Advice on the Department of Energy's Cleanup Technology Roadmap Gaps and Bridges (2009) / Chapter Skim
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Appendix F: Oak Ridge Reservation
Appendix F: Oak Ridge Reservation
Pages 222-237
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From page 222... ...
Site operations continue today in the East Tennessee Technology Park, the Y-12 National Security Complex, and the Oak Ridge National laboratory. SOURCE: Department of Energy.
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From page 223... ...
This appendix first describes the history and status of the DOE site at Oak Ridge to provide perspective on the range of cleanup issues being managed by the DOE Office of Environmental Management (EM)
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From page 224... ...
This is followed by a short description of the structure and scope of the DOE EM cleanup program at the ORR. ETTP The ETTP, which was formerly called the Oak Ridge Gaseous Diffusion Plant, was constructed in 1943 to produce enriched uranium hexafluoride for defense purposes and later for nuclear power reactors.
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From page 225... ...
Lithium-6, separated from natural lithium by the COLEX process, was used to produce tritium for nuclear weapons. From 1950 to 1982 an estimated 2 million pounds of mercury at Y-12 were either lost to the environment or otherwise unaccounted for (EM Tour Book 2007)
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From page 226... ...
The ORNL site includes a variety of cleanup challenges: solid low-level waste burial grounds and pits, surface impoundments, Molten Salt Reactor D&D, Core Hole 8 groundwater plume, hydrofracture facility sites, gunite and associated tanks, mercury, buried transuranic waste, and degraded isotope production facilities. ORR Cleanup Program Structure and Scope The EM cleanup program for the ORR is managed by the DOE Oak Ridge Operations Office (ORO)
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From page 227... ...
CLEANUP TECHNOLOGY GAPS IDENTIFIED FOR THE ORR Technology gaps presented in this section are based on presentations and discussions during the committee's March 2007 workshop and its site visit to Oak Ridge in June 2007. They are organized according to the program areas in the draft EM Roadmap presented to the committee in November 2007.
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From page 228... ...
challenges related to mercury. Efforts to reduce concentrations of waterborne mercury in East Fork Poplar Creek at Y-12 may not reduce methylmercury in fish to safe levels.
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From page 229... ...
. Bechtel-Jacobs, DOE's cleanup contractor, recently completed the capping of 145 acres in Melton Valley where ORNL buried radioactive waste for over 40 years (B-J Tour Book 2007; and Van Hoesen 2007)
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From page 230... ...
Phytoremediation for mercury remediation and monitoring of East Fork Poplar Creek; 10. In-situ remediation of pyrophoric materials at the Bear Creek Valley Burial Grounds; 11.
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From page 231... ...
Work includes eliminating classification concerns; gathering additional building characterization data to support preparation of a well-defined scope of work to allow the D&D to be subcontracted; completing hazardous materials abatement to remove asbestos, mercury, and solidified lithium compounds; deactivating utilities; and removing equipment (EM Tour Book 2007)
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From page 232... ...
Program Area: DOE Spent Nuclear Fuel Oak Ridge did not include DOE legacy fuel rod assemblies among its EM cleanup challenges. Presenters did describe challenges in removing salt containing uranium-235 remaining in a reactor used to test molten salt as an alternative reactor fuel.
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From page 233... ...
There was support for heavy-element research from DOE and its predecessors until 2006. Starting in 2007 the hot cells housed an integrated spent fuel processing demonstration for the Global Nuclear Energy Partnership (GNEP)
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From page 234... ...
The FRC supports the DOE Office of Science's Environmental Remediation Sciences Program goal of understanding the complex physical, chemical, and biological properties of contaminated sites. In particular, the FRC promotes understanding of the processes that influence the transport and fate of subsurface contaminants, the effectiveness and long-term consequences of existing remediation options, and the development of improved remediation strategies.
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From page 235... ...
This building includes seven hot cells. Three hot cells are essentially free of contamination, one is being used for high radiation and contamination work, and three are unused or used for storage.
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From page 236... ...
Working lunch presentation to the Committee on Development and Implementation of a Cleanup Technology Roadmap, Oak Ridge National Laboratory,Oak Ridge, TN, June 14. Michaels, G
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From page 237... ...
Improved Method for Transite Removal. Handout to the Committee on Development and Implementation of a Cleanup Technology Roadmap, Oak Ridge National Laboratory, Oak Ridge, TN, June 14.
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