UO2 CORROSION IN HIGH SURFACE-AREA-TO-VOLUME BATCH EXPERIMENTS

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Unsaturated drip tests have been used to investigate the alteration of unirradiated UO{sub 2} and spent UO{sub 2} fuel in an unsaturated environment, such as may be expected in the proposed repository at Yucca Mountain. In these tests, simulated groundwater is periodically injected onto a sample at 90 C in a steel vessel. The solids react with the dripping groundwater and water condensed on surfaces to form a suite of U(VI) alteration phases. Solution chemistry is determined from leachate at the bottom of each vessel after the leachate stops interacting with the solids. A more detailed knowledge of the compositional ... continued below

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Finch, Robert J.; Wolf, Stephen F.; Hanchar, John M. & Bates, John K. May 11, 1998.

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Unsaturated drip tests have been used to investigate the alteration of unirradiated UO{sub 2} and spent UO{sub 2} fuel in an unsaturated environment, such as may be expected in the proposed repository at Yucca Mountain. In these tests, simulated groundwater is periodically injected onto a sample at 90 C in a steel vessel. The solids react with the dripping groundwater and water condensed on surfaces to form a suite of U(VI) alteration phases. Solution chemistry is determined from leachate at the bottom of each vessel after the leachate stops interacting with the solids. A more detailed knowledge of the compositional evolution of the leachate is desirable. By providing just enough water to maintain a thin film of water on a small quantity of fuel in batch experiments, we can more closely monitor the compositional changes to the water as it reacts to form alteration phases.

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  • Report No.: MOL.19980508.0734
  • Grant Number: DE-AC01-91RW00134
  • Office of Scientific & Technical Information Report Number: 776461
  • Archival Resource Key: ark:/67531/metadc716368

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  • May 11, 1998

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 11, 2016, 12:20 p.m.

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Finch, Robert J.; Wolf, Stephen F.; Hanchar, John M. & Bates, John K. UO2 CORROSION IN HIGH SURFACE-AREA-TO-VOLUME BATCH EXPERIMENTS, report, May 11, 1998; Las Vegas, Nevada. (digital.library.unt.edu/ark:/67531/metadc716368/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.