Corrosivity of Impaired Waters Reused As Power Plant Cooling System Makeup-Bench-Scale Evaluation
Authors: Hsieh, Ming-Kai; Dzombak, David A.; Vidic, Radisav
Source: Proceedings of the Water Environment Federation, WEFTEC 2008: Session 71 through Session 80 , pp. 5920-5925(6)
Publisher: Water Environment Federation
Abstract:A bench-scale recirculating system capable of gravimetric weight loss (WL) and electrochemical polarization resistance (RP) measurements of metal corrosion rates was constructed to analyze the corrosiveness of impaired water to metal alloys used in cooling systems. In the bench-scale system, metal alloy specimens can be exposed to temperature, flow velocity, and water quality similar to those in full-scale cooling systems. Synthetic impaired waters of different water quality were prepared for testing with four metal alloys. Results showed that integration of polarization resistance, RP, which reflects instantaneous corrosion rate, could be correlated with conventional gravimetric weight loss data. The bench-scale system and corrosion measurement methods are being employed to evaluate the effectiveness of different corrosion control programs with impaired waters employed as cooling system makeup.
Document Type: Research article
Publication date: 2008-01-01
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