Articles & Case Studies


Posted: Thursday 18th June 2015

Hire specialist, Sykes Pumps has provided five submersible pumps for an over-pumping operation that will enable fish to navigate the River Bollin, at Wilmslow in Cheshire more easily.

Specialist contractor CT Construction, working for framework contractor to the Environment Agency, Balvac, is delivering the project which involves diverting water from the site to enable a pre-cast concrete fish pass to be installed on the river bed.

Sykes Pumps has provided five PX 30N electric submersible pumps which have been installed across the river at the location where CT Construction will install the fish pass. Each pump has been fitted with 40 metres of discharge hose, enabling the construction team to pump water downstream. The pumps will run continually, diverting the flow throughout the four week project.

The project has been commissioned in response to an EU Directive that requires all rivers to be navigable by fish. CT Construction will excavate the drained site and install blinding concrete as a base for the pre-cast pre-barrage fish pass, which includes a bristled upper surface to enable eels to pass through easily, before craning the pre-cast structure into place and securing it with concrete tie-ins. The site will then be backfilled before the flow of the river is allowed to raise the water level once again.

The scheme also involves under-pinning the river banks at the fish pass sites using sheet piling and concrete.

Comments Oliver Tolputt from CT Construction: “Reliable and effective pumps are a business critical part of this project as we need to divert the river’s flow in order to excavate and construct the fish pass and to ensure the safety of our team.

“Sykes Pumps has the wide-ranging fleet required to answer our needs while providing prompt local service thanks to its depot network.”

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