Those look more like helper CT’s designed more to draw in circ water discharge and cool it a bit before letting it go back into the river.
Under normal operation, BFN uses a once-through circulating water system to dissipate heat from the main turbine condensers. Water is drawn from the Tennessee River by the plant intake system and is discharged back to the river. In addition, BFN currently has four mechanical draft cooling towers which can be operated to assist in heat dissipation (helper mode) primarily during summer hot weather periods.
Excerpted from here.