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DOE OSTI · 3376725

Criteria for Retention of 3013 S1 Containers Based on Relative Risk and Expert Judgment

Kelly, Elizabeth J. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000176430371)·Hensel, Stephen [Savannah River National Laboratory (SRNL), Aiken, SC (United States)]·Narlesky, Josh [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000293122052)·Venetz, Theodore [Tradewind, LLC, Richland, WA (United States)]
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Abstract

An evaluation was performed to assess the suitability of thirty-three 3013 containers proposed for retention. These containers have moisture levels greater than 0.08 wt.% – the S1 population. The remainder of the S1 population stored at SRS will be down blended and disposed of by the end of 2028. Based on field surveillance and shelf-life data available to date as well as informed technical judgment, no container is currently expected to fail in its 50-year storage period. However, corrosion risk varies across the S1 population. Relative risks were evaluated using predicted Consensus Scores and their 95% Upper Prediction Limits (UPLs). The predicted values are based on a statistical model of Consensus Score as a function of moisture, chloride, and whether the packaged material was electrorefining scrap packaged at Hanford. Consensus Score has been shown to be a useful indicator of corrosion potential, and the UPL captures uncertainty in the model predictions, providing a conservative indicator of corrosion potential. Using UPLs to determine relative risks, together with expert review, three containers were identified as not suitable for retention, and the remainder were determined to be suitable.

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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS3013 Containers36 MATERIALS SCIENCECorrosionRetentionSafety

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Kelly, Elizabeth J. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000176430371), Hensel, Stephen [Savannah River National Laboratory (SRNL), Aiken, SC (United States)], Narlesky, Josh [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000293122052), Venetz, Theodore [Tradewind, LLC, Richland, WA (United States)]. 2026-07-01. Criteria for Retention of 3013 S1 Containers Based on Relative Risk and Expert Judgment. https://doi.org/10.2172/3376725

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