How much water will the CFPP require for cooling during operation?
The site water consumption is largely driven by the plant operation cooling needs, which will be designed for the specific selected site. Until the cooling system design path is selected, overall site water consumption cannot be confirmed. For the option that uses the highest amount of water, full wet cooling, a NuScale 600-MWe facility (12 units at 50 MWe each) will have a total daily water usage estimated to be as high as 15.7 million gallons used for heat rejection. Approximately 400,000 gallons per day are required for all other uses, including make-up fuel and reactor pool evaporative losses, potable water usage, firewater, and other auxiliary system water uses considered. Note that this is a highest water use scenario; other options are being evaluated with lower water usage rates.