Serial/Series Title
Chemical Processing Department Monthly Report
7
ARM Facilities Newsletter
6
LLE Review Quarterly Report
6
Fiscal Year 2000
5
Hanford Laboratories Operation Monthly Activities Report
5
OIT Best Practices
4
Reducing Ultra-Clean Transportation Fuel Costs with HyMelt Hydrogen Quarterly Report
4
Advanced Cuttings Transport Study Quarterly Report
3
Dilute Surfactant Methods for Carbonate Formations Quarterly Report
3
Evaluation of Roof Bolting Requirements Based on In-Mine Bolter Drilling Progress Report
3
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DENSJT: statistical shell-model level density computer code description and user's manual. [In FORTRAN for CDC Cyber-70 computer]
The FORTRAN code DENSJT described here is constructed to calculate the appropriate moments and dimensions needed in describing the Gaussian level density for fixed values of the total angular momentum (J) and isobaric spin (T = T/sub 0/). The input for this code is the same as in the usual shell-model codes, namely, the single-particle orbital properties and the antisymmetric two-body matrix elements. To calculate the moments for fixed values of the angular momentum (J) a method described by Ginocchio is used. All of the ''basic inputs'' needed in the reduction formula were derived without any restrictions on the orbitals. The formulas used in DENSJT are described, and the basic inputs are listed in tables. A block flow chart showing the general structure and the specific function of each subroutine is included. All necessary information for the input and output of this code is described. A calculation involving 3 orbitals in the s--d shell took 1 second on a CDC Cyber-70 computer. (RWR)
Date:
July 1, 1976
Creator:
Dalton, B.
Object Type:
Report
System:
The UNT Digital Library
Geothermal resources: exploration and exploitation. A bibliography
This comprehensive bibliography contains 5476 citations of foreign and domestic research reports, journal articles, patents, conference proceedings, and books concerned with the exploration and exploitation of geothermal resources. The coverage dates back as far as useful references could be obtained and extends through June 1976. References are arranged in broad subject categories and are made up of complete bibliographic citations. These are followed by a listing of subject descriptors used to describe the subject content of each reference. Four indexes are included: Corporate, Personal Author, Subject, and Report Number. Also included is a list of journals from which articles were selected. (LBS)
Date:
July 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Review of the US Department of Energy Classified Visits Program
This review examines the US Department of Energy (DOE) Classified Visits Program, which is administered by the Office of Safeguards and Security. The overall purpose of this analysis is to (1) ensure that DOE policy and implementing procedures are appropriate to maintain US national security intentions; (2) evaluate the effectiveness of the process used across the DOE complex; and (3) recommend changes which will enhance the overall efficiency of the process while maintaining the program's integrity.
Date:
July 1, 1992
Creator:
Martin, S. W.; Killinger, M. H. & Segura, M. A.
Object Type:
Report
System:
The UNT Digital Library
Natural gas massive hydraulic fracture research and advanced technology project. Quarterly report: February 1977--April 1977
Two field experiments were conducted with the surface electrical potential measurement system. The first was an MHF experiment with G.P.E. (Gas Producing Enterprises) on March 15 south of Vernal, Utah. This fracture was a joint ERDA-industry funded experiment. Approximately 640,000 gallons of fluid and 1.1 million pounds of proppant were injected into multilayered gas pay zones from a depth of 6500 feet to 8000 feet. This analysis of the data has produced several new and different concepts related to fracture design and growth. The second experiment conducted was the CONOCO hydrofracture that was performed as a part of their tertiary oil recovery experiment in the Big Muddy Field east of Casper, Wyoming. It was a small fracture (300 bbl) initiated at a depth of approximately 3500 feet. Eighteen pairs of potential probes were placed at 20/sup 0/ intervals around the fracture well at spacings of 1000 feet and 2000 feet. In addition, the relative potential was measured on six wells adjacent (<1000 feet) to the fracture well. These wells contained the CONOCO pressure gages to monitor formation pressure during the fracture and subsequent recovery operations. Potential measurements were made at twenty second intervals on alternate current probes: one a downhole …
Date:
July 1, 1977
Creator:
Schuster, C. L. & Northrop, D. A.
Object Type:
Report
System:
The UNT Digital Library
Annotated bibliography of safety-related occurrences in pressurized-water nuclear power plants as reported in 1975
The bibliography presented contains 100-word abstracts of reports to the U.S. Nuclear Regulatory Commission concerning operational events that occurred at pressurized-water reactor nuclear power plants in 1975. The report includes 1097 abstracts, arranged alphabetically by reactor name and then chronologically for each reactor, that describe incidents, failures, and design or construction deficiencies experienced at the facilities. Key-word and permuted-title indexes are provided to facilitate location of the subjects of interest, and tables summarizing the information contained in the bibliography are presented. The information listed in the tables includes instrument failures, equipment failures, system failures, causes of failures, deficiencies noted, and the time of occurrence (i.e., during refueling, operation, testing, or construction). A few of the unique events that occurred during the year are reviewed in detail.
Date:
July 1, 1976
Creator:
Scott, R. L. & Gallaher, R. B.
Object Type:
Report
System:
The UNT Digital Library
Laser fusion hybrid reactor systems study
The work was performed in three phases. The first phase included a review of the many possible laser-reactor-blanket combinations and resulted in the selection of a ''demonstration size'' 500 MWe plant for further study. A number of fast fission blankets using uranium metal, uranium-molybdenum alloy, and uranium carbide as fuel were investigated. The second phase included design of the reactor vessel and internals, heat transfer system, tritium processing system, and the balance of plant, excluding the laser building and equipment. A fuel management scheme was developed, safety considerations were reviewed, and capital and operating costs were estimated. Costs developed during the second phase were unexpectedly high, and a thorough review indicated considerable unit cost savings could be obtained by scaling the plant to a larger size. Accordingly, a third phase was added to the original scope, encompassing the redesign and scaling of the plant from 500 MWe to 1200 MWe (less lasers).
Date:
July 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Influence of surface defects and local structure on oxygenate reaction pathways over metal oxide surfaces
Work during the last year (August 1991 to July 1992) has concentrated on completing the previously initiated studies of the surface chemistry of C{sub 1} oxygenates on particularly methanol SnO{sub 2}(110) and beginning studies of C{sub 2}oxygenate surface chemistry. During the remaining six months of the second budget period, the C{sub 2} studies will be continued.
Date:
July 1992
Creator:
Cox, David F.
Object Type:
Report
System:
The UNT Digital Library
Ion-channeling observation of correlated atomic displacements below Tc in YBa sub 2 Cu sub 3 O sub 7-x and Pb-doped Bi sub 2 Sr sub 2 CaCu sub 2 O sub x
Temperature dependent studies of ion channeling in high-quality, high-Tc single-crystals are summarized. The measurements revealed an abrupt change across Tc in displacements in the a-b plane of the Cu(I and 2) and 0(4) atoms; normal Debye-like'' vibrations were found for the Y and Ba atoms. The anomalous atomic displacements were found for both proton and He channeling, and manifested themselves as an abrupt increase in the critical angle and a simultaneous decrease in the minimum yield. The anomalous change in Cu-0 displacements shifted directly with stoichiometry-induced changes in Tc, implying a causal fink between the observed phonon anomaly and the superconducting state. An apparently identical anomaly was found in (Bi{sub 1.7}Pb{sub 0.3})Sr{sub 2}CaCu{sub 2}O{sub x}, indicating that it is a general feature of high-T, superconductivity. A comparison with other experimental measurements in YBa{sub 2}Cu{sub 3}O{sub 7-x}, including a detailed neutron diffraction study, indicates that the anomaly is not due to an overall reduction in average vibrational amplitude, but arises instead from a strongly correlated sequence of Cu(1 and 2) and 04 displacements that appears with the onset of superconductivity. These strongly correlated displacements are either dynamic, or they are static distortions that fail to preserve the overall crystal symmetry.
Date:
July 1, 1992
Creator:
Rehn, L. E.; Sharma, R. P. & Baldo, P. M.
Object Type:
Article
System:
The UNT Digital Library
Elastic and plastic deformation of solids. Final report, February 1, 1960--January 31, 1976
This is a summary of the techniques used and the results obtained in the study of creep at high pressure, pressure dependence of yield stress and elastic constants, etc. 58 references. (DLC)
Date:
July 15, 1976
Creator:
Ruoff, A. L.
Object Type:
Report
System:
The UNT Digital Library
Preliminary ''steam tables'' for NaCl solutions. Physical properties of the coexisting phases and thermochemical properties of the H{sub 2}O component. [80{sup 0} to 325{sup 0}C]
Preliminary ''steam tables'' which contain the physical properties of vapor-saturated aqueous sodium chloride solution and the coexisting gas are given for liquid concentrations between 0 mol NaCl/kg H{sub 2{O and halite saturation at temperatures between 80{sup 0} and 325{sup 0}C. For the same conditions, the tables give the partial molal entropy, enthalpy, and volume of H{sub 2}O in the phases. The tables were calculated from parametric equations of state.
Date:
July 1, 1975
Creator:
Haas, J. L. Jr.
Object Type:
Report
System:
The UNT Digital Library
Chelating extractants of improved selectivity. Progress report, September 1, 1976--October 31, 1977
New means of characterizing metal chelating reagent selectivity have been developed and incorporated into a theoretical factor analysis of the chelate stability constants of 24 metal ions with 14 ligands of the EDTA family. The factor analysis will be extended to extracting ligand families. A computer-controlled automated metal chelate stability constant apparatus has been assembled and successfully tested. A high performance liquid chromatograph has been set up and preliminary examination of comparison of reversed phase chromatographic separation of metal ions with their solvent extraction behavior begun.
Date:
July 1, 1977
Creator:
Freiser, H.
Object Type:
Report
System:
The UNT Digital Library
Fusion programs in Applied Plasma Physics
The Applied Plasma Physics (APP) program at General Atomics (GA) described here includes four major elements: (a) Applied Plasma Physics Theory Program, (b) Alpha Particle Diagnostic, (c) Edge and Current Density Diagnostic, and (d) Fusion User Service Center (USC). The objective of the APP theoretical plasma physics research at GA is to support the DIII-D and other tokamak experiments and to significantly advance our ability to design a commercially-attractive fusion reactor. We categorize our efforts in three areas: magnetohydrodynamic (MHD) equilibria and stability; plasma transport with emphasis on H-mode, divertor, and boundary physics; and radio frequency (rf). The objective of the APP alpha particle diagnostic is to develop diagnostics of fast confined alpha particles using the interactions with the ablation cloud surrounding injected pellets and to develop diagnostic systems for reacting and ignited plasmas. The objective of the APP edge and current density diagnostic is to first develop a lithium beam diagnostic system for edge fluctuation studies on the Texas Experimental Tokamak (TEXT). The objective of the Fusion USC is to continue to provide maintenance and programming support to computer users in the GA fusion community. The detailed progress of each separate program covered in this report period is described …
Date:
July 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Present state-of-the-art of two-phase flow model calculations
Argonne National Laboratory (ANL) has developed two- and three-dimensional computer programs to predict hydrodynamics in complex fluid/solids systems including atmospheric and pressurized bubbling and circulating fluidized-bed combustors and gasifiers, concentrated suspension (slurry) piping systems and advanced particle-bed reactors for space-based applications, for example. The computer programs are based upon phenomenological mechanistic models and can predict frequency of bubble formation, bubble size and growth, bubble frequency and rise-velocity, solids volume fraction, gas and solids velocities and low dimension chaotic attracters. The results of these hydrodynamic calculations are used as inputs to mechanistic models to predict heat transfer and erosion and have been used to produce simplified models and guidelines to assist in design and scaling. An extensive coordinated effort involving industry, government, and university laboratory data has served to validate the various models. Babcock Wilcox (B W), in close collaboration with ANL, has developed the three dimensional FORCE2 computer program which is both transient as well as steady-state.
Date:
July 1, 1992
Creator:
Lyczkowski, R. W.; Ding, Jianmin & Bouillard, J. X.
Object Type:
Article
System:
The UNT Digital Library
600 kV modulator design for the SLAC Next Linear Collider Test Accelerator
Preliminary design for the SLAC Next Linear Collider Test Accelerator (NLCTA) requires a pulse power source to produce a 600 kV, 600 A, 1.4 {mu}s, 0.1% flat top pulse with rise and fall times of approximately 100 ns to power an X-Band klystron with a microperveance of 1.25 at {approx} 100 MW peak RF power. The design goals for the modulator, including those previously listed, are peak modulator pulse power of 340 MW operating at 120 Hz. A three-stage darlington pulse-forming network, which produces a >100 kV, 1.4 {mu}s pulse, is coupled to the klystron load through a 6:1 pulse transformer. Careful consideration of the transformer leakage inductance, klystron capacitance, system layout, and component choice is necessary to produce the very fast rise and fall times at 600 kV operating continuously at 120 Hz.
Date:
July 1, 1992
Creator:
Harris, K.; de Lamare, J.; Nesterov, V. & Cassel, R.
Object Type:
Article
System:
The UNT Digital Library
SRL-NURE hydrogeochemical data management system
A data management system was developed to store and retrieve all physical, chemical, and geological data collected for the NURE Hydrogeochemical Reconnaissance program by the Savannah River laboratory (SRL). In 1975, SRL accepted responsibility for hydrogeochemical reconnaissance of twenty-five states in the eastern United States as part of the National Uranium Resource Evaluation (NURE) program to identify areas favorable for uranium exploration. The SRL-NURE hydrogeochemical data management system is written in FORTRAN IV for an IBM System 360/195 computer. The system is designed to accommodate the changes in the types of data collected about a sampling site and for the different numbers of samples taken at the sites. The data are accepted as they become available and are combined with relevant data already in the system. (auth)
Date:
July 1, 1976
Creator:
Maddox, J. H.; Wren, H. F.; Honeck, H. C.; Tharin, C. R. & Howard, M. D.
Object Type:
Report
System:
The UNT Digital Library
Temperature Distributions in Electron Beam Welding Cavities
Surface temperatures in electron beam welding cavities in stainless steel 304 and aluminum 1100, 2024, and 6061 were measured with a narrow band infrared radiation pyrometer. A special device was designed for mounting the radiation-sensing probe next to the electron beam gun in the welding chamber. This mounting device included a mechanism for oscillating the probe so as to scan the cavity region both perpendicular and parallel to the welding direction. At the center of its movement the probe viewed almost directly down into the welding cavity. The effect of interreflections occurring in the welding cavity were accounted for by the use of an apparent spectral cavity emittance. Typical measured cavity temperature distributions for SS-304 ranged from 1950/sup 0/C at the mouth to a peak of 2350/sup 0/C at the cavity base and from 1300 to 1650/sup 0/C for A1-1100. First approximation predictions of the cavity surface temperatures were determined by assuming a quasi-steady-state condition. The surface temperature is then a function of the vapor pressure, which is required to balance the surface tension and the hydrostatic pressure both of which tend to collapse the cavity. Base temperatures thus predicted were about 5% and 10% higher than measured for SS-304 …
Date:
July 15, 1976
Creator:
Shintaku, S. M.
Object Type:
Report
System:
The UNT Digital Library
Progress report on modeling studies: Natural state conditions and exploitation of the Dachny geothermal reservoir, Mutnovsky hydrothermal system, Kamchatka, Russia
The spatial distribution of pre-exploitation conditions (e.g. temperature and pressure distributions, liquid and vapor saturations, circulation characteristics of high-temperature fluids) in the Dachny site of the Mutnovsky hydrothermal system, obtained earlier using a 3-D mapping method (Kiryukhin et al, 1991), are revised on the basis of natural state simulations performed with the computer code TOUGH2 (Pruess, 1991). A 3-D model of the natural state conditions at the Dachny site was developed. The fine-tuning of the model has been achieved by comparing model results to the observations made in geothermal wells 1, 24, 01, 016 and 26 during flow tests conducted during 1983--1988. The behavior of these five wells in response to two exploitation scenarios, one with no reinjection, the other with 100 kg/s of liquid injection into well 027, was also computed.
Date:
July 1, 1992
Creator:
Kiryukhin, A. V.
Object Type:
Report
System:
The UNT Digital Library
Study of the atmospheric chemistry of radon progeny in laboratory and real indoor atmospheres
This report covers the second year of the 28 month grant current grant to Clarkson University to study the chemical and physical behavior of the polonium 218 atom immediately following its formation by the alpha decay of radon. Because small changes in size for activity result in large changes in the delivered dose per unit exposure, this behavior must be understood if the exposure to radon progeny and it dose to the cells in the respiratory tract are to be fully assessed. Two areas of radon progeny behavior are being pursued; laboratory studies under controlled conditions to better understand the fundamental physical and chemical process that affect the progeny's atmospheric behavior and studies in actual indoor environments to develop a better assessment of the exposure of the occupants of that space to the size and concentration of the indoor radioactive aerosol. This report describes the progress toward achieving these objectives.
Date:
July 1, 1992
Creator:
Hopke, P. K.
Object Type:
Report
System:
The UNT Digital Library
Thermodynamics of the conversion of plutonium dioxide to plutonium monocarbide
The present study contains an equilibrium thermodynamic analysis of the Pu--C--O system and a discussion from an equilibrium thermodynamic point of view of the direct carbothermic reduction and two-step carbothermic-hydrogen reduction of PuO/sub 2/ to PuC/sub 1-x/. Included are considerations of the partial pressures of the various species in the Pu--C--O and Pu--C--H systems, the process parameters required for conversion of the oxide to the carbide, and the loss of plutonium due to vapor species.
Date:
July 1, 1976
Creator:
Besmann, T. M. & Lindemer, T. B.
Object Type:
Report
System:
The UNT Digital Library
Studies of Plasma Transport
None
Date:
July 17, 1991
Creator:
Malmberg, J. H.; O'Neil, T. M. & Driscoll, C. F.
Object Type:
Report
System:
The UNT Digital Library
Beta-energy averaging and beta spectra
A simple yet highly accurate method for approximately calculating spectrum-averaged beta energies and beta spectra for radioactive nuclei is presented. This method should prove useful for users who wish to obtain accurate answers without complicated calculations of Fermi functions, complex gamma functions, and time-consuming numerical integrations as required by the more exact theoretical expressions. Therefore, this method should be a good time-saving alternative for investigators who need to make calculations involving large numbers of nuclei (e.g., fission products) as well as for occasional users interested in restricted number of nuclides. The average beta-energy values calculated by this method differ from those calculated by ''exact'' methods by no more than 1 percent for nuclides with atomic numbers in the 20 to 100 range and which emit betas of energies up to approximately 8 MeV. These include all fission products and the actinides. The beta-energy spectra calculated by the present method are also of the same quality.
Date:
July 1, 1976
Creator:
Stamatelatos, M. G. & England, T. R.
Object Type:
Report
System:
The UNT Digital Library
Preliminary study of the importance of hydrothermal reactions on the temperature history of a hot, dry rock geothermal reservoir
The conditions under which the heat associated with hydrothermal reactions may be recovered from a dry rock geothermal reservoir were assessed. A theoretical computer model, based upon the finite element method, of a two-dimensional fracture in a hot, dry rock geothermal reservoir was developed and tested. Simulated water circulation through the fracture at constant velocity extracted heat from the wall rock via conduction as well as from chemical processes. Water temperature was assumed equal to the temperature of the wall rock boundary: thus, the combined processes of water circulation and heat transport were simply described by the two-dimensional heat diffusion equation with a time dependent water circulation boundary. The accuracy of the basic finite element approximation was tested by comparing numerical solutions to known analytical solutions for related mathematical models. Hydrothermal reactions occurring between water and a granitic source rock were subdivided into two categories; dissolving reactions and alteration reactions. It was found that the quartz dissolving reaction had little or no direct effect on reservoir temperatures for any combination of flow and fracture parameters. It was shown that hydrothermal alteration reactions could contribute significant chemical energy to a fractured system under conditions of small flow rate and large alteration …
Date:
July 1, 1975
Creator:
Morris, J. R.
Object Type:
Report
System:
The UNT Digital Library
Theoretical interpretation of angle- and polarization-dependent laser light absorption measurements
It is shown that recently published observations of angle- and polarization-dependent absorption of intense laser light are consistent with computer simulations of resonance absorption in a steepened plasma profile, with the additional assumption of a modestly rippled critical surface. About 10% absorption seems to be due to mechanisms not addressed in the simulations.
Date:
July 18, 1977
Creator:
Thomson, J. J.; Kruer, W. L.; Langdon, A. B.; Max, C. E. & Mead, W. C.
Object Type:
Article
System:
The UNT Digital Library
Laboratory experiment demonstrating the way in which a steam barrier prevents the dissolution of salt buried in a flooded packed bed. [Implications for preventing radionuclide migration near groundwater in underground explosions]
We have conducted a laboratory experiment to demonstrate a way in which a solid material can be prevented from dissolving in water. The differential solubility of salt (NaCl) in steam vs water is exploited. As long as the temperature of the area and water surrounding the salt is maintained above the boiling point of water, the salt cannot dissolve. This phenomenon, known as the thermal barrier, has far-reaching implications for preventing the dispersal of contaminants present near groundwater sources (e.g., created by underground explosions).
Date:
July 18, 1977
Creator:
Taylor, R. W. & Bowen, D.
Object Type:
Report
System:
The UNT Digital Library