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Check our videos and pictures of realizations on the following link
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As a very attractive touristic destination, the island of Cyprus undertook the restoration of its two airports. Largest of the 2, the airport of Larnaka will be established on more than 100 000 m² to accomodate 9 million travellers per year.
The generators of this new airport, provided and installed by the company Cummins France, will profit from a soundproofing carried out using SONIE BS splitters from F2A.
After a thorough acoustic study, the engineering team of F2A determined the system limiting the noise level to 80 dB(A) at 10 m upstream and downstream from the installation.
Thus, the dimensioned splitters are 5m high for a 200 mm thickness. In order to reinforce them to ensure a resistance to 2 times their weight, they consist of 2 parts fixed together by a piece of junction (U) of 1 m length. The framework is out of galvanised steel of 0,8 mm thickness.
Fixed thanks to slides directly on the built elements, approximatively 200 splitters of this type equipped the 6 buildings with genreators.
With an initial budget of 622 million euros, the two airports should be in service this autumn 2009.
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SONIE BS Splitters
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Water treatment plant of Marseille (France), Geolide
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December 2008
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As a real technological challenge, Geolide, the water and muds treatment plant of the town of Marseille (France) is today the vastest buried purification plant in the world.
Its ventilation network alone treats more than 250.000 m3 of air per hour. Thanks to its expertise, F2A has been able to provide to the installation company, Crudeli in Marseille, the acoustic and regulation equipment requested for the good performance of the complex.
Concerning acoustics, more than 300 SONIE BS splitters have equipped the rectangular silencers. Subjected to acid effluents, the splitters in contact with the foul air required a specific design: the shaped frame is out of aluminium and the coating out of glass fiber.
After 36 months of work and a budget of 165 million euros, the new Géolide purification plant is operational since the beginning of the year 2008.
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Maurice Lemaire Tunnel : MRS-T tunnel dampers
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September 2008
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As one of the longest road tunnels entirely installated on the french soil (nearly 7 km), the Maurice Lemaire tunnel, between Sainte-Marie-aux-Mines (68) and Lusse (88) is beeing renovated to match the standards.
Thus a parallel safety gallery has been dug in order to renovate the ventilation system : fresh air network and extraction.
In spite of important technical constraints (resistance up to 10 000 Pa) for all smoke dampers, F2A has been able to bring a performant solution in conformity to the 2000-63 french circular in terms of fire resistance.
Tests carried out at the CETIAT in the presence of the company and project supervisor approved the MRS-T tunnel damper . These tests were related to the leak flow, the manoeuvrability of the damper and the measurement of the cycle time under pressure conditions from 0 to 10 000 Pa.
Thus, F2A has manufactured 68 MRS-T smoke dampers and 16 fresh air dampers for the tunnel's safety gallery. In complement, more than 250 AT backdraught dampers have been installed in the branches and the sub-stations.
With a projected budget of 180 millions euros, the renovation of this tunnel should be completed this autumn.
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