Another popular type of fire etingushers is the foam type.
Disadvantages of foam fire extinguisher.
ΓΌ smaller extinguisher the foam extinguishers are a lot smaller than their standard water equivalents but carry the same class a fire rating.
Advantages disadvantages of foam fire extinguishers.
For example a 6lt foam has the extinguishing capability of a 9lt water.
You can see this type of extinguisher all over buildings such as office schools and other public places.
Non toxic non damaging to most materials largely safe if accidentally used on electrical fires although this is not recommended designed to prevent the re ignition fires lighter in weight than the equivalent water extinguisher.
Foam suitable for class a and b fires class a combustible solids paper wood class b flammable liquids petrol diesel spirits paint pros higher a rating than water so more effective on combustible solids.
How to use a foam fire extinguisher.
It is advised to not use foam extinguishers for class f fires.
Therefore should not be used on class e fires.
It is among the simplest and easiest fire extinguesher to operat.
1 according to the type of fire can be divided into abc dry powder fire extinguisher and bc dry powder fire extinguisher a is a solid fire extinguisher b is a liquid fire extinguisher c is a gas fire extinguisher abc dry powder fire extinguisher can use the above three types of fire bc can only be used for liquid fire and gas fires.
A foam fire extinguisher is mostly water.
Disadvantages can only be used once cannot erase electric fire cannot remove class a c and d fire if the mixing of the chemical is incorrect the foam cannot effectively remove the fire not suitable for use with dry powder fire extinguisher as the powder breaks the foam.
The aqueous solution is corrosive and requires to be cleaned after used particularly on painted surfaces.
Foam discharge is easier to.
Typically a 3litre foam will weigh 70 less than a 9litre water but both have a 13a rating.
Which emitted foam base in order to fight innormous daner of uncontroable fire conditions.