- 23rd November 2018
- Posted by: Sophie Bunker
- Category: Projects
The Beal Lane Pumping Station was constructed in 1974 to provide drainage to the M62 Motorway at an area west of its junction with the A19.
It originally housed three Archimedean Screw pumps with a total pumping capacity of two cubic meters per second – this would fill an Olympic sized swimming pool in a little over 20 minutes. Discharging into the Aire and Calder Navigation, the pumping station raised the water by approximately four metres.
Recently, the station and its catchment have subsided following the underground extraction of coal from the Kellingley Colliery. This has resulted in a negative gradient in the surrounding drains, and difficulty in conveying flows to the pumping station. Due to ageing components, the current arrangement of the pumping station is quite inefficient. Failing flap valves also means the water is flowing back into the catchment from the canal.
We were commissioned by Highways England, to work in partnership with the Danvm Drainage Commissioners. An options appraisal was carried out encompassing engineering feasibility, environmental issues and economics, drawing on a range of skill sets across the company. Production of an outline design for the refurbishment of the pumping station will follow.
Options considered as part of the study will include:
- Demolition and replacement of the existing pumping station
- Maintaining the structure in its current condition
- Replacing or refurbishing the pumps and controls which are currently installed in the station.
Budget costings will be produced for each of these options and will feed into the economic appraisal.
Our work will give the client an indication of which approach will deliver the best value for money over its design life. A preferred approach to maintaining the current standard of drainage in the area will then be reached with the highest cost-benefit ratio. Should funding of the pumping station refurbishment be approved, this will lead to:
- Extended asset life
- Improved pumping regimes
- Safer working environment for pump maintenance teams and operatives
- Reduced future flood risk within the catchment.