Today, Thursday, April 28, 2011, AlpTransit Gotthard Ltd. and the TLT-Turbo / ABB Consortium signed the work contract for the operational ventilation of the Gotthard Base Tunnel.
The contract for "Lot C – Operational Ventilation Gotthard Base Tunnel" is worth approximately 40 million Swiss francs. The TLT-Turbo / ABB Consortium is tasked with planning the execution and developing the operational ventilation as well as manufacturing the systems and installing them in the multifunction stations and ventilation centres at Sedrun and Faido.
Core elements of the work are the construction and installation of the air supply and extractor fans in the ventilation centres at Faido and Sedrun. In case of fire, these fans assure an adequate supply of fresh air to the emergency-stop stations as well as targeted extraction of smoke from the tube where the incident has occurred, thereby ensuring the safety of passengers and personnel. The fans will also be used by SFR for ventilation during maintenance work.
Work on installing the operational ventilation will start in mid-2012 and complete in spring 2014. Subsequently, during commissioning, the operational ventilation will be integrated into the railway tunnel control systems.