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Foam Fire Suppression

Foam fire suppression refers to the use of foam-based systems to control and extinguish fires. This method is particularly effective for flammable liquid fires, where the use of water alone may be less efficient due to the liquids’ characteristics. Firefighting foam works by forming a blanket over the flammable liquid, preventing the release of vapours and suppressing the combustion process. There are different types of foam fire suppression systems designed for various applications.

  1. Types of Foam:
    • Aqueous Film-Forming Foam (AFFF): AFFF is a widely used foam type that creates a thin film on the surface of the flammable liquid, preventing the escape of vapours and suppressing the fire.
    • Protein Foam: Protein-based foams are effective for fires involving polar solvents such as alcohol and ketones.
    • Alcohol-Resistant Foam (AR-AFFF): AR-AFFF is designed specifically for fires involving alcohol-based liquids.
  2. Applications:
    • Flammable Liquid Storage: Foam fire suppression systems are commonly used in facilities where large quantities of flammable liquids are stored, such as petrochemical plants, refineries, and fuel storage depots.
    • Aviation: Foam is used in airport hangars to protect aircraft and facilities from the fire hazards associated with aviation fuel.
    • Chemical Process Industries: Foam is employed in chemical manufacturing and processing facilities where the risk of flammable liquid fires is high.
    • Fueling Stations: Foam systems are installed in areas where fuel is transferred, such as fuel loading racks at gas stations and fuel terminals.
  3. System Components:
    • Foam Concentrate: The concentrated foam-forming liquid that, when mixed with water, produces foam.
    • Proportioning System: The system that accurately mixes the foam concentrate with water to create the foam solution.
    • Foam Generators or Nozzles: Devices that discharge the foam onto the fire.
    • Storage Tanks: Containers for storing foam concentrate and water.
    • Control System: Mechanisms for activating and controlling the foam discharge.
  4. Operation:
    • Foam fire suppression systems can be activated manually or automatically, often through heat or fire detection systems.
    • Once activated, the system releases the foam concentrate, which mixes with water and is then discharged onto the fire using foam generators or nozzles.
  5. Effectiveness:
    • Foam is highly effective in suppressing flammable liquid fires by forming a protective layer that separates the fuel from the air, cutting off the fire’s oxygen supply.
    • It also helps cool the fuel surface, reducing the risk of re-ignition.
  6. Environmental Considerations:
    • Some foam formulations, especially those containing certain chemicals, may have environmental concerns. As a result, there is ongoing research into more environmentally friendly foam options.
  7. Regulations and Standards:
    • Foam fire suppression systems must comply with industry-specific regulations and standards. Regular testing, maintenance, and inspections are typically required to ensure the system’s reliability.

Foam fire suppression is a critical tool in fire protection, especially in situations where flammable liquids pose a significant risk. The choice of foam type and system design depends on the specific application and the nature of the fire hazards present in a particular environment.

Founded in 1982, Tecpro Australia has developed an enviable reputation for providing reliable and cost-effective technical solutions for a vast range of industrial applications. Products suitable for foam fire suppression application include:
* Spray Nozzles
* Hose Guns & Foaming Units
* Valves, Filters & Accessories
* Design, Fabrication & Consulting

Our customers benefit from the following:
• Access to a broad range of quality solutions and technical advice
• Local sales support and customer service with a focus on integrity and honesty
• Over 30 years’ experience of providing expertise and solutions
• Quality European manufactured products.

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