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[Analysis of Momentum and Impurity Confinment in TFTR (1990)]
Work during the present grant period has been concentrated in two areas and are discussed in this report: (1) a review of momentum confinement experiments in tokamaks, of momentum confinement theories and of previous comparisons of the two; and (2) analysis and documentation of the dedicated power-scan rotation experiment performed on TFTR in September 1988.
Date:
December 31, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Analytical mass spectrometry. Abstracts
This 43rd Annual Summer Symposium on Analytical Chemistry was held July 24--27, 1990 at Oak Ridge, TN and contained sessions on the following topics: Fundamentals of Analytical Mass Spectrometry (MS), MS in the National Laboratories, Lasers and Fourier Transform Methods, Future of MS, New Ionization and LC/MS Methods, and an extra session. (WET)
Date:
December 31, 1990
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Androgen receptor-based imaging agents for the prostate: Synthesis and tissue distribution studies with tritium and fluorine-18 labeled androgens
None
Date:
December 31, 1990
Creator:
Liu, A.; Carlson, K. E.; Katzenellenbogen, J. A.; VanBrocklin, H. F.; Mathias, C. J. & Welch, M. J.
Object Type:
Report
System:
The UNT Digital Library
The ANL electric vehicle battery R&D program for DOE-EHP. Quarterly progress report, October--December 1990
The Electrochemical Technology Program at Argonne National Laboratory (ANL) provides technical and programmatic support to DOE`s Electric and Hybrid Propulsion Division (DOE-EBP). The goal of DOE-EHP is to advance promising EV propulsion technologies to levels where industry will continue their commercial development and thereby significantly reduce petroleum consumption in the transportation sector of the US economy. In support of this goal, ANL provides research, development, testing/evaluation, post-test analysis, modeling, database management, and technical management of industrial R&D contracts on advanced battery and fuel cell technologies for DOE-EBP. This report summarizes the objectives, background, technical progress, and status of ANL electric vehicle battery R&D tasks for DOE-EHP during the period of October 1, 1990 through December 31, 1990. The work is organized into the following six task areas: 1.0 Project Management; 3.0 Battery Systems Technology; 4.0 Lithium/Sulfide Batteries; 5.0 Advanced Sodium/Metal Chloride Battery; 6.0 Aqueous Batteries; 7.0 EV Battery Performance/Life Evaluation.
Date:
December 31, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Apparatus and method for separating constituents
A centrifugal separator apparatus and method for improving the efficiency of the separation of constituents in a fluid stream. A cyclone separator includes an assembly for separately discharging both constituents through the same end of the separator housing. A rotary separator includes a rotary housing having a baffle disposed therein for minimizing the differential rotational velocities of the constituents in the housing, thereby decreasing turbulence, and increasing efficiency. The intensity of the centrifugal force and the time which the constituents reside within the housing can be independently controlled to improve efficiency of separation. 4 figs.
Date:
December 31, 1990
Creator:
Maronde, C. P. & Killmeyer, R. P., Jr.
Object Type:
Patent
System:
The UNT Digital Library
Application of hydration thermodynamics to control of the DWPF process. Revision 1
The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) will incorporate the radioactivity in the 130 million liters of high-level nuclear waste at SRS in a stable borosilicate glass. Glass product specifications requite control of processing parameters to ensure glass durability. A model of glass durability, based on hydration thermodynamics, has been used at SRS to aid in formulation of waste glasses; to explain the relative durability of different glasses under identical test conditions (MCC-1 test ); and to explain the effects of changing test conditions on the observed durability of a given glass. This model has now been modified for use in control of the DWPF. It provides a tool which relates glass durability to parameters which can be controlled in the DWPF process. It provides a tool which relates glass durability to parameters which can be controlled in the DWPF process, primarily chemical composition. In this paper, the model is presented, and its projected role in control of the DWPF process is described.
Date:
December 31, 1990
Creator:
Plodinec, M. J.
Object Type:
Article
System:
The UNT Digital Library
Applications of neural networks to monitoring and decision making in the operation of nuclear power plants. Summary
Application of neural networks to monitoring and decision making in the operation of nuclear power plants is being investigated under a US Department of Energy sponsored program at the University of Tennessee. Projects include the feasibility of using neural networks for the following tasks: (1) diagnosing specific abnormal conditions or problems in nuclear power plants, (2) detection of the change of mode of operation of the plant, (3) validating signals coming from detectors, (4) review of ``noise`` data from TVA`s Sequoyah Nuclear Power Plant, and (5) examination of the NRC`s database of ``Letter Event Reports`` for correlation of sequences of events in the reported incidents. Each of these projects and its status are described briefly in this paper. This broad based program has as its objective the definition of the state-of-the-art in using neural networks to enhance the performance of commercial nuclear power plants.
Date:
December 31, 1990
Creator:
Uhrig, R. E.
Object Type:
Article
System:
The UNT Digital Library
Apportionment of multiple aerosol size distributions modes using factor analysis techniques
This research in progress is concerned with developing the capability to ojectively partition aerosol size distribution data into a small number of modes, that together explain most of the variation of the observed data. It is desired to determine from analysis in the field of the optical spectrometer data when a particular mode is present and to collect filter samples to determine the chemical composition of that mode. The results would relate aerosol size distributions to chemical composition.
Date:
December 31, 1990
Creator:
Williams, Allen
Object Type:
Report
System:
The UNT Digital Library
An approach for selecting safety class items
DOE Order 6430.1A, General Design Criteria, requires that DOE facilities be evaluated with regard to ``safety class items.`` Safety class items are defined as ``systems, components, and structures, including portions of process systems, whose failure could adversely affect the environment or safety and health of the public. Determination of safety classification is based on analysis of potential abnormal and accidental scenario consequences as presented in the Safety Analysis Report.`` Although the General Design Criteria defines safety class items, it does not provide an approach for selecting safety class items. The purpose of this report is to present the approach which was developed for selecting safety class items in a specific nonreactor nuclear facility project at the Savannah River Site (SRS).
Date:
December 31, 1990
Creator:
Low, J. M.
Object Type:
Article
System:
The UNT Digital Library
Arctic hydrology and meteorology. Annual report
During 1990, we have continued our meteorological and hydrologic data collection in support of our process-oriented research. The six years of data collected to data is unique in its scope and continuity in a North Hemisphere Arctic setting. This valuable data base has allowed us to further our understanding of the interconnections and interactions between the atmosphere/hydrosphere/biosphere/lithosphere. The increased understanding of the heat and mass transfer processes has allowed us to increase our model-oriented research efforts.
Date:
December 31, 1990
Creator:
Kane, Douglas L.
Object Type:
Report
System:
The UNT Digital Library
Ash accumulation effects using bench marked 0-D model
Ash accumulation is a key issue relative to our ability to achieve D-{sup 3}He ARIES III burn conditions. 1-1/2-d transport simulations using the BALDUR code have been used to examine the correlation between the global ash particle confinement time and the edge exhaust (or recycling) efficiency. This provides a way to benchmark the widely used 0-D model. The burn conditions for an ARIES-III plasma with various ash edge recycling coefficients are examined.
Date:
December 31, 1990
Creator:
Hu, S. C.; Guo, J. P. & Miley, G. H.
Object Type:
Article
System:
The UNT Digital Library
An assessment of PCB degradation by microogransims including methods for measuring mineralization
These studies sought to isolate and identify organism(s) from PCB contaminated soil and sediment that degrade PCB; to provide information on the potential of organisms in soil samples taken from a PCB-contaminated area to mineralize or dechlorinate PCB congeners; to assess potential enhancement of PCB biodegradation as a result of nutritional amendment of the samples; and to carry out analyses of successive lysimeter samples to determine whether field treatments have had an effect on the capacity of soil microbes to mineralize PCBS. We have expended considerable effort to validate the fractionation procedure used to assess mineralization and conversion of PCB substrates. The assessment relies on the ability to measure [{sup 14}C]-labeled CO{sub 2} in the presence of potentially volatile [{sup 14}C]-labeled PCB and degradation products to differentiate between volatile and non-volatile [{sup 14}C]-labeled compounds between water-soluble products of metabolism and a mixture of unchanged substrate and other water-insoluble products and between metabolism and loss or non-extractability of the substrate.
Date:
December 31, 1990
Creator:
Hadden, C.; Edenborn, H.; Osborne, T.; Holdsworth, G. & Revis, N.
Object Type:
Report
System:
The UNT Digital Library
Assessment of RAMONA-3B methodology with FRIGG dynamic tests
The computer codes used at Brookhaven National Laboratory to compute BWR safety parameters are the Engineering Plant Analyzer (EPA) and RAMONA-3B/MOD1. Both codes have the same methodology for modeling thermal hydraulic phenomena: drift-flux formulation, two-phase multipliers for the wall friction and form losses calculations, and the momentum integral approach for spatial integration of the loop momentum equations. Both codes use explicit integration methods for solving ordinary differential equations. It is concluded that both the codes are capable of modelling the instability problems for a BWR. The accuracy of thermohydraulics codes predictions was assessed by modelling oscillatory FRIGG tests. Nodalizations studies showed that 24 axial nodes were sufficient for a converged solution, 12 axial nodes produced an error of 4.4% in the gain of the power to flow transfer function. The code predicted consistently the effects of power and inlet subcooling on gain and system resonance frequency. The comparisons showed that the code predicted the peak gains with a mean difference from experiments of 7% {plus_minus} 30% for all the tests modeled. The uncertainty in the experimental data is {minus}11% to +12%. The mean difference in the predicted frequency at the peak gain is {minus}6% {plus_minus} 14%.
Date:
December 31, 1990
Creator:
Rohatgi, U. S.; Neymotin, L. Y. & Wulff, W.
Object Type:
Article
System:
The UNT Digital Library
Attachment 3, RLCA calculation No. P 191-1/3, review of 105K reactor tank expansion ring
This analysis package reviews the adequacy of the expansion plate ring for the reactor tank. This review utilizes the results of an existing stress analysis and incorporates the results of a Reactor Loss of Coolant Accident (RLCA) seismic analysis of the reactor tank shell.
Date:
December 31, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Automated spike preparation system for Isotope Dilution Mass Spectrometry (IDMS)
Isotope Dilution Mass Spectrometry (IDMS) is a method frequently employed to measure dissolved, irradiated nuclear materials. A known quantity of a unique isotope of the element to be measured (referred to as the ``spike``) is added to the solution containing the analyte. The resulting solution is chemically purified then analyzed by mass spectrometry. By measuring the magnitude of the response for each isotope and the response for the ``unique spike`` then relating this to the known quantity of the ``spike``, the quantity of the nuclear material can be determined. An automated spike preparation system was developed at the Savannah River Site (SRS) to dispense spikes for use in IDMS analytical methods. Prior to this development, technicians weighed each individual spike manually to achieve the accuracy required. This procedure was time-consuming and subjected the master stock solution to evaporation. The new system employs a high precision SMI Model 300 Unipump dispenser interfaced with an electronic balance and a portable Epson HX-20 notebook computer to automate spike preparation.
Date:
December 31, 1990
Creator:
Maxwell, S. L., III & Clark, J. P.
Object Type:
Article
System:
The UNT Digital Library
Automated system for validating balance performance
Manual tank calibrations often have variabilities of both a random and systematic nature that often affect the quality of the data collected for determining accurate calibration equations. When performing the calibration run, data omissions and transcriptions often occur (forgetting to tare weigh the prover vessel or miswriting a displayed value). A computer can be used to minimize these errors associated with the logging of data. This paper describes a IBM compatible, portable computer based system, developed at the Savannah River Site (SRS), that was used to calibrate three tanks in the second quarter 1990. It received data directly from instrumentation such as Ruska differential pressure sensors and electronic balances, while prompting the technicians to perform the various steps in the calibration procedure. This automated system greatly improved the quality of data for calculating the calibration equation for each of these tanks over previous calibration runs.
Date:
December 31, 1990
Creator:
Gibbs, P. W. & Clark, J. P.
Object Type:
Article
System:
The UNT Digital Library
Automated tank calibration system using a portable computer
Manual tank calibrations often have variabilities of both a random and systematic nature that often affect the quality of the data collected for determining accurate calibration equations. When performing the calibration run, data omissions and transcriptions often occur (forgetting to tare weigh the prover vessel or miswriting a displayed value). A computer can be used to minimize these errors associated with the logging of data. This paper describes a IBM compatible, portable computer based system, developed at the Savannah River Site (SRS), that was used to calibrate three tanks in the second quarter 1990. It received data directly from instrumentation such as Ruska differential pressure sensors and electronic balances, while prompting the technicians to perform the various steps in the calibration procedure. This automated system greatly improved the quality of data for calculating the calibration equation for each of these tanks over previous calibration runs.
Date:
December 31, 1990
Creator:
Holt, S. H.; Harvel, C. D. & Clark, J. P.
Object Type:
Article
System:
The UNT Digital Library
Automated tank calibrations using installed measurement equipment
A menu driven automatic tank calibration program was established at one of the new facilities at the Savannah River Site (SRS). Approximately 100 tanks ranging in size from 10 to 21,000 liters were calibrated. Tank level instrumentation included a precision level system using Ruska instruments multiplexed to several tanks via a Scanivalve system, standard process level differential pressure transmitters, capacitance probes, and temperature devices. Most of the tank instruments were connected to data collection computers. Scales were temporarily connected to the data collection computers to input solution weights and to record the scale calibration data. Flat panel displays were used for information feedback to operators including when to transmit weighs, data transmitted, tank instrument readings, and other procedural steps. The automated data collection permitted signal averaging and consistency checks to improve the quality of the data and minimize repeat calibrations. This paper will provide a description of the calibration system, equipment used, unique features of the system, and an assessment of the quality of the data collected.
Date:
December 31, 1990
Creator:
Crawford, J. M.
Object Type:
Article
System:
The UNT Digital Library
Axial power monitoring uncertainty in the Savannah River Reactors
The results of this analysis quantified the uncertainty associated with monitoring the Axial Power Shape (APS) in the Savannah River Reactors. Thermocouples at each assembly flow exit map the radial power distribution and are the primary means of monitoring power in these reactors. The remaining uncertainty in power monitoring is associated with the relative axial power distribution. The APS is monitored by seven sensors that respond to power on each of nine vertical Axial Power Monitor (APM) rods. Computation of the APS uncertainty, for the reactor power limits analysis, started with a large database of APM rod measurements spanning several years of reactor operation. A computer algorithm was used to randomly select a sample of APSs which were input to a code. This code modeled the thermal-hydraulic performance of a single fuel assembly during a design basis Loss-of Coolant Accident. The assembly power limit at Onset of Significant Voiding was computed for each APS. The output was a distribution of expected assembly power limits that was adjusted to account for the biases caused by instrumentation error and by measuring 7 points rather than a continuous APS. Statistical analysis of the final assembly power limit distribution showed that reducing reactor power …
Date:
December 31, 1990
Creator:
Losey, D. C. & Revolinski, S. M.
Object Type:
Article
System:
The UNT Digital Library
A backscattering spectrometry device for identifying unknown elements present in a workpiece
This invention is comprised of a backscattering spectrometry method and device for identifying and quantifying impurities in a workpiece during processing and manufacturing of that workpiece. While the workpiece is implanted with an ion beam, that same ion beam backscatters resulting from collisions with known atoms and with impurities within the workpiece. Those ions backscatter along a predetermined scattering angle and are filtered using a self-supporting filter to stop the ions with a lower energy because they collided with the known atoms of the workpiece of a smaller mass. Those ions which pass through the filter have a greater energy resulting from impact with impurities having a greater mass than the known atoms of the workpiece. A detector counts the number and measures the energy of the ions which pass through the filter. From the energy determination and knowledge of the scattering angle, a mass calculation determines the identity, and from the number and solid angle of the scattering angle, a relative concentration of the impurity is obtained.
Date:
December 31, 1990
Creator:
Doyle, Barney L. & Knapp, James A.
Object Type:
Patent
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 68, No. 365, Ed. 1 Monday, December 31, 1990
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1990
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Behavior of liquid metal droplets in an aspirating nozzle. Revision
Measurements of particle size, velocity, and relative mass flux were made on spray field produced by aspirating liquid tin into 350{degrees}C argon flowing through a venturi nozzle via a small orifice in the throat of the nozzle. Details of the aspiration and droplet formation process were observed through windows in the nozzle. The spatial distribution of droplet size, velocity, and relative number density were measured at a location 10 mm from the nozzle exit. Due to the presence of separated flow in the nozzle, changes in nozzle inlet pressure did not significantly effect resulting droplet size and velocity. This suggests that good aerodynamic nozzle design is required if spray characteristics are to be controlled by nozzle flow. 5 refs.
Date:
December 31, 1990
Creator:
Swank, W. D.; Fincke, J. R. & Mason, T. A.
Object Type:
Article
System:
The UNT Digital Library
Biological Production of Ethanol From Coal. [Quarterly Report], December 22, 1989--March 21, 1990
A batch kinetic study involving Clostridium lungdahlii in a mineral medium was carried out in order to provide baseline data for the effects of nutrients on product ratio and kinetics. The use of this minimal medium containing vitamins, minerals, select amino acids and salts showed both a lower maximum specific growth rate and a lower maximum specific uptake rate than found when using a complex medium supplemented with 0.01% yeast extract. At the same time, the product ratio was improved slightly in favor of ethanol over acetate. Future experiments will measure the effects of ammonia and phosphate limitation on product ratio and process kinetics.
Date:
December 31, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Biological Production of Ethanol From Coal. [Quarterly Report], June 22, 1990--September 21, 1990
Previous results have shown that the yeast extract concentration and the medium pH significantly affect the ratio of ethanol to acetate in the product stream when fermenting CO, CO{sub 2} and H{sub 2} in synthesis gas to products by Clostridium ljungdahlii. Further experimentation has demonstrated the impact of eliminating yeast extract from the medium (except for the slight quantity transferred with the inoculm), especially when coupled with low pH. An ethanol to acetate product ratio of 4.0 was obtained at pH 4.5 without yeast extract present in the medium when using culture previously exposed to growth-limiting H{sub 2}S. The product ratio was 2.0 at pH 4.0 (nearly three times the value of pH 4.5 and nine times the value of pH 5.0) without yeast extract present in the media when using the standard (unexposed) culture.
Date:
December 31, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library