ARGE tunnel Katzenberg, Germany
Two parallel tunnels, each 9.385 metres in length, single-shell segment lining, tunnelling using two Herrenknecht EPB tunnelling machines.		The project: Part of the expansion and new Karlsruhe-Basle section to provide access to the New Transalpine Rail (NEAT). Executing companies: Wayss & Freytag Ingenieurbau AG E. Züblin Tunnelbau AG Marti Tunnelbau AG Jäger Bau GmbH
The problem: Open water drainage using submersible pumps to the tunnel portals and during tunnelling operations. Our solution: Use of Tsurumi submersible sewage pumps for complete drainage. Pump series used: KTZ, KTV, KRS with agitator.
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, agitator, 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.