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89,923 Matching Results

Start Over Access Open Access Day 13th

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(open access)

Site development plan for Oak Ridge National Laboratory, Martin Marietta Energy Systems

The Oak Ridge National Laboratory (ORNL) is responsible for developing new and environmentally acceptable energy technologies that will offer the nation safe options for energy supply and efficient systems for energy use. Martin Marietta Energy Systems, Inc., (Energy Systems) operates ORNL under a management and operating contract. The purpose of the audit was to review and evaluate the effectiveness of site development planning activities at ORNL. A site development plan is a long-range master plan for the acquisition, development, utilization, and disposal of land and physical facilities at a specific US Department of Energy (DOE) facility. ORNL did not have a current site development plan and had not submitted updates to the old plan. This condition existed because the DOE Field Office, Oak Ridge (OR), and ORNL management had not implemented their responsibilities set forth in applicable DOE orders for site development planning. As a result, DOE had no assurance that ORNL real property holdings would be planned and developed economically and efficiently.

Date: September 13, 1991

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

MPS II drift-chamber system

A new system of detectors (MPS II) which has been installed and operated in the Brookhaven National Laboratory Multiparticle Spectrometer (MPS), consisting of short drift distance drift chambers is briefly described. (WHK)

Date: May 13, 1982

Creator: Etkin, A.; Eiseman, S. & Foley, K.J.

Object Type: Article

System: The UNT Digital Library

(open access)

Plasma Separation Process: Betacell (BCELL) code: User's manual. [Bipolar barrier junction]

The emergence of clearly defined applications for (small or large) amounts of long-life and reliable power sources has given the design and production of betavoltaic systems a new life. Moreover, because of the availability of the plasma separation program, (PSP) at TRW, it is now possible to separate the most desirable radioisotopes for betacell power generating devices. A computer code, named BCELL, has been developed to model the betavoltaic concept by utilizing the available up-to-date source/cell parameters. In this program, attempts have been made to determine the betacell energy device maximum efficiency, degradation due to the emitting source radiation and source/cell lifetime power reduction processes. Additionally, comparison is made between the Schottky and PN junction devices for betacell battery design purposes. Certain computer code runs have been made to determine the JV distribution function and the upper limit of the betacell generated power for specified energy sources. A Ni beta emitting radioisotope was used for the energy source and certain semiconductors were used for the converter subsystem of the betacell system. Some results for a Promethium source are also given here for comparison. 16 refs.

Date: November 13, 1987

Creator: Taherzadeh, M.

Object Type: Report

System: The UNT Digital Library

(open access)

Capital requirements for the transportation of energy materials: 1979 ARC estimates. Draft final report

This report contains TERA's estimates of capital requirements to transport natural gas, crude oil, petroleum products, and coal in the United States by 1990. The low, medium, and high world-oil-price scenarios from the EIA's Mid-range Energy Forecasting System (MEFS), as used in the 1979 Annual Report to Congress (ARC), were provided as a basis for the analysis and represent three alternative futures. TERA's approach varies by energy commodity to make best use of the information and analytical tools available. Summaries of transportation investment requirements through 1990 are given. Total investment requirements for three modes (pipelines, rails, waterways and the three energy commodities can accumulate to a $49.9 to $50.9 billion range depending on the scenario. The scenarios are distinguished primarily by the world price of oil which, given deregulation of domestic oil prices, affects US oil prices even more profoundly than in the past. The high price of oil, following the evidence of the last year, is projected to hold demand for oil below the recent past.

Date: August 13, 1980

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

HAZARDS SUMMARY REPORT ON NUCLEAR PHYSICS LABORATORY AT CANEL

ON NUCLEAR PHYSICS LABORATORY AT CANEL. The critical experiment facility at CANEL is described. Information of the mature of experimental assemblies and operations is included. Safety features of the building, equipment, and operations are pointed out. Possible accidents and the resulting hazards to surrounding areas are analyzed. The make-up of the surrounding area is described. (M.C.G.)

Date: October 13, 1955

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Safety Analysis (SA) of the Hazardous Waste Disposal Facilities (Buildings 514, 612, and 614) at the Lawrence Livermore Laboratory

This safety analysis was performed for the Manager of Plant Operations at LLL and fulfills the requirements of DOE Order 5481.1. The analysis was based on field inspections, document review, computer calculations, and extensive input from Waste Management personnel. It was concluded that the quantities of materials handled do not pose undue risks on- or off-site, even in postulated severe accidents. Risks from the various hazards at these facilities vary from low to moderate as specified in DOE Order 5481.1. Recommendations are made for additional management and technical support of waste disposal operations.

Date: December 13, 1979

Creator: Odell, B.N. & Toy, A.J.

Object Type: Report

System: The UNT Digital Library

(open access)

Gaussian dispersion and dosimetric modeling sensitivity to area-specific 1982--86 meteorological data collected at the Savannah River Site

Radiological dose to the offsite maximum individual or the 50-mile population is often estimated assuming that operational atmospheric releases originate from the geographical center of the Savannah River Site. Historically, meteorological data collected from instrumentation on the H-Area tower have been utilized to estimate atmospheric dispersion from centrally located releases.'' This paper examines the effect on dose predictions using meteorological data from seven onsite towers located at A, C, D, F, H, K, and P areas to describe meteorological conditions at the central release location. Maximum individual dose estimates using both annual and short-term average air concentrations are well within 20% of the mean prediction. Population dose estimates are also within 20% of the mean prediction. Population dose estimates are also within 20% of the mean except for two-hour doses using H-Area meteorological data, which is less than the average estimate by about 30%.

Date: September 13, 1991

Creator: Hamby, D. M. & Parker, M. J.

Object Type: Report

System: The UNT Digital Library

captions transcript

[News Clip: Coppell - Murder]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: August 13, 1995, 5:30 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Severe wx]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: May 13, 1994

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Hoyt]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: May 13, 1994, 5:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Garland cop]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: September 13, 1994, 6:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

(open access)

Energy calibration scheme for acoustic emission

The calibration technique described is an attempt to determine the actual energy release from the events causing emission bursts in beryllium and to quantitatively evaluate the effects of specimen geometry on the apparent energy per burst. (GHT)

Date: September 13, 1977

Creator: Adams, R. O. & Heiple, C. R.

Object Type: Article

System: The UNT Digital Library

(open access)

Urban Options Solar Greenhouse Project. Semi-annual technical progress report

The design changes and construction of the Urban Options Solar Greenhouse are described. The greenhouse performance and horticultural and educational activities are discussed. (MHR)

Date: March 13, 1980

Creator: Cipparone, L.

Object Type: Report

System: The UNT Digital Library

(open access)

Annular air space effects on nuclear waste canister temperatures in a deep geologic waste repository

Air spaces in a deep geologic repository for nuclear high level waste will have an important effect on the long-term performance of the waste package. The important temperature effects of an annular air gap surrounding a high level waste canister are determined through 3-D numerical modeling. Air gap properties and parameters specifically analyzed and presented are the air gap size, surfaces emissivity, presence of a sleeve, and initial thermal power generation rate; particular emphasis was placed on determining the effect of these variables have on the canister surface temperature. Finally a discussion based on modeling results is presented which specifically relates the results to NRC regulatory considerations.

Date: May 13, 1980

Creator: Lowry, W.E.; Cheung, H. & Davis, B.W.

Object Type: Report

System: The UNT Digital Library

(open access)

Radiation Laboratory, University of Notre Dame. Quarterly report, July 1, 1977--September 30, 1977. [Short summaries of progress in 27 projects]

Status of the following investigations is given: effect of molecular geometry on the electron affinity of H/sub 2/O; effect of non-spherically symmetric exchange potential in energy transfer and CIDEP; fragmentation patterns in the radiolysis of normal alkanes; properties of solvated electrons; temperature dependence of electron localization and impurity trapping in methanol and propanol; field-dependent electron mobility; aluminium cluster and organoaluminum systems; collision-induced atomic dipole moments; T-R energy transfer between electronically excited atoms and ground state molecules; correlation between the anisotropy of polarizability and electron-density contour diagrams; high-field conduction in thin-film alkali halides; chemically induced electron polarization of t-butyl radicals in solution; nonlinear response of radical systems to modulated initiation; measurement of electron spin-lattice relaxation times; electron attachment to N/sub 2/O in the gas phase; laser fluorescence of cyclohexadienyl radical in irradiated benzene crystals; kinetics of radical exchange between micelles and water; dynamics of probe molecules in a micellar environment; radiolytic reduction of colloidal silver bromide; characterization of structure in fatty acid aggregate systems; photochemical reactions of Cu(II) complexes with macrocyclic ligands; studies of Ni(III) macrocyclic complexes; rateconstant for oxidation of hydroxycyclohexadienyl radical by ferricyanide; alkoxyl radical reactions with lipids; luminescence from diarylcarbenes; excited-state reactions of 7-hydroxy-4-methyl coumarin; photochronic aziridines; and …

Date: October 13, 1977

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Neutral beam injector for 475 keV MARS sloshing ions

A neutral beam injector system which produces 5 MW of 475 keV D/sup 0/ neutrals continuously on target has been designed. The beamline is intended to produce the sloshing ion distribution required in the end plug region of the conceptual MARS tandem mirror commercial reactor. The injector design utilizes the LBL self-extraction negative ion source and Transverse Field Focusing (TFF) accelerator to generate a long, ribbon ion beam. A laser photodetachment neutralizer strips over 90% of the negative ions. Magnetic and neutron shield designs are included to exclude the fringe fields of the end plug and provide low activation by the neutron flux from the target plasma. The use of a TFF accelerator and photodetachment neutralizer produces a total system electrical efficiency of about 63% for this design.

Date: December 13, 1983

Creator: Goebel, D.M. & Hamilton, G.W.

Object Type: Report

System: The UNT Digital Library

(open access)

A fast large-area position-sensitive time-of-flight neutron detection system

A new position-sensitive time-of-flight neutron detection and histograming system has been developed for use at the Intense Pulsed Neutron Source. Spatial resolution of roughly 1 cm {times} 1 cm and time-of-flight resolution of {approximately}1 {mu}sec are combined in a detection system which can ultimately be expanded to cover several square meters of active detector area. This system is based on the use of arrays of cylindrical one-dimensional position-sensitive proportional counters, and is capable of collecting the x-y-t data and sorting them into histograms at time-averaged data rates up to {approximately}300,000 events/sec over the full detector area and with instantaneous data rates up to more than fifty times that. Numerous hardware features have been incorporated to facilitate initial tuning of the position encoding, absolute calibration of the encoded positions, and automatic testing for drifts. 7 refs., 11 figs., 1 tabs.

Date: October 13, 1989

Creator: Crawford, R.K. & Haumann, J.R.

Object Type: Article

System: The UNT Digital Library

(open access)

Conceptual design study on incorporating a 25-ton/day pyrolysis unit into an operating total energy system. Final report

The results of a conceptual design study on incorporating a pyrolysis unit into an existing total energy plant are presented. The objectives of this study were to examine the institutional, technical and economic factors affecting the incorporation of a 25-ton/day pyrolysis unit into the Indian Creek Total Energy Plant. The Indian Creek total energy plant is described. Results of the conceptual design are presented. A survey of the availability of waste materials and a review of health and safety ordinances are included. The technical aspects of the pyrolysis system are discussed, including the results of the review of facilities requirements for the pyrolysis unit, the analysis of necessary system modification, and an estimate of the useful energy contribution by the pyrolysis unit. Results of the life-cycle cost analysis of the pyrolysis unit are presented. The major conclusions are that: there appears to be no institutional or technical barriers to constructing a waste pyrolysis unit at the Indian Creek Total Energy Plant; pyrolysis gas can be consumed in the engines and the boilers by utilizing venturi mixing devices; the engines can consume only 5% of the output of the 25-ton/day pyrolysis unit; Therefore, consumption of pyrolysis gas will be controlled by …

Date: December 13, 1976

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Steering system for a train of rail-less vehicles

A steering system for use with a multiple vehicle train is disclosed which permits tracking without rails of one vehicle after another. This system is particularly useful for moving conveyor systems into and out of curved paths of room and pillar underground mine installations. The steering system features an elongated steering bar pivotally connected to each of adjacent vehicles at end portions of the bar permitting angular orientation of each vehicle in respect to the steering bar and other vehicles. Each end portion of the steering bar is linked to the near pair of vehicle wheels through wheel yoke pivot arms about king pin type pivots. Movement of the steering bar about its pivotal connection provides proportional turning of the wheels to effect steering and tracking of one vehicle following another in both forward and reverse directions.

Date: March 13, 1981

Creator: Voight, Edward Theodore

Object Type: Patent

System: The UNT Digital Library

(open access)

Review of free electron laser theory and experiments

A review of the major Free Electron Laser (FEL) experiments will be presented. These experiments are designed to produce radiation at wavelengths from the far infrared to the ultraviolet. Different categories of FELs (Compton, Raman, optical klystron, two stage, etc.), as well as the suitability of various types of electron accelerators to power FELs, will also be discussed. Potential applications of the FEL will be summarized.

Date: January 13, 1984

Creator: Prosnitz, D.

Object Type: Article

System: The UNT Digital Library

(open access)

THE SUBCRITICAL REACTOR WITH SOURCES

The mathematical formulation of the subcritical reactor with extraneous sources is presented in detail. The solutions are presented for a two-group approximation including epithermal fission and the relationship to the usual critical reactor problem is discussed. Application of the equations to an arbitrarily complicated geometry is outlined, and an IBM-7090 program for the solution in a bare cylindrical reactor is described. (auth)

Date: March 13, 1962

Creator: Preskitt, C.A.

Object Type: Report

System: The UNT Digital Library

(open access)

Electromagnetic Effects in Relativistic Electron Beam Plasma Interactions

Electromagnetic effects excited by intense relativistic electron beams in plasmas are investigated using a two-dimensional particle code. The simulations with dense beams show large magnetic fields excited by the Weibel instability as well as sizeable electromagnetic radiation over a significant range of frequencies. The possible relevance of beam plasma instabilities to the laser acceleration of particles is briefly discussed. 6 refs., 4 figs.

Date: February 13, 1985

Creator: Kruer, W. L. & Langdon, A. B.

Object Type: Article

System: The UNT Digital Library

(open access)

Thermal properties measurements on rocksalt samples from the site of the proposed Waste Isolation Pilot Plant

Thermal conductivity, thermal expansion, and specific heat measurements have been made on a number of specimens. The specific heat measurements were made by differential scanning calorimetry and the results showed that the specific heats of both clean rocksalt samples and of dirty samples with less than or equal to 7% insoluble impurities were essentially identical to the published specific heat for pure NaCl. In the thermal expansion measurements, two distinct groups of samples were identified. The first group had average expansion coefficients in the temperature range 300 to 700/sup 0/K close to that reported for pure NaCl. All the samples in this group were composed predominantly of halite, with only small amounts of other minerals or materials present. A second group of samples had expansion coefficients only approx. 0.3 to 0.5 that of NaCl. The samples in this group were composed largely of polyhalite, anhydrite, or siltstone. The measurements first reported by Acton on the thermal conductivity of samples taken from a borehole at the site of the proposed nuclear waste isolation pilot plant (WIPP) near Carlsbad, NM, have been extended to include additional samples and higher temperature measurements. This is not believed to be the result of the onset …

Date: May 13, 1980

Creator: Sweet, J. N. & McCreight, J. E.

Object Type: Report

System: The UNT Digital Library

(open access)

ITER disruption modeling using TSC (Tokamak Simulation Code)

Design of the ITER vacuum vessel (VV) is driven strongly by disruption-induced forces. We use the Tokamak Simulation Code (TSC) to model disruptions for the ITER physics phase (I{sub p} = 22 MA) and predict the time evolution of currents and forces on the VV. For a plasma vertically displaced to Z{sub axis} = {minus}1.0m before disruption and decaying at a rate of < dI{sub p}/dt > {approx equal} {minus}1.0MA/ms, the induced VV current peaks at 18 MA. The maximum radial VV force F{sub R} is 56 MN/rad; the maximum vertical force F{sub Z} is 5.4 MN/rad; and the maximum VV disruption pressure is 1.0 MPa. Variations in VV resistance (20 - 160 {mu}{Omega}) and < dI{sub p}/dt > (1 - 2.5 MA/ms) do not change F{sub R} significantly. The dependence of the forces on the initial plasma displacement and < dI{sub p}/dt > behavior, and the responses of other conducting structures are discussed. 2 refs., 6 figs.

Date: November 13, 1989

Creator: Sayer, R. O.; Peng, Y. K. M.; Wesley, J. C.; Jardin, S. C. (Oak Ridge National Lab., TN (USA); General Atomics, San Diego, CA (USA) & Princeton Univ., NJ (USA). Plasma Physics Lab.)

Object Type: Article

System: The UNT Digital Library

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