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Systematic approach for assessment of alternative nuclear waste management strategies

Description: A systematic approach for alternative nuclear waste management assessment is prescribed for evaluating the fate and transport of radwaste in the environment and to man. The approach consists of a system of flow dynamic and waste transport models for the physical environment, transfer models to biota, and dose models to man. Flow dynamic and waste transport models are included for computing spatial-temporal variations of the flow field and radwaste concentration in subsurface aquifers, surface w… more
Date: January 1, 1979
Creator: Yeh, G.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Variable thickness transient ground-water flow model. Volume 3. Program listings

Description: The Assessment of Effectiveness of Geologic Isolation Systems (AEGIS) Program is developing and applying the methodology for assessing the far-field, long-term post-closure safety of deep geologic nuclear waste repositories. AEGIS is being performed by Pacific Northwest Laboratory (PNL) under contract with the Office of Nuclear Waste Isolation (OWNI) for the Department of Energy (DOE). One task within AEGIS is the development of methodology for analysis of the consequences (water pathway) from … more
Date: December 1, 1979
Creator: Reisenauer, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General basin modeling for site suitability. Draft report 1. Baseline data

Description: This report summarizes work completed by Golder Associates under Task 2 - Site Suitability specifically for modeling of fluid flow and mass transport in sedimentary basins containing thick shale or salt. It also describes ongoing and future work on the above topic. The purpose of the study is to develop a general model for a nuclear waste repository situated in a deep sedimentary basin environment. The model will be used in conjunction with Golder's fluid flow and mass transport codes to study … more
Date: April 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stimulation and reservoir engineering of geothermal resources. Second annual report, July 1, 1978-September 30, 1979

Description: Individual projects are grouped under four main areas of study: energy extraction, bench-scale flow experiments, radon tracer techniques, and well test analysis. The energy extraction experiments concern the efficiency with which the in-place heat and fluids can be produced in the most economical manner. The bench-scale flow experiments cover the results of three models used to examine the properties of flow through porous media at elevated temperature and pressures. Random tracer techniques de… more
Date: September 1, 1979
Creator: Kruger, P. & Ramey, H.J. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Variable thickness transient ground-water flow model. Volume 1. Formulation

Description: Mathematical formulation for the variable thickness transient (VTT) model of an aquifer system is presented. The basic assumptions are described. Specific data requirements for the physical parameters are discussed. The boundary definitions and solution techniques of the numerical formulation of the system of equations are presented.
Date: December 1, 1979
Creator: Reisenauer, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste Isolation Safety Assessment Program. Technical progress report for FY-1978

Description: Associated with commercial nuclear power production in the United States is the generation of potentially hazardous radioactive wastes. The Department of Energy (DOE) is seeking to develop nuclear waste isolation systems in geologic formations that will preclude contact with the biosphere of waste radionuclides in concentrations which are sufficient to cause deleterious impact on humans or their environments. Comprehensive analyses of specific isolation systems are needed to assess the expectat… more
Date: July 1, 1979
Creator: Brandstetter, A.; Harwell, M.A.; Howes, B.W.; Benson, G.L.; Bradley, D.J.; Raymond, J.R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle, Coal-Fired MHD Generators. Ninth-Tenth Quarterly Technical Progress Report, July 1, 1978-April 30, 1979

Description: The successful design of full-scale open-cycle, coal-fired MHD generators for baseload electrical production requires a detailed understanding of the plasma chemical and plasma dynamic characteristics of anticipated combustor and channel fluids. This report documents progress in efforts to model negative ion formation and slag condensation effects on core flow conductivity, to improve the ability to sample and characterize laboratory produced coal combustion plasmas, and to measure mechanisms a… more
Date: May 1, 1979
Creator: Kolb, C. E.; Wormhoudt, J.; Yousefian, V.; Cheng, W.; Bien, F.; Martinez-Sanchez, M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Near-field interactions

Description: To approach the subject of high level nuclear waste disposal in deep ocean sediments it is convenient to differentiate between processes occurring in a near field environment, that region arbitrarily defined as lying between the canister surface and the maximum extent of the 100/sup 0/C isotherm, and those which occur at lower temperatures and beyond the influence of intense radiation. A variety of considerations related to the chemistry of seawater-sediment mixtures suggests that about 200/sup… more
Date: February 1, 1979
Creator: Krumhansl, J.L. & McVey, D.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle, Coal-Fired MHD Generators. Eleventh Quarterly Technical Progress Report, May 1-July 31, 1979

Description: The successful design of full-scale open-cycle, coal-fired MHD generators for baseload electrical production requires a detailed understanding of the plasma chemical and plasma dynamic characteristics of anticipated combustor and channel fluids. The report documents the development of a diffusion controlled heterogeneous condensation model and channel heat loss model for incorporation into the PACKAGE code used to calculate core flow plasma properties and generator efficiency. PACKAGE calculati… more
Date: August 1, 1979
Creator: Kolb, C. E.; Wormhoudt, J.; Yousefian, V.; Cheng, W.; Bien, F.; Dvore, D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Subseabed disposal program annual report, January-December 1978. Volume II. Principal investigator progress reports

Description: The topics covered in this report include: geologic siting considerations for the disposal of radioactive wastes into submarine geologic formations; geologic assessment of the MPG-1 regions Central North Pacific; site mapping; geotechnical aspects of subsurface seabed disposal; heat transfer, thermal and fluid physics in the deep ocean sediments; mechanical response predictive capability; sediment-seawater interaction at 300/sup 0/C, 500 bars; stability of actinides in chloride media; cannister… more
Date: October 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Validity of cubic law for fluid flow in a deformable rock fracture. Technical information report No. 23

Description: The validity of the cubic law for laminar flow of fluids through open fractures consisting of parallel planar plates has been established by others over a wide range of conditions with apertures ranging down to a minimum of 0.2 ..mu..m. The law may be given in simplified form by Q/..delta..h = C(2b)/sup 3/, where Q is the flow rate, ..delta..h is the difference in hydraulic head, C is a constant that depends on the flow geometry and fluid properties, and 2b is the fracture aperture. The validit… more
Date: October 1, 1979
Creator: Witherspoon, P.A.; Wang, J.S.Y.; Iwai, K. & Gale, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Subsurface investigations at the Roosevelt KGRA, Utah. Final report

Description: An investigation of the geothermal reservoir in the Roosevelt Hot Springs Known Geothermal Resource Area in Utah was carried out. The objective of this effort was to develop predictions for well production capacities, based on data taken during field tests and through use of a computer model. In turn, the production information could then be used in design optimization and economic analyses for development of the resource under study. Flow tests of a geothermal well, Utah State 14-2, were condu… more
Date: October 1, 1979
Creator: Butz, J. & Plooster, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Finite-element three-dimensional ground-water (FE3DGW) flow model - formulation, program listings and users' manual

Description: The Assessment of Effectiveness of Geologic Isolation Systems (AEGIS) Program is developing and applying the methodology for assessing the far-field, long-term post-closure safety of deep geologic nuclear waste repositories. AEGIS is being performed by Pacific Northwest Laboratory (PNL) under contract with the Office of Nuclear Waste Isolation (OWNI) for the Department of Energy (DOE). One task within AEGIS is the development of methodology for analysis of the consequences (water pathway) from … more
Date: December 1, 1979
Creator: Gupta, S.K.; Cole, C.R. & Bond, F.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Regional flow and solute transport modeling for site suitability. Part I

Description: The nature of regional flow systems in large sedimentary basins will largely determine the effectiveness of regional flow as a barrier to radionuclide escape from deep geologic repositories. The purpose of the work reported herein and the proposed future work is to develop a methodology for evaluating regional flow barriers by using numerical models. The Williston Basin was chosen as an archetype case for the regional modeling study. However, due to the simplified nature of the study, the resul… more
Date: December 1, 1979
Creator: Rowe, J. & Miller, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geochemical modeling at Raft River

Description: Chemical analysis of water from three depth regimes at the Raft River KGRA indicate the presence of at least two distinct hydrothermal fluids. One fluid predominates in the fracture system on the west side of the valley, known as the Bridge Fault. This fluid is characterized by low conductivity (2,000 to 3,000 ..mu..s) and 6 to 9 ..mu..g/ml F/sup -/. The second fluid, encountered in the center of the valley, appears to be associated with the Narrows Structure and is characterized by a conductiv… more
Date: January 1, 1979
Creator: Allen, C. A.; Chaney, R. E. & McAtee, R. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Flow near the outlet of a geothermal energy reservoir

Description: Steady, incompressible flow converging radially between two stationary, parallel plates was investigated both numerically and experimentally. Flow ranges investigated were laminar, turbulent, and transitional. For laminar flows at dimensionless radii (2r..sqrt pi nu../Qt) much greater than one the velocity profile becomes parabolic and invariant. At radii less than one a boundary layer character evolves with an approximately uniform core region and the boundary layer thickness decreases from on… more
Date: July 1, 1979
Creator: Murphy, H.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Numerical modeling of solute transport in groundwater

Description: Although the Galerkin finite element method has been used for problems of solute transport by flowing groundwater for nearly a decade, there are a number of problems which make its use as a routine modeling technique somewhat difficult. This report discussed three problem areas: boundary conditions, interfaces between materials of different permeabilities or radically different velocity vectors, and numerical instability. Methods are proposed for improving these problem areas and are demonstrat… more
Date: December 1, 1979
Creator: Miller, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary analytical repository flow model

Description: This memo describes a preliminary model that predicts the flow of dissolved nuclear waste in an underground repository. The model is based on the flow of water that enters regions of the repository in which the waste is actually contained; it is expected to be an improvement over the current approach that assumes the waste flow is proportional to total flow of water along various pathways. The repository flow model is intended for implementation in the TASC WASTE computer code. The model treats… more
Date: August 1, 1979
Creator: Oston, S.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary rate expressions for analysis of radionuclide migration resulting from fluid flow through jointed media

Description: A theoretical and experimental basis is being developed for analysis of radionuclide transport in jointed geologic media. Batch equilibration and rate experiments involving samples of Eleana argillite and tertiary silicic tuffs in contact with solutions containing Cs, Sr, or Pm indicated that most radionuclide sorption was associated with the surfaces of very small intergranular regions and that the rate of sorption was controlled by diffusion of the nuclides into such regions. Based on these e… more
Date: January 1, 1979
Creator: Erickson, K.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assessment of Effectiveness of Geologic Isolation Systems. Variable thickness transient ground-water flow model. Volume 2. Users' manual

Description: A system of computer codes to aid in the preparation and evaluation of ground-water model input, as well as in the computer codes and auxillary programs developed and adapted for use in modeling major ground-water aquifers is described. The ground-water model is interactive, rather than a batch-type model. Interactive models have been demonstrated to be superior to batch in the ground-water field. For example, looking through reams of numerical lists can be avoided with the much superior graphi… more
Date: December 1, 1979
Creator: Reisenauer, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Survey of near-field flow calculations for nuclear waste repositories NMA L21

Description: A survey of methods and codes which describe the flow of groundwater and the migration of radioactive waste in and about nuclear repositories was performed. A number of laboratories engaged in studies of waste migration and groundwater flow were visited in order to discuss the general problem and obtain reports of work being performed. The results of this survey are discussed. (DMC)
Date: November 1, 1979
Creator: Wilson, R.N. & Holland, D.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development and utilization of a two-dimensional model of transient fluid flow in a generic repository (OGRE)

Description: An existing time-dependent numerical model (OGRE) has been modified to examine the time frames associated with repressuring the formation rocks surrounding a generic nuclear waste repository following the operational period when wastes are being stored. The model is two-dimensional in the vertical plane, and assumes that the entire regime is saturated, but the repository is at one atmosphere during the operational period. For the physical and geometric parameters assumed, the results of a simul… more
Date: October 10, 1979
Creator: Korver, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary seabed disposal modeling studies

Description: In order to evaluate the fluid flow, heat transfer, and ion migration rates within a postulated sub-seafloor waste disposal site, preliminary calculations and computer aided simulations were performed. A base case site description was formulated and a representative set of physical parameters were defined. This information was used in an advanced transport computer code developed by Intera Environmental Consultants to simulate, in detail, site behavior. The simulation studies were divided into … more
Date: February 1, 1979
Creator: Nuttall, H.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hot dry rock energy extraction field test: 75 days of operation of a prototype reservoir at Fenton Hill, Segment 2 of Phase I

Description: Results from the first extensive field test of a man-made hot dry rock (HDR) geothermal reservoir in low permeability crystalline rock are presented. A reservoir with a small heat transfer area was utilized to study the characteristics of a prototype HDR system over a shortened lifetime. The resulting accelerated thermal drawdown was modeled to yield an effective area of 8000 m/sup 2/. In addition to the thermal effects, this test provided an opportunity to examine equipment operation, water pe… more
Date: April 1, 1979
Creator: Tester, J. W. & Albright, J. N. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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