All extinguishers are rated as to the size of fire they are designed to handle. The rating is a number from 1 to 40 for a “Class A” fire, and 1 to 640 for a “Class B” fire. For example, a 20-B rated extinguisher can handle a flammable liquid fire twice as big as a 10-B extinguisher; the rating will appear on the label.
How much fire can an extinguisher put out?
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.
Can fire extinguishers be used on large fires?
Portable extinguishers are useful for putting out small fires; however they are not effective against large, spreading fires. In these situations, doors should be closed to contain the fire.
What is the maximum size of a fire that can be tackled using a fire extinguisher?
If the fire involves any flammable solvents, covers more than 60 square feet, or cannot be reached from a standing position, evacuate immediately and call the Fire Brigade.
How much area does a fire extinguisher cover?
1.1 – from 5-B to 80-B – indicate how many square feet of coverage that the extinguisher can provide. For each type of hazard, extinguishers with lower minimum ratings must be placed no more than 30 feet away, while extinguishers with higher minimum ratings may be as far as 50 feet away.
What is the best defense against fire?
As always, the best defense against a fire is to be prepared. Take a moment to look at your fire extinguisher.
What does 2A 10BC mean?
A fire extinguisher that is rated 2A:10 BC means it has a fire fighting capacity equivalent to: 2.5 Gallons of Water and 10 Square Feet for a BC Type Fire.
When should you not use a fire extinguisher?
When do you not use a fire extinguisher?
- The fire is too big or would require more than one fire extinguisher.
- Fires involving escaping gases, high voltage electrics.
- The evacuation route is obstructed.
- There are high levels of smoke.
- The area is too hot.
- You have not been trained.
What is the main cause of death in fire?
The characteristic biphasic distribution of carboxyhemoglobin in fire victims together with other observations suggest that the principal causes of death are carbon monoxide followed by carbon dioxide poisoning and/or oxygen deficiency, while the influence of heat is considered to be of minor importance.
What is the golden rule for tackling a fire?
When considering whether to tackle a small fire yourself if you discover one, always bear in mind the golden rule of fire safety; If in doubt, get out, stay out and call the Fire Brigade immediately.
What is a Type D fire?
Class D fires only involving combustible metals – magnesium, sodium (spills and in depth), potassium, sodium-potassium alloys uranium, and powdered aluminum.
Where should a fire extinguisher be located?
Extinguishers should be placed where they are readily accessible in the event of a fire, which typically includes normal paths of travel.
How many fire extinguishers do you need per square foot?
(a) Fire Extinguishers and Small Hose Lines. (1) A fire extinguisher, rated not less than 2A, shall be provided for each 3,000 square feet of the floor area, or fraction thereof. Where the floor area is less than 3,000 square feet at least one extinguisher shall be provided.
How do you calculate fire extinguisher requirements?
To calculate how many 13A extinguishers are required, divide the floor area by 200, and round up. Example: floor area 1300 square metres: 1300 ÷ 200 = 6.5 Round up to 7 7 x 13A water based extinguishers.