TUNNEL AND BLAST DAMPERS
…no Pressure too Great!
Around the world the tunneling sector is growing rapidly due to accelerated advancements in the technology, falling costs and new disruptors to the space. The acceleration of engineered and commissioned underground projects poses unique fire and smoke safety challenges.
Good ventilation is crucial for underground projects to maintain air for humans and HVAC equipment. This is crucial for emergencies and day to day operating and maintenance.
Tunnel dampers preserve volumetric airflow for underground projects in order to maintain air quality to meet operating standards. If a fire event was to occur the removal of smoke and toxic gases is facilitated via tunnel dampers giving emergency operations time and safe areas to conduct their tasks.
Danger and damage is minimised with fire dampers preventing flames from spreading through duct work.
STRUCTURE AND DIMENSIONS
Flamgard Calidair’s tunnel dampers are rigidly designed and are used to regulate the airflow in transit tunnels. They ensure that the air that is circulating through the tunnel is safe for passenger transit, without excessive build up of exhaust gases. In normal conditions, tunnel dampers control the volumetric air flow in a transit tunnel.
In emergency fire conditions, it is essential that the dampers are there not only for ventilation, but to regulate the fire and the associated smoke and hot gases. Fires in tunnels generate severe smoke which, if not reliably ventilated, could cause those in the tunnel to suffer the life-threatening effects of smoke inhalation. Tunnel dampers can be used in emergency conditions to operate to extract these toxic fumes and smoke away from the critical area as well as providing a fire barrier when closed.