In case of extinguishing the substances such as oils, alcohols, chemicals, gasoline, paints, etc. foam systems are applied due to their high effectivity provided by covering the designed area with a layer of foam . Foam is made by mixing of the foaming agent AFFF or AR-AFFF and water. A suitable thickness of the foam layer cuts off the air and lowers the temperature of the extinguished material.
The main equipment of the foam system tanks are: foaming agent, proportioner, water and foam monitors or foam generators and water feed supply as well as in the sprinkler system.