Dungeness B Power Station Cooling Water system is supplemented with an Electro chlorination plant (ECHL).
Due to reliability issues with the previous Electro chlorination plant and concerns that it will not be able to be relied on until the end of station life it was decided to address the ongoing issues and replace the previous system was the appropriate strategy. Working with parent company EDF, Dalkia secured the contract to commence works in February 2020.
EDF immediately set to work supported by a water treatment specialist approving a design and procuring the new equipment. As part of the Dalkia scope which utilised our electrical, mechanical and civil skill set we delivered strip out works, led the removal of the redundant sodium hypo chloride tank (demolition works), constructed a new cell room extension and ensured a series of installations. These included; new pump and sea water strainer skids, sodium hypo chloride storage tank, generator cells (and all associated pipework), design manufacture and installation of new galvanised steel staircase and lifting beam. Finally, a series of electrical installations were necessary to complete works ranging from instalment of new containment systems to power and lighting upgrades and replacement of an upgraded fire protection system.
All work was delivered safely in adherence to EDF and Dalkia’s documented safety policies.
With construction commencing June 2020 and completing January 2021, the EDF and Dalkia team worked closely together delivering a high quality transformation. As a large scale project there were challenges when working within the parameters of a Nuclear Power Station, while also contending with the effects of a worldwide pandemic. Collaborative and committed to the end result, Dalkia and EDF were able to overcome such challenges and deliver on schedule. As the project now moves into the commissioning phase Dalkia will continue to grow its site presence at Dungeness and look to support the station wherever possible.