How big of a fire can a fire extinguisher handle?
For each B, the extinguisher can stop one square foot of Class B fires. A 10B extinguisher can stop 10 square feet of Class B fire, a 20B extinguisher can stop 20 square feet, and so on.
Which stage should a fire be tackled with a fire extinguisher?
Remember that fire extinguishers are only for fighting a fire in its very early stages. Never tackle a fire if it is starting to spread (of has spread) to other items in the room or if the room is filling with smoke.
What is fire rating of fire extinguisher?
Fire extinguishers carry classification ratings in accordance with the type of fires they have been designed to extinguish. The ratings are A, B, C , D and K. The ratings on fire extinguishers allows users to quickly identify the type of fire which an extinguisher will be most effective for.
When attempting to extinguish a fire you should use a maximum of?
The correct answer is C, 8 feet. According to FEMA (Federal Emergency Management Agency), it’s recommended that you stand 8 feet away when extinguishing a fire. The correct answer is D, Pull, Aim, Squeeze, Sweep.
What does 4A 80B C mean?
Tall Buckeye ABC Dry Chemical Extinguisher 4A:80B:C is designed for use on Class A fires (ordinary combustibles), Class B fires (flammable liquids and gases), and Class C fires (energized electrical equipment). … A wall bracket is included with each extinguisher.
What are the sizes of fire extinguishers?
The size of a fire extinguisher indicates the amount of extinguishing agent it holds and is most often measured in pounds. Sizes can range from as small as 2.5 lb. to as large as 350 lb.
Common fire extinguisher sizes and their approximate weight
- 2-A:10B:C – 4 lb.
- 3-A:40B:C – 5 lb.
- 4-A:60B:C – 10 lb.
- 10-A:80B:C – 20 lb.
How many extinguishers should you use on a fire before leaving the building?
How many fire extinguishers do I need? The regulations state that a minimum of two Class A fire extinguishers on every floor of a building are needed, unless the premises are very small, in which case one may be acceptable.
What is stop drop and roll used for?
“Stop, drop, and roll” is used when clothing catches fire. Teach students to stay away from fire.
What is fire rating 21B?
Fire Rating. 8B. 13B. 21B. Suitable for Fire class B,C.
What is a 2A rated fire extinguisher?
Fire Extinguisher Size Ratings
The Class A size rating represents the water equivalency. Each number represents 1 ¼ gallons of water. For instance, 2A means the extinguisher is just as effective as 2 ½ gallons of water. 4A is equivalent to 5 gallons of water.
What does a rating of 40 on a Class B extinguisher mean?
What does a rating of 40 on a class B extinguisher mean? Sufficient extinguishing power for 40 square feet of burning fuel.
When using foam a Class B fire is extinguished by?
Foam extinguishes Class A Fires by cooling the burning material and removing the heat from the combustion triangle. Foam extinguishes Class B Fires by covering the flammable liquid with a foam blanket, thus cutting off the oxygen supply from the combustion process.
When a fire is too large to fight on your way out of the building you should?
LEAVE THE BUILDING. Try to rescue others only if you can do so safely. Move away from the building and out of the way of the fire department. Don’t go back into the building until the fire department says it is safe to do so.
When attempting to extinguish a Class A or Class B fire in an open area which of the following should you avoid?
When fighting a Class B fire, do not use water. In many cases, water will only spread the fuel around and create more fire. To extinguish a Class B fire, you want to cut off the oxygen. You can use carbon dioxide gas to dilute the oxygen available and stop the burning.