Serial/Series Title
Fiscal Year 2005
4
ARM Facilities Newsletter
3
Enhancement of Equilibrium Shift in Dehydrogenation Reactions Using a Novel Membrane Reactor Semi-Annual Report
2
Winter Fuels Report
2
Advanced, Soluble Hydroliquefaction and Hydrotreating Catalysts Annual Report
1
Application of Reservoir Characterization and Advanced Technology to Improve Recovery and Economics in a Lower Quality Shallow Shelf San Andres Reservoir Progress Report
1
Dense Media Cyclone Optimization Progress Report
1
Fiscal Year 1998
1
Fiscal Year 2006
1
Fiscal Year 2010
1
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LLNL Underground-Coal-Gasification Project. Quarterly progress report, July-September 1981
We have continued our laboratory studies of forward gasification in small blocks of coal mounted in 55-gal drums. A steam/oxygen mixture is fed into a small hole drilled longitudinally through the center of the block, the coal is ignited near the inlet and burns toward the outlet, and the product gases come off at the outlet. Various diagnostic measurements are made during the course of the burn, and afterward the coal block is split open so that the cavity can be examined. Development work continues on our mathematical model for the small coal block experiments. Preparations for the large block experiments at a coal outcrop in the Tono Basin of Washington State have required steadily increasing effort with the approach of the scheduled starting time for the experiments (Fall 1981). Also in preparation is the deep gasification experiment, Tono 1, planned for another site in the Tono Basin after the large block experiments have been completed. Wrap-up work continues on our previous gasification experiments in Wyoming. Results of the postburn core-drilling program Hoe Creek 3 are presented here. Since 1976 the Soviets have been granted four US patents on various aspects of the underground coal gasification process. These patents are …
Date:
November 9, 1981
Creator:
Stephens, D.R. & Clements, W. (eds.)
Object Type:
Report
System:
The UNT Digital Library
High-voltage test stand at Livermore
This paper describes the present design and future capability of the high-voltage test stand for neutral-beam sources at Lawrence Livermore Laboratory. The stand's immediate use will be for testing the full-scale sources (120 kV, 65 A) for the Tokamak Fusion Test Reactor. It will then be used to test parts of the sustaining source system (80 kV, 85 A) being designed for the Magnetic Fusion Test Facility. Following that will be an intensive effort to develop beams of up to 200 kV at 20 A by accelerating negative ions. The design of the test stand features a 5-MVA power supply feeding a vacuum tetrode that is used as a switch and regulator. The 500-kW arc supply and the 100-kW filament supply for the neutral-beam source are battery powered, thus eliminating one or two costly isolation transformers.
Date:
October 9, 1977
Creator:
Smith, M.E.
Object Type:
Article
System:
The UNT Digital Library
Preliminary design for Ocean Thermal Energy Conversion (OTEC) Stationkeeping Subsystem (SKSS). Task IV. Development and testing recommendations
The preliminary designs of Stationkeeping Subsystems (SKSS) for the OTEC Modular Experiment Plant are being prepared for a barge and spar platform. The SKSS selected by NOAA for the barge is a multiple anchor leg mooring with active tensioning (MAL), while that for the spar is a tension anchor leg (TAL) moor. The development and testing program required to provide design data and to validate performance predictions is described. Basic assumptions are made with regard to site characteristics, behavior of the SKSS and platform in the sea state, and characteristics of SKSS components. The test program is intended to provide the data necessary to confirm assumptions or to support design revisions. The testing program for the multiple anchor leg system is considered first, followed by the tension anchor leg program. Development and testing are recommended in the areas of materials, components and procedures which are beyond modest extrapolation of current ocean engineering practice. (WHK)
Date:
November 9, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Calculation of the energy-dependent efficiency of gridded /sup 3/He fast-neutron ionization chambers
Research and development activities under this contract proceeded along several lines, including development of a gas jet facility for the transport and isolation of fission product activities with half lives in the range T/sub 1/2/ less than or equal to 2 sec, studies on the factors affecting the energy and timing resolution of gridded /sup 3/He ionization detectors for delayed neutron spectroscopy and the development of simple models for calculation of the beta-decay characteristics of short-lived fission products near A = 90. Brief outlines of the activities in the areas are given. (WHK)
Date:
February 9, 1982
Creator:
Prussin, S.G.
Object Type:
Report
System:
The UNT Digital Library
High-temperature electrically conductive ceramic composite and method for making same
The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepared by blending the powders, pressing or casting the blend into the desired product configuration, and then sintering the casting or compact in an inert atmosphere. In the casting operation, calcium aluminate is preferably added to the admixture in place of a like quantity of zirconia for providing a cement to help maintain the integrity of the sintered product.
Date:
June 9, 1981
Creator:
Beck, D.E.; Gooch, J.G.; Holcombe, C.E. Jr. & Masters, D.R.
Object Type:
Patent
System:
The UNT Digital Library
Preparing the Alcator C bolometer system for use on MTX (Microwave Tokamak Experiment)
The Alcator C bolometer array has been modified to be compatible with electron cyclotron heating on the Microwave Tokamak Experiment. Fine wire mesh screens are mounted on the front of the bolometer collimator tubes to attenuate microwave heating of the bolometers. Structural changes eliminate openings in the seams of the bolometer housing, which represent pathways for microwaves to enter the system. This paper outlines the operational principles of the bolometer system, discusses the measured and predicted performance characteristics of the bolometer array, and includes a concise guide to the operation of the bolometer controller. 5 refs., 5 figs., 1 tab.
Date:
February 9, 1988
Creator:
Marinak, M.
Object Type:
Report
System:
The UNT Digital Library
Survey of digital imaging technology and applications at the Savannah River Site
An introduction to methods of digital image analysis is presented. Modern commercially available digital image analysis systems are described, along with applications that may be useful to programs at the Savannah River Site (SRS). Systems to aid inspection of tritium reservoir fill stems and a system to enhance inspection of radiographs of pinch weld closures of tritium reservoirs have already been developed at SRS. Modern digital analysis systems based on personal computers have been and are being procured for use in Savannah River Laboratory (SRL) programs, and are finding immediate application in several programs requiring quantitative metallography. It is argued that x-ray computed tomographic imaging, digitally-enhanced ultrasonic testing and acoustic microscopy are three techniques that would enhance not only the research and development efforts at SRL, but also may be applicable in production (for example, in pinch and reclamation welding of tritium reservoirs, and in reactor component inspection) as quality assurance and documentation tools. 21 refs.
Date:
October 9, 1989
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Brightness measurements on the Livermore high brightness test stand
Several techniques using small radius collimating pipes with and without axial magnetic fields to measure the brightness of an extracted 1 - 2 kA, 1 - 1.5 MeV electron beam will be described. The output beam of the High Brightness Test Stand as measured by one of these techniques is in excess of 2 x 10/sup 5/ amp/cm/sup 2//steradian. 5 refs., 4 figs.
Date:
May 9, 1985
Creator:
Caporaso, G.J. & Birx, D.L.
Object Type:
Article
System:
The UNT Digital Library
Core Power and Decay Time Limits for a Disabled LOFT ECCS
An analysis was done to determine at what LOFT total core power (nuclear plus decay power) the ECCS could be inoperable. The criteria used for the analysis was that the maximum fuel clad temperature should not exceed 1650/sup 0/F given a loss of coolant. Calculations for natural convection cooling of the fuel by air with an inlet temperature of 580/sup 0/F determined that the limiting core power is 25 kW (discounted by 15 percent to 20 percent for potential uncertainties). Shutdown times are listed for when the LOFT ECCS can be safely bypassed or disabled.
Date:
January 9, 1978
Creator:
Atkinson, S. A.
Object Type:
Report
System:
The UNT Digital Library
Advanced, Soluble Hydroliquefaction and Hydrotreating Catalysts Annual Report: 1990-1991
The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations. Heteropolyanions (HPAs) offer the opportunity to develop soluble forms of surface confined catalysts. HPAs are multi-functional catalysts that could be used to promote both hydroliquefaction and hydrotreating. In theory, these functions could be employed sequentially or simultaneously and could permit exceptional control of liquefaction reactions and reaction conditions. Thus, the current research program involves efforts to evaluate HPAs as soluble liquefaction nd hydrotreating catalysts, with the goal of developing soluble analogs of surface confined catalysts.
Date:
September 9, 1991
Creator:
Laine, Richard M & Stoebe, Thomas
Object Type:
Report
System:
The UNT Digital Library
Facilities projects performance measurement system. [Fuels and Materials Examination Facility (EMEF); Fusion Material Irradiation Test (FMIT) facility]
The two DOE-owned facilities at Hanford, the Fuels and Materials Examination Facility (FMEF), and the Fusion Materials Irradiation Test Facility (FMIT), are described. The performance measurement systems used at these two facilities are next described. (DLC)
Date:
October 9, 1979
Creator:
Erben, J.F.
Object Type:
Article
System:
The UNT Digital Library
Conversion of administration buildings entry to a greenhouse. Final status report
A project is briefly described that was to convert an administration building's entry to a greenhouse. The plan calls for extra insulation, a Trombe wall, berming, and double-glazed window units. The social and economic benefits of the project and qualifications of key people are listed. (LEW)
Date:
August 9, 1982
Creator:
Nolan, A.H.
Object Type:
Report
System:
The UNT Digital Library
Vacuum system for the Tandem Mirror Experiment
This paper is a sequel to the one prepared by Atkinson, et al., in which the authors described the vacuum system of Lawrence Livermore Laboratory's Tandem Mirror Experiment (TMX). We discuss here the final configuration, liquid nitrogen (LN/sub 2/) supply, and operation of the complete TMX vacuum system. The assembled vacuum system consists of two plug tanks with a volume of approximately 60 m/sup 3/ each and a center cell tank with a volume of approximately 10 m/sup 3/. In each plug tank there are 145 m/sup 2/ of titanium-gettered, LN/sub 2/-filled panels, which allow a pumping speed calculated to be 5 x 10/sup 7/ l/s for a period of 50 ms. The system maintains an operating pressure in the plasma chamber on the order of 10/sup -6/ Torr while 24 neutral-beam injectors are introducing 700 Torr l/s of hydrogen into the vacuum chamber.
Date:
November 9, 1979
Creator:
Richardson, M. J.; Atkinson, D. P. & Calderon, M. O.
Object Type:
Article
System:
The UNT Digital Library
Fundamental mechanisms in flue gas conditioning
The overall goal of this research project is to formulate a mathematical model of flue gas conditioning. This model will be based on an understanding of why ask properties, such as cohesivity and resistivity, are changed by conditioning. Such a model could serve as a component of the performance models of particulate control devices where flue gas conditioning is used. There are two specific objectives of this research project, which divide the planned research into two main parts. One part of the project is designed to determine how ash particles are modified by interactions with sorbent injection processes and to describe the mechanisms by which these interactions affect fine particle collection. The objective of the other part of the project is to identify the mechanisms by which conditioning agents, including chemically active compounds, modify the key properties of fine fly ash particles.
Date:
January 9, 1992
Creator:
Bush, P. V. & Snyder, T. R.
Object Type:
Report
System:
The UNT Digital Library
Evolution of the 400 MeV linac design
The basic premises of the conceptual design for the linac upgrade are pursued to establish lengths, gradients, power dissipation, etc., for the 400 MeV linac and matching section. The discussion is limited to accelerating and focusing components. Wherever values depend on the choice of the accelerating structure, the disk-and-washer structure is emphasized; the results are generally relevant to the side coupled cavity choice also.
Date:
November 9, 1987
Creator:
MacLachlan, J.A.
Object Type:
Report
System:
The UNT Digital Library
Geologic and geochemical studies of the New Albany Group (Devonian black shale) in Illinois to evaluate its characteristics as a source of hydrocarbons. Quarterly progress report, July 1-September 30, 1979
This project is a detailed analysis of the lithology, stratigraphy, and structure of the New Albany Group in Illinois to determine those characteristics of lithology, thickness, regional distribution, vertical and lateral variability, and deformation that are most relevant to the occurrence of hydrocarbons.
Date:
October 9, 1979
Creator:
Bergstrom, R.E. & Shimp, N.F.
Object Type:
Report
System:
The UNT Digital Library
Contributions to the INTOR workshop
This paper discusses the use of Nb/sub 3/Sn conductors as coils for toroidal fields in thermonuclear reactors. In particular, the mechanical properties are investigated for these conductors as well as substitute materials. 8 refs.
Date:
December 9, 1987
Creator:
Miller, J.R. (comp.)
Object Type:
Report
System:
The UNT Digital Library
Preliminary plan for the development of geothermal energy in the town of Gabbs, Nevada
The results of the analyses as well as a plan for geothermal development are described. The major findings and specific barriers to development that would have to be addressed are identified. Characteristics of the site significant to the prospect for geothermal development are described. These characteristics include physiography, demography, economy, and the goals and objectives of the citizens as they would relate to geothermal development. The geothermal resource evaluation is described. Based on available information, the reservoir is generally described, defining the depth to the reservoir, production rates of the existing water wells, water quality, and the resource temperature. Uses of the energy that seem appropriate to the situation both now and in the foreseeable future at Gabbs are described. The amounts and types of energy currently consumed, by end-user, are estimated. From this information, a conceptual engineering design and cost estimates are presented. Finally, the results of a life cycle analysis of the economic feasibility are discussed. A time-line chart shows the tasks, the time estimated to be required for each and the interrelatioships among the activities. The essential institutional requirements for geothermal energy development are discussed. These include the financial, environmental, legal and regulatory requirements. The main resource, …
Date:
November 9, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Debunching into a bucket of lower harmonic number
The adiabatic debunching of beam from buckets of higher harmonic number into waiting buckets of lower harmonic number is a critical step in the current scheme of operation for Tev I. The optimum choice of rf system parameters for this ''bunch coalescing'' process is not immediately obvious. In this note two examples are presented along with generalizations based upon them and experience with the Tevatron I design which can simplify the selection of appropriate parameters for different conditions.
Date:
December 9, 1987
Creator:
MacLachlan, J.A. & Griffin, J.E.
Object Type:
Report
System:
The UNT Digital Library
Theory and Fluid Simulations of Boundary Plasma Fluctuations
Theoretical and computational investigations are presented of boundary plasma microturbulence that take into account important effects of the geometry of diverted tokamaks--in particular, the effect of x-point magnetic shear and the termination of field lines on divertor plates. We first generalize our previous 'heuristic boundary condition' which describes, in a lumped model, the closure of currents in the vicinity of the x-point region to encompass three current-closure mechanisms. We then use this boundary condition to derive the dispersion relation for low-beta flute-like modes in the divertor-leg region under the combined drives of curvature, sheath impedance, and divertor tilt effects. The results indicate the possibility of strongly growing instabilities, driven by sheath boundary conditions, and localized in either the private or common flux region of the divertor leg depending on the radial tilt of divertor plates. We re-visit the issue of x-point effects on blobs, examining the transition from blobs terminated by x-point shear to blobs that extend over both the main SOL and divertor legs. We find that, for a main-SOL blob, this transition occurs without a free-acceleration period as previously thought, with x-point termination conditions applying until the blob has expanded to reach the divertor plate. We also derive …
Date:
January 9, 2007
Creator:
Cohen, R. H.; LaBombard, B.; LoDestro, L. L.; Rognlien, T. D.; Ryutov, D. D.; Terry, J. L. et al.
Object Type:
Article
System:
The UNT Digital Library
ENCAPSULATION OF PALLADIUM IN POROUS WALL HOLLOW GLASS MICROSPHERES
A new encapsulation method was investigated in an attempt to develop an improved palladium packing material for hydrogen isotope separation. Porous wall hollow glass microspheres (PWHGMs) were produced by using a flame former, heat treating and acid leaching. The PWHGMs were then filled with palladium salt using a soak-and-dry process. The palladium salt was reduced at high temperature to leave palladium inside the microspheres.
Date:
April 9, 2008
Creator:
Heung, L.; George Wicks, G. & Ray Schumacher, R.
Object Type:
Article
System:
The UNT Digital Library
Remaining Sites Verification Package for 132-D-2, 117-D Filter Building, Waste Site Reclassification Form 2005-024
The 132-D-2 site (117-D Filter Building) and associated below-grade ductwork were decommissioned and demolished in two phases in 1985 and 1986, with a portion of the rubble left in situ beneath clean fill at least 1 m (3.3 ft) thick. Decommissioning included removal of contaminated equipment, including filters. Residual concentrations support future land uses that can be represented by a rural-residential scenario and pose no threat to groundwater or the Columbia River based on RESRAD modeling.
Date:
May 9, 2006
Creator:
Carlson, R. A.
Object Type:
Report
System:
The UNT Digital Library
New Results on Leptonic B Meson Decays at BaBar
The authors present selected new results on leptonic B meson decays from the BABAR experiment: searches for the decays B{sup 0} {yields} {ell}{sup +}{ell}{sup -}, B{sup +} {yields} {ell}{sup +}{nu} and B{sup 0} {yields} {ell}{sup +}{tau}{sup -}, and B {yields} K{nu}{bar {nu}}, where {ell} = e or {mu}. They observe no evidence for these decays and set upper limits on their branching fractions.
Date:
June 9, 2008
Creator:
Kim, Hojeong
Object Type:
Article
System:
The UNT Digital Library
ELECTROCHEMICAL CORROSION TEST RESULTS FOR TANK 241-SY-102 SUPERNATE GRAB SAMPLES
This report describes the electrochemical corrosion scans and conditions for testing of SY-102 supernatant samples taken December 2004. The testing was performed because the tank was under a Justification for Continued Operation allowing the supernatant composition to be outside the chemistry limits of Administrative Control 5.16, 'Corrosion Mitigation program'. A new electrochemical working electrode of A516 Grade 60 carbon steel was used for each scan; all scans were measured against a saturated calomel electrode, with carbon counter electrodes, and all scans were carried out at 50 C. The samples were scanned twice, once as received and once sparged with argon to deoxygenate the sample. For those scans conducted after argon purging, the corrosion rates ranged from 0.012 to 0.019 mpy. A test for stress corrosion cracking was carried out on one sample (2SY-04-07) with negative results.
Date:
April 9, 2007
Creator:
JB, DUNCAN
Object Type:
Report
System:
The UNT Digital Library