Conceptual design of the blanket and power conversion system for a mirror hybrid fusion-fission reactor. Addendum 1. Alternate concepts. 12-month progress report addendum, July 1, 1975--June 30, 1976 (open access)

Conceptual design of the blanket and power conversion system for a mirror hybrid fusion-fission reactor. Addendum 1. Alternate concepts. 12-month progress report addendum, July 1, 1975--June 30, 1976

During the course of the Mirror Hybrid Fusion-Fission Reactor study several alternate concepts were considered for various reactor components. Several of the alternate concepts do appear to exhibit features with potential advantage for use in the mirror hybrid reactor. These are described and should possibly be investigated further in the future.
Date: November 15, 1976
Creator: Schultz, K. R.; Dee, J. B.; Backus, G. A. & Culver, D. W.
Object Type: Report
System: The UNT Digital Library
GSG-GIS development program plan (open access)

GSG-GIS development program plan

For the past 40 years, the Savannah River Site (SRS) has been subjected to numerous geological and geotechnical investigations in support of facility construction and waste site development and remediation. Over this period,.a variety of different subcontractors have collected large quantities of geoscience data. In addition, current programs involve numerous investigators from different departments, and consequently, earth science data and interpretations are scattered among the departments, investigators, and subcontractors at SRS. As a result, scientific and management decisions cannot take advantage of the significant body of information that exists at SRS. Recent DOE Orders (Systematic Evaluation Program, 1991) have put specific requirements on their contractors to compile geological databases to coordinate DOE site data gathering and interpretations, and to assist in compiling safety analysis reports. The Earth Science Advisory Committee and the Environmental Advisory Committee have also made specific recommendations on the management of SRS geoscience data. This plan describes a management system to identify, communicate, and compile SRS geological (including geohydrologic), seismological, and geotechnical (656) data and interpretations on a Geographic Information System (GIS).
Date: October 15, 1992
Creator: Lee, R. C.
Object Type: Report
System: The UNT Digital Library
Filament power regulator for thermal ionization mass spectrometry (open access)

Filament power regulator for thermal ionization mass spectrometry

A device has been developed that will control the filament temperature in a thermal ionization mass spectrometer. The arrangement is superior to past methods to control this critical parameter. The operating principle lies in the feature of filament power control as contrasted with the formerly used voltage or current controls. Reproducibility and stability of ion beams showed great improvement. The mass spectrometer was developed to analyze for parts-per-billion concentrations of uranium in water samples.
Date: September 15, 1977
Creator: Rogers, E. R. & Ferguson, J. R.
Object Type: Report
System: The UNT Digital Library
Synthesis and properties of novel cluster phases. [LiMo sub 3 Se sub 3] (open access)

Synthesis and properties of novel cluster phases. [LiMo sub 3 Se sub 3]

Research on cluster compounds this period (past periods covered such compounds such as NbMTe{sub 2}, TaFe{sub 1.25}Te{sub 3}, Nb{sub 3}SiTe{sub 6}, etc.) was concentrated on LiMo{sub 3}Se{sub 3}. A LiMo{sub 3}Se{sub 3} bundle {approximately} 70 nm wide was grown on a holey carbon substrate; STEM was used to resolve individual 6 {angstrom} wires, and the Mo{sub 3}Se{sub 3} flat ''monomer'' units is resolved at 2.3 {angstrom} (Mo atoms wrapped in Se atoms). Inorganic-organic polymer composites are being studied; conducting films have been prepared. The sheet structure of Nb{sub 3}SiTe{sub 6} is shown. 4 figs. (DLC)
Date: May 15, 1992
Creator: DiSalvo, F.
Object Type: Report
System: The UNT Digital Library
Experimental laser fusion devices and related vacuum problems (open access)

Experimental laser fusion devices and related vacuum problems

Laser fusion experiments require hard vacuum in the laser-beam spatial filters, target chambers and for target diagnostics instruments. Laser focusing lenses and windows, and target alignment windows must hold vacuum without optical distortion, and must be protected from target debris. The vacuum must be sufficient to prevent residual gas breakdown in focused laser light, avoid arcing at high voltage terminals, minimize contamination and melting of cryogenic targets, and prevent adsorption of the target's microfusion radiation before it reaches the diagnostics instruments.
Date: August 15, 1977
Creator: O'Neal, W. C.; Campbell, D. E.; Glaros, S. S.; Hurley, C. A.; Kobierecki, M. W.; McFann, C. B. Jr. et al.
Object Type: Article
System: The UNT Digital Library
Material control for a reprocessing plant (open access)

Material control for a reprocessing plant

Adequate control of special nuclear material (SNM) implies a basic knowledge of the quantities of SNM processed through or contained within a fuels processing facility with sufficient accuracy that diversion of the SNM for deleterious purposes can be detected in a timely manner. This report to the Lawrence Livermore Laboratory (LLL) describes the primary process streams containing plutonium that are handled routinely within a spent fuel reprocessing plant and conversion facility. As an aid in implementing the objectives of the accountability system in a realistic situation, the Allied General Nuclear Services (AGNS) reprocessing plant now under construction near Barnwell, South Carolina, was chosen as the study model. The AGNS plant processes are discussed in detail emphasizing those portions of the process that contain significant quantities of plutonium. The unit processes within the separations plant, nitrate storage, plutonium product facility and the analytical laboratory are described with regard to the SNM control system currently planned for use in the facilities. A general discussion of laboratory techniques, nondestructive assay and process instrumentation for plutonium process and product material from a reprocessing plant is included. A comprehensive discussion is given of holdup measurements in plutonium recycle facilities. A brief preliminary overview is presented …
Date: August 15, 1976
Creator: Rundquist, D.; Bray, G.; Donelson, S.; Glancy, J.; Gozani, T.; Harris, L. et al.
Object Type: Report
System: The UNT Digital Library
Annual performance report for A program of FRC theory research'' (open access)

Annual performance report for A program of FRC theory research''

The original activities carried out under this Grant were specific to the Fusion scheme known as the Field Reversed Configuration (FRC). With the decisions of the Department of Energy to deemphasize experimental activity in the areas known as alternate concepts,'' we have generalized our studies. Since the research we have perfomed on the FRC led us into the area of high beta (8{pi}nT/B{sup 2}) and large orbits, we have chosen to emphasize those areas of plasma physics. The relevance to the mainline fusion program will emerge as our understanding of these areas develops. This statement may not be obvious, but it reflects my observations, developed over the last thirty-two years of fusion research, of how progress is made in this complex field. During the present contract period, we have undertaken three specific studies on large orbit and high {beta} physics which have reached a point of near completion. One of these studies has demonstrated that in large orbit systems collisional relaxation to a Maxwellian distribution proceeds at a surprisingly slow rate, because of the competing effects of collisions which tend to make a local Maxwellian, which in a large orbit system can make remote regions more non-Maxwellian. A second study …
Date: May 15, 1992
Creator: Krall, N. A.
Object Type: Report
System: The UNT Digital Library
BIPS-FS preliminary design, miscellaneous notes (open access)

BIPS-FS preliminary design, miscellaneous notes

A compendium of flight system preliminary design internal memos and progress report extracts for the Brayton Isotope Power System Preliminary Design Review to be held July 20, 21, and 22, 1975 is presented. The purpose is to bring together those published items which relate only to the preliminary design of the Flight System, Task 2 of Phase I. This preliminary design effort was required to ensure that the Ground Demonstration System will represent the Flight System as closely as possible.
Date: June 15, 1976
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Fatigue tests of dowel-socket systems. [HTGR] (open access)

Fatigue tests of dowel-socket systems. [HTGR]

A test program was conducted to determine the fatigue behavior of LHTGR fuel element dowel/socket systems. Two dowel/socket systems, namely, a four-dowel system and a five-dowel system, were tested to failure under shear loads applied through a fatigue test apparatus to simulate repetitive loading during a seismic event.
Date: June 15, 1976
Creator: Chiang, D. D.
Object Type: Report
System: The UNT Digital Library
Modeling of cladding and fuel motion in a loss of flow situation for GCFR safety analysis. Progress report 6, October 15, 1975--January 15, 1976 (open access)

Modeling of cladding and fuel motion in a loss of flow situation for GCFR safety analysis. Progress report 6, October 15, 1975--January 15, 1976

The first experiments have been run using electrically heated, simulated fuel elements in an inert gas (argon) loop. The fuel elements have a chopped cosine power input and have a Pb/Sn alloy cladding. Single elements were used in the first two experiments with a step power pulse of about 1 kW/ft which was sufficient to melt the center of the clad within 8 to 10 sec. As the molten cladding entered the blanket (unheated) region, it froze within about 1 inch. The apparatus for the stainless steel pouring experiment is progressing. Additional models for freezing of molten cladding in colder regions are being analyzed and tested against the single tube pouring tests previously reported. Analytical routines are under development.
Date: February 15, 1976
Creator: Eggen, D. T.
Object Type: Report
System: The UNT Digital Library
Biphase turbine bottoming cycle for a diesel engine (open access)

Biphase turbine bottoming cycle for a diesel engine

Application of a two-phase turbine system to waste heat recovery was examined. Bottoming cycle efficiencies ranging from 15 to 30% were calculated for a 720/sup 0/F diesel exhaust temperature. A single stage demonstration unit, designed for non-toxic fluids (water and DowTherm A) and for atmospheric seals and bearings, had a cycle efficiency of 23%. The net output power was 276 hp at 8,100 rpm, increasing the total shaft power from 1,800 hp for the diesel alone, to 2,076 hp for the combined system. A four stage organic turbine, for the same application, had a rotational speed of 14,700 rpm while a four stage steam turbine had 26,000 rpm. Fabrication drawings were prepared for the turbine and nozzle. The major improvement leading to higher cycle efficiency and lower turbine rpm was found to be the use of a liquid component with lower sensible heat. A reduction in capital cost was found to result from the use of a contact heat exchanger instead of tube-fin construction. The cost for a contact heat exchanger was only $35-52/kWe compared to $98/kWe for a tube-fin heat exchanger. Design drawings and materials list were prepared. A program resulting in the demonstration of a two-phase bottoming system …
Date: February 15, 1977
Creator: Ahmad, S. & Hays, L.
Object Type: Report
System: The UNT Digital Library
Georgia Tech 400 KWth Solar Thermal Test Facility (open access)

Georgia Tech 400 KWth Solar Thermal Test Facility

Georgia Tech is constructing a 400 KWth solar test facility for high temperature solar energy research and development. Designed by Francia, it is an enlarged version of a central receiver facility developed near Genoa, Italy. The Georgia Tech facility utilizes 550 round mirrors, 111 centimeters in diameter which may be operated flat or focused to provide radiant heat fluxes from 25 to 200 W/cm/sup 2/ to a test area centrally located above the mirror field. Scheduled to be completed in January 1977, it will be used first to heat a boiler-superheater to deliver 365 Kg/hr of steam at 150 atmospheres and 600/sup 0/C. Other uses include evaluation of experimental receivers utilizing such heat transfer fluids as steam, air, helium, oil, molten salts, and liquid metals, and basic research in the areas of metals, ceramics and coatings.
Date: August 15, 1976
Creator: Walton, Jr., J. D.; Bomar, Jr., S. H. & Poulos, N. E.
Object Type: Report
System: The UNT Digital Library
Application of pattern recognition techniques to crime analysis (open access)

Application of pattern recognition techniques to crime analysis

The initial goal was to evaluate the capabilities of current pattern recognition techniques when applied to existing computerized crime data. Performance was to be evaluated both in terms of the system's capability to predict crimes and to optimize police manpower allocation. A relation was sought to predict the crime's susceptibility to solution, based on knowledge of the crime type, location, time, etc. The preliminary results of this work are discussed. They indicate that automatic crime analysis involving pattern recognition techniques is feasible, and that efforts to determine optimum variables and techniques are warranted. 47 figures (RWR)
Date: August 15, 1976
Creator: Bender, C. F.; Cox, L. A., Jr. & Chappell, G. A.
Object Type: Report
System: The UNT Digital Library