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Moosach subway tunnel, Munich, Germany

The project:


Renovation of the U3 between the Olympia shopping centre and Moosach


Executing company:

ARGE U-Bahn Line 3 North, construction lot 2: Wayss&Freytag Ingenieurbau Hochtief Construction Bauer Spezialtiefbau


The problem:


Groundwater drainage during the entire construction phase: Laying of sewers, construction of subway tunnels and stations.


Our solution:


Multiple submersible pumps from the LSC series (puddle sucker) were used. The special characteristics of Tsurumi pumps, such as an internal mechanical seal, upstream shaft sleeve with gasket and a patented oil lifter allow them to be used in snore mode over an extended period.

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 terms and conditions that we also send to you by mail on request.