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Design analysis and optimization of self-cooled lithium blankets and shields

Description: A study of self-cooled lithium blankets was carried out to define the performance of these blankets and to determine the potential to operate at the maximum possible values of the performance parameters. The main design parameters considered during the course of the study were the tritium breeding ratio, the blanket energy multiplication factor, the energy fraction lost to the shield, the total blanket thickness, the reflector material selection, and the compositions of the different blanket zo… more
Date: February 1, 1988
Creator: Gohar, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of glass formulations containing high-level nuclear wastes

Description: The effects of Na/sub 2/O, K/sub 2/O, B/sub 2/O/sub 3/, TiO/sub 2/, CaO, and ZnO contents were determined on the leach rate and homogeneity of a potential high-level waste glass. It was found that the two characteristics are in competition, with variations of CaO having the greatest effect and TiO/sub 2/ having the least effect. Boron oxide content is important in control of Na/sub 2/MoO/sub 4/ formation and separation. Sodium molybdate formation can also be controlled by the use of reducing ag… more
Date: February 1, 1978
Creator: Ross, W.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of an Effective Transport Media for Juvenile Spring Chinook Salmon to Mitigate Stress and Improve Smolt Survival During Columbia River Fish Hauling Operations, 1985 Final Report.

Description: Selected transport media consisting of mineral salt additions (Na/sup +/, Cl/sup -/, Ca/sup + +/, PO/sub 4//sup -3/, HCO/sub 3//sup -/, and Mg/sup + +/), mineral salts plus tranquilizing concentrations of tricaine methane sulfonate (MS-222), or MS-222 alone were tested for their ability to mitigate stress and increase smolt survival during single and mixed species hauling of Columbia River spring chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Salmo gairdneri). Successful stress … more
Date: February 1, 1985
Creator: Wedemeyer, Gary A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigations of several interference effects in high frequency plasmas of analytical importance

Description: Investigations of the extent to which certain inter-element or interference effects occur in a radiofrequency-excited inductively coupled plasma (ICP) are reported. Under conditions normally employed for analytical purposes, it is shown that: (a) two solute vaporization interferences often observed in flames are eliminated or reduced to negligible proportions in the plasma; (b) increasing concentrations of an easily ionizable element (Na) up to concentrations of 6900 ..mu..g/ml exerted an unusu… more
Date: February 1, 1977
Creator: Larson, G.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of alternate fuels. Report No. 2. Analysis of basic refractories degraded by residual oil combustion products

Description: Industrial conversion in the U.S. to alternate fuels from natural gas is presently under way and will accelerate rapidly as a result of gas curtailments and National policy considerations. Currently the prime alternate fuels are distillate and residual oils and coal. Conversion to residual oils or coal for high-temperature process heat applications is anticipated to result in accelerated refractory and insulation corrosion and degradation due to reactions between fuel impurities and the ceramic… more
Date: February 1, 1978
Creator: Wei, G. C. & Tennery, V. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laboratory evaluation of limestone and lime neutralization of acidic uranium mill tailings solution. Progress report

Description: Experiments were conducted to evaluate a two-step neutralization scheme for treatment of acidic uranium mill tailings solutions. Tailings solutions from the Lucky Mc Mill and Exxon Highland Mill, both in Wyoming, were neutralized with limestone, CaCO/sub 3/, to an intermediate pH of 4.0 or 5.0, followed by lime, Ca(OH)/sub 2/, neutralization to pH 7.3. The combination limestone/lime treatment methods, CaCO/sub 3/ neutralization to pH 4 followed by neutralization with Ca(OH)/sub 2/ to pH 7.3 res… more
Date: February 1, 1984
Creator: Opitz, B.E.; Dodson, M.E. & Serne, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical studies of Cerro Prieto brines chemical equilibria

Description: A chemical equilibrium model is used, implemented in a compact FORTRAN package called HITEQ, to investigate possible mineral deposition related to prereinjection treatment of Cerro Prieto brines for silica removal. Large saturation ratios of the treated brines with respect to several minerals are indicated by these computations. As a remedy, an inexpensive CO/sub 2/ removal scheme aimed at inhibiting carbonate mineral precipitation is proposed. This scheme is quantitatively discussed with the a… more
Date: February 1, 1980
Creator: Iglesias, E.R. & Weres, O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Intersecting faults and sandstone stratigraphy at the Cerro Prieto geothermal field

Description: The northwest-southeast trending Cerro Prieto fault is part of a major regional lineament that extends into Sonaro and has characteristics of both a wrench fault and an oceanic transform fault. The distribution of lithologies and temperature within the field was studied by comparing data from well cuttings, cores, well logs, and geochemical analyses. Across the earliest developed portion of the field, in particular along a 1.25-km northeast-southwest section from well M-9 to M-10, interesting c… more
Date: February 1, 1980
Creator: Vonder Haar, S. & Howard, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A comprehensive review of the XRD data of the primary and secondary phases present in the BSCCO superconductor system

Description: X-ray powder patterns for the phases in the CaO-SrO-PbO ternary system, along with the corresponding crystal structures, were obtained from the literature and from the Powder Diffraction File (PDF). Available X-ray diffraction (XRD) patterns were compared with each other and, when possible, with a calculated pattern for each phase, yielding a recommended reference pattern. The simulated powder patterns presented here deal with the phases found within the (Ca,Sr){sub 2}PbO{sub 4} solid solution … more
Date: February 1, 1992
Creator: Reardon, B.J. & Hubbard, C.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clean Coal Technology III (CCT III) 10 MW demonstration of gas suspension absorption

Description: The Gas Suspension Absorber (GSA) system brings coal combustion gases into contact with a suspended mixture of solids, including sulfur-absorbing lime. After the lime absorbs the sulfur pollutants, the solids are separated from the gases in a cyclone device and recirculated back into the system where they capture additional sulfur pollutant. The cleaned flue gases are sent through a dust collector before being released into the atmosphere. The key to the system's superior economic performance w… more
Date: February 7, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhancing the use of coals by gas reburning-sorbent injection

Description: Clean Coal Technology implies the use of coal in an environmentally acceptable manner. Coal combustion results in the emission of two types of acid rain precursors: oxides of sulfur (SO{sub x}) and oxides of nitrogen (NO{sub x}). This Clean Coal Technology project will demonstrate a combination of two developed technologies to reduce both NO{sub x} and SO{sub x} emissions: gas reburning and calcium based dry sorbent injection. The demonstrations will be conducted on two pre-NSPS utility boilers… more
Date: February 7, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of the dissolution of geothermal scale

Description: Samples of geothermal scale formed from Magmamax No. 1 and Woolsey No. 1 wells in the Imperial Valley, Calif., were exposed to concentrated and dilute solutions of common laboratory reagents. The time of exposure and temperature of the reagent were also varied. Several reagents easily dissolved significant amounts of the scale. An in situ test was performed with marginal success.
Date: February 4, 1980
Creator: Deutscher, S.B.; Ross, D.M.; Quong, R. & Harrar, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carbonate scaling - literature review and analysis

Description: A survey of the literature on carbonate scaling is presented as it affects geothermal fluid systems. The geothermal brine, as the fluid is called, contains a number of chemical constituents which have leached into it from the reservoir rock. As the hot fluid is withdrawn through wells, a flow of steam, water, or a mixture of steam and water, results. If the well flows at a high enough rate, some brine will flash to steam because of the pressure drop, resulting in the steam/water flow mixture. T… more
Date: February 19, 1979
Creator: Pepper, J.C. & Larkin, B.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A novel approach to highly dispersing catalytic materials in coal for gasification

Description: This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic benefits by reducing the amount of K{sub 2}CO{sub 3} required for high coal char reactivities. As was shown in previous reports, coal loading with p… more
Date: February 10, 1992
Creator: Abotsi, G.M.K. & Bota, K.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Identification of the mineral phases responsible for cementation of Lurgi spent oil shale

Description: The purpose of this study is to investigate the mineralogical character of the cements that are responsible for the increased strength of the spent oil shale. Several techniques to identify the nature of the cementing agents have been used in this study. X-ray diffraction was used to identify mineral dissolution and formation; scanning electron microscopy (SEM) was used to observe the cementing agents; energy dispersive X-ray analysis (EDXA) was used to provide information on the elemental comp… more
Date: February 1, 1991
Creator: Brown, M.; Huntington, G. & Brown, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology and fracture system at Stripa. Technical information report No. 21

Description: The Stripa test site has been excavated in granitic rock between 338 m and 360 m below the ground surface, and is located under the north limb of an ENE-plunging synclinal structure. The granitic rocks, in the areas mapped, are of Archean age and are dominated by a reddish, medium-grained, massive monzogranite that shows varying degrees of deformation. The granitic rocks have been intruded by diabase (dolerite) and pegmatite dikes. Surface and subsurface mapping shows that the Stripa granite is… more
Date: February 1, 1979
Creator: Olkiewicz, A.; Gale, J.E.; Thorpe, R. & Paulsson, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Aspects of photoionization of impurities and electron transfer in ionic crystals]

Description: Spectral evidence was found for photoionization in spectra of Eu[sup 2+] and Sm[sup 3+] in BaF[sub 2]; Ce[sup 3+] was also studied in BaF[sub 2], CaF[sub 2], and SrF[sub 2]. Two-photon spectroscopy of forbidden transitions (zero-phonon lines) was extended from NaF: Cu[sup +] to Mn[sup 4+] in Cs[sub 2]GeF[sub 6] and to MgO:Ni[sup 2+].
Date: February 10, 1993
Creator: McClure, D.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Direct oxide reduction (DOR) solvent salt recycle in pyrochemical plutonium recovery operations

Description: One method used at Los Alamos for producing plutonium metal is to reduce the oxide with calcium metal in molten CaCl/sub 2/ at 850/sup 0/C. The solvent CaCl/sub 2/ from this reduction step is currently discarded as low-level radioactive waste because it is saturated with the reaction by-product, CaO. We have developed and demonstrated a molten salt technique for rechlorinating the CaO, thereby regenerating the CaCl/sub 2/ and incorporating solvent recycle into the batch PuO/sub 2/ reduction pro… more
Date: February 1, 1987
Creator: Fife, K. W.; Bowersox, D. F.; Davis, C. C. & McCormick, E. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calcite solubility in simulated geothermal brines

Description: The deposition of scale on geothermal piping surfaces has been recognized as a cause of increased pressure drop and diminished fluid flow. The two most common scales encountered in the geothermal energy field are silica and calcite. The main purpose of this study was to obtain accurate, reliable calcite solubility data in brines similar to natural geothermal brines over the temperature range of most known exploitable geothermal resources. In addition, geothermal fluid equilibrium modeling effor… more
Date: February 1, 1987
Creator: Pool, K.H.; Raney, P.J. & Shannon, D.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phase relations in crystalline ceramic nuclear waste forms the system UO/sub 2 + x/-CeO/sub 2/-ZrO/sub 2/-ThO/sub 2/ at 1200/sup 0/C in air

Description: Steady-state phase relations in the system UO/sub 2 + x/-CeO/sub 2/-ZrO/sub 2/-ThO/sub 2/ were determined for application to phase relations in the high-level crystalline ceramic nuclear waste form Supercalcine-Ceramics. Samples were treated at 1200/sup 0/C at an oxygen partial pressure of 0.21 atm and a total pressure of 1 atm. Phase assemblages were found to be composed of cubic solid solutions of the flourite structure type, solid solutions based on ZrO/sub 2/, and orthorhombic solid solutio… more
Date: February 15, 1981
Creator: Pepin, J.G. & McCarthy, G.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced research and technology, direct utilization: recovery of minerals from coal fly ash. Fossil energy program. Technical progress report, 1 October 1980-31 December 1980

Description: The purpose of this research is to develop methods to process fly ash for the separation and use of an iron-rich fraction, for the recovery of metals, primarily Al and Ti, and for use of the process residues. Research during this report period of the HiChlor process for the extraction of alumina and titania by high-temperature chlorination of a fly ash-reductant mixture included investigation of the simulation of the reactions as a design tool, the assembly of a unit to measure reaction kinetic… more
Date: February 1, 1981
Creator: Burnet, G.; Weiss, S. J. & Murtha, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of glass compositions for immobilization of SRP waste

Description: An improved composition of glass frit, termed 411, was developed for the immobilization of SRP high-level radioactive waste. In comparison with frit compositions previously studied, the new composition offers the following advantages: the amount of ferrite-spinel crystals formed is greatly decreased because the TiO/sub 2/ content is much lower; a higher lithium-to-sodium ratio decreases the viscosity of glass mixtures containing high-aluminum waste. The compositional studies leading to the deve… more
Date: February 1, 1979
Creator: Plodinec, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of selected neutralizing agents for the treatment of uranium tailings leachates. Laboratory progress report

Description: Laboratory experiments were conducted to evaluate the performance of selected neutralizing agents for the treatment of uranium tailings solutions. Highly acidic tailings solutions (pH<2) from the Lucky Mc Mill in Gas Hills, Wyoming and the Exxon Highlands Mill near Casper, Wyoming were neutralized to a pH of 7 or greater using seven neutralizing agents. Reagents used included: Fly Ash from Boardman Coal Plant, Boardman, Oregon; Fly Ash from Wyodak Coal Plant, Gillette, Wyoming; Calcium carbo… more
Date: February 1, 1983
Creator: Sherwood, D.R. & Serne, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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