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FLOWTRAN benchmarking with onset of flow instability data from 1988 Columbia University single-tube OFI experiment
Benchmarking FLOWTRAN, Version 16.2, with an Onset of Significant Voiding (OSV) criterion against measured Onset of Flow Instability (OFI) data from the 1988--89 Columbia University downflow tests has shown that FLOWTRAN with OSV is a conservative OFI predictor. Calculated limiting flow rates based on the Savannah River Site (SRS) OSV criterion were always higher than the measured flow rates at OFI. This work supplements recent FLOWTRAN benchmarking against 1963 downflow tests at Columbia University and 1988 downflow tests at the Heat Transfer Laboratory. These studies provide confidence that using FLOWTRAN with an OSV based criterion for SRS reactor limits analyses will generate operating limits that are conservative with respect to OFI, the criterion selected to prevent fuel damage.
Date:
June 1, 1990
Creator:
Chen, K.; Paul, P. K. & Barbour, K. L.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Nb-Ti superconductors with artificial pinning structures
A series of multifilamentary APC Nb-Ti superconductors have been made with Nb added as a normal second phase to provide flux pinning centers. Two compositions, 12.5% vol % and 25 vol % Nb in Nb-Ti, have fabricated into multifilamentary composites using two different fabrication methods. One method used hot isostatic compaction and hot extrusion thoughout the processing. The other method (bundle-and-draw process) discontinued all hot processing at an intermediate level. While the J{sub c} values of the bundle-and-draw wires are quite promising, the critical current of the extruded wires appears to be limited by poor uniformity of the filament cross-sectional area along the conductor length. The large values of the index of the resistive transition and small filament standard-deviation-to-average area ratios observed in the wires produced by the bundle-and-draw process suggest extrinsic factors have little effect on J{sub c}. The variation in J{sub c} as the wire diameter is reduced appears to be most strongly affected by intrinsic factors: Nb distribution and pinning strength. The final filament microstructure and Nb spacing are shown to be difficult to calculate, e.g., the mean Nb spacing near the final wire size may be {1/2} to 1/3 that of the calculated value. 5 refs., …
Date:
June 1, 1990
Creator:
Dietderich, D. R. & Scanlan, R. M.
Object Type:
Article
System:
The UNT Digital Library
Molecular biological enhancement of coal biodesulfurization. [Rhodococcus, thiobacillus]
The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fast-growing chemolithotropic bacterium; conduct a batch-mode optimization/analysis of scale-up variables.
Date:
June 14, 1990
Creator:
Litchfield, J. H.; Fry, I.; Wyza, R. E.; Palmer, D. T.; Zupancic, T. J. & Conkle, H. N.
Object Type:
Report
System:
The UNT Digital Library
Experimental development of nuclear pumped laser candidate for inertial confinement fusion driver
A report is given on progress made during the second year of a three year contract studying the feasibility of nuclear pumping the atomic iodine laser. Experimental results are presented showing efficiencies of 25--38% at converting neutron-induced nuclear reaction energy in the excimer XeBr into UV photons which can be used to pump the laser. Parametric studies were done utilizing the {sup 10}B(n,{alpha}){sup 7}Li reaction, with three bromine donor chemicals, over a range of pressures and mix ratios, to optimize the fluorescence efficiency.
Date:
June 6, 1990
Creator:
Miley, George H.
Object Type:
Report
System:
The UNT Digital Library
Benchmarking of flowtran with Mark-22 mockup flow excursion test data from Babcock Wilcox
Version 16.2 of the FLOWTRAN code with a Savannah River Site (SRS) working criterion (St=0.00455) for the onset of significant void (OSV) was benchmarked against power and flow excursion data derived from tests at the Babcock Wilcox Alliance Research Center test facility. This document presents analyses which show that FLOWTRAN accurately predicts the mockup test assembly thermal-hydraulic behavior during the steady state and LOCA transient conditions, and that FLOWTRAN with a Savannah River Site (SRS) working limits criterion (St=0.00455) conservatively predicts the OFI power.
Date:
June 1, 1990
Creator:
Chen, Juo-Fu.
Object Type:
Report
System:
The UNT Digital Library
Heavy metal contamination in TIMS Branch sediments
The objective of this memorandum is to summarize results of previous sediment studies on Tims Branch and Steed's Pond conducted by Health Protection (HP) and by the Savannah River Laboratory (SRL) in conjunction with Reactor Materials Engineering Technology (RMET). The results for other heavy metals, such as lead, nickel, copper, mercury, chromium, cadmium, zinc, and thorium are also summarized.
Date:
June 25, 1990
Creator:
Pickett, J.B.
Object Type:
Report
System:
The UNT Digital Library
Knowledges and abilities catalog for nuclear power plant operators: Savannah River Site (SRS) production reactors
The Knowledges and Abilities Catalog for Nuclear Power Plant Operations: Savannah River Site (SRS) Production Reactors, provides the basis for the development of content-valid certification examinations for Senior Reactor Operators (SROs) and Central Control Room Supervisors (SUP). The position of Shift Technical Engineer (STE) has been included in the catalog for completeness. This new SRS reactor operating shift crew position is held by an individual holding a CCR Supervisor Certification who has received special engineering and technical training. Also, the STE has a Bachelor of Science degree in engineering or a related technical field. The SRS catalog contains approximately 2500 knowledge and ability (K/A) statements for SROs and SUPs at heavy water moderated production reactors. Each K/A statement has been rated for its importance to the safe operation of the plant in a manner ensuring the health and safety of the public. The SRS K/A catalog is presently organized into five major sections: Plant Systems grouped by Safety Function, Plant Wide Generic K/As, Emergency Plant Evolutions, Theory and Components (to be developed).
Date:
June 20, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Multi-beam injector development at LBL
LBL is developing a multi-beam injector that will be used for scaled accelerator experiments related to Heavy Ion Fusion. The device will produce sixteen 0.5 Amp beams of C+ at 2 MeV energy. The carbon arc source has been developed to the point where the emittance is within a factor of four of the design target. Modelling of the source behavior to find ways to reduce the emittance is discussed. Source lifetime and reliability is also of paramount importance to us and data regarding the lifetime and failure modes of different source configurations is discussed. One half of the accelerating column has been constructed and tested at high voltage. One beam experiments in this half column are underway. The second half of the column is being built and the transition 2 MV experiments should begin soon. In addition to beam and source performance we also discuss the controls for the injector and the electronics associated with the source and current injection. 3 refs., 2 figs.
Date:
June 1, 1990
Creator:
Rutkowski, H. L.; Faltens, A.; Brodzik, D. A.; Johnson, R. M.; Pike, C. D.; Vanecek, D. L. (Lawrence Berkeley Lab., CA (United States)) et al.
Object Type:
Article
System:
The UNT Digital Library
Development of improved iron Fischer-Tropsch catalysts
The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date:
June 17, 1990
Creator:
Bukur, D.B.
Object Type:
Report
System:
The UNT Digital Library
Kinetic behavior of solid particles in fluidized beds
The overall objectives of this project are to develop experimental techniques for measuring the forces of fluidized particles, and to predict the solid-gas performance in fluidized beds by using data analysis system, and by elucidating the intrinsic mechanism of erosion and attrition phenomena in fluidized beds. The reduction of erosion and attrition rates is one of the critical engineering problems for the design and operation of fluidized bed combustors. Specifically, the objectives are to: (1) develop the experimental techniques to measure the forces of solid particles prevailing in fluidized beds: (2) measure and characterize the forces of solid particles in various types of fluidized beds with various configurations (conventional and spouted fluidized beds) and with different scales (10, 20, and 30cm) under various fluidization conditions (particle size, bed aspect ratio and gas velocity); (3) find and verify the mechanism of erosion rates of in-bed tubes and attrition rates of fluidized particles by forces of solid particles in fluidized beds. We developed three different kinds of measurement methods, i.e., fracture sensitive sensor, piezoelectric sensor and gas pressure fluctuation method. By using these methods the exact forces of solid particles, including the transient corporate in fluidized beds, were systematically measured. Simultaneously, the …
Date:
June 1, 1990
Creator:
Kono, H.O.
Object Type:
Report
System:
The UNT Digital Library
F-Area seepage basins, groundwater quality assessment report, first quarter 1990
During the first quarter of 1990, wells which make up the F-Area Seepage Basins (F-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, gross alpha, and nonvolatile beta. The primary contaminants observed at wells monitoring the F-Area Seepage Basins are tritium, nitrate, cadmium, lead, total radium, gross alpha, and nonvolatile beta. Concentrations of at least one of the following constituents: tritium, nitrate, total radium, gross alpha, cadmium, lead, tetrachloroethylene, nonvolatile beta, endrin, lindane, barium, fluoride, mercury, and trichlorethylene in excess of the primary drinking water standard (PDWS) were observed in at least one well monitoring the F-Area Seepage Basins. Tritium concentrations above the PDWS occur in forty-four of the fifty-nine (75%) groundwater monitoring wells. Nitrate concentrations above the PDWS occur in thirty-four of the fifty-nine (59%) groundwater wells. The radionuclides, total radium, gross alpha, and nonvolatile beta, exceed the PDWS is over twenty-five percent of the groundwater wells. Heavy metals, cadmium and lead in particular, exceed the PDWS in over twelve percent of the wells. Since 1987, tritium and nitrate concentrations have been steadily declining in a majority of the wells. However, tritium concentrations, from fourth quarter 1989 to first quarter …
Date:
June 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Guest Artist Recital: 1990-06-27 - Danielle Martin, piano
Access:
Use of this item is restricted to the UNT Community
Guest artist recital performed at the UNT College of Music Recital Hall.
Date:
June 27, 1990
Creator:
Martin, Danielle
Object Type:
Sound
System:
The UNT Digital Library
A Comparative Study of Iron-, Nickel-, and Cobalt-Base Weldments Exposed in TVA 20-MW and Rocketdyne Atmospheric Fluidized Bed Combustors
Experimental iron-, nickel-, and cobalt-base weldment materials were exposed in TVA 20-MW and Rocketdyne atmospheric fluidized bed combustors (AFBCs) at 849 degrees C for 1261 h and 871 degrees C for 1000 h, respectively. Post-exposure analyses were conducted at Argonne National Laboratory. All specimens experienced different degrees of internal oxidation/sulfidation. Among eight filler materials, Marathon 25/35R and Haynes 188 showed the least corrosion attack, i.e., less than 0.5 mm/yr. A high nickel content in the weldment was unfavorable for corrosion resistance in the AFBC environment. Differences in the coal/bed chemistry of the TVA and Rocketdyne systems yielded different corrosion behavior in the materials. Calcium sulfate deposits on the specimens significantly affected the internal oxidation/sulfidation of the alloys. The results of this study supplement the material data base, in particular that of weldment performance, and aid in materials selection for AFBC applications.
Date:
June 1990
Creator:
Wang, D. Y. & Natesan, K.
Object Type:
Report
System:
The UNT Digital Library
PC-DYMAC: Personal Computer-DYnamic Materials ACcounting
This manual was designed to provide complete documentation for the computer system used by the EBR-II Fuels and Materials Department, Argonne National Laboratory-West (ANL-W) for accountability of special nuclear materials (SNM). This document includes background information on the operation of the Fuel Manufacturing Facility (FMF), instructions on computer operations in correlation with production and a detailed manual for PC-DYMAC operation.
Date:
June 1990
Creator:
Jackson, B. Gail
Object Type:
Report
System:
The UNT Digital Library
Practical Superconductor Development for Electrical Power Applications Semiannual Report: October 1989-June 1990
Progress report for the superconductor program at Argonne National Laboratory discussing the group's activities and research. This report describes technical progress of research and development efforts aimed at producing superconducting components based on the Y-Ba-Cu, Bi-Sr-Ca-Cu, and Tl-Ba-Ca-Cu oxide systems.
Date:
June 1990
Creator:
Argonne National Laboratory. Materials and Components Technology Division.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0142.0325]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ed Cook II, Nancy Cook, Chris and Dana Gordon, celebrate with Mike and Cathy Cross, from left, after the Boomerang Golf Tournament."
Date:
June 12, 1990
Creator:
Sanger, Helen Ford
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0135.0602]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "There are no typical days for the Cleveland County chapter of the American Red Cross."
Date:
June 12, 1990
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0146.0217]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Preparation - In the foreground, Marilyn Peil, registrar, and Tom Jones, a docent, examine a sculpture being prepared for the National Academy of Western Art exhibit and awards show this week end at the National cowboy Hall of Fame and Western Heritage Center."
Date:
June 4, 1990
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0768]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "That is the opinion of Mark Dale, president of the Central Oklahoma Home Builders Association."
Date:
June 11, 1990
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0154.0410]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Too little time and money-a common complaint. But Gene Gist and Jan Davis have the solution. The two Oklahoma women have created Class Action Programs, a series of seminars designed to educate and entertain without eating a chuck of your time or a piece of your pocketbook."
Date:
June 11, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0170.0170]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jorge Pand, director Lisa Durham and Sammy Martinez, from left, play an educational game at Celebrations Educational Services."
Date:
June 12, 1990
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0708]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OSU's Steve Dailey shows his frustration after making the final out of Saturday's game."
Date:
June 9, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0137.0690]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Glen Edward Clubb, 15, of Newcastle has been awarded the Boy Scout Eagle rank."
Date:
June 12, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0143.0185]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 10, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History