What is the symbol for a Class B fire?
red square
What do the letters A B and C mean on a fire extinguisher?
The letters indicate the type material the extinguisher can be used on; A for combustible solids (paper, wood and trash), B for combustible liquids (gasoline, oil, acetone) and C for electrical equipment. The number before the A indicates the size of a wood panel that can be extinguished,.
What is B type fire?
As alluded to above, Class B fires are ones in which flammable liquids and/or gases become involved. They are the fuel source in the fire triangle (fuel, heat, oxygen + chemical reaction). Flammable liquids include gasoline, diesel fuel, oils, tars, petroleum greases, solvents, alcohols, and oil-based paints.
How do you fight Class B 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. Smothering the fire with bicarbonate (baking soda) or potassium carbonate will also work.
What causes Class B fire?
Class B – fires caused by flammable liquids such as paint, turpentine or petrol among others. Class C – fires caused by flammable gases including methane, butane or hydrogen among others. Class D – fires caused by combustible metals including potassium, aluminium or magnesium among others.
What type of fire is put out by a 5 B?
Carbon Dioxide (CO2) extinguishers rated from 5:B:C to 10B:C. Buckeye’s 120B:C “Purple K” dry chemical extinguisher, designed to tackle even the most serious flammable liquid fires.
What is a commonly used method of extinguishing Class B fires?
There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering.
What is a three dimensional fire?
A three-dimensional fire is a liquid-fuel fire in which the fuel is being discharged from an elevated or pressurized source, creating a pool of fuel on a lower surface. Foam is not effective at controlling three-dimensional flowing fires.
What is a 2 dimensional fire?
The two- dimensional Fire code is a two-dimensional cyclic code designed for single twodimensional burst correction.
What is the best way to quickly knock down a three-dimensional fire?
Dry chemical is the most effective extinguishing agent for pressurized liquid and three-dimensional flowing liquid fires. They are also preferred for many large spill fires where obstacles are within the spill area.
Which is an indicator of possible structural collapse?
Collapse indicators include: Previous fire damage. Windows, doors, floors and stairs out of level. Sagging wooden floors.