89-01: Reducing Copper Corrosion and Discharge Via a Novel Inhibitor and

The A.B. Hopkins Generating Station operates under severe copper discharge limits of 30 ppb at the discharge point. A program of continuous feed of 3 ppm of Tolyltriazole reduced Admiralty Brass corrosion rates from 1.5 mpy to 0.15 mpy, and copper discharge from 400 ppb to 120 ppb. A new proprietary inhibitor, which is feed for 10 minutes every 3 weeks to 5 ppm active reduced corrosion rates to 0.0w mpy and copper discharge to 20-25 ppb.