What do you mean by 1% 3% & 6% terminology used for foam concentrate?

What do you mean by 1% 3% & 6% terminology used for foam concentrate?

Normal figures shown are 1%, 2%, 3% or 6% or a combination of 1% and 3%, 3% and 3%, or 3% and 6%. If the container of foam concentrate has 3% shown, it means that for every 100 gallons of foam solution required, 3 gallons of the foam concentrate must be used in the solution with the balance being 97 gallons of water.

What are the three types of foam concentrate?

This standard amalgamates first three parts, namely, Part 1 Protein foam concentrate, Part 2 Aqueous film forming foam (AFFF) and Part 3 Fluoro-protein foam. The purpose of all the three types is same, that is, for use in Fire Extinguishing agent for Class ‘A’ and ‘B’ flammable liquid (Hydrocarbons) fires.

What is class A foam concentrate?

Class A foam concentrates are specifically designed to combat fires involving ordinary combustible materials, like wood, paper, coal, rubber, and plastic by making water more effective. The concentrates reduce the surface tension of water providing superior wetting and penetrating characteristics.

How do you calculate foam solution?

The formula for calculating the needed foam concentrate at a flammable liquid release is as follows: Area X Critical Application Rate (CAR) X Eduction Rate (ER) X 15 = Foam Concentrate Needed.

What foams Cannot be used with fog nozzles?

Fluoroprotein foams are a derivative of protein foams. Fluoroprotein foams have fluorochemical surfactants added. They are intended for use on hydrocarbon fuels and selected oxygenated fuels. They must be properly aspirated and should not be used with non-air aspirating fog nozzles.

What is the expansion ratio for low expansion foam?

Low expansion foams have an expansion ratio of about 1:10, which means that 1 litre of foam liquid solution forms 10 litres of finished foam, highly flowable and durable.

What is the difference between Class A and Class B foam?

There are many different types of foam for firefighting: Class A foam is used for combustibles, structural fires and wildfires; Class B foam is used for ignitable liquids, like gasoline and diesel; and polar solvent foams help extinguish alcohol-based liquids and alcohol-type fuels.

How is foam concentrate calculated?

What is the formula of foam?

Other names – Ethylene glycol copolymer

How is foam application rate calculated?

In order to understand the simple formula, it is important to know the components in a foam formula. The formula for calculating the needed foam concentrate at a flammable liquid release is as follows: Area X Critical Application Rate (CAR) X Eduction Rate (ER) X 15 = Foam Concentrate Needed.