Challenge: A six-month eld test of Mexel 432/0 water treatment was conducted in a condenser cooling water system at a 1450 MW coal-red power plant. Mexel was evaluated for its prevention of fouling in a 200 MW power cooling water circuit unit against an identical untreated unit. Mexel was quantitatively and qualitatively evaluated in relation to a condenser’s performance in which it was determined to improve performance, reduce corrosion, metal discharges, biofouling and simplify maintenance. Treatment: Kingston’s cooling water is drawn from a canal connected to the Clinch River. The tested units were supplied from two pumps rated at 65,000 gpm with a typical combined ow rate of 110,000 to 120,000 gpm. The cooling water was then discharged to Watts Barr Lake. The tested dosing equipment

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