Tunnel U2/2, Vienna, Austria
		The Project: Construction of an underground railway tunnel with a length of 1500 m. Executing companies: ARGE Tunnel U2/2 Taborstraße, Vienna, Austria Östu-Stettin Hoch- und Tiefbau GmbH G. Hinteregger &Söhne Bauges.m.b.H. Wayss&Freytag Ingenieurbau AG   The Problem: Drainage of the underground tunnel heading with the aid of submersible pumps.
Our Solution: Use of submersible pumps of the KTV series which can reliably ensure drainage in 24-hour snore mode during the heading work. Thanks to their special properties including their internal rotating mechanical seal and upstream shaft protection sleeve with seal, the Tsurumi pumps can be operated in 24-hour snore mode.		The advantages of this design are: -Extended service lives -Lower costs for spare parts -Lower labour costs
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.