Preseli Pumping Station
Project Location:
Ernesettle, Devon
Client Name:
Dŵr Cymru Welsh Water
Project Description:
OCU delivered the upgrade of pumping and control infrastructure at Preseli Clear Water Pumping Station, which supplies treated water directly into the distribution network.
The works included installation of a new duty/standby pumping arrangement, new MCC, and conversion of an existing building into a control room. Redundant equipment was removed and new control and feedback systems installed. All works were carried out on a live network, with temporary pumping and generator systems maintaining continuous supply.
Key Stats:
New duty/standby pumping arrangement installed
New MCC installed and commissioned
Temporary pumping and generators maintained supply
Redundant pumps and control systems removed
2 Years
Duration
Challenge
Delivering pump replacement works on a live clear water network
Maintaining continuous supply using temporary pumping arrangements
Protecting water quality during staged testing and commissioning
Working within existing site constraints while upgrading critical assets
Ensuring system reliability while replacing key assets to new infrastructure
Solution
Developed detailed design and delivery planning prior to installation
Implemented a business continuity plan to maintain network supply
Installed temporary pumps and generators to support live operations
Applied double isolation procedures to ensure safe working conditions
Undertook staged offline testing prior to commissioning
Followed structured commissioning and chlorination procedures
Maintained regular coordination with Welsh Water operational teams
Outcome
New pumping system and MCC successfully installed and commissioned
Continuous supply maintained throughout the works with no disruption to the network
Water quality standards maintained during all testing and commissioning stages
Improved reliability and resilience of the clear water pumping station
Scheme delivered safely and in line with client requirements
