Tank Waste Retrieval, Processing, and On-site Disposal at Three Department of Energy Sites Final Report (2006) / Chapter Skim
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Pages 3-9
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than tank wastes, the committee included them in the study because they are Section 3146 of the NDAA, which contains the request highly radioactive materials extracted from the tank wastes and DOE says it for this study, is related to Section 3116 of the same act. plans either to dispose of them on-site or to combine them with the high Section 3116 explicitly enables DOE to determine that some activity waste stream to be vitrified and sent to geologic disposal.
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Examples of technical challenges include retrieving waste from tanks with significant obstructions at BACKGROUND the Savannah River Site and from tanks with leaks at the If waste retrieval and processing facilities worked per- Hanford Site; and assessing the uncertainties in the perforfectly and at an acceptable cost, the objectives of DOE's mance of planned waste processing approaches, such as the tank cleanup program would be to remove all of the waste deliquification, dissolution, and adjustment (DDA) process at the Savannah River Site and the bulk vitrification process at Hanford.7 Programmatic challenges are those affecting the success of the tank cleanup program, such as budgetary chal 4The legal definition of high-level radioactive waste HLW, as set out in lenges and regulatory challenges (see Chapter VIII)
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From page 5... ...
When selecting a waste processing technology, DOE should take into account the impacts, flexibility, and robust ness of processing facilities and waste forms. The Savannah River Site plans to use the DDA process to free up tank space, 8Currently, the closure schedule for Hanford is 2024 for single-shell tanks but the committee has concerns about the amount of radioacand 2032 for double-shell tanks; at the Savannah River Site, the closure tive material that the DDA process would allow to be dismilestones are 2022 for Type I, II, and IV tanks; and 2028 for Type III posed as low-activity waste on-site.
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because some of the components of monitoring systems should be built into the closure system. DOE should begin to As DOE is in the initial stages of retrieval and closure, build provision for monitoring into its tank closures and dis and as the committee continues to see delays in key pieces of posal facilities and develop plans for a post-closure monitor the tank program (e.g., Salt Waste Processing Facility at the ing program, ensuring that post-closure monitoring and the Savannah River Site and Waste Treatment Plant at Hanford; updating of performance assessments are given appropriate see below)
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From page 7... ...
However, the committee has concerns about with issues related to tank wastes at the Savannah River Site, Hanford Site, the technical performance and safety features of the bulk Idaho National Laboratory, Fernald Site, and West Valley Demonstration Project. vitrification option for supplemental low-activity waste treat 12Compliant waste tanks meet the Resource Conservation and Recovery Act requirements for storage of hazardous waste.
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Topic 2: "Any actions additional to those contained in curIdaho National Laboratory rent plans that [DOE] should consider to ensure that the Idaho faces smaller, simpler challenges than either the plans will comply with the performance objectives of Part 61 Savannah River or Hanford Sites in cleaning out the tanks.
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From page 9... ...
. Hanford, Savannah River, and Idaho sites." · Although the Idaho National Laboratory should focus The committee had to operate within schedule constraints, on tank wastes first, some consideration should be which limited the extent to which it could evaluate technol- given to the calcine waste and bins and their disposiogy alternatives.
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