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Remote Elemental Analysis System for Liquid using sonoluminescence

The severe accident that occurred in 2011 brought a significant concern to the world, especially in nuclear reactor technology, one of which is decommissioning. Given the radioactive contamination, the decommissioning process requires extensive information, including the knowledge of the chemical composition of the liquid inside the reactor post-accident. The harsh environment limits the choice of technology. The observation must be done using a remote technique. This work discusses the development of a remote elemental analysis technique to visualize as well as analyze the chemical composition of the liquid inside the reactor, using ultrasound technique, namely sonoluminescence. Spectral analysis of alkali metal and alkaline earth solutions (such as NaCl, SrCl2, and CaCl2) was conducted to confirm the feasibility of remote elemental analysis using sonoluminescence. The optical system using fiber optic and spectral analysis methods enables remote analysis. The simultaneous confirmation using a camera and developed image analysis algorithm based on the HSV method was conducted to confirm the presence of sonoluminescence.