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Products

TFEX Foam Fatale

Foam fatale is a product of Tfex, Hungary . Netsach Nig Ltd has secured a sales authorization for the supply and installation of the Foam Fatale Fire Protection system in Nigeria.

TFEX Foam Fatale is an automatic and autonomous Self Expanding Foam system which responds immediately after the ignition of  fire, and does not require any external supply of water or energy to operate.

It is considered to be representative of the Best Available Technology today.

The fire surface is totally covered in maximum two minutes from the ignition, thus there is no time for the development of environmentally dangerous smoke or soot, and a major part of the stored material is also saved.

Description of the new high performance fixed system
A method has been developed which eliminates the limitations of conventional systems. The concept of this new system is that perfectly prepared foam is stored under pressure in a vessel. On release of the foam from the vessel, expanded foam is formed at the location where the expansion takes place.
The patented system is called “Self-Expanding Foam” system, abbreviated as SEF®.

Preparation of foam

• Self Expanding Foam is prepared well in advance under calm and controlled conditions.
• This eliminates the probability of an off-spec composition of the foam.
• The pre-mixed foam is stored in a pressure vessel until the moment of use.
• The foam remains homogenous for at least 10 years, as experience has shown.

Dimensions of SEF vessels

• Static SEF® vessels can be very large. The maximum quantity of stored foam is determined only by the mechanical manufacturing limitations.

• The maximum size of vessels on vehicles is determined by size and weight. The limiting factor is most probably the maximum allowable dimension of the vehicle as well as the maximum allowable axle load for the road system to be used.
  Let’s the foam expand

• On release of the SEF® the pressurized foam will expand. This in turn eliminates the need for aspirating devices.

• The release rate of the foam from the vessel is not bound by conventional limitations, like aspirating devices and such.

• The expansion ratio of the foam is independent from the flow rate; the pressure in the foam vessel is the only factor determining the expansion.
  
  
  Operation of the system

• The operation of the whole system is extremely simple. All that is required is to open the isolation valve between the pressurised SEF® storage vessel and the foam application
  device.

• The simplicity eliminates the need for specialists to operate the system successfully.

Advantages of the SEF® system over a conventional system

• Requires no manpower resources to set up and operate at the scene of the fire.
• Is so simple that mistakes are unlikely.
• The foam is mixed under calm and controlled conditions, and is 100% consistent.
• Does not require any aspirating devices.
• Does have an unlimited flow range.
• Produces optimum quality foam at all flow rates.
• Has only a few critical elements requiring regular inspection.
• Requires considerably lower capital investment.
• Requires considerably lower maintenance effort and cost.

Applications where the SEF® concept can be used

• Hydrocarbon storage tank fire fighting by superintensive foam flooding
• New concept airport crash tenders
• First intervention vehicles
• Skid mounted units
• Fixed installations for restaurant cookers, fuel storage, underground fuel bunkers,
• Portable and wheeled fire extinguishers.
• SEF® tanks on vehicles, replacing or complementing conventional fire fighting vehicles.
• Foam supply on sites handling flammable liquids that have no firewater system.
• Foam supply for road car loading facilities handling flammable liquids.

Tank fire extinguishing by superintensive foam flooding

• FoamFatal™ is a revolutionary new tank fire extinguishing technology, using a very high foam application rate. It is called Superintensive Foam Flooding (SFF)

• The extremely high foam flow rate is provided through the new foam application device, which accommodates the very large foam flow and prevents excessive velocities in the nozzle. It is called Continuous Linear Nozzle (CLN). The CLN provides an ideal curtain-like foam application pattern, thus providing substantial and continuous cooling of the tank wall.

• One of the advantages of the Self Expanding Foam concept is that it has no release rate limitations. By combining the SEF®method with the newly developed high capacity CLN, it is easy to achieve the application rates of 20-40 litres/minute/square meter.

• The result of this combination is an extremely high efficient system. Tests carried out on a 500 m2 gasoline tank on fire repeatedly resulted in extinguishment in less than 40 seconds. The reliability of the system is very high; the valve is the only moving part in it.

• The SEF® storage vessel can be a stationary vessel located in the vicinity but at a safe distance from the hydrocarbon tank. An alternative option, requiring some intervention by manpower, can be a mobile SEF® storage vessel mounted on a truck.