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extinguishing system’s sprinkler heads are pre flooded – until then they are dry. If the heat cables also detect a rise in temperature in the room, the extinguishing system triggers. The high pressure mist extinguishing system
therefore uses a two fold safety mechanism. After all, damage to the permanently installed organ and the ‘white skin’ responsible for the good acoustics in the hall is inevitable because of water contact. As it is not only the hall’s structural design that is complex, but also its floor plan and the interlinking systems within the scope of the fire protection concept, the fire service responsible for the concert hall has to conduct regular emergency drills. They are assisted by clear maps and information about the exact position of the individual systems – and even the individual air sampling points of the Wagner system
Katharina Bengsch is an editor at Wagner Group. For more information, view page 5
Discussing the installation, he noted that ‘air sampling smoke detectors are an ideal solution for the halls’, adding that to date, they have worked error free. Furthermore, he believed that no longer using point type detectors in the foyer areas was ‘exactly the right decision’, as unlike point type detectors, the sampling points of the units can be almost invisibly integrated in walls and ceilings, in keeping with one of the architectural firm’s mandatory stipulations.
Further requirements
The requirement to use Titanus air sampling smoke detectors for earliest smoke detection resulted from both the structural conditions and the architectural firm’s specifications that the detectors had to be installed almost invisibly. As a result, air sampling smoke detectors were the only viable option for the Great Hall as this has a height of 25m, while the system itself covers approximately 40 rooms including the Great and Little Halls, the quay studio, foyer areas and technical rooms. In total, the gross floor area of the concert space covered is 4,000m2
, with 3,300m2 of
this the Great Hall seating 2,100 people, and the remaining 440m2
the Little Hall with 550
seats. Together with heat sensor cables in the floor of the auditorium, the units control a high pressure mist extinguishing system for fire suppression, so that if a fire is detected, the
50 APRIL 2018
www.frmjournal.com
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