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Release and transport of gaseous C-14 from a nuclear waste repository in an unsaturated medium

Description: The potential nuclear waste repository at Yucca Mountain is to be in partially saturated rock. Released radioactive gases such as {sup 14}CO{sub 2} could have a direct pathway to the biosphere. We study the release of {sup 14}C released as {sup 14}CO{sub 2} from partly failed nuclear waste containers by analyzing the flow of gas into and out of a container. We analyze the transport of released {sup 14}CO{sub 2} in an unsaturated, fractured, porous medium with gas-phase advection and dispersion.… more
Date: November 1, 1990
Creator: Light, W. B.; Zwahlen, E. D.; Pigford, T. H.; Chambre, P. L. & Lee, W. W. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Workshop on environmental research for actinide elements

Description: The topics of discussion in this fourth workshop centered on the adequacy of plutonium information, the needs and direction of future transuranium research and the research necessary for an appraisal of the potential hazards associated with thorium and high specific activity uranium isotopes. These topics were discussed in four panels which have prepared reports that make up the body of these proceedings. The four panels were: ecosystem research; plant/soils research; marine and freshwater rese… more
Date: January 1, 1978
Creator: Watters, R.L. (ed.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Migration of radionuclides in geologic media: Fundamental research needs

Description: An assessment of the fundamental research needs in understanding and predicting the migration of radionuclides in the subsurface is provided. Emphasis is on the following three technical areas: (1) aqueous speciation of radionuclides, (2) the interaction of radionuclides with substrates, and (3) intermediate-scale interaction studies. This research relates to important issues associated with environmental restoration and remediation of DOE sites contaminated with mixed radionuclide-organic wast… more
Date: January 1, 1990
Creator: Reed, D. T. (Argonne National Lab., IL (USA)); Zachara, J. M.; Wildung, R. E. (Pacific Northwest Lab., Richland, WA (USA)) & Wobber, F. J. (USDOE, Washington, DC (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Minutes from Department of Energy/Hazardous Waste Remedial Actions Program, research and development technology needs assessment review meeting for FY 1990, September 1989, Oak Ridge, Tennessee

Description: On September 20--21, 1989, representatives of the Department of Energy (DOE) Headquarters, DOE Operations Offices, DOE contractors, and the Hazardous Waste Remedial Actions Program met in Oak Ridge, Tennessee, to select and prioritize candidate waste problems in need of research and development. The information gained will be used in planning for future research and development tasks and in restructuring current research activities to address the priority needs. Consistent with the ongoing reev… more
Date: August 1, 1990
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Survey and analysis of federally developed technology

Description: The methodology and results of a test effort to determine whether there exist unexpected opportunities for the direct transfer of technologies from federal laboratories to industry are presented. Specifically, the latest results of six federal laboratories with potential application in the pulp and paper industry, particularly those results applicable to improving energy productivity, were evaluated, cataloged, and distributed to industry representatives to gauge their reaction. The principal m… more
Date: February 1, 1983
Creator: Reed, J.E. & Conrad, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recommendations concerning research and model evaluation needs to support breeder reactor environmental radiological assessments

Description: Purpose of this report is to present recommendations concerning needs for model evaluations, environmental research, and biomedical research to support breeder reactor environmental radiological assessments. More data are needed to specify dry deposition velocities and to validate plume depletion models. More atmospheric dispersion data are required to characterize flow near buildings, in complex terrain, and for travel distances at 100 km or more. Field data are needed for terrestrial food cha… more
Date: December 1, 1980
Creator: Miller, C. W.; Dunning, D. E., Jr.; Etnier, E. L.; Kocher, D. C.; McDowell-Boyer, L. M.; Meyer, H. R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of injection well risk management potential in the Williston Basin

Description: The UIC regulations promulgated by the EPA under the Safe Drinking Water Act (SDWA) provide the EPA, or an EPA approved state agency, with authority to regulate subsurface injection of fluids to protect USDWs. Oil and gas producing industry interests are concerned primarily with Class 2 wells whose uses as defined by UIC regulations are: disposal of fluids brought to the surface and liquids generated in connection with oil and gas production (SWD); injection of fluids for enhanced oil recovery … more
Date: September 1, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review and evaluation of literature on testing of chemical additives for scale control in geothermal fluids. Final report

Description: A selected group of reported tests of chemical additives in actual geothermal fluids are reviewed and evaluated to summarize the status of chemical scale-control testing and identify information and testing needs. The task distinguishes between scale control in the cooling system of a flash plant and elsewhere in the utilization system due to the essentially different operating environments involved. Additives for non-cooling geothermal fluids are discussed by scale type: silica, carbonate, and… more
Date: January 1, 1981
Creator: Crane, C.H. & Kenkeremath, D.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermophysical properties of fast reactor fuel

Description: This paper identifies the fuel properties for which more data are needed for fast-reactor safety analysis. In addition, a brief review is given of current research on the vapor pressure over liquid UO/sub 2/ and (U,PU)O/sub 2-x/, the solid-solid phase transition in actinide oxides, and the thermal conductivity of molten urania.
Date: January 1, 1984
Creator: Fink, J.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary of activities of the life cycle costing workshop conducted by the Environmental Restoration Program of Oak Ridge National Laboratory

Description: A five-day life cycle workshop was conducted by the Environmental Restoration (FR) Program of Oak Ridge National Laboratory (ORNL) to develop appropriate remediation scenarios for each Waste Area Grouping (WAG) at ORNL and to identify associated data needs (e.g., remedial investigations, special studies, and technology demonstrations) and required interfaces. Workshop participants represented the Department of Energy, Martin Marietta Energy Systems, Inc., Bechtel National, Radian Corporation, E… more
Date: August 1, 1992
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Modeling of coupled geochemical and transport processes: An overview

Description: Early coupled models associated with fluid flow and solute transport have been limited by assumed conditions of constant temperature, fully saturated fluid flow, and constant pore fluid velocity. Developments including coupling of chemical reactions to variable fields of temperature and fluid flow have generated new requirements for experimental data. As the capabilities of coupled models expand, needs are created for experimental data to be used for both input and validation. 25 refs.
Date: October 1, 1989
Creator: Carnahan, C.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Environmental restoration and statistics: Issues and needs

Description: Statisticians have a vital role to play in environmental restoration (ER) activities. One facet of that role is to point out where additional work is needed to develop statistical sampling plans and data analyses that meet the needs of ER. This paper is an attempt to show where statistics fits into the ER process. The statistician, as member of the ER planning team, works collaboratively with the team to develop the site characterization sampling design, so that data of the quality and quantity… more
Date: October 1, 1991
Creator: Gilbert, R.O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Basic research for environmental restoration

Description: The Department of Energy (DOE) is in the midst of a major environmental restoration effort to reduce the health and environmental risks resulting from past waste management and disposal practices at DOE sites. This report describes research needs in environmental restoration and complements a previously published document, DOE/ER-0419, Evaluation of Mid-to-Long Term Basic Research for Environmental Restoration. Basic research needs have been grouped into five major categories patterned after th… more
Date: December 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An analysis of precipitation occurrences in Los Alamos, New Mexico, for long-term predictions of waste repository behavior

Description: This study describes precipitation as an uncontrolled natural input influencing the hydrology of waste repositories in terms of their ultimate long-term closure. The general climatology of the western states, including that of New Mexico and Los Alamos, is first described. An analysis of the precipitation patterns at Los Alamos is then presented to be used for predicting long-term precipitation occurrences and shallow land burial site behavior. The waste management implications of this precipit… more
Date: February 1, 1989
Creator: Nyhan, J.; Beckman, R. & Bowen, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Report of the second meeting of the consultants on coupled processes associated with geological disposal of nuclear waste

Description: The second meeting of the Consultants on Coupled Processes Associated with Geological Disposal of Nuclear Waste occurred on January 15-16, 1985 at Lawrence Berkeley Laboratory (LBL). All the consultants were present except Dr. K. Kovari, who presented comments in writing afterward. This report contains a brief summary of the presentations and discussions from the meeting. The main points of the speakers' topics are briefly summarized in the report. Some points that emerged during the discussion… more
Date: September 1, 1985
Creator: Tsang, Chin-Fu & Mangold, D.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characterization and Supply of Coal Based Fuels: Volume 1. Final Report & Appendix A

Description: Studies and data applicable for fuel markets and coal resource assessments were reviewed and evaluated to provide both guidelines and specifications for premium quality coal-based fuels. The fuels supplied under this contract were provided for testing of advanced combustors being developed under Pittsburgh Energy Technology Center (PETC) sponsorship for use in the residential, commercial and light industrial (RCLI) market sectors. The requirements of the combustor development contractors were s… more
Date: June 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Integration of photovoltaic units into electric utility grids: experiment information requirements and selected issues

Description: A number of investigations have led to the recognition of technical, economic, and institutional issues relating to the interface between solar electric technologies and electric utility systems. These issues derive from three attributes of solar electric power concepts, including (1) the variability and unpredictability of the solar resources, (2) the dispersed nature of those resources which suggest the deployment of small dispersed power units, and (3) a high initial capital cost coupled wit… more
Date: September 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research Needs in Cement-Based Waste Forms

Description: Cement-based waste forms are one of the most widely used waste disposal options, yet definitive knowledge of the fate of the waste species inside the waste form is lacking. A fundamental understanding of the chemistry and microstructure of the waste forms would lead to a better understanding of the mass transfer of the waste species, more confidence in predicting and extrapolating waste form performance, and design of better waste forms. Better and cheaper leach tests would lead to quicker and … more
Date: January 1, 1990
Creator: McDaniel, E. W.; Spence, R. D. & Tallent, O. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Critical issues in the use of metals and alloys in sulphur-containing aqueous systems

Description: Sulphur-containing aqueous fluids are amongst the most corrosive environments experienced in industrial and natural systems. The high corrosivity is due principally to the wide range of oxidation states that sulphur may exist in within the thermodynamic stability domain of water, as well as to the high lability of many sulphur species, such as the polythionic acids and polysulfides. Additionally, sulphur, along with arsenic, antimony, and mercury, effectively promotes the entry of hydrogen into… more
Date: January 1, 1992
Creator: Macdonald, Digby D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Workshop on innovation in materials processing and manufacture: Exploratory concepts for energy applications

Description: The goal of the workshop was to bring together industrial, academic, and DOE Laboratory personnel to discuss and identify potential areas for which creative, innovative, and/or multidisciplinary solutions could result in major payoffs for the nation`s energy economy, DOE, and industry. The topics emphasized in these discussions were: surfaces and interfacial processing technologies, biomolecular materials, powder/precursor technologies, magnetic materials, nanoscale materials, novel ceramics an… more
Date: June 1, 1993
Creator: Horton, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atmospheric Carbon Dioxide and the Global Carbon Cycle: The Key Uncertainties

Description: The biogeochemical cycling of carbon between its sources and sinks determines the rate of increase in atmospheric CO/sub 2/ concentrations. The observed increase in atmospheric CO/sub 2/ content is less than the estimated release from fossil fuel consumption and deforestation. This discrepancy can be explained by interactions between the atmosphere and other global carbon reservoirs such as the oceans, and the terrestrial biosphere including soils. Undoubtedly, the oceans have been the most imp… more
Date: January 1, 1987
Creator: Peng, T. H.; Post, W. M.; DeAngelis, D. L.; Dale, V. H. & Farrell, M. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Coal liquefaction: A research and development needs assessment: Final report, Volume 2

Description: Volume II of this report on an assessment of research needs for coal liquefaction contains reviews of the five liquefaction technologies---direct, indirect, pyrolysis, coprocessing, and bioconversion. These reviews are not meant to be encyclopedic; several outstanding reviews of liquefaction have appeared in recent years and the reader is referred to these whenever applicable. Instead, these chapters contain reviews of selected topics that serve to support the panel's recommendations or to illu… more
Date: March 1, 1989
Creator: Schindler, H. D.; Burke, F. P.; Chao, K. C.; Davis, B. H.; Gorbaty, M. L.; Klier, K. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review of information on the radiation chemistry of materials around waste canisters in salt and assessment of the need for additional experimental information

Description: The brines, vapors, and salts precipitated from the brines will be exposed to gamma rays and to elevated temperatures in the regions close to a waste package in the salt. Accordingly, they will be subject to changes in composition brought about by reactions induced by the radiations and heat. This report reviews the status of information on the radiation chemistry of brines, gases, and solids which might be present around a waste package in salt and to assess the need for additional laboratory … more
Date: March 1, 1980
Creator: Jenks, G.H. & Baes, C.F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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