Due to environmental concerns and regulatory changes our industry is reducing the use of PFAS based foam concentrates such as AFFF in fixed fire protection systems. One of the reasons relates to its ability to biodegrade and its persistence in the environment. Fluorine free foams offer a more environmentally responsible alternative.
This change is proving challenging from a fire performance perspective. Users, AHJ’s and designers should be aware of the need to use products tested for their intended purpose. One such application is foam-sprinkler systems.
Sprinkler applications are especially challenging for any foam due to the very low operating pressure and expansion. Applying foam through a sprinkler head is a very forceful application method and requires foam that can handle direct application and partial submersion into the fuel without losing its fire performance and burn-back resistance.
Foams that shall be regarded as suitable for sprinkler applications shall also be able to withstand a limited time of water deluge directly onto the foam blanket without losing its burn-back properties.
The European foam concentrate standard for use in low expansion applications is EN1568 Part 3 & Part 4. This standard does not take into account the real life discharge devices used in fixed systems. Experience tells us that foams, working with different discharge devices at different discharge parameters will give differing results. This was also confirmed in recent testing conducted by the NFPA Research Foundation (Evaluation of the fire protection effectiveness of fluorine free firefighting foams).
Independent third party approvals bodies such as FM and UL have robust test standards (FM5130 and UL162) that test a specific foam with specific discharge devices in a manufacturer-defined range of operation. This means that a system designer or AHJ has a clear guide on what has been proven to work in the real world.
Viking is pleased to introduce the first FM Approved fluorine free fixed foam system for Hydrocarbon and Polar Solvent applications. This system approval is initially focused at non-aspirated sprinkler discharge devices for use in closed or open head installations such as warehouses, chemical manufacturing areas, loading racks or aircraft hangars for example.
Fluorine free foams, often referred to as SFFF (Synthetic Fluorine Free Foam), foams are predominantly synthetic-based foams based on surfactant blends and in many cases the use of polysaccharides. Fomtec offers a large range of both synthetic-based and protein-based fluorine free foam concentrates.
During a fire, foam extinguishing systems distribute large-scale foam blankets via foam monitors, sprinklers or nozzles. The foam is applied to the burning material, extinguishes the fire and serves as a deterrent against reignition. Foam extinguishing systems are suitable for protecting high-risk areas, e.g. due to flammable liquids or plastics. The adjustable low to extremely high foaming option offers an optimum extinguishing effect for every type of risk.
With a versatile foaming agent range, Minimax offers safe and flexible application. Perfectly aligned components are supplied in line with the individual needs of clients and according to respective fire protection requirements.
Our trained designers are ready to work with you to determine the best possible fixed foam system including foam concentrate, foam storage tanks, foam proportioning device and foam discharge device.
LPG Fire Australia is a dedicated team of fire protection professionals across Australia with a combined 100 years experience in Special Hazard fire protection systems
Our vision is to be a leading provider of quality solutions for Special Hazards fire risks across all major industry sectors in the Australian and New Zealand markets.