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Comparison of TRAC and RELAP5 reactor system calculations for a DEGB LOCA in K-14. 1
A comparison of TRAC and RELAP5 predictions of steady-state and DEGB LOCA results (FI phase) for K-14.1 has been made. Both codes had been previously benchmarked against 1985 L Reactor AC Flow data and were under configuration control. The purpose of the code-to-code comparison is to provide insight on the transient uncertainty in TRAC plenum and tank bottom plenum pressures. The comparisons focus on LOCA results between 0.5 and 2.0 s, which is the primary period of interest for Flow Instability (FI) limits.
Date:
September 1, 1990
Creator:
Griggs, D.P. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Liebmann, M.L. (Wais and Associates (United States))
Object Type:
Report
System:
The UNT Digital Library
Genes and gene expression: Localization, damage and control -- A multilevel and inter-disciplinary study
All projects are working toward a goal for describing the three dimensional nuclear topography in terms of relative spatial relationships among genes (specific DNA sequence). Methods are now being perfected to detect these genes, quantitatively and spatially, to perturb these genes specifically, and to measure the perturbation in order to assure specificity. We are developing methods to assay, after perturbation of the target DNA within living cells, whether or not only the target sequence are attacked while other sequences remain unharmed. We are now at the stage to do chemical gene modification or masking within living cells in a strictly sequence-specific manner. Soon, we will be able to study the function and the physical location of each gene in living cells with exquisite specificity. 25 refs., 15 figs.
Date:
September 1, 1990
Creator:
Ts'o, P.O.P.
Object Type:
Report
System:
The UNT Digital Library
Seismic analysis of reactor exhaust air filter compartment
The Filter Compartment (FC) in this analysis is a generic reactor airborne activity confinement filter compartment which possesses all the essential physical and mechanical properties of the Savannah River Site (SRS) confinement filters of Reactor Buildings K, L, and P. The filters belong to the Airborne Activity Confinement System (AACS). These filters absorb a significant amount of radioactive effluents from the exhausting air. The seismic excitation is input indirectly from the output of the seismic analysis of the 105 exhaust stack building in the form of floor response spectra. However, the 105 exhaust stack building was analyzed for seismic motions defined by free-field ground response spectra with a ZPA (Zero Period Acceleration) of 0.2G for all three orthogonal components of ground motion and a shape consistent with USNRC Regulatory Guide 1.60. Based upon equivalent dynamic analysis of the FC, DuPont engineers suggested modifications on the existing FC with heavy I-section beams (1). The scope of this phase I'' analysis, as requested by Seismic Engineering (2), is to carry out a scoping analysis'' of Frequency Analysis and Response Spectrum Analysis of the FC with DuPont suggested conceptual modifications. Our suggestion was that the existing FC without conceptual modifications be analyzed first. …
Date:
September 24, 1990
Creator:
Gong, Chung; Funderburk, E.L. & Jerrell, J.W.
Object Type:
Report
System:
The UNT Digital Library
Thulium-170 heat source
An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.
Date:
September 6, 1990
Creator:
Walter, Carl E.; Van Konynenburg, Richard & VanSant, James H.
Object Type:
Report
System:
The UNT Digital Library
A 40 mm bore quadrupole magnet for the SSC
A 40 mm bore quadrupole magnet design, called QC'', has been made for the SSC with the following parameters: 208 T/m gradient at 6500A, 2-layer cos 2 {theta}'' winding arrangement with 30 strand cable and one spacer wedge per coil. Structural support is provided by self-supporting interlocking collars; two types of symmetrical laminations are pre-assembled into collar packs for ease of assembly. This paper will describe the design of a prototype quadrupole magnet for the SSC and preliminary tests results on 1 m models. 7 refs., 6 figs., 2 tabs.
Date:
September 1, 1990
Creator:
Taylor, C.E.; Barale, P.; Caspi, S.; Dell'Orco, D.; Fritz, D.; Gilbert, W.S. et al.
Object Type:
Article
System:
The UNT Digital Library
H-Area Seepage Basins: Groundwater quality assessment report, Savannah River Site
During the second quarter of 1990 the wells which make up the H-Area Seepage Basins (H-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, nonvolatile beta, and gross alpha. A Gas Chromatograph Mass Spectrometer (GCMS) scan was performed on all wells sampled to determine any hazardous organic constituents present in the groundwater. The primary contaminants observed at wells monitoring the H-Area Seepage Basins are tritium, nitrate, mercury, gross alpha, nonvolatile beta, trichloroethylene (TCE), tetrachloroethylene, lead, cadmium, arsenic, and total radium. Concentrations of at least one of the following constituents: tritium, nitrate, total radium, gross alpha, nonvolatile beta, mercury, lead, cadmium, trichloroethylene chromium, and arsenic in excess of the primary drinking water standard (PDWS) were observed in at least one well monitoring the H-Area Seepage Basins. Elevated levels of tritium above the PDWS were exhibited in seventy-seven of the 105 (73%) groundwater monitoring wells. Elevated levels of nitrate in excess of the PDWS were exhibited in forty-four of the 105 (42%) monitoring wells.
Date:
September 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mechanical and electromagnetic analysis of 50 millimeter designs for the SSC dipole
Several designs for the Superconducting Super Collider dipole magnet have been analyzed. This note discusses the mechanical and electromagnetic features of each design. Electromagnetic and Mechanical analyses were performed using hand, computer programs and finite element techniques to evaluate the design. 10 refs., 6 figs., 3 tabs.
Date:
September 1, 1990
Creator:
Jayakumar, J.; Leung, K.; Nobrega, F.; Orrell, D.; Sanger, P.; Snitchler, G. et al.
Object Type:
Article
System:
The UNT Digital Library
L to H mode transitions and associated phenomena in divertor tokamaks
This is the final report for the research project titled L to H Mode Transitions and Associated Phenomena in Divertor Tokamaks.'' The period covered by this project is the fiscal year 1990. This report covers the development of Advanced Two Chamber Model.
Date:
September 1, 1990
Creator:
Punjabi, A. (Hampton Univ., VA (United States))
Object Type:
Report
System:
The UNT Digital Library
NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts
The primary objective of the project is to investigate the magnetic nature of the higher alcohol synthesis catalyst-Cu/Co supported on specific supports: chromia and titania with and without an alkali metal promoter, and examine the relations between catalytic and magnetic properties.
Date:
September 14, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Selected problems in experimental intermediate energy physics
The objectives of this research program are to: investigate forefront problems in experimental intermediate energy physics; educate students in this field of research; and, develop the instrumentation necessary to undertake this experimental program. Generally, the research is designed to search for physical processes which cannot be explained by conventional models of elementary interactions. This includes the use of nuclear targets where the nucleus provides a many body environment of strongly perturbation of a known interaction by this environment. Unfortunately, such effects may be masked by the complexity of the many body problem and may be difficult to observe. Therefore, experiments must be carefully chosen and analyzed for deviations from the more conventional models. There were three major thrusts of the program; strange particle physics, where a strange quark is embedded in the nuclear medium; muon electro-weak decay, which involves a search for a violation of the standard model of the electro-weak interaction; and measurement of the spin dependent structure function of the neutron.
Date:
September 1, 1990
Creator:
Mayes, B.W.; Hungerford, E.V. & Pinsky, L.S.
Object Type:
Report
System:
The UNT Digital Library
Quench propagation in the SSC dipole magnets
The effects of quench propagation are modeled in 40mm and 50mm diameter collider dipole magnet designs. A comparative study of the cold diode (passive) and quench heater (active) protection schemes will be presented. The SSCQ modeling program accurately simulates the axial quench velocity and uses phenomenological time delays for turn-to-turn transverse propagation. The axial quench velocity is field dependent and consequently, each conductor's quench profile is tracked separately. No symmetry constraints are employed and the distribution of the temperatures along the conductor differs from the adiabatic approximation. A single magnet has a wide margin of self protection which suggests that passive protection schemes must be considered. 6 refs., 3 figs., 1 tab.
Date:
September 1, 1990
Creator:
Lopez, G. & Snitchler, G.
Object Type:
Article
System:
The UNT Digital Library
Description of the National Highway Planning Network
The National Highway Planning Network is a data base of major highways in the continental United States. It is a foundation for analytic studies of highway performance, for vehicle routing and scheduling problems, and for mapping purposes. The network is based on a set of roadways digitized from the National Atlas by the US Geological Survey. It has been enhanced at Oak Ridge National Laboratory by adding additional roads and attribute detail and correcting topological errors to produce a true analytic network. This documentation is intended primarily to assist users of this data base by describing its structure, data elements, and development.
Date:
September 1, 1990
Creator:
Peterson, B.E.
Object Type:
Report
System:
The UNT Digital Library
Faculty Recital: 1990-09-17 - Pamela Mia Paul, piano
Access:
Use of this item is restricted to the UNT Community
Faculty recital performed at the UNT College of Music Recital Hall.
Date:
September 17, 1990
Creator:
Paul, Pamela Mia
Object Type:
Sound
System:
The UNT Digital Library
A Tutorial on the Construction of High-Performance Resolution/Paramodulation Systems
Over the past 25 years, researchers have written numerous deduction systems based on resolution and paramodulation. Of these systems, a very few have been capable of generating and maintaining a formula database "containing more than just a few thousand clauses. These few systems were used to explore mechanisms for rapidly extracting limited subsets of relevant" clauses. We have written this tutorial to reflect some of the best ideas that have emerged and to cast them in a form that makes them easily accessible to students wishing to write their own high-performance systems.
Date:
September 1990
Creator:
Butler, R. & Overbeek, R.
Object Type:
Report
System:
The UNT Digital Library
A Theory for Fluidelastic Instability of Tube-Support-Plate Inactive Modes
Fluid-elastic instability of loosely supported tubes, vibrating in a tube-support-plate (TSP) inactive mode, is suspected to be one of the main causes of tube failure in some operating steam generators and heat exchangers. This report presents a mathematical model for fluid-elastic instability of loosely supported tubes exposed to non-uniform cross-flow. The model incorporates all motion-dependent fluid forces based on the unsteady flow theory. In the unstable region associated with a TSP-inactive mode, tube motion can be described by two linear models: TSP-inactive mode when tubes do not strike the TSP, and TSP-active mode when tubes do strike the TSP. A bilinear model (consisting of these linear models) presented in this report simulates the characteristics of fluid-elastic instability of loosely supported tubes in stable and unstable regions associated with TSP-inactive modes. Analytical results obtained with the model are compared with published experimental data; they agree reasonably well. The prediction procedure presented for fluid-elastic instability response of loosely supported tubes is applicable to the stable and unstable regions of the TSP-inactive mode.
Date:
September 1990
Creator:
Cai, Y.; Chen, Shoei-Sheng & Chandra, S.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0099.0358]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "U O linebacker Joe Bowden (45) attempts to block a Pitt field goal earlier this season."
Date:
September 15, 1990
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0098.0376]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "South African President F. W. de Klerk, fourth from left, meets on Capital Hill Tuesday with senators."
Date:
September 25, 1990
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Southwest Retort, Volume 44, Number [6], September 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
September 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
[Photograph 2012.201.B0140.0090]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "But the oil industry battle to keep drilling mud's and production wastes - including saltwater produced with oil and gas - off the EPA hazardous materials list may have to be waged again, Jim Collins of ARCO Oil and Gas Co. said Tuesday."
Date:
September 18, 1990
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0221]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OU's Mike Coats tackles Pittsburgh's Doug Hetzler during the Sooners' 52-10 win."
Date:
September 15, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0156.0108]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Millwood's Mandrell Dean runs away from a Northeast defender during Thursday night's Falcons victory."
Date:
September 13, 1990
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0533]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mr. and Mrs. Duane Dahlgren were honorees at a brunch at the Oklahoma City Golf and Country Club..."
Date:
September 24, 1990
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0293]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ernest Wagoner, left, and his wife, Belulah, right, who have been married seven years, began their romance at the Edmond Senior Center."
Date:
September 25, 1990
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0206]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mr. and Mrs. Andy Coats and Mr. and Mrs. Dick Williams from left sample the hor d'oeuvres at the zoo party."
Date:
September 8, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History