Costain, the infrastructure solutions company, has completed packing upgrades on the cooling towers at Uniper's Connahs Quay power station in Flintshire, North Wales. The cooling towers at the power station are constructed in concrete cubes, which presented a challenge for the upgrade. The project involved works on ten cell units, making it the largest volume of cells repacked in a single site visit. The project was delivered ahead of schedule by Costain's Industrial Cooling team, despite the complexity of replacing ten individual cooling cells within 33 days.