A Review of Application of Electrochemical Noise Monitoring to Light Water Reactor Systems

Over the past many years, electrochemical noise (EN) has been one of the most versatile corrosion monitoring and measurement techniques to emerge from the research laboratory and to be employed at operating plants by a number of workers. For corrosion monitoring purpose, the momentary changes in the corrosion potential of a test specimen are measured with respect either to a thermodynamically stable reference electrode or, more commonly, to a quasi reference electrode of suitable material and design. The principal objectives of the present work were to demonstrate the feasibility of using EN techniques SCC initiation in a representative light water reactor (LWR) environment and to investigate the possibility of developing an in-reactor EN sensor on the basis of a blunt notch, CT specimen