Tunnel Brixlegg, Austria
		The Project: Construction of a 4,200 m long railway tunnel Executing company: ARGE H2 Tunnel Brixlegg Porr Tunnelbau G. Hinteregger &Söhne Bilfinger & Berger AG Östu Stettin
The Problem: Open drainage during the tunnel heading. The ARGE H2 Tunnel Brixlegg is building the 4,200 m long railway tunnel in a construction time of 20 months. In order to keep to this schedule, up to five headings will be worked at the same time. The 2,276 m long exploration gallery, which was completed in 2001, serves in part for supplying the headings. In the course of the work the exploration gallery will be enlarged to serve as a rescue gallery. In addition the creation of a 330 m long access gallery from the centre of Brixlegg is planned. Crosscuts at intervals of 500 m are being constructed.
		Our Solution: Use of submersible pumps of type KTZ32.2, these operating in 24-hour snore mode. Thanks to their special properties including their internal rotating mechanical seal and upstream shaft protection sleeve with seal, these Tsurumi pumps can be operated in 24-hour snore mode.
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.