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Fiscal Year 1997
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Irradiation Processing Department Monthly Record Report
2
Winter Fuels Report
2
ARM Facilities Newsletter
1
Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects Quarterly Report
1
Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipline Leak Detection Progress Report
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Annual Illness and Injury Surveillance Report
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Electric Power Monthly
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3,495 Matching Results
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Analysis of design practices for snubbers (report 3). [PWR, BWR]
In an effort to understand the expected performance of snubbers, a survey of current design methods was performed. Questionnaires were sent to the major snubber manufacturers requesting information on important phases of snubber analysis, testing, shipping, and handling. The elements of design considered in the questionnaire were derived from an evaluation of snubber failure histories and the performance requirements of snubber users.
Date:
January 12, 1978
Creator:
Butler, J.H.
Object Type:
Report
System:
The UNT Digital Library
Laser driven fusion fission hybrids
The role of the fusion-fission hybrid reactor (FFHR) as a fissile fuel and/or power producer is discussed. As long range options to supply the world energy needs, hybrid-fueled thermal-burner reactors are compared to liquid metal fast breeder reactors (LMFBR). A discussion of different fuel cycles (thorium, depleted uranium, and spent fuel) is presented in order to compare the energy multiplication, the production of fissile fuel, the laser efficiency and pellet gain requirements of the hybrid reactor. LLL has collaborated with Bechtel Corporation and with Westinghouse on the conceptual design of laser fusion power plants. The neutronic studies of these two designs are discussed. The operational parameters, such as energy multiplication, power density, burn-up and plutonium production as a function of time, are also presented.
Date:
July 12, 1977
Creator:
Hansen, L. F. & Maniscalco, J. A.
Object Type:
Article
System:
The UNT Digital Library
Technical-economic assessment of the production of methanol from biomass. Assessment of biomass resource and methanol market. Final research report
Detailed information is presented on the following: feasibility of biomass feedstocks for methanol production, biomass availability and costs, potential demand for methanol from biomass, comparison of potential methanol demand and supply, and market penetration assessment. (MHR)
Date:
July 12, 1979
Creator:
Wan, E. I.; Simmons, J. A.; Price, J. D. & Nguyen, T. D.
Object Type:
Report
System:
The UNT Digital Library
Cost of Federal tax credit programs to develop the market for industrial solar and wind energy technologies. Final report to Lawrence Livermore Laboratory, University of California. Volume 2: appendices
A study was made to estimate the impact tax credits (from Acts passed by Congress) would have on renewable energy investment and to estimate the net costs to the US Treasury of providing these tax credits. The appendices to this study are presented. Some investment and marketing penetration worksheets are presented on wind turbines, solar ponds, flat plates, evacuated tubes, and parabolic troughs. A market penetration and economic analysis program with test written for TI-59 programmable calculator with printer is presented. Data on the average $/kWh for each state are included for energy use (70 to 400/sup 0/F and electricity) and energy resource (total and direct solar and wind). Also included is an energy use processing program written for TI-59 programmable calculator with printer. (MCW)
Date:
November 12, 1981
Creator:
Downey, W.T.; Carey, H.; Dlott, E.; Frantzis, L.; McDonald, M.; Myer, L. et al.
Object Type:
Report
System:
The UNT Digital Library
Photon compression in cylinders
It has been shown theoretically that intense microwave radiation is absorbed non-classically by a newly enunciated mechanism when interacting with hydrogen plasma. Fields > 1 Mg, lambda > 1 mm are within this regime. The predicted absorption, approximately P/sub rf/v/sub theta/sup e/, has not yet been experimentally confirmed. The applications of such a coupling are many. If microwave bursts approximately > 5 x 10/sup 14/ watts, 5 ns can be generated, the net generation of power from pellet fusion as well as various military applications becomes feasible. The purpose, then, for considering gas-gun photon compression is to obtain the above experimental capability by converting the gas kinetic energy directly into microwave form. Energies of >10/sup 5/ joules cm/sup -2/ and powers of >10/sup 13/ watts cm/sup -2/ are potentially available for photon interaction experiments using presently available technology. The following topics are discussed: microwave modes in a finite cylinder, injection, compression, switchout operation, and system performance parameter scaling.
Date:
January 12, 1977
Creator:
Ensley, D.L.
Object Type:
Report
System:
The UNT Digital Library
Condensed Matter at High Shock Pressures
Experimental techniques are described for shock waves in liquids: Hugoniot equation-of-state, shock temperature and emission spectroscopy, electrical conductivity, and Raman spectroscopy. Experimental data are reviewed and presented in terms of phenomena that occur at high densities and temperatures in shocked He, Ar, N/sub 2/, CO, SiO/sub 2/-aerogel, H/sub 2/O, and C/sub 6/H/sub 6/. The superconducting properties of Nb metal shocked to 100 GPa (1 Mbar) and recovered intact are discussed in terms of prospects for synthesizing novel, metastable materials. Ultrahigh pressure data for Cu is reviewed in the range 0.3 to 6TPa (3 to 60 Mbar). 56 refs., 9 figs., 1 tab.
Date:
July 12, 1985
Creator:
Nellis, W. J.; Holmes, N. C.; Mitchell, A. C.; Radousky, H. B. & Hamilton, D.
Object Type:
Article
System:
The UNT Digital Library
Large aperture optical switching devices
We have developed a new approach to constructing large aperture optical switches for next generation inertial confinement fusion lasers. A transparent plasma electrode formed in low pressure ionized gas acts as a conductive coating to allow the uniform charging of the optical faces of an electro-optic material. In this manner large electric fields can be applied longitudinally to large aperture, high aspect ratio Pockels cells. We propose a four-electrode geometry to create the necessary high conductivity plasma sheets, and have demonstrated fast (less than 10 nsec) switching in a 5x5 cm aperture KD*P Pockels cell with such a design. Detaid modelling of Pockels cell performance with plasma electrodes has been carried out for 15 and 30 cm aperture designs.
Date:
December 12, 1983
Creator:
Goldhar, J. & Henesian, M.A.
Object Type:
Article
System:
The UNT Digital Library
ZrH-reactor-technology program. Progress report, April-June 1974
The report on the 2 kW(e) reactor-organic Rankine system was drafted. This report details the design parameters of a minimum weight, 2 kW(e) reactor-organic Rankine system. The system is designed for 5 years unattended life in space. The reactor produces 16.2 kW of thermal power with a NaK outlet temperature of 800/sup 0/F and a 200/sup 0/F ..delta..T. The reactor contains 19 fuel elements, 1.25'' in diameter by 10'' long, hydrided to an N/sub H/ of 6.35. The terrestrial applications effort was oriented towards the establishment of the feasibility of utilizing the zirconium hydride reactor technology in a subsea application for supplying electrical power to deep water, and other environmentally severe, oil well installations. The overall system concept is shown. The power system is composed of three basic modules (i.e., a reactor module, a generator module, and a heat rejection system) mounted on a barge. The barge is then towed to the installation site and submerged to mate with a previously installed seafloor foundation. An assembly/disassembly sequence was drafted detailing the steps required to assemble the reactor module and to disassemble it after 4 years of operations.
Date:
July 12, 1974
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Preliminary designs: passive solar manufactured housing. Technical status report
The criteria established to guide the development of the preliminary designs are listed. Three preliminary designs incorporating direct gain and/or sunspace are presented. Costs, drawings, and supporting calculations are included. (MHR)
Date:
May 12, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Hazardous-waste analysis plan for LLNL operations
The Lawrence Livermore National Laboratory is involved in many facets of research ranging from nuclear weapons research to advanced Biomedical studies. Approximately 80% of all programs at LLNL generate hazardous waste in one form or another. Aside from producing waste from industrial type operations (oils, solvents, bottom sludges, etc.) many unique and toxic wastes are generated such as phosgene, dioxin (TCDD), radioactive wastes and high explosives. One key to any successful waste management program must address the following: proper identification of the waste, safe handling procedures and proper storage containers and areas. This section of the Waste Management Plan will address methodologies used for the Analysis of Hazardous Waste. In addition to the wastes defined in 40 CFR 261, LLNL and Site 300 also generate radioactive waste not specifically covered by RCRA. However, for completeness, the Waste Analysis Plan will address all hazardous waste.
Date:
February 12, 1982
Creator:
Roberts, R.S.
Object Type:
Report
System:
The UNT Digital Library
Inertial confinement fusion (ICF). [Review of research progress]
The principal goal of the inertial confinement fusion program is the development of a practical fusion power plant in this century. Rapid progress has been made in the four major areas of ICF--targets, drivers, fusion experiments, and reactors. High gain targets have been designed. Laser, electron beam, and heavy ion accelerator drivers appear to be feasible. Record-breaking thermonuclear conditions have been experimentally achieved. Detailed diagnostics of laser implosions have confirmed predictions of the LASNEX computer program. Experimental facilities are being planned and constructed capable of igniting high gain fusion microexplosions in the mid 1980's. A low cost long lifetime reactor design has been developed.
Date:
October 12, 1977
Creator:
Nuckolls, J.
Object Type:
Article
System:
The UNT Digital Library
Conservative Differencing of the Electron Fokker-Planck Transport Equation
We need to extend the applicability and improve the accuracy of kinetic electron transport codes. In this paper, special attention is given to modelling of e-e collisions, including the dominant contributions arising from anisotropy. The electric field and spatial gradient terms are also considered. I construct finite-difference analogues to the Fokker-Planck integral-differential collision operator, which conserve the particle number, momentum and energy integrals (sums) regardless of the coarseness of the velocity zoning. Such properties are usually desirable, but are especially useful, for example, when there are spatial regions and/or time intervals in which the plasma is cool, so that the collision operator acts rapidly and the velocity distribution is poorly resolved, yet it is crucial that gross conservation properties be respected in hydro-transport applications, such as in the LASNEX code. Some points are raised concerning spatial differencing and time integration.
Date:
January 12, 1981
Creator:
Langdon, A. B.
Object Type:
Article
System:
The UNT Digital Library
CEREN concept: a case study of the French industrial energy data system
A case study of the French CEREN system is provided. The foundation of the system is outlined, that is, the concepts that ensure the systems comprehensiveness, detail, and manageability. The implementation of the system is emphasized, in particular, the data collection and data processing methodology. Applications of the CEREN energy information system are reviewed for analyzing energy use, cross-industry impacts, and social, and economic impacts of changing energy-use patterns. (MHR)
Date:
October 12, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Preliminary design report for OTEC stationkeeping subsystems (SKSS)
Lockheed Ocean Systems with IMODCO prepared these preliminary designs for OTEC Stationkeeping Subsystems (SKSS) under contract to NOAA in support of the Department of Energy OTEC program. The results of Tasks III, V, and VI are presented in this design report. The report consists of five sections: introduction, preliminary designs for the multiple anchor leg (MAL) and tension anchor leg (TAL), costs and schedule, and conclusions. Extensive appendixes provide detailed descriptions of design methodology and include backup calculations and data to support the results presented. The objective of this effort is to complete the preliminary designs for the barge-MAL and Spar-TAL SKSS. A set of drawings is provided for each which show arrangements, configuration, component details, engineering description, and deployment plan. Loads analysis, performance assessment, and sensitivity to requirements are presented, together with the methodology employed to analyze the systems and to derive the results presented. Life cycle costs and schedule are prepared and compared on a common basis. Finally, recommendations for the Commercial Plant SKSS are presented for both platform types.
Date:
December 12, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Heterodyne phase shift diagnostic for measuring atomic vapor density
We describe a technique for atomic density measurements. We generate and recombine frequency shifted laser beams producing beat signals on reference and signal detectors. Opacity in the signal detector leg is proportional to the phase difference between detector signals. 4 refs., 2 figs.
Date:
November 12, 1987
Creator:
Crane, J. K.; Paisner, J. A.; Johnson, M. A.; Story, T. W.; Barclay, C.; George, J. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Direct methods for seismic profiling. Final report
A coordinated research program in inverse problems was concluded. The program evolved from formulation to analytical solution to implemented computer algorithms. There were two main lines of research in this program: a velocity inversion method, with application to seismic exploration, and a physical optics inverse scattering method for reflector mapping, with application to nondestructive evaluation. In each case, computer algorithms based on the theoretical results were tested on real or testbed data from the area of the cited application. Research goals of both a theoretical and practical nature were achieved. 34 figures.
Date:
December 12, 1979
Creator:
Bleistein, N.; Cohen, J. K. & Hagin, F. G.
Object Type:
Report
System:
The UNT Digital Library
Coal-gasification-instrumentation program (PR 11734). Quarterly progress report, October 1, 1981-December 31, 1981
Research programs involving coherent anti-Stokes Raman and infrared spectroscopy techniques to measure the concentrations of minority species in coal gasification streams are considered. Equipment modifications to improve the spectral quality (lower line widths), fundamental studies of spectral lines of gases of interest, detection limits and a study of possible interferences (including subtracting some of these) are presented. Some studies involve laser-induced breakdown spectroscopy. This work involves two pulsed lasers and a timing system to introduce the appropriate delay. (LTN)
Date:
January 12, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Solar thermal small power systems study, program summary report. Phase II: study results
This Phase II Study of small solar power systems (SSPS) has been structured to determine conditions under which SSPS can be cost-effective sources of electric power in the US in the period 1985 to 2015. An extensive data base, which provides a discrete identification of all utility and industrial electric generating units up to and including 10 MW/sub e/ in rated capacity, has been prepared. This data base defines the market for which comparative evaluations are made of SSPS and alternative fossil-fueled power plants. The market penetration of SSPS is determined and the effect of economic incentives on accelerating the penetration is evaluated. The solar electric power system is evaluated as either a complete replacement for existing conventional electric power systems or as a repowering installation for boilers supplying steam to turbine-driven generators. The cost data used in the market penetration analysis are for a central receiver-type of small solar theral power system. While the market penetration discussed herein is for this type of SSPS, the sensitivity data in the report can be used to determine the market penetration of other types of solar thermal power systems (e.g., point focus distributed receiver) with different system costs.
Date:
July 12, 1979
Creator:
Lapedes, D.E.; Munjal, P.K. & Sitney, L.R.
Object Type:
Report
System:
The UNT Digital Library
Analysis of petroleum company investments in nonpetroleum energy sources. Book II. Appendices
Financial data from the analysis of investment strategies of US oil companies and the depth of their present and future investments in nonpetroleum energy sources are tabulated in these appendices. The nonpetroleum energy sources included in the study are: coal, oil shale, geothermal, and solar.
Date:
December 12, 1979
Creator:
Ryan, P. Jr. & Ryan, T.C.
Object Type:
Report
System:
The UNT Digital Library
Vacuum measurements on the Tandem Mirror Experiment Upgrade (TMX-U) fusion experiment
The gas inventory of the Tandem Mirror Experiment Upgrade (TMX-U) must be carefully controlled, if it is to successfully create various plasma configurations for thermal-barrier experiments designed to provide an improved performance for tandem-mirror experiments. This paper is a progress report on the calibration methods and pressure measurements of machine conditions deriving from recently improved neutral-beam gas control, and changes to the internal baffling geometry and the gettering system.
Date:
August 12, 1983
Creator:
Calderon, M. O.; Hunt, A. L.; Lang, D. D.; Nexsen, W. E.; Pickles, W. L. & Turner, W. C.
Object Type:
Article
System:
The UNT Digital Library
MFTF supervisory control and diagnostics system hardware
The Supervisory Control and Diagnostics System (SCDS) for the Mirror Fusion Test Facility (MFTF) is a multiprocessor minicomputer system designed so that for most single-point failures, the hardware may be quickly reconfigured to provide continued operation of the experiment. The system is made up of nine Perkin-Elmer computers - a mixture of 8/32's and 7/32's. Each computer has ports on a shared memory system consisting of two independent shared memory modules. Each processor can signal other processors through hardware external to the shared memory. The system communicates with the Local Control and Instrumentation System, which consists of approximately 65 microprocessors. Each of the six system processors has facilities for communicating with a group of microprocessors; the groups consist of from four to 24 microprocessors. There are hardware switches so that if an SCDS processor communicating with a group of microprocessors fails, another SCDS processor takes over the communication.
Date:
November 12, 1979
Creator:
Butner, D.N.
Object Type:
Article
System:
The UNT Digital Library
Development of a Plasma Streaming System for the Mirror Fusion Test Facility
The Plasma Streaming System (PSS) is an essential portion of the Mirror Fusion Test Facility (MFTF), scheduled for completion in October 1981. The PSS will develop a plasma density of at least 2 x 10/sup 12/ particles/cm/sup 3/ at the MFTF magnet centerline by injecting particles along the field lines. The plasma will have a midplane plasma radius as large as 40 cm with variable plasma particle energy and beam geometry. Minimum amounts of impurities will be injected, with emphasis on minimizing high Z materials. Each of the 60 PSS units will consist of a gun magnet assembly (GMA) and a power supply. Each GMA consists of a plasma streaming gun, a pulse magnet that provides variable beam shaping, and a fast reaction pulse gas valve.
Date:
November 12, 1979
Creator:
Holdsworth, T.; Clark, R.N.; McCotter, R.E.; Rossow, T.L. & Cruz, G.E.
Object Type:
Article
System:
The UNT Digital Library
Study of static reactive power compensators for high-voltage power systems. Final report, May 12, 1981
A general study of the application of static VAR compensators (SVC's) to high-voltage transmission systems has been performed. Considerable emphasis has been placed on improvements to synchronous stability, and it is shown that SVC's can provide significant benefits in terms of damping for unstable modes of oscillation and increases in transient stability limits. This report includes descriptions of static VAR compensators, technical and economic comparisons of different compensators, compensator models for system studies, comprehensive study procedures, study results for two small-scale systems, and guidelines for SVC application.
Date:
May 12, 1981
Creator:
Byerly, R.T.; Bennon, R.J.; Taylor, E.R. Jr. & Poznaniak, D.T.
Object Type:
Report
System:
The UNT Digital Library
X-ray backlighting sources of 4 to 10 keV for laser-fusion targets
High-intensity, short-duration x-ray pulses are necessary to diagnose the compression of laser film targets. Present target designs are such that backlighting sources ranging from a few thousand electron volts to 100 keV will be necessary. The desired source durations range from a few tens of picoseconds for flash radiography to several nanoseconds for streaked backlighting, and the source occurrence must be tightly synchronized to that of the target-irradiating laser pulse. For the latter reason, a laser-induced x-ray pulse is preferred. An initial study of the K lines of Ti, Ni, and Zn as possible backlighting sources was conducted. The conversion efficiency of laser light into line radiation was obtained as a function of laser intensity, pulse length, and wavelength. A threshold laser intensity for x-ray line production was identified. Information was obtained on the size and duration of the x-ray emission source, in relation to laser parameters. The experimental results, and their impact on backlighting capability for high-density laser function targets, are discussed.
Date:
May 12, 1981
Creator:
Rupert, V. C.; Matthews, D. L. & Koppel, L. N.
Object Type:
Article
System:
The UNT Digital Library