Journal
ANALYTICA CHIMICA ACTA
Volume 1107, Issue -, Pages 1-13Publisher
ELSEVIER
DOI: 10.1016/j.aca.2020.02.008
Keywords
On-line monitoring; Chemometric analysis; Used nuclear fuel; Nuclear waste; Hanford; Spectroscopy
Categories
Funding
- Defense Threat Reduction Agency [HDTRA1-18-1-0015]
- U.S. Department of Energy [DE-AC05-76RL01830]
- U.S. Department of Energy, Office of Environmental Management, through the Washington River Protection Solutions
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Spectroscopic chemometric based on-line monitoring of used nuclear fuel (UNF) reprocessing solutions and characterization of legacy nuclear waste (LNW) stored at Hanford is discussed in this manuscript. Utilizing on-line and near real-time monitoring, as opposed to traditional off-line monitoring, can significantly reduce the cost, risk and improve the efficiency of characterizing UNF and LNW processing streams. Specifically, this manuscript will highlight the benefits of spectroscopy-based monitoring approaches, which generally include the ability to collect data non-destructively. Furthermore, significant literature precedence supports the use of various real-time analysis methods, including chemometric analysis, that enable near-instantaneous conversion of spectroscopic data into information useable by process operators. This approach can accurately quantify and qualify nuclear material in near-real time enabling immediate condition characterization and potential diversion detection within UNF reprocessing streams and LNW. The ability to be applied in a real reprocessing plant and in an actual Hanford waste tank/transfer pipe has been demonstrated by applying this technique to accurately quantify analytes in real UNF streams and LNW samples. The future development of spectroscopy-based on-line monitoring is also discussed in this manuscript. (C) 2020 Elsevier B.V. All rights reserved.
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