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An End State Methodology for Identifying Technology Needs for Environmental Management, with an Example from the Hanford Site Tanks (1999) / Chapter Skim
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Appendix A: Summary of Scenario-Based Studies of the Remediation of High-Level Waste in Tanks
Pages 79-83

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From page 79...
... (1993) recommended that plans and technology development for two alternative bounding technologies for the Hanford tanks waste disposal program be carried forward in parallel: · extensive separations followed by vitrification at a relatively small plant (possibly even at another DOE site)
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From page 80...
... In particular, an integrated technology development program focused on extensive separations was never funded. More recently, following completion of the March 1996 Tn-Party Agreement milestone to evaluate enhanced sludge washing, it was determined that enhanced sludge washing was likely to lead to an acceptably small volume of high-level waste, and advanced separations were not required.
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From page 81...
... This information can be help fill in identifying plausible scenarios for use in an end state approach. For example, the indication that many tanks pose a relatively low risk could lead to the inclusion of the apparently less-expensive in situ disposal scenario as one of the alternatives to be considered in identifying technology development needs.
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From page 82...
... all use end state approaches, including at least some consideration of alternative scenanos. The committee believes that these studies contribute significantly to our overall understanding of the health, environmental, and programmatic risk from the Hanford tanks, and that the general approach adopted therein can be a useful way of identifying technology development needs.
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From page 83...
... Waste Tank 241-SY-101. Los Alamos National Laboratory, Los Alamos, NM, and PEG, Tnc.
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Key Terms

  • situ disposal
  • tank wastes
  • probabilistic safety
  • hanford tanks
  • existing baseline

  • decision analysis
  • alternative strategies
  • report considers
  • baseline strategy
  • hanford tank

  • safety assessment
  • composite strategy
  • pneumatic retrieval
  • contingency planning
  • waste treatment

  • waste remediation
  • northwest national
  • evaluating alternative
  • enhanced sludge
  • sludge washing

  • tanks waste
  • identifying technology
  • hanford site
  • specifically intended
  • waste tanks

  • risk prior
  • preferred option
  • development decisions
  • situ remediation
  • constrain processing


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