Stored nuclear waste must be retrieved from storage, treated, separated into low- and high-level waste streams, and then processed for eventual disposal.  Before waste retrieval can be done, waste composition will need to be characterized. There is also a need for active monitoring of the dynamic chemistry of the waste during storage since the waste composition can become highly corrosive.  An integrated Raman and turbidity fiber optic probe head was developed for use in nuclear waste solutions. The sensor allows the simultaneous chemical identification of nuclear waste and determination of the clarity of the waste solution using a common laser excitation source.  A partial least square algorithm employing both the Raman and turbidity data was developed to accurately predict the concentrations of analytes in the waste solution.

Development of a novel, integrated fiber optic Raman and turbidity probe for in situ use in nuclear waste solutions

245th National Meeting (2013)

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