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Safety gallery, Lugano Tunnel, Switzerland

The project:


Construction of 2,400m long escape gallery to the Lugano road tunnel. The tunnel connects the northern districts of the city to the motorway exit Lugano Nord.


Executing company:

Hochtief Construction AG

Muttoni Bellinzona Co.

RL Pumpenanlagen GmbH (Tsurumi partner)

Commissioned by: Canton Ticino


The problem:


Drainage via open dewatering during tunnelling operations.


The solution:


Implementation of several KTZ and KTV series submersible pumps which can be operated in 24-hour snore mode due to their construction type.

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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.