Articles & Case Studies

Hidrostal pumps provide Flood Storage for Canary Wharf Crossrail

Posted: Thursday 20th December 2018


Hidrostal Ltd, the UK division of the renowned Swiss pump manufacturer, has provided the new Crossrail station with pumps for the flood storage facility at their £500 million Canary Wharf site.

The new railway station, which will open in 2019, forms an artificial island in the West India North Docks. It stands within a 475 metre length concrete box and extends up into five upper levels of mixed-use development known as Crossrail Place.

As part of the Crossrail Bill, an agreement was forged between Crossrail and the Environment Agency to provide compensation flood storage to mitigate for the loss of flood storage created by the station infrastructure.

The design of the Flood Storage Reservoir is such that it provides a landscape amenity to the area. This consists of a series of stepped terraced pools lying perpendicular to the dock. The pumping station is located in the lowest of the terraced pools and will pump amenity flows back into the dock. In a flood situation, the dock will weir into the Flood Storage Reservoir.

Hidrostal provided three of their Axial Flow Screw Centrifugal pumps, complete with IP58/IP68 submersible motors, for the Flood Storage Reservoir Pumping Station. These compact low flow axial pumps will operate under normal conditions at a duty of 40 l/s per pump rising to a combined discharge rate of 263 l/s in a flood situation.

Hidrostal pumps were the ideal solution for the project, as in addition to providing flood protection for the station they also complied with additional requirements in passing rags and other fibrous material to at least 100mm ball diameter. Each pump in the Hidrostal range incorporates the patented low shear single vane screw centrifugal impeller. The geometry of the impeller provides optimum hydraulic performance and very large open passages, ensuring that it’s ability to pass rags, fibres and other large objects is second to none.




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April 2019

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