Our Projects

Cardiff Western District SPS

Increasing the resilience of a critical sewage pumping station by upgrading the power distribution and control networks

Cardiff Western District Sewage Pumping Station (CWD SPS) receives sewage from the western area of Cardiff for onward pumping to Cog Moors WwTW via twin rising mains. The pumping station is a strategic asset and is operationally critical to Welsh Water. Failure of this asset would have severe business impacts. 

During AMP6, a root cause analysis study was carried out to establish risk areas for the site. This identified a number of root causes giving rise to operational risks. It was decided that high priority items relating to the power supply and control hardware would be dealt with by this project.

The installation of the new LVDB platform and LVDB was carried out after the generator hall was emptied. All components were fabricated off site to the maximum size possible to minimise the installation time and requirements on site. Electrical installation then followed for the new LV power, signal and control networks to connect the new generators, existing MCC panels and new LVDB together. 

Following successful testing and commissioning of the new LVDB, a major milestone was achieved in the changeover of the new Shenton generators from supplementary power to standby power mode and the commissioning of the new 2.5MVA HV transformer.

Cardiff WDPS: Supply chain – key participants
  • Client: Welsh Water
  • Principal contractor: Morgan Sindall Construction & Infrastructure Ltd
  • Designer: Arup
  • Mechanical installation: Whitland Engineering Ltd
  • HV electrical installation & earthing contractor: Hornbill Engineering Ltd
  • HV switchgear contractor: SPE Energy Ltd
  • LV switchgear contractor: General Panel Systems Ltd
  • LV electrical installation: Zone Electrical Ltd
  • Generators: Shenton Group UK
  • Kiosks: Morgan Marine
  • Software integration: General Panel Systems Ltd via GPS Links
  • SCADA: Servelec Technologies