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Title: MIS High-Purity Uranium/Plutonium Oxide Metal Oxidation Product SCP711-56 (SSR135): Final Report

Abstract

A high-purity uranium/plutonium mixed oxide material from the Material Identification and Surveillance (MIS) Program inventory has been studied with regard to gas generation and corrosion in a storage environment. Sample SCP711-56 represents process plutonium oxides from mixed oxides at the Hanford Site, byproduct plutonium/uranium mixed oxides at the Rocky Flats Plant, Hanford Site mixed oxides at Savannah River, mixed oxides from alloy oxidation at Savannah River, scrap mixed oxides at Savannah River and plutonium/uranium oxide at Los Alamos National Laboratory that are currently stored in 3013 containers. After calcination to 950°C the material contains 17% fuel grade plutonium and 68% uranium with approximately 1.5% impurities and the remainder principally oxygen. This study followed over time the gas pressure of a sample with nominally 0.1 wt% water in a sealed container with an internal volume scaled to 1/500th of the volume of a 3013 container. Gas compositions were measured periodically over approximately 4 years. The maximum observed gas pressure was 115 kPa. The increase over the initial pressure of 83 kPa was primarily due to generation of carbon dioxide and nitrogen gases. A small amount of hydrogen was generated and oxygen was consumed. At the completion of the study, the internalmore » components of the sealed container showed signs of corrosion, including pitting.« less

Authors:
 [1];  [1];  [1];  [1]; ORCiD logo [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM)
OSTI Identifier:
1492636
Report Number(s):
LA-UR-19-20356
DOE Contract Number:  
89233218CNA000001
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
Plutonium oxide storage, Uranium oxide, gas generation

Citation Formats

Veirs, Douglas Kirk, Stroud, Mary Ann, Martinez, Max, Carrillo, Alex, Berg, John M., Narlesky, Joshua Edward, and Worl, Laura Ann. MIS High-Purity Uranium/Plutonium Oxide Metal Oxidation Product SCP711-56 (SSR135): Final Report. United States: N. p., 2019. Web. doi:10.2172/1492636.
Veirs, Douglas Kirk, Stroud, Mary Ann, Martinez, Max, Carrillo, Alex, Berg, John M., Narlesky, Joshua Edward, & Worl, Laura Ann. MIS High-Purity Uranium/Plutonium Oxide Metal Oxidation Product SCP711-56 (SSR135): Final Report. United States. doi:10.2172/1492636.
Veirs, Douglas Kirk, Stroud, Mary Ann, Martinez, Max, Carrillo, Alex, Berg, John M., Narlesky, Joshua Edward, and Worl, Laura Ann. Thu . "MIS High-Purity Uranium/Plutonium Oxide Metal Oxidation Product SCP711-56 (SSR135): Final Report". United States. doi:10.2172/1492636. https://www.osti.gov/servlets/purl/1492636.
@article{osti_1492636,
title = {MIS High-Purity Uranium/Plutonium Oxide Metal Oxidation Product SCP711-56 (SSR135): Final Report},
author = {Veirs, Douglas Kirk and Stroud, Mary Ann and Martinez, Max and Carrillo, Alex and Berg, John M. and Narlesky, Joshua Edward and Worl, Laura Ann},
abstractNote = {A high-purity uranium/plutonium mixed oxide material from the Material Identification and Surveillance (MIS) Program inventory has been studied with regard to gas generation and corrosion in a storage environment. Sample SCP711-56 represents process plutonium oxides from mixed oxides at the Hanford Site, byproduct plutonium/uranium mixed oxides at the Rocky Flats Plant, Hanford Site mixed oxides at Savannah River, mixed oxides from alloy oxidation at Savannah River, scrap mixed oxides at Savannah River and plutonium/uranium oxide at Los Alamos National Laboratory that are currently stored in 3013 containers. After calcination to 950°C the material contains 17% fuel grade plutonium and 68% uranium with approximately 1.5% impurities and the remainder principally oxygen. This study followed over time the gas pressure of a sample with nominally 0.1 wt% water in a sealed container with an internal volume scaled to 1/500th of the volume of a 3013 container. Gas compositions were measured periodically over approximately 4 years. The maximum observed gas pressure was 115 kPa. The increase over the initial pressure of 83 kPa was primarily due to generation of carbon dioxide and nitrogen gases. A small amount of hydrogen was generated and oxygen was consumed. At the completion of the study, the internal components of the sealed container showed signs of corrosion, including pitting.},
doi = {10.2172/1492636},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

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