ICE railway track Airport Cologne-Bonn
		The project: Underground railway track for linking Cologne-Bonn airport Executing companies: Consortium Flughafenanbindung Köln/Bonn Los3 E. Heitkamp GmbH Wayss & Freytag Ingenieurbau GmbH Bauer Spezialtiefbau GmbH F.C. Trapp AG Dewatering with 24-h pump duty by:: Smet GWT N.V., Dessel, Belgium Biergans Pumpen-Vertrieb GmbH, Duisburg
The problem: Pumping off the water arising during underground tunnel heading, lowering the ground water level over a large area. Our solution: Deep wells were built in the area in which submersible waste water pump were installed. This allowed to lower the ground-water table to the lowest possible level.
		from top: Fig. 1: Tunel entrance Hermann-Lönsstraße, 1st section of excavation. Fig. 2: KTZ32.2 for sludge pumping
Fig. 3: Support of the drain line by a pipe bridge, 2nd section of excavation. Fig. 4: View into the tunnel, 3rd section of excavation
		Fig. 5, on left: Water drainage with KTZ23.7 on snore mode.
Fig. 6, on right: Water drainage with KTZ67.5 on snore mode, installation in drainage collection shaft.
		Fig. 7, on left: Well pump LH23.0W installed in deep well on snore mode
Fig. 8, on right: Tunnel exit Kriegerstraße, view in direction towards airport
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.