ARGE Tunnel Grouft, Luxemburg
		The project: ARGE Tunnel Grouft, Lorenzweiler, Luxemburg Executing companies: Wayss & Freytag Ingenieurbau AG, Max Bögl Bauunternehmung GmbH & Co. KG Societe de Travaux Galere s.a. Tralux s.a.r. Felix Giorgetti s.a.r.
An approximately three km long tunnel is being built north of the city of Luxemburg. It is part of the new section of the “Route du Nord” and consists of two tunnels from which one three-lane and one two-lane tunnel have a gradient of almost 4,5%. The tunnelling work is being performed using conventional construction methods and explosives. The tunnel connects the Heeschdrëfferbierg plateau in the south and the Alzettetal near Lorentzweiler in the north. This will create a section connecting to the important north-south track in Luxemburg. The problem: Open drainage during tunnelling and construction in the open with the help of submersible pumps.
		Our solution: Producing a drainage concept. Types used: KTZ22.2, KTZ32.2, KTZ45.5, KTZ47.5, LH25.5W
In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period. In this regard, please pay attention to our general conditions of sales (www.tsurumi-europe.com/english/GCS.htm) that we also send to you by mail on request.