Hanford Tank Safety Project: Minutes of the Tank Waste Science Panel meeting, February 7--8, 1991

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The Tank Waste Science Panel met February 7--8, 1991, to review the latest data from the analyses of the October 24, 1990, gas release from Tank 241-SY-101 (101-SY) at Hanford; discuss the results of work being performed in support of the Hanford Tank Safety Project; and be briefed on the ferrocyanide issues included in the expanded scope of the Science Panel. The shapes of the gas release curves from the past three events are similar and correlate well with changes in waste level, but the correlation between the released volume of gas and the waste height is not as good. ... continued below

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Pages: (218 p)

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Strachan, D.M. (comp.) June 1, 1991.

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The Tank Waste Science Panel met February 7--8, 1991, to review the latest data from the analyses of the October 24, 1990, gas release from Tank 241-SY-101 (101-SY) at Hanford; discuss the results of work being performed in support of the Hanford Tank Safety Project; and be briefed on the ferrocyanide issues included in the expanded scope of the Science Panel. The shapes of the gas release curves from the past three events are similar and correlate well with changes in waste level, but the correlation between the released volume of gas and the waste height is not as good. An analysis of the kinetics of gas generation from waste height measurements in Tank 101-SY suggests that the reaction giving rise to the gases in the tank is independent of the gas pressure and independent of the physical processes that give rise to the episodic release of the gases. Tank waste height data were also used to suggest that a floating crust formed early in the history of the tank and that the current crust is being made thicker in the eastern sector of the tank by repeated upheaval of waste slurry onto the surface. The correlation between the N{sub 2}O and N{sub 2} generated in the October release appears to be 1:1, suggesting a single mechanistic pathway. Analysis of other gas generation ratios, however, suggests that H{sub 2} and N{sub 2}O are evolved together, whereas N{sub 2} is from the air. If similar ratios are observed in planned radiolysis experiments are Argonne National Laboratory, radiolysis would appear to be generating most of the gases in Tank 101-SY. Data from analysis of synthetic waste crust using a dynamic x-ray diffractometer suggest that, in air, organics are being oxidized and liberating CO{sub 2} and NO{sub x}. Experiments at Savannah River Laboratory indicate that irradiation of solutions containing NO{sub 3} and organics can produce N{sub 2}O.

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Pages: (218 p)

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OSTI; NTIS; GPO Dep.

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  • 4. meeting of the Tank Waste Science Panel (TWSP), Denver, CO (United States), 7-8 Feb 1991

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  • Other: DE92010702
  • Report No.: PNL-7709
  • Report No.: CONF-9102165--
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 5719135
  • Archival Resource Key: ark:/67531/metadc1092827

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  • June 1, 1991

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 20, 2018, 12:37 p.m.

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Strachan, D.M. (comp.). Hanford Tank Safety Project: Minutes of the Tank Waste Science Panel meeting, February 7--8, 1991, article, June 1, 1991; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc1092827/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.