Total flooding systems operating with light foam are based upon the principle that in case of fire, the protected area is filled up with light foam, using the obvious feature that the fire danger of all the materials embedded in the foam is eliminated. The is no fire under the foam: there is no fresh supply of oxygen, there is no heat to initiate the fire, the fire cannot progress further. At the same time, the extinguishing material to be used is a small fraction of any other fire fighting material, water, foam or other extinguishing substance. Total protection.
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| The total flooding technology widely used in international practice has been introduced in Hungary by Tűzőr Ltd . and several references provide evidence, that what is good in the world market and features advanced technologies, can also be economically and safely applied in our country. |
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The light foam covering the protected area with a blanket of foam in 3-5 minutes, will extinguish the fire in the facility through the use of one-tenth of the water amount. With a foam production factor from 700 to 1,000 (1m 3 foam from 1 litre solution!) the light foams are unique with their efficiency in respect of economics and safety technology. The so-called total flooding systems with light-foam are of outstanding significance among the currently applied foam-extinguishing equipment in Hungary . The fire safety systems operating through flooding with light foam were introduced in Hungary by Tűzőr Ltd., primarily in the warehousing area. |
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In addition to the warehousing facilities, other areas can also be protected with high efficiency:
- rooms with complicated air space
- cable tunnels
- rooms with high internal height
- space of extra high fire risk
- separate small workshops and spaces with high risk of fire
- logistics basis, warehouses
- high-level storage facilities used for warehousing hazardous materials
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Of the total flooding system operating with light foam also meeting the Hungarian and international specifications established over the past 10 years were designed and implemented in 95% by Tűzőr Ltd., and as a result we can establish our Company being the unchallenged market leader. |
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The total flooding systems operated with light foam may operate both in automatic and manual regime. The most frequently applied solution for generating the signal to start extinguishing is the fire alarm signal issued by the fire alarm system. However, the starting signal can also be produced as necessary, using other solutions (e.g. pilot systems).
In order to avoid the unintended alarms and the resulting losses, the fire extinguishing system in general starts functioning after the lapse a programmable time, following the fire alarm. During the delay period, the staff on site can inhibit the extinguishing process, if they checked the situation carefully and found the extinguishing absolutely unnecessary. The extinguishing system operating with total flooding of light foam fills the protected section with foam to the full height. In the space filled in with foam, the foam removes oxygen, a necessary condition of fire, therefore, it is also superbly suitable for extinguishing fires of great depth.
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| The extinguishing system operating with total flooding of light foam minimises the secondary damage produced during extinguishing with the foam generated, opposite to other foam or water extinguishing technology, during which the multiple amount of the extinguishing material need to be supplied to the protected area. |
ADVANTAGES OF THE TOTAL FLOODING SYSTEM |
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| Tűzőr Ltd. offers now the third development generation over the past 8 years, based upon the most advanced international development achievements, to the full satisfaction of special requirements of customers. The scope of undertaking and services includes the design of fire safety concept, technical planning, licences to be obtained from the authorities and local governments, manufacture, installation, putting into use, functional tests and commissioning. Periodical testing and continuous maintenance are also undertaken. |
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The fire fighting technology with total flooding of light-foam is the optimum solution in many cases. This is made significant by the extinguishing safety (as no fire burns under the foam) and the favourable investment costs, furthermore the adjustment to the mechanised warehousing technology and to premises of complicated spatial system, with considerable hidden areas.
The slight additional costs of the light-foam extinguishing technology also represent a satisfactory attraction for the Investors. |
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Parameters |
Installed powder extinguishing systems |
Water sprinkler systems |
Installed gas extinguishing systems |
Total flooding system with light foam |
reliability |
risk of rekindling |
satisfactory |
good |
excellent |
secondary damage |
considerable powder pollution |
considerable wetting |
nil |
minimum wetting |
safety of staff staying in the fire area |
satisfactory |
good |
can be used only after the evacuation of the staff |
minimum danger |
environmental aspects |
complicated cleaning, dust pollution |
large volume of polluted water |
ozone shield damage, global warming |
small volume of foam solution, friendly to the environment |
possibility of automation |
complicated |
good |
evacuation of persons |
bad - good |
cost of implementation (100 units:
light foam) |
cannot be compared |
150-200 |
depending on the extinguishing gas 400 |
100 |
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The total flooding systems with light foam can be started automatically and also by manual operation. In automatic operation the starting possibility can also be initiated by electronic or pneumatic pilot signal.
Summary of advantages of the total flooding system:
- excellent reliability
- the damage due to the false alarm can be eliminated
- minimum risk of residence in the room
- optimum installation cost
- low load on environment
- insignificant maintenance demand
- low cost of operation
- protection of equipment and materials avoiding
fire and water damage
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REGULATION, STANDARDS, FIRE SAFETY |
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The Hungarian regulations primarily concentrate on the extinguishing technology of combustible liquids in the field of equipment extinguishing with foam. However, the international literature already deals with the total flooding with light foam systems as separate units.
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In the regulation perhaps the really key guideline is provided by the American standard NFPA 11/A, which ensures the integration of experience in the regulatory system through continuous upgrading, however, in the European field VdS provides a very key role also in the future.
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| The EURONORM is being elaborated now. |
| Accession to the European Union may mean a change in the Hungarian relations, which may lead to the further enlargement and review according to structure and contents of the single regulation applicable at present to installed fire extinguishing equipment, i.e. the Decree No. 2/2002 (I.23.) of the Ministry of Interior. In addition to the full satisfaction of the local requirements, Tűzőr Ltd. implements its systems according to the international regulations, in full compliance with the demands of the Customers. |
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