New methods of corrosion monitoring are being developed for tanks containing high-level radioactive waste. The prototype corrosion and chemical analysis probe, which is under production, provides for monitoring vertically in the tank with an adjustable probe head. The probe monitors corrosion using electrochemical noise and chemistry with Raman spectroscopy. Electrochemical noise involves the monitoring of potential and current signals from two sets of electrodes. The electrodes are constructed of carbon steels similar to those for the tank wall and internal cooling coils. The system design and initial laboratory testing are discussed.

Subject
Electric current, Coils, Materials, Probes, Walls, Wiring, Instrumentation, Cables, Corrosion probes, Carbon steel, Wastes, Electrodes, Electrode potential
Keywords:
electrochemical noise monitoring, Raman spectroscopy, nuclear waste tanks
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2002
GOV
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