What is the percentage of AFFF foam?
AFFF is used in the U.S. military, and in most civilian applications worldwide, as either a 3% or a 6% concentrate. The numbers refer to the percentage of the foam concentrate mixed with either fresh or sea water by a proportioning nozzle.
What does 3% AFFF mean?
aqueous film forming foam concentrate
Fomtec AFFF 3% is an aqueous film forming foam concentrate (AFFF) consisting of a blend of fluorocarbon-, hydrocarbon surfactants and various solvents and stabilisers. Only C6 Pure fluorosurfactants are used in Fomtec AFFF-formulations.
What does AFFF foam stand for?
Aqueous film forming foam
Aqueous film forming foam (AFFF, or alcohol resistant AR-AFFF) is a highly effective foam used for fighting high-hazard flammable liquid fires. AFFF is usually created by combining foaming agents with fluorinated surfactants.
How do you calculate foam?
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.
What do you mean by 6% foam concentrate?
This high quality AFFF (aqueous film forming foam) concentrate is supplied in a 20lt drum. The concentrate requires 94 parts water to 6 parts concentrate. The foam concentrate is ideal for refilling foam / air fire extinguishers and for use with fire hoses (with appropriate foam branch equipment).
What is percentage of foam?
Since foam contains 94–97 percent water, it is not safe for use on this type of fire. In some cases, foam concentrate is even more conductive than water. Class C fires can be extinguished using nonconductive extinguishing agents such as a dry chemical, carbon dioxide (CO2), or halon.
Is AFFF banned?
The military plans to phase out the use of firefighting foam containing PFOAs by October 2024, as directed in the National Defense Authorization Act of 2020. However, this deadline is still two and a half years away, leaving little protection for the people who are exposed in the meantime.
Does Chemguard contain PFAS?
This foam is also oleophobic (oil shedding) which makes it particularly well suited for sub-surface injection near the base of a Class-B flammable liquid storage tank. Fluoroprotein Foam is produced using PFAS. The PFAS chemicals are not PFOA or PFOS.
How is firefighting foam calculated?
NFPA recommended application rate for film-forming type foams equals 0.1 gpm (foam solution) per square foot of fire with a MINIMUM RUN TIME OF 15 MINUTES. For ethanol-blended fuels, start at 0.2 gpm/ sqft. foam available for securing the flame. 0.10 gpm/ sqft X 2,000 sqft = 200 gpm of foam solution required.
Is AFFF still in use?
AFFF is still in use today. Flash forward to 2020, and we now know that the same chemicals that give these firefighting foams their unique properties have become a major global source of drinking water contamination.
Is PFAS still used in firefighting foam?
While every state has its own rules and regulations: California banned PFAS in food packaging and paper straws. The state has also passed legislation banning the use of PFAS in firefighting foams starting in 2028.
What is AFFF foam made of?
Synthetic foams Aqueous film forming foams (AFFF) are water-based and frequently contain hydrocarbon-based surfactant such as sodium alkyl sulfate, and fluorosurfactant, such as fluorotelomers, perfluorooctanoic acid (PFOA), or perfluorooctanesulfonic acid (PFOS).