Foam Fire Extinguishers also known AFFF. AFFF stands for Aqueous Film Forming Foam. To conform to BS EN3 a foam extinguisher colour is red with a cream label saying ‘foam’. Older foam fire extinguishers are completely cream, but there are very few of these still in service.
Foam Fire Extinguishers also known AFFF. AFFF stands for Aqueous Film Forming Foam. To conform to BS EN3 a foam extinguisher colour is red with a cream label saying ‘foam’. Older foam fire extinguishers are completely cream, but there are very few of these still in service.
Foam fire extinguishers are used for Class A Fires (solids such as wood or paper) and Class B (flammable liquids). Foam fire extinguishers work by building a non-combustible chemical ‘seal’ that cuts off a fire’s oxygen supply and the liquid in the foam cools the fire. When servicing a foam extinguisher, we pressurise the extinguisher with nitrogen which also displaces the oxygen. Foam extinguishers are not recommended for use close to live electrical appliances, because they contain water.