Effect of Sequoyah Nuclear Plant Discharges on Chickamauga Lake Water Temperatures

摘要

The near-field effect of Sequoyah Nuclear Plant thermal discharges on Chickamauga Lake water temperatures is discussed. A description and performance characteristics of the plant's heat dispersal facilities, including the cooling water intake, discharge diffuser and cooling towers, are given. The use of the various facilities is described for open, helper and closed mode cooling of the plant. The expected temperature rise and maximum temperatures after diffuser-induced mixing in the Tennessee River are analyzed for the three basic modes of cooling. The use of particular modes during various river flow, river temperature and meteorological conditions is discussed. Compliance with State of Tennessee water temperature standards is evaluated and the mixing zone and water temperature monitoring requirements are discussed. (ERA citation 09:038470)