Engineering the Euro Tunnel

Since the Channel Tunnel was the first of its sort in the transport industry, it required a detailed study to achieve essential safety requirements. A detailed qualitative and a quantitative analysis, involving experts from all fields, were carried out regarding the complete project. The studies involved tests on fire detection equipment, smoke control, evacuation procedures, and several other systems involved in the venture. Multiple communication systems were installed for contact between the railway control center and the trains, and between the passengers and the shuttle crew. All the systems were thoroughly integrated, and checked for effectiveness. Communications are an important safety characteristic when operating under such unique conditions.

In 1996, one train going towards France caught fire and the accident inflicted heavy damage to the services of the tunnel. About 500 meter of the track had to be replaced. In 2008, another fire accident occurred and it cost 60 million pounds to repair the tunnel. It remained closed down for quite some time and safety features of the tunnel were criticized by people all over the world. These two accidents forced the authorities on both sides to improve their safety arrangements.

The Chunnel Tunnel incorporates advanced safety features, some of them are listed here.

Flood prevention systems are installed in and outside the tunnel, quick water drainage ensures uninterrupted transportation.Remotely controlled pressurized butterfly valves link the two running tunnels with each other ensuring safe passage and avoid risks of closing down. The service tunnel supports normal ventilation system, which ensures normal air pressure in the running tunnel. The traction system is divided into sections of 1,500 meters in length, which can be remotely switched to isolate failed sections and ensure uninterrupted services.Fire Equipment Management Centers (FEMC) are managed by both the countries on both sides of the tunnel to keep a check on fire hazards.

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