www.datwyler.com © 2009-2011 Datwyler. All rights reserved. 1 Several hundreds of kilometers of safety cable as well as system components made by Datwyler had been installed in the five motorway tunnels of a total length of more than 13 kilometers. The safety cables with an extended insulation integrity and functional integrity (FE 180/E30-E60) contribute among others to the reliable working of the aeration, ventila- tion, signaling and different illuminations. These systems will still be energised for a predetermined period of time even in case of a fire. Fibre optic cable from Dätwyler had been mainly used in the fields of telecommunication and sensor technology. Pre-tested system solutions The West Bypass at Zurich is a new built motorway of Swit- zerland ´s

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