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Fuel performance annual report for 1989
This annual report, the twelfth in a series, provides a brief description of fuel performance during 1989 in commercial nuclear power plants and an indication of trends. Brief summaries of fuel design changes, fuel surveillance programs, fuel operating experience, fuel problems, high-burnup fuel experience, and items of general significance are provided. References to more detailed information and related US Nuclear Regulatory Commission evaluations are included.
Date:
June 1, 1992
Creator:
Bailey, W.J.; Berting, F.M. (Pacific Northwest Lab., Richland, WA (United States)) & Wu, S. (Nuclear Regulatory Commission, Washington, DC (United States). Div. of Systems Technology)
Object Type:
Report
System:
The UNT Digital Library
The International Coal Statistics Data Base program maintenance guide
The International Coal Statistics Data Base (ICSD) is a microcomputer-based system which contains information related to international coal trade. This includes coal production, consumption, imports and exports information. The ICSD is a secondary data base, meaning that information contained therein is derived entirely from other primary sources. It uses dBase III+ and Lotus 1-2-3 to locate, report and display data. The system is used for analysis in preparing the Annual Prospects for World Coal Trade (DOE/EIA-0363) publication. The ICSD system is menu driven and also permits the user who is familiar with dBase and Lotus operations to leave the menu structure to perform independent queries. Documentation for the ICSD consists of three manuals -- the User's Guide, the Operations Manual, and the Program Maintenance Manual. This Program Maintenance Manual provides the information necessary to maintain and update the ICSD system. Two major types of program maintenance documentation are presented in this manual. The first is the source code for the dBase III+ routines and related non-dBase programs used in operating the ICSD. The second is listings of the major component database field structures. A third important consideration for dBase programming, the structure of index files, is presented in the listing …
Date:
June 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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
Magnetic fusion with high energy self-colliding ion beams
Field-reversed configurations of energetic large orbit ions with neutralizing electrons have been proposed as the basis of a fusion reactor. Vlasov equilibria consisting of a ring or an annulus have been investigated. A stability analysis has been carried out for a long thin layer of energetic ions in a low density background plasma. There is a growing body of experimental evidence from tokamaks that energetic ions slow down and diffuse in accordance with classical theory in the presence of large non-thermal fluctuations and anomalous transport of low energy (10 keV) ions. Provided that major instabilities are under control, it seems likely that the design of a reactor featuring energetic self-colliding ion beams can be based on classical theory. In this case a confinement system that is much better than a tokamak is possible. Several methods are described for creating field reversed configurations with intense neutralized ion beams.
Date:
June 1, 1992
Creator:
Rostoker, N.; Wessel, F. (California Univ., Irvine, CA (United States)); Maglich, B. (Advanced Physics Corp., Irvine, CA (United States)) & Fisher, A. (Naval Research Lab., Washington, DC (United States))
Object Type:
Article
System:
The UNT Digital Library
Control of pyrite surface chemistry in physical coal cleaning
The successful separation of pyrite from coal by flotation is dependent to a large extent upon the selectivity of the process, and the use of a pyrite depressant is one of the most important and cost-effective techniques for achieving this. This report evaluates the effects of three factors on the floatability of pyrite. These are (1) the superficial oxidation of pyrite, (2) the contamination of pyrite surfaces by carbonaceous matter, and (3) pulp redox potentials. XPS (x-ray photoelectron spectroscopy) and IR spectrometry have been used to identify surface reaction products. Microflotation, laboratory-scale conventional flotation and microbubble column flotation were used to quantify the effects of these factors. It was found that low (reducing) pulp potentials are effective depressants of pyrite (more so for fresh, unoxidized samples than for oxidized samples), whilst at the same time do not materially affect coal flotation.
Date:
June 24, 1992
Creator:
Luttrell, G. H.; Yoon, R. H. & Ou, Z. S.
Object Type:
Report
System:
The UNT Digital Library
Lattice gaugefixing and other optics in lattice gauge theory
We present results from four projects. In the first, quark and gluon propagators and effective masses and {Delta}I = 1/2 Rule operator matching coefficients are computed numerically in gaugefixed lattice QCD. In the second, the same quantities are evaluated analytically in the strong coupling, N {yields} {infinity} limit. In the third project, the Schwinger model is studied in covariant gauges, where we show that the effective electron mass varies with the gauge parameter and that longitudinal gaugefixing ambiguities affect operator product expansion coefficients (analogous to {Delta}I = 1/2 Rule matching coefficients) determined by matching gauge variant matrix elements. However, we find that matching coefficients even if shifted by the unphysical modes are {xi} invariant. In the fourth project, we show that the strong coupling parallelogram lattice Schwinger model as a different thermodynamic limit than the weak coupling continuum limit. As a function of lattice skewness angle these models span the {Delta} = {minus}1 critical line of 6-vertex models which, in turn, have been identified as c = 1 conformal field theories.
Date:
June 1, 1992
Creator:
Yee, Ken.
Object Type:
Report
System:
The UNT Digital Library
Mechanical strength and stability of lithium aluminate
Pacific Northwest Laboratory (PNL) investigated the strength and resistance to thermal shock of lithium aluminate annular pellets. The room temperature, axial compressive fracture strength of pellets made at Westinghouse Advanced Energy Systems (WAES) varied from 80 to 133 ksi. The strength at 430{degrees}C (806{degrees}F) was to 30 to 40% lower. The strength at 900{degrees}C (1652{degrees}F) showed a wide variation with one measurement near 90 ksi. These strength values are consistent with other data and predictions made in the literature when the grain size and porosity of the microstructure are taken into account. In diametral compression tests, the fracture strengths were much lower due to the existence of tensile stresses in some pellet regions from this type of loading. However, the fracture stresses were still generally higher than those reported in the literature; this fracture resistance probably reflects the better quality of the pellets tested in this study. Measurements on pellets made at PNL indicated lower strengths compared to the WAES material. This strength difference could be accounted for by different processing technologies: material made at PNL was cold-pressed and sintered with high porosity whereas the WAES material was isostatically hot-pressed with high density. Thermal shocking of the material by ramping …
Date:
June 1, 1992
Creator:
Brimhall, J.L.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of weldments in Type 21-6-9 stainless steel for Compact Ignition Tokamak structural applications: Phase 1
Primary design considerations for the Compact Ignition Tokamak toroidal field-coil cases are yield strength and toughness in the temperature range from 77 to 300 K. Type 21-6-9 stainless steel, also still known by its original Armco Steel Company trade name Nitronic 40, is the proposed alloy for this application. It has high yield strength and usually adequate base metal toughness, but weldments in thick sections have not been adequately characterized in terms of mechanical properties or hot-cracking propensity. In this study, weldability of the alloy in heavy sections and the mechanical properties of the resultant welds were investigated including tensile yield strength and Charpy V-notch toughness at 77 K and room temperature. Weldments were made in four different base metals using seven different filler metals. None of the weldments showed any indication of hot-cracking problems. All base metals, including weldment heat-affected zones, were found to have adequate strength and impact toughness at both test temperatures. Weld metals, on the other hand, except ERNiCr-3 and ENiCrFe-3 had impact toughnesses of less than 67 J at 77 K. Inconel 82 had an average weld metal impact toughness of over 135 J at 77 K, and although its strength at 77 K is …
Date:
June 1, 1991
Creator:
Alexander, D. J.; Goodwin, G. M. & Bloom, E. E.
Object Type:
Report
System:
The UNT Digital Library
Fifth in situ vitrification engineering-scale test of simulated INEL buried waste sites
In September 1990, an engineering-scale in situ vitrification (ISV) test was conducted on sealed canisters containing a combined mixture of buried waste materials expected to be present at the Idaho National Engineering Laboratory (INEL) Subsurface Disposal Area (SDA). The test was part of a Pacific Northwest Laboratory (PNL) program to assist INEL in treatability studies of the potential application of ISV to mixed transuranic wastes at the INEL SDA. The purpose of this test was to determine the effect of a close-packed layer of sealed containers on ISV processing performance. Specific objectives included determining (1) the effect of releases from sealed containers on hood plenum pressure and temperature, (2) the release pressure ad temperatures of the sealed canisters, (3) the relationships between canister depressurization and melt encapsulation, (4) the resulting glass and soil quality, (5) the potential effects of thermal transport due to a canister layer, (6) the effects on particle entrainment of differing angles of approach for the ISV melt front, and (7) the effects of these canisters on the volatilization of voltatile and semivolatile contaminants into the hood plenum.
Date:
June 1, 1992
Creator:
Bergsman, T.M.; Shade, J.W. (Pacific Northwest Lab., Richland, WA (United States)) & Farnsworth, R.K. (EG and G Idaho, Inc., Idaho Falls, ID (United States))
Object Type:
Report
System:
The UNT Digital Library
DOE Office of Civilian Radioactive Waste Management (OCRWM) system studies digest
The Department of Energy (DOE) Office of Civilian Radioactive Waste Management (OCRWM) has sponsored system studies to support the evaluation of alternative configurations and operations for the Civilian Radioactive Waste Management System (CRWMS) and the development of system requirements and design specifications. These studies are generally directed toward evaluating the impacts of alternatives to the monitored retrievable storage (MRS) and fuel rod consolidation, waste form and characteristics sequences, cask and canister concepts, allocation of waste acceptance rights, and system throughput rates. The objectives of this document are: To present major system issues and related system element issues in a structured manner; to discuss key results of major system studies and explain the basis for certain current system assumptions; to summarize the scope and results of completed system studies that are still relevant at the time this document is published; and to provide the background needed for identifying and prioritizing system issues to be resolved. Consistent with the objectives, the document does not include low-level subsystem studies addressing system element issues that do not interact with overall system issues. The document is expected to be updated as major new system studies are completed and significant new results are available.
Date:
June 1, 1992
Creator:
McLeod, N. B. (Johnson and Associates Inc., Fairfax, Virginia (United States)); Nguyen, T. D.; Drexelius, R. (USDOE Office of Civilian Radioactive Waste Management, Washington, DC (United States)) & McKee, R. W. (Pacific Northwest Lab., Richland, WA (United States))
Object Type:
Report
System:
The UNT Digital Library
Physical characterization of magmatic liquids. [Ultrasonic and Brillouin Scattering Studies of Natural and Synthetic Silicates and Oxides]
This report describes a research project that was conducted from August 15, 1985 to February 28, 1992. The project was based on the ultrasonic studies of natural and synthetic silicate melts, and the study of Brillouin scattering of synthetic silicates and oxides. Measurements of the compressional wave velocity and attenuation can be established using the ultrasonic methods. Temperature dependences of silicates can be established by the Brillouin scattering. (MB)
Date:
June 5, 1992
Creator:
Manghnani, M.H.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Jack Davis and Bill McCarter to Gene Davenport, June 19, 1992]
Photocopy of a letter from Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts, to Gene Davenport, Superintendent of Allen Independent School District. In regards to the U.S. Department of Education efforts in the arts and that Secretary Alexander has initiated the American 2000 Arts Partnership, along with the news that USOE and the National Endowment are funding the development of World Class standards for arts education. Davis and McCarter also write that they are pleased that the Getty Center for Education in the Arts has sent, to Allen's school board president, a package of materials related to enhancing student achievements through art education. Included with the packet is a questionnaire which asks for a report of any action the board has taken in response to the guide to enhancing student achievements.
Date:
June 19, 1992
Creator:
Davis, Donald Jack & McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to Pat Smith Hopper, June 27, 1994]
Photocopy of a letter from Leilani Lattin Duke, Director of the Getty Center for Education in the Arts, to Pat Smith Hopper. The letter is in regards to an education unit sent by Hopper to Duke focusing on Native American Sioux Culture developed by Hopper and Dr. Barbara Erwin. Duke appreciates the interest in Hopper sharing her work with the Center, however, the Center is not able to endorse the product. Enclosed in the letter to Hopper, Duke has added a list of regional institute directors who could be interested in the discipline-based art education and the unit on Sioux culture. List not present with letter. Bcc'd is Jack Davis.
Date:
June 27, 1994
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to Jack Davis, June 28, 1994]
Photocopy of a letter from Leilani Lattin Duke, director of the Getty Center to Jack Davis, co-director of NTIEVA, in regards to the articles from the Dallas Morning News, Davis had sent prior. Duke writes that she is pleased to see that the Dallas schools are adding seventeen more art and music teachers to their elementary schools and wonders if Dallas ISD is open to the DBAE program, discipline-based art education.
Date:
June 28, 1994
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 20]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 30]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 33]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Emerging Spirit Photograph 22]
Photograph taken at a reception for the Emerging Spirit Exhibition featuring guest artist Artis Lane, at the James E. Kemp Gallery.
Date:
June 2, 1996
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Emerging Spirit Photograph 4]
Photograph taken at a reception for the Emerging Spirit Exhibition featuring guest artist Artis Lane, at the James E. Kemp Gallery.
Date:
June 2, 1996
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Emerging Spirit Photograph 18]
Photograph taken at a reception for the Emerging Spirit Exhibition featuring guest artist Artis Lane, at the James E. Kemp Gallery.
Date:
June 2, 1996
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 17]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 2]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 12]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 10]
Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
June 16, 1995
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library