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Research Needs for High-Level Waste Stored in Tanks and Bins at U.S. Department of Energy Sites Environmental Management Science Program (2001) / Chapter Skim
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8. Summary
Pages 83-86

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From page 83...
... · Improving process effectiveness. The purpose of the recommended research activities is to improve the effectiveness of the different HLW process areas (characterization, retrieval, pretreatment, immobi I ization, and tank closure)
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From page 84...
... Increase the efficiency of liquid X X X decontamination methods Immobilization Identify alternative immobilization media to X X (Chapter 5) overcome limitations of borosilicate-glasses Investigate the effect of increased crystal content X X X on the durability of the borosilicate glass matrix Improve phenomenological models to predict long-term leachability of various glass waste forms Evaluate advantages of using unreacted glass-forming chemicals versus premelted glass frit X X X X X Understand the mechanism offoaming in X X Joule-heated melter Mitigate effects of precipitation of noble metals X X and crystalline phases in Joule melters Improve Joule-heated melters to achieve X X X higher processing temperatures Develop alternatives to Joule-heated melting X X Tank closure and Develop highly innovative and effective retrieval X X X other long-term methods for removal of residual HLW from issues the tanks (Chapter 6)
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From page 85...
... The EMSP can contribute to reducing technological risk by funding a basic research program focused on alternative processes and improved approaches to current baseline plans, as recommended in the foregoing chapters. It is important that the sites and EM collaborate to build research roadmaps identifying technological risk and including contingency approaches.
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From page 86...
... Current plans to treat and dispose of HLW are fraught with technical uncertainties, and many of the planned treatment activities are first-of-a-kind efforts presenting enormous technical chal lenges. The recommendations in this report address contingency approaches or improvements to the current HLW management baseline plans.
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Key Terms

  • contingency approaches
  • process effectiveness
  • providing contingency
  • baseline plans
  • emsp research

  • borosilicate glass
  • effective retrieval
  • desired attributes
  • highly innovative
  • develop highly

  • crystal content
  • waste forms
  • tank closure
  • improving process
  • alternative immobilization

  • phenomenological models
  • remediation policies
  • managing technological
  • recommends consideration
  • evaluate advantages

  • following desired
  • improved approaches
  • process improvements
  • foregoing chapters
  • accomplish goals

  • current immobilization
  • report address
  • processing temperatures
  • hlw materials
  • glass frit


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