57 Matching Results

Explore Results

Results: 1 - 24 next
open access

Analysis of Paraho oil shale products and effluents: an example of the multi-technique approach

Description: Inorganic analysis of solid, liquid and gaseous samples from the Paraho Semiworks Retort was completed using a multitechnique approach. The data were statistically analyzed to determine both the precision of each method and to see how closely the various techniques compared. The data were also used to determine the redistribution of 31 trace and major elements in the various effluents, including the offgas for the Paraho Retort operating in the direct mode. The computed mass balances show that … more
Date: June 10, 1979
Creator: Fruchter, J. S.; Wilkerson, C. L.; Evans, J. C. & Sanders, R. W.
Partner: UNT Libraries Government Documents Department
open access

Remote servicing features of two new mirror fusion reactors

Description: Some general approaches to remote blanket change and servicing operations are briefly outlined for the LLL Field Reversed Mirror and Tandem Mirror Fusion reactors. Remote servicing system design requirements are briefly discussed. (RME)
Date: June 10, 1977
Creator: Neef, W.S.
Partner: UNT Libraries Government Documents Department
open access

Using surface waters for supplementing injection at the Salton Sea Geothermal Field (SSGF), Southern California

Description: The flash-steam conversion cycle is most suitable for electric power production at the SSGF. However, large-scale development of the SSGF may require use of makeup water supplements to injected brine for a viable reservoir pressure maintenance program. Since steam condensate will probably be required to satisfy power plant cooling needs, local surface waters have been evaluated for their potential use as sources of injection makeup. It was found that direct injection of untreated makeup water i… more
Date: July 10, 1979
Creator: Raber, E.; Owen, L.B. & Harrar, J.E.
Partner: UNT Libraries Government Documents Department
open access

Computer simulation of temperature-dependent equilibrium precipitation

Description: The EQ3/EQ6 software package contains two computer codes (EQ3 and EQ6) and data files which form a useful tool in modeling precipitation from geothermal fluids caused by heating or cooling. The data files contain information on 140 aqueous species and nearly 150 minerals, and permit calculations over the temperature interval 0 to 350/sup 0/C. Assumption of homogeneous thermodynamic equilibrium in aqueous solution permits calculation of the driving forces for precipitation as measured by the aff… more
Date: July 10, 1979
Creator: Wolery, T.J.
Partner: UNT Libraries Government Documents Department
open access

Passive solar economics in 15 northwest locations

Description: The economic performance of Trombe wall and direct gain passive solar heating designs are evaluated using the LASL/UNM solar economic performance code. Both designs are integrated into a ranch style tract home concept thereby facilitating intra-regional comparison. The economic performance of these systems is evaluated for 15 sites in the Northwest region. Space heating loads have been locally specified. System sizes have been optimized against the natural gas and electric resistance heating al… more
Date: August 10, 1979
Creator: Kirschner, C.; Ben-David, S. & Roach, F.
Partner: UNT Libraries Government Documents Department
open access

Role of systems safety in maintaining affordable safety in the 1980's

Description: Historically, the Department of Energy and its predecessors have used and supported the development of systems safety programs, practices, and principles, finding them by and large adequate, effective, and managerially efficient. Today, attempts are bing made to resolve increasingly complex environmental, safety, and health problems by turning to increasingly complex and detailed regulation as the primary governmental answer. It is increasingly doubtful that such an approach will provide manage… more
Date: July 10, 1979
Creator: Hollister, H. & Trauth, C.A. Jr.
Partner: UNT Libraries Government Documents Department
open access

Tidal pressure response as a reservoir engineering tool

Description: Fluid pressure oscillations resulting from tidal strain reflect hydrologic and elastic properties of a reservoir. Precise measurement and interpretation of these pressure fluctuations has the potential of being a useful quantitative reservoir engineering tool. Interpretations of reservoir response to tides have been to date of a qualitative nature. This is primarily due to the lack of resolving power of the spectral analysis techniques applied in the data interpretation. We have developed a pro… more
Date: July 10, 1979
Creator: Hanson, J.M.
Partner: UNT Libraries Government Documents Department
open access

Studies of tandem mirror confinement

Description: This paper describes a number of physics studies relevant to tandem mirror confinement. We give the basic axial confinement laws and show that T/sub e/ depends critically upon end loss. Sufficient central-cell end loss can stabilize the drift-cyclotron loss-cone mode in the plugs, although the resultant T/sub e/ scaling is too slow for reactors. Minimum-B plugs stabilize flute MHD- and rotation-driven modes; local ballooning sets limits on ..beta.. > or equal to 0.5. Proper magnetic symmetry is… more
Date: July 10, 1978
Creator: Baldwin, D. E.; Cohen, R. H.; Foote, J. H.; Hall, L. S.; Kaiser, T. B.; Logan, B. G. et al.
Partner: UNT Libraries Government Documents Department
open access

Estimates of time-dependence fatigue behavior of type 316 stainless steel subject to irradiation damage in fast breeder and fusion power reactor systems. [Fluence 1--2. 63 x 10/sup 26/ n/m/sup 2/ (E > 0. 1 MeV/ at 593/sup 0/C]

Description: Cyclic lives obtained from strain controlled fatigue tests at 593/sup 0/C from specimens irradiated to a fluence of 1 to 2.63 x 10/sup 26/ n/m/sup 2/ (E greater than 0.1 MeV) were compared to predictions based on the method of strainrange partitioning. When appropriate tensile and creep-rupture ductilities were employed reasonably good estimates of the influence of hold periods and irradiation damage on the fully reversed fatigue life of type 316 stainless steel could be made. Ductility values … more
Date: July 10, 1978
Creator: Brinkman, C.R.; Liu, K.C. & Grossbeck, M.L.
Partner: UNT Libraries Government Documents Department
open access

Field reversal in mirror machines

Description: This report discusses some of the physics issues anticipated in field-reversed mirrors. The effect of current cancellation due to electrons is described. An estimate is made of the required impurity level to maintain a field-reversed configuration. The SUPERLAYER code is used to simulate the high-..beta.. 2XIIB results, and favorable comparisons require inclusion of quasilinear RF turbulence. Impact of a quadrupole field on field-line closure and resonant transport is discussed. A simple self-c… more
Date: July 10, 1978
Creator: Pearlstein, L. D.; Anderson, D. V. & Boozer, A. H.
Partner: UNT Libraries Government Documents Department
open access

Tandem mirror physics and TMX

Description: The Tandem Mirror Experiment (TMX) is being built at Livermore to test the principles of the new tandem mirror reactor concept. In this concept the fusion plasma is confined in a long solenoid terminated at each end by mirror machines of the magnetic-well type. High density plasmas are maintained in each of the mirror end cells by neutral injection at high energies (up to 1 MeV in a high Q reactor). The usual positive ambipolar potential that automatically develops in each mirror cell serves as… more
Date: August 10, 1978
Creator: Fowler, T.K.
Partner: UNT Libraries Government Documents Department
open access

Feasibility studies of thermonuclear neutron capture synthesis of SHE

Description: A variety of thermonuclear neutron sources and neutron capture targets were investigated for their potential of allowing signigicant production of heavy, perhaps superheavy, isotopes. The neutron sources considered range from inertial confinement microexplosives to (underground) macroexplosives. Optimal capture targets appear to be composites containing uranium and protactinium. 1 figure.
Date: April 10, 1978
Creator: Meldner, H.W.
Partner: UNT Libraries Government Documents Department
open access

Microprocessor controlled, personnel thermoluminescence dosimetry reader

Description: Using a DEC LSI-11 microprocessor, a thermoluminescence dosimetry reader for personnel dosimetry has been developed. This microprocessor provides system control, accumulates data for temporary storage on a cassette, and later outputs the data to a large computer. The microprocessor also provides a human/system interface through a computer terminal. A programmable high-voltage supply and a light-emitting diode are used in the reader system to automatically control photomultiplier tube gain.
Date: October 10, 1978
Creator: Hunt, Gerald F.
Partner: UNT Libraries Government Documents Department
open access

Enhancement of methane production in the anaerobic digestion of sewage sludges

Description: The effect of powdered activated carbon on stressed anaerobic digesters utilizing a sewage sludge substrate was evaluated. The addition of carbon resulted in increased methanee production and greater process stability. The degree of enhancement appeared to be proportional to carbon concentration over the dose range studied (500-10,000 mg/l). A maximum increase in methane production of about 150% was observed at the highest carbon dose. The effect of 1500 mg/l carbon, 4000 mg/l coal, and 4000 mg… more
Date: May 10, 1978
Creator: Spencer, R. R.
Partner: UNT Libraries Government Documents Department
open access

Heat transfer from internally-heated molten UO/sub 2/ pools. [PWR; BWR]

Description: Experimental measurements of heat transfer from internally heated pools of molten UO/sub 2/ have been obtained for two cell sizes: 10 cm x 10 cm and 20 cm x 20 cm. The experiments with the large cell have supported a previous conclusion from early small data that the measured downward heat fluxes are higher than would be expected on the basis of considerations of thermal convection. A convective model underpredicts the downward heat fluxes by a factor of 2.5 to 4.5 for all but one early experim… more
Date: October 10, 1978
Creator: Stein, R. P.; Baker, L., Jr.; Gunther, W. H. & Cook, C.
Partner: UNT Libraries Government Documents Department
open access

U. S. Mirror Program

Description: The mirror approach is now the principal alternate to the tokamak in the U.S. magnetic fusion energy program. The program is now focused on two new concepts that can obtain high values of Q, defined as the ratio of fusion power output to the neutral beam power injected to sustain the reaction. These are the tandem mirror and field reversed mirror concepts. Theoretically both concepts should be able to attain Q = 5 or more, as compared with Q approximately 1 in previous mirror designs. Success w… more
Date: August 10, 1978
Creator: Fowler, T. K.
Partner: UNT Libraries Government Documents Department
open access

Reduction of irradiation-induced creep by point defect trapping

Description: The theory of point defect trapping was applied to predict the effect of solutes on the steady-state dislocation climb creep rate. Vacancy loops generated in the cascades of point defect production by heavy particles were included. It is shown that the effect of vacancy loops on the creep rate is mathematically equivalent to a simultaneous reduction in the vacancy trapping rate at solutes as well as in the free point defect generation rate and recombination coefficient. These parameters are red… more
Date: July 10, 1978
Creator: Mansur, L. K. & Wolfer, W. G.
Partner: UNT Libraries Government Documents Department
open access

Response of rocks to large stresses. [Model for predicting response of ductile and brittle rocks to impact loading]

Description: To predict the dimensions and characteristics of impact- and explosion-induced craters, one must know the equation of state of the rocks in which the crater is formed. Recent experimental data shed light upon inelastic processes that influence the stress/strain behavior of rocks. We examine these data with a view to developing models that could be used in predicting cratering phenomena. New data is presented on the volume behavior of two dissimilar rocks subjected to tensile stresses.
Date: November 10, 1976
Creator: Schock, R. N.
Partner: UNT Libraries Government Documents Department
open access

Estimation of aerosol plutonium transport by the dust-flux method: a perspective on application of detailed data

Description: Two methods of dust-flux measurements are discussed which have been utilized to estimate aerosol plutonium deposition and resuspension. In previous studies the methods were found to be sufficiently detailed to permit parameterization of dust-flux to the erodibility of the soil, and a seventh-power dependency of dust-flux (or plutonium flux) to wind speed was observed in worst case conditions. The eddy-correlation method is technically more difficult, requires high-speed data acquisition, and re… more
Date: December 10, 1976
Creator: Shinn, Joseph H.
Partner: UNT Libraries Government Documents Department
open access

EMP protection technology interchange

Description: Investigation and assessment of the potential degrading and destructive effects associated with the nuclear electromagnetic (EMP) phenomena has created a large technological base. This base is indeed quite broad owing to the unique and system-pervasive character of the EMP. One of the aims of an emerging discipline, such as that associated with EMP, is to provide for adequate transfer and integration of the developing technology into the overall engineering community. The needs of the community… more
Date: May 10, 1977
Creator: Martin, L. C.
Partner: UNT Libraries Government Documents Department
open access

Determination of the pr of laser fusion targets using the. cap alpha. -particle TOF technique

Description: A computer code was written to describe the alpha particle energy loss. The problem of a symmetric compression of the DT gas by an exploding microsphere is analyzed. The code calculates the energy spectrum of a Gaussian distribution of alpha particles after passing through the compressed gas and the exploded glass. The calculations are being used to determine design parameters for diagnostic instruments for measuring charged particle energy distributions from laser fusion targets. (MOW)
Date: October 10, 1975
Creator: Slivinsky, V. W.; Lent, E.; Shay, H. D. & Manes, K. R.
Partner: UNT Libraries Government Documents Department
open access

Effects of fill pressure and pulse simultaneity on the laser driven implosion of dt filled glass microshells

Description: This paper discusses a series of experiments performed with the LLL two-beam laser system, JANUS. The JANUS laser is capable of focusing approximately 500 Gigawatts of 1.06 ..mu.. power (40 J in 80 psec) on laser fusion type targets. In these experiments, the targets were deuterium tritium (DT) filled glass microshells with aspect ratios of 100 to 200. Targets of this type operate in what is commonly called the exploding pusher mode. The result is that the glass shell surrounding the DT gas (th… more
Date: October 10, 1975
Creator: Storm, E.; Holzrichter, J. F.; Ahlstrom, H. G.; Speck, D. R.; Swain, J. E.; Coleman, L. W. et al.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen