Serial/Series Title
Proceedings of the Workshop on Geothermal Reservoir Engineering
4
Fiscal Year 2000
3
Petroleum Supply Monthly
3
Annual Illness and Injury Surveillance Report
2
Fiscal Year 1999
2
Fiscal Year 2002
2
Science & Technology Review
2
A Novel Membrane Reactor for Direct Hydrogen Production From Coal Progress Report
1
Analysis of Devonian Black Shales in Kentucky for Potential Carbon Dioxide Sequestration and Enhanced Natural Gas Production Quarterly Report
1
Determination of Basalt Physical and Thermal Properties at Varying Temperatures, Pressures, and Moisture Contents Progress Report
1
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Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs for Phase 2 of the Secure Power Systems Professional project
This is the final report of Phase 2 of the Secure Power Systems Professional project, a 3 phase project. DOE will post to their website upon release.
Date:
August 26, 2013
Creator:
O'Neil, Lori R.; Assante, Michael; Tobey, D. H.; Conway, T. J.; Vanderhorst, Jr, T. J.; Januszewski, III, J. et al.
Object Type:
Report
System:
The UNT Digital Library
Bases, Assumptions, and Results of the Flowsheet Calculations for the Decision Phase Salt Disposition Alternatives
The High Level Waste (HLW) Salt Disposition Systems Engineering Team was formed on March 13, 1998, and chartered to identify options, evaluate alternatives, and recommend a selected alternative(s) for processing HLW salt to a permitted wasteform. This requirement arises because the existing In-Tank Precipitation process at the Savannah River Site, as currently configured, cannot simultaneously meet the HLW production and Authorization Basis safety requirements. This engineering study was performed in four phases. This document provides the technical bases, assumptions, and results of this engineering study.
Date:
March 26, 2001
Creator:
Dimenna, R. A.; Jacobs, R. A.; Taylor, G. A.; Durate, O. E.; Paul, P. K.; Elder, H. H. et al.
Object Type:
Report
System:
The UNT Digital Library
Determination of the concentration and isotopic composition of uranium in environmental air filters
For many years, Lawrence Livermore National Laboratory has collected monthly air-particulate filter samples from a variety of environmental monitoring stations on and off site. Historically the concentration and isotopic composition of uranium collected on these filters was determined by isotope dilution using a {sup 233}U spike and thermal ionization mass spectrometry (TIMS). For samples containing as little as 10 nanograms of uranium, ICP-MS is now used to make these measurements to the required level of precision, about 5% in the measured 235/238 and 233/238. Unless particular care is taken to control bias in the mass filter, variable mass bias limits accuracy to a few percent. Measurements of the minor isotopes 236 (if present) and 234 are also possible and provide useful information for identifying the source of the uranium. The advantage of ICP-MS is in rapid analysis, {approximately}12 minutes of instrument time per sample.
Date:
August 26, 1994
Creator:
Russ, G. P., III & Bazan, J. M.
Object Type:
Article
System:
The UNT Digital Library
Environmental Impacts from the Operation of Cooling Towers at SRP
An assessment has been made of the environmental effects that would occur from the operation of cooling towers at the SRP reactors. A more realistic numerical model of the cooling tower plume has been used to reassess the environmental impacts. The following effects were considered: (1) the occurrence of fog and ice and their impact on nearby structures, (2) drift and salt deposition from the plume, (3) the length and height of the visible plume, and (4) the possible dose from tritium.
Date:
June 26, 2001
Creator:
Smith, F. G., III
Object Type:
Report
System:
The UNT Digital Library
A 15-T Pulsed Solenoid for a High-Power Target Experiment
The MERIT experiment, to be run at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. Here, we describe the design and initial performance of the 15-T, liquid-nitrogen-precooled, copper solenoid magnet.
Date:
June 26, 2006
Creator:
Kirk, H. G.; Efthymiopoulos, I.; Fabich, A.; Haug, R.; Titus, P.; McDonald, K. T. et al.
Object Type:
Article
System:
The UNT Digital Library
Choice of Proton Driver Parameters for a Neutrino Factory
We discuss criteria for designing an optimal 'green field' proton driver for a neutrino factory. The driver parameters are determined by considerations of space charge, power capabilities of the target, beam loading and available RF peak power. A neutrino factory may be the best experimental tool to unravel the physics involved in neutrino oscillation and CP violation phenomena [1]. To have sufficient neutrino flux for acceptable physics results within 5 years requires about 10{sup 22} protons on target per year, which corresponds to 1-4 MW of proton beam power from the proton driver depending on the beam energy. In the past, there were individual proposals from different laboratories of a particular design of proton driver capable of delivering beam power from 2 to 4 MW, without consistent attention paid to the needs or requirements from the downstream systems. In this study, we try to identify the requirements from those down stream systems first, then see whether it is possible to design a proton driver to meet those needs. Such a study will also assist site specific proposals to further improve on their designs to better serve the need of a proton driver for neutrino factory applications.
Date:
June 26, 2006
Creator:
Kirk, H. G.; Berg, J. S.; Fernow, R. C.; Gallardo, J. C.; Simos, N.; Weng, W. T. et al.
Object Type:
Article
System:
The UNT Digital Library
A Proof-of-Principal Experiment for a High-Power Target System
The MERIT experiment, to be run at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. A muon collider or neutrino factory requires intense beams of muons, which are obtained from the decay of pions. Pion production by a proton beam is maximized by use of a high-Z target such as mercury. A liquid jet target has the advantages over a solid target that a flowing jet can readily remove heat and that it is immune to radiation damage. However the proton beam energy disrupts the jet and the system could be operationally unstable. Efficient capture of low-energy secondary pions (for transfer into the subsequent muon accelerator complex) requires that the target system be immersed in a strong magnetic field of solenoidal geometry. This magnetic field should stabilize the mercury flow in regions of nearly uniform field, but it perturbs the liquid metal jet as it enters the field. Hence, the behavior of the mercury …
Date:
June 26, 2006
Creator:
Kirk, H. G.; Samulyak, R.; Simos, N.; Tsang, T.; Efthymiopoulos, I.; Fabich, A. et al.
Object Type:
Article
System:
The UNT Digital Library
WREF 2012: The Past and Future Cost of Wind Energy
The future of wind power will depend on the ability of the industry to continue to achieve cost reductions. To better understand the potential for cost reductions, this report provides a review of historical costs, evaluates near-term market trends, and summarizes the range of projected costs. It also notes potential sources of future cost reductions. Our findings indicate that steady cost reductions were interrupted between 2004 and 2010, but falling turbine prices and improved turbine performance are expected to drive a historically low LCOE for current installations. In addition, the majority of studies indicate continued cost reductions on the order of 20%-30% through 2030. Moreover, useful cost projections are likely to benefit from stronger consideration of the interactions between capital cost and performance as well as trends in the quality of the wind resource where projects are located, transmission, grid integration, and other cost variables.
Date:
March 26, 2012
Creator:
Lantz, Eric; Hand, Maureen & Wiser, Ryan
Object Type:
Article
System:
The UNT Digital Library
Tank Monitor and Control System sensor acceptance test procedure. Revision 5
The purpose of this acceptance test procedure (ATP) is to verify the correct reading of sensor elements connected to the Tank Monitor and Control System (TMACS). This ATP is intended to be used for testing of the connection of existing temperature sensors, new temperature sensors, pressure sensing equipment, new Engraf level gauges, sensors that generate a current output, and discrete (on/off) inputs. It is intended that this ATP will be used each time sensors are added to the system. As a result, the data sheets have been designed to be generic. The TMACS has been designed in response to recommendations from the Defense Nuclear Facilities Safety Board primarily for improved monitoring of waste tank temperatures. The system has been designed with the capability to monitor other types of sensor input as well.
Date:
September 26, 1994
Creator:
Scaief, C. C., III
Object Type:
Report
System:
The UNT Digital Library
Processing and mechanical properties of silicon nitride formed by robocasting aqueous slurries
Robocasting is a new freeform fabrication technique for dense ceramics. It uses robotics to control deposition of ceramic slurries through an orifice. The optimization of concentrated aqueous Si{sub 3}N{sub 4} slurry properties to achieve high green density robocast bodies and subsequent high sintered densities was investigated. The effects of pH, electrolyte, additives and solids loading on the dispersion and rheological properties of Si{sub 3}N{sub 4} slurries were determined. The mechanical behavior of sintered robocast bars was determined and compared to conventionally produced silicon nitride ceramics.
Date:
January 26, 2000
Creator:
He, Guoping; Hirschfeld, Deidre A. & Cesarano, Joseph, III
Object Type:
Article
System:
The UNT Digital Library
Use of Modeling for Prevention of Solids Formation During Canyon Processing of Legacy Nuclear Materials at the Savannah River Site
The Savannah River Site (SRS) Environmental Management (EM) nuclear material stabilization program includes the dissolution and processing of legacy materials from various DOE sites. The SRS canyon facilities were designed to dissolve and process spent nuclear fuel and targets. As the processing of typical materials is completed, unusual and exotic nuclear materials are being targeted for stabilization. These unusual materials are often difficult to dissolve using historical flowsheet conditions and require more aggressive dissolver solutions. Solids must be prevented in the dissolver to avoid expensive delays associated with the build-up of insoluble material in downstream process equipment. Moreover, it is vital to prevent precipitation of all solids, especially plutonium-bearing solids, since their presence in dissolver solutions raises criticality safety issues. To prevent precipitation of undesirable solids in aqueous process solutions, the accuracy of computer models to predict precipitate formation requires incorporation of plant specific fundamental data. These data are incorporated into a previously developed thermodynamic computer program that applies the Pitzer correlation to derive activity coefficient parameters. This improved predictive model will reduce unwanted precipitation in process solutions at DOE sites working with EM nuclear materials in aqueous solutions.
Date:
February 26, 2002
Creator:
Rhodes, W. D.; Crooks, W. J., III & Christian, J. D.
Object Type:
Article
System:
The UNT Digital Library
Ne, Ar, Fe, and Cu Auger-electron production at National Synchrotron Light Source
Energetic K and L Auger electrons produced by focussed, filtered, broad-band synchrotron radiation have been measured at the x-ray ring of the National Synchrotron Light Source (NSLS). The x-ray beam was used to study inner-shell photoionization of Ne and Ar gas and Fe and Cu solid film targets. The Auger electrons were analyzed by means of a semi-hemispherical electrostatic electron spectrometer at the energy resolution of [approximately] 3 %. The electrons were detected at both 90[degree] and 0[degree] with respect to the photon beam direction. Broad distributions of the inner-shell photoelectrons were also observed, reflecting the incoming photon flux distribution. The Fe and Cu K Auger electron spectra were found to be very similar to the Ar K Auger electron spectra. This was expected, since deep inner-shell Auger processes are not affected by the outer valence electrons. Above 3 keV in electron energy, there have been few previous Auger electron measurements. 2 figs., 13 refs.
Date:
September 26, 1992
Creator:
Lee, D. H.; Johnson, B. M.; Guardala, N. A.; Price, J. L.; Glass, G. A.; Stumborg, M. F. et al.
Object Type:
Article
System:
The UNT Digital Library
Spatial Mapping of Cadmium Zinc Telluride Materials Properties and Electrical Response to Improve Device yield and Performance
Cadmium zinc telluride has experienced tremendous growth in its application to various radiation sensing problems over the last five years. However, there are still issues with yield, particularly of the large volume devices needed for imaging and sensitivity-critical applications. Inhomogeneities of various types and on various length scales currently prevent the fabrication of large devices of high spectral performance. This paper discusses the development of a set of characterization tools for quantifying these inhomogeneities, in order to develop improvement strategies to achieve the desired cadmium zinc telluride crystals for detector fabrication.
Date:
January 26, 1998
Creator:
van Scyoc, J. M.; Brunet, B. A.; Yoon, H.; Gilbert, T. S.; Hilton, N. R.; Lund, J. C. et al.
Object Type:
Article
System:
The UNT Digital Library
Sequestering Carbon Dioxide in Coalbeds
The authors' long term goal is to develop accurate prediction methods for describing the adsorption behavior of gas mixtures on solid adsorbents over complete ranges of temperature, pressure and adsorbent types. The major objectives of the project are to (1) measure the adsorption behavior of pure CO{sub 2}, methane, nitrogen and their binary and ternary mixtures on several selected coals having different properties at temperatures and pressures applicable to the particular coals being studied, (2) generalize the adsorption results in terms of appropriate properties of the coals to facilitate estimation of adsorption behavior for coals other than those studied experimentally, (3) delineate the sensitivity of the competitive adsorption of CO{sub 2}, methane and nitrogen to the specific characteristics of the coal on which they are adsorbed; establish the major differences (if any) in the nature of this competitive adsorption on different coals, and (4) test and/or develop theoretically-based mathematical models to represent accurately the adsorption behavior of mixtures of the type for which measurements are made. The specific accomplishments of this project during this reporting period are summarized in three broad categories outlining experimentation, model development, and coal characterization.
Date:
December 26, 2001
Creator:
Gasem, K. A. M.; Robinson, R. L., Jr. & Radovic, L. R.
Object Type:
Report
System:
The UNT Digital Library
Analytic technique for router comparison
A model for printed circuit boards which can be used to predict the probability that a router will successfully make a connection is presented. The model reflects certain characteristics of the circuit board that is being routed and the model incrementally changes as the board is routed. Routing procedures typically have certain parameters which influence selection of the set of paths that are explored, and determine the order of exploration. These parameters obviously influence the probability that a particular connection can be made. These parameters may also be used to formulate a model of the behavior of a particular routing procedure.
Date:
November 26, 1975
Creator:
Wilson, D. C. & Smith, R. J., II
Object Type:
Article
System:
The UNT Digital Library
Study of energetic electrons in the outer radiation-belt regions using data obtained by the LLL spectrometer on OGO-5 in 1968
An account is given of measurements of electrons made by the LLL magnetic electron spectrometer (60 to 3000 keV in seven differential energy channels) on the Ogo-5 satellite in the earth's outer-belt regions during 1968 and early 1969. The data were analyzed specifically to determine pitch-angle diffusion lifetimes as a function of energy in the L-range 2 to 5. As a part of this effort, the general dynamics of these regions were studied in terms of the time-dependent energy spectra, and pitch-angle distributions for the seven energy groups were obtained as a function of L with representative values presented for L = 2.5 to 6. The pitch-angle-diffusion results were used to analyze the dynamics of the electrons injected following the intense storms on October 31 and November 1, 1968, in terms of radial diffusion; the derived diffusion coefficients provide a quite reasonable picture of electron transport in the radiation belts. Both the radial- and pitch-angle-diffusion results are compared with earlier results. 53 references.
Date:
July 26, 1979
Creator:
West, H. I., Jr.; Buck, R.M. & Davidson, G.
Object Type:
Report
System:
The UNT Digital Library
Recent Advancements in Microwave Imaging Plasma Diagnostics
Significant advances in microwave and millimeter wave technology over the past decade have enabled the development of a new generation of imaging diagnostics for current and envisioned magnetic fusion devices. Prominent among these are revolutionary microwave electron cyclotron emission imaging (ECEI), microwave phase imaging interferometers, imaging microwave scattering and microwave imaging reflectometer (MIR) systems for imaging electron temperature and electron density fluctuations (both turbulent and coherent) and profiles (including transport barriers) on toroidal devices such as tokamaks, spherical tori, and stellarators. The diagnostic technology is reviewed, and typical diagnostic systems are analyzed. Representative experimental results obtained with these novel diagnostic systems are also presented.
Date:
March 26, 2002
Creator:
Park, H.; Chang, C. C.; Deng, B. H.; Domier, C. W.; Donni, A. J. H.; Kawahata, K. et al.
Object Type:
Report
System:
The UNT Digital Library
Electrolytic Recycle Method for the Treatment of Radioactive Nitric Acid Waste. A Status Report at the Termination of the Project at KAPL
A methed is descrihed for the treatment of radioactive neutralized nitric acid waste solutions. The process consists of electrolysis of sodium nitrate solutions and recycle the caustic formed to neutralize incoming nitric acid ate. Removal of a large fraction of the bulk inert substances by this method allows greater reductions in waste volume than conventional treatment by evaporation alone. Process chemistry studies show that a large fraction of the nitrate ion in alkaline solution can be electrolytically reduced to gaseous nitrogen reduction products at reasonable current efficiencies. Process engineering studies have resulted in the development of a prediction equation for the design of electrolysis cells used in the process. Pilot plant studies using cold'' nitric acid waste have demonstrated the feasibility of the electrolytic recycle methed. A preliminary cost estimate was performed which iadicates a cost of from 75 to 95 per initial gallon of waste processed. Basis for this estimate is a conceptual design of a plant capable of handling the highlevel waste produced in reprocessing one ton of uranium metal per day. These costs are considered reasonable in a nuclear power economy, and indications are that ultimate disposal of the concentrated waste in clay may be possible. (auth)
Date:
June 26, 1957
Creator:
Alter, H. W.; Barney, D. L.; Davidson, J. K.; Schafer, A. C., Jr. & Witt, F. J.
Object Type:
Report
System:
The UNT Digital Library
Small mirror fusion reactors
Basic requirements for the pilot plants are that they produce a net product and that they have a potential for commercial upgrade. We have investigated a small standard mirror fusion-fission hybrid, a two-component tandem mirror hybrid, and two versions of a field-reversed mirror fusion reactor--one a steady state, single cell reactor with a neutral beam-sustained plasma, the other a moving ring field-reversed mirror where the plasma passes through a reaction chamber with no energy addition.
Date:
May 26, 1978
Creator:
Carlson, G. A.; Schultz, K. R. & Smith, A. C., Jr.
Object Type:
Report
System:
The UNT Digital Library
Parametric studies of tandem mirror reactors
This report, along with its companion, An Improved Tandem Mirror Reactor, discusses the recent progress and present status of our tandem mirror reactor studies. This report presents the detailed results of parametric studies up to, but not including, the very new ideas involving thermal barriers.
Date:
April 26, 1979
Creator:
Carlson, G. A.; Boghosian, B. M.; Fink, J. H.; Myall, J. O. & Neef, W. S., Jr.
Object Type:
Report
System:
The UNT Digital Library
Impact and compliance: OSHA Carcinogen Policy
This document provides an examination of various aspects of the Occupational Safety and Health Administration (OSHA)Carcinogen Policy. To satisfy the dimensions of the Policy's broad, general nature, a two-fold approach was taken. Throughout, the focus is on the possible effects of the Policy's implementation, but this is first approached as it generally will effect research and compliance activities across broad industry sectors, while specific impacts on DOE are addressed separately. To overview and integrate these approaches, and to provide a quick reference for further information, an outline of information is presented. General or industry-wide applications are addressed both in the Summary and Overview of the Policy (Chapters I and II) and in the discussion of the Model Standard (Chapter V). Also included is a copy of the Policy itself in the General Industry Standards and interpretations Change 10. Sections specifically addressed to the major concerns of DOE and its contractors are a discussion of implications for action regarding the synthetic fuels program, a comparison of the OSHA Model Regulations and the FE OSH Manual Standards for Carcinogens, and finally, a list of known carcinogens in coal gasification/liquefaction. Together, these elements illustrate the broad scope of the policy's impact, which economic …
Date:
June 26, 1980
Creator:
Meyer, A. F., Jr.; Crowder, C.; Wisniewski, S.; Russell, T. & Senn, K.
Object Type:
Report
System:
The UNT Digital Library
Conformance Improvement Using Gels
This research project had two objectives. The first objective was to identify gel compositions and conditions that substantially reduce flow through fractures that allow direct channeling between wells, while leaving secondary fractures open so that high fluid injection and production rates can be maintained. The second objective was to optimize treatments in fractured production wells, where the gel must reduce permeability to water much more than that to oil.
Date:
September 26, 2002
Creator:
Seright, Randall S.; Schrader, Richard; Hagstrom, John, II; Wang, Ying; Al-Dahfeeri, Abdullah; Gary, Raven et al.
Object Type:
Report
System:
The UNT Digital Library
Conformance Improvement Using Gels
This research project had two objectives. The first objective was to identify gel compositions and conditions that substantially reduce flow through fractures that allow direct channeling between wells, while leaving secondary fractures open so that high fluid injection and production rates can be maintained. The second objective was to optimize treatments in fractured production wells, where the gel must reduce permeability to water much more than that to oil.
Date:
September 26, 2002
Creator:
Seright, Randall S.; Schrader; Hagstrom, John, II; Wang, Ying; Al-Dahfeeri, Abdullah & Marin, Amaury
Object Type:
Report
System:
The UNT Digital Library
RADIOLOGICAL HEALTH MANUAL--RADIATION PROTECTION STANDARDS AND REGULATIONS
None
Date:
March 26, 1964
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library