seconds.
Which is the safety device in fire extinguisher?
A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations.
|Fuel/heat source||Flammable liquids|
What are the purpose of fire extinguishers?
Fire requires fuel, heat and oxygen to burn. Fire extinguishers apply an agent that will cool burning heat, smother fuel or remove oxygen so the fire cannot continue to burn. A portable fire extinguisher can quickly control a small fire if applied by an individual properly trained.
What are the 4 classes of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
Are fire extinguishers toxic?
The dry powder in ABC fire extinguishers is non-toxic but can cause skin irritation. … The chemicals used vary by model and manufacturer but if they sprayed toxic chemicals they’d never be licensed for home use.
Do we need fire extinguishers?
Yes, provided you know when and how to use it. Fire extinguishers can be a small but important part of the home fire safety plan. They can save lives and property by putting out a small fire or suppressing it until the fire department arrives. … You’ll also want to make sure that the fire is confined to one area.
Do fire extinguishers expire?
Even if there’s no expiration date, it won’t last forever. Manufacturers say most extinguishers should work for 5 to 15 years, but you might not know if you got yours three years ago or 13. … If it falls anywhere else, the extinguisher is unreliable and should be serviced or replaced.