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Leaching studies using PNL 76-68 glass beads and UO/sub 2/ rods with Umtanum basalt and Nugget sandstone

Description: We have performed a 440-day leaching experiment, Bead Leach II, using PNL 76-68 glass beads and simulated uranium fuel rods in the presence of repository host rocks. The experiment was conducted in a single pass continuous-flow apparatus consisting of 72 channels. The experimental conditions were: 25/sup 0/C and 75/sup 0/C, flow rates of 1, 10, and 300 m1/d, and leachant solutions consisting of simulated basalt groundwater, brine, and sodium bicarbonate solution. The two host rocks studied were… more
Date: February 1, 1984
Creator: Bazan, F.; Rego, J.; Failor, R. & Coles, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basalt waste isolation project. Quarterly report, April 1, 1981-June 30, 1981

Description: This document reports progress made in the Basalt Waste Isolation Project during the third quarter of fiscal year 1981. Efforts are described for the following programs of the project work breakdown structure: systems; waste package; site; repository; regulatory and institutional; test facilities; in situ test facilities.
Date: August 1, 1981
Creator: Deju, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear-waste-management. Quarterly progress report, July-September 1981

Description: Progress reports and summaries are presented for the following: high-level waste process development, alternate waste forms; TMI zeolite vitrification demonstration program; nuclear waste materials characterization center; TRU waste immobilization; TRU waste decontamination; krypton implantation; thermal outgassing; iodine-129 fixation; NWVP off-gas analysis; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; verification instrument… more
Date: December 1, 1981
Creator: Chikalla, T. D. & Powell, J. A. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of aged waste package and basalt on radioelement release

Description: Results of experiments are described that combine backfill, radioactive waste, and repository host rock in a single flowing groundwater stream in a manner analogous to a hydraulic breach of a waste repository. The experimental design is used to identify the chemical interactions that would occur if repository components were breached by flowing water. The results indicate that of three parameters studied, the alteration of the repository components as might occur upon aging had the most substan… more
Date: January 1, 1983
Creator: Seitz, M.G.; Vandegrift, G.F.; Bowers, D.L. & Gerding, T.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Modeling of nuclear waste disposal by rock melting

Description: Today, the favored option for disposal of high-level nuclear wastes is their burial in mined caverns. As an alternative, the concept of deep disposal by rock melting (DRM) also has received some attention. DRM entails the injection of waste, in a cavity or borehole, 2 to 3 kilometers down in the earth crust. Granitic rocks are the prime candidate medium. The high thermal loading initially will melt the rock surrounding the waste. Following resolidification, a rock/waste matrix is formed, which … more
Date: April 1, 1982
Creator: Heuze, F.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Waste/Rock Interactions Technology Program: the status of radionuclide sorption-desorption studies performed by the WRIT program

Description: The most credible means for radionuclides disposed as solid wastes in deep-geologic repositories to reach the biosphere is through dissolution of the solid waste and subsequent radionuclide transport by circulating ground water. Thus safety assessment activities must consider the physicochemical interactions between radionculides present in ground water with package components, rocks and sediments since these processes can significantly delay or constrain the mass transport of radionuclides in … more
Date: April 1, 1982
Creator: Serne, R. J. & Relyea, J. F.
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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Radiation damage studies on natural rock salt from various geological localities of interest to the radioactive waste disposal program

Description: As part of a program to investigate radiation damage in geological materials of interest to the radioactive waste disposal program, radiation damage, particularly radiation induced sodium metal colloid formation, has been studied in 14 natural rock salt samples. All measurements were made with equipment for making optical absorption and other measurements on samples, in a temperature controlled irradiation chamber, during and after 0.5 to 3.0 MeV electron irradiation. Samples were chosen for pr… more
Date: January 1, 1981
Creator: Levy, P.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Protocol for laboratory research on degradation, interaction, and fate of wastes disposed by deep-well injection: Final report

Description: The objective of this research investigation was to develop a laboratory protocol for use in determining degradation, interaction, and fate of organic wastes disposed in deep subsurface reservoirs via disposal wells. Knowledge of the ultimate fate of deep-well disposed wastes is important because provisions of the Resource Conservation and Recovery Act (RCRA) require that by August 1988, the Environmental Protection Agency (EPA) must show that the disposal of specified wastes by deep-well injec… more
Date: December 1, 1987
Creator: Collins, A. G. & Crocker, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Materials Characterization Center workshop on the leaching mechanisms of nuclear waste forms, December 7-8, 1982, Thousand Oaks, CA. Summary report

Description: Each of the six laboratories involved in the 3-yr leaching mechanism program presented a progress report on borosilicate glass studies. Presentations were made on various techniques for characterizing leached surfaces and on in situ characterization of leaching surfaces.
Date: January 1, 1985
Creator: Mendel, J. E. & Harker, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Survey of waste package designs for disposal of high-level waste/spent fuel in selected foreign countries

Description: This report presents the results of a survey of the waste package strategies for seven western countries with active nuclear power programs that are pursuing disposal of spent nuclear fuel or high-level wastes in deep geologic rock formations. Information, current as of January 1989, is given on the leading waste package concepts for Belgium, Canada, France, Federal Republic of Germany, Sweden, Switzerland, and the United Kingdom. All but two of the countries surveyed (France and the UK) have d… more
Date: September 1, 1989
Creator: Schneider, K.J.; Lakey, L.T. & Silviera, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical modeling of irreversible reactions in nuclear waste-water-rock systems

Description: Chemical models of aqueous geochemical systems are usually built on the concept of thermodynamic equilibrium. Though many elementary reactions in a geochemical system may be close to equilibrium, others may not be. Chemical models of aqueous fluids should take into account that many aqueous redox reactions are among the latter. The behavior of redox reactions may critically affect migration of certain radionuclides, especially the actinides. In addition, the progress of reaction in geochemical … more
Date: February 1, 1981
Creator: Wolery, T.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear waste management. Quarterly progress report, October through December 1980

Description: Progress reports and summaries are presented under the following headings: high-level waste process development; alternative waste forms; nuclear waste materials characterization center; TRU waste immobilization; TRU waste decontamination; krypton solidification; thermal outgassing; iodine-129 fixation; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; mobility of organic complexes of radionuclides in soils; waste management system… more
Date: March 1, 1981
Creator: Chikalla, T. D. & Powell, J. A. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear waste management. Quarterly progress report, April-June 1981

Description: Reports and summaries are presented for the following: high-level waste process development; alternative waste forms; TMI zeolite vitrification demonstration program; nuclear waste materials characterization center; TRU waste immobilization; TRU waste decontamination; krypton implantation; thermal outgassing; iodine-129 fixation; NWVP off-gas analysis; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; verification instrument develo… more
Date: September 1, 1981
Creator: Chikalla, T. D. & Powell, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste form/rock interaction leaching study using PNL 76-68 glass beads and Umtanum basalt. Part I

Description: A 440-day single-pass continuous-flow leaching experiment was conducted at LLNL from September 1980 to December 1981. The data obtained for only one-third of the experiment are presented. The laboratory and data analysis of the remaining portion is still in progress at this time and a second report will follow at the end of FY83. This report concerns itself with the study of PNL 76-68 glass beads interacting with crushed uranium flow basalt and a simulated basalt groundwater under controlled co… more
Date: March 31, 1983
Creator: Bazan, F.; Rego, J.; Failor, R. & Coles, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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X-ray photoemission spectroscopy and ion backscattering analysis of leached simulated waste glass containing UO/sub 3/

Description: UO/sub 3/ has been dissolved into several complex borosilicate glasses including Battelle simulated waste glasses 76-68, 3008, and 76-101. The glass surfaces were examined before and after leaching using x-ray photoemission spectroscopy and backscattered ion beam profiling. Samples leached in distilled water showed enhanced surface layer concentrations of several elements including uranium, titanium, zinc, iron and rare earths. For the case of uranium in 76-101, a simple experiment involving le… more
Date: January 1, 1980
Creator: Karim, D.P. & Lam, D.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interaction of groundwater and fresh basalt fissure surfaces and its effect on the migration of actinides

Description: Experiments are being performed at Argonne National Laboratory (ANL): (1) to identify interactions of radionuclides and repository components that effect nuclide migration, and (2) to assess changes in nuclide migration caused by modifications expected upon aging of the waste, clay backfill, and rock. The experiments are conducted with radioactive borosilicate glass, bentonite and mechanically fissured basalt rock in flowing water analogous to their configuration in a breach of a nuclear waste … more
Date: January 1, 1983
Creator: Vandegrift, G.F.; Bowers, D.L.; Gerding, T.J.; Fried, S.M.; Wilbur, C.K. & Seitz, M.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geochemical assessment of nuclear waste isolation. Report of activities during fiscal year 1982

Description: The status of the following investigations is reported: canister/overpack-backfill chemical interactions and mechanisms; backfill and near-field host rock chemical interactions mechanisms; far-field host rock geochemical interactions; verification and improvement of predictive algorithms for radionuclide migration; and geologic systems as analogues for long-term radioactive waste isolation.
Date: July 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Colloid migration in fractured media

Description: Field studies at the Nevada Test Site by researchers at Lawrence Livermore National Laboratory have demonstrated that radionuclides are being transported by colloidal material suspended in groundwater. This observation is counter to most predictions from contaminant transport models because the models assume adsorbed species are immobile. The purpose of this research is to quantify the transport processes for colloidal materials and develop the mechanistic understanding necessary to predict rad… more
Date: September 15, 1989
Creator: Hunt, J.R. (California Univ., Berkeley, CA (USA). Dept. of Civil Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear waste management. Quarterly progress report, January-March, 1981

Description: Reports and summaries are provided for the following programs: high-level waste process development; alternative waste forms; nuclear waste materials characterization center; TRU waste immobilization; TRU waste decontamination; krypton solidification; thermal outgassing; iodine-129 fixation; NWVP off-gas analysis; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; verification instrument development; mobility of organic complexes of… more
Date: June 1, 1981
Creator: Chikalla, T. D. & Powell, J. A. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basic data report for drillhole ERDA 9 (Waste Isolation Pilot Plant WIPP)

Description: ERDA 9 was drilled in eastern Eddy County, New Mexico, to investigate and test salt beds for the disposal of nuclear wastes. The hole was placed near the SE corner of section 20, T22S,R31E. It was drilled between April 28 and June 4, 1976, to a depth of 2889 ft (measured from a kelly bushing altitude of 3,420.4 ft MSL). The borehole encountered, from top to bottom, Holocene deposits (including artificial fill) of 22 ft, the Pleistocene Mescalero Caliche (5 ft) and Gatuna Formation (27 ft), 9 ft… more
Date: January 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A literature review of actinide-carbonate mineral interactions

Description: Chemical retardation of actinides in groundwater systems is a potentially important mechanism for assessing the performance of the Waste Isolation Pilot Plant (WIPP), a facility intended to demonstrate safe disposal of transuranic waste. Rigorous estimation of chemical retardation during transport through the Culebra Dolomite, a water-bearing unit overlying the WIPP, requires a mechanistic understanding of chemical reactions between dissolved elements and mineral surfaces. This report represent… more
Date: October 1, 1993
Creator: Stout, D. L. & Carroll, S. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tracer studies of radionuclide migration in fractured rock at a scale of 1 meter

Description: The Large Block Tracer Test is a series of experiments to study the migration of radionuclides through fractures in rock at the scale of one meter. The separate effects to be considered are sorption onto minerals within the rock matrix; diffusion of radionuclide species through the rock matrix, diffusion and hydrodynamic dispersion within the fracture; and the effect of heterogeneity in the fluid flow field (also known as macro dispersion or channeling). The rock fractures to be used have natur… more
Date: March 1, 1995
Creator: Rundberg, R. S.; Travis, B.; Vandergraaf, T. T. & Drew, D. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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