Strategies for Corrosion Monitoring and Control in a CANDU

Abstract

To minimize corrosion and corrosion product transport in a reactor, it is necessary to implement a chemistry regime, and monitor and control the chemistry to within specifications. This paper highlights three areas of concern for chemistry control in a supercritical water-cooled reactor (SCWR), reviews water chemistries used in fossil-fired and nuclear power plants, discusses modern techniques for high-temperature chemistry control and monitoring, and discusses how chemistry control might affect design. The paper concludes by summarizing the challenges for chemistry control and monitoring in a SCWR, and identifies the need for chemistry control and system design to work together.