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1,769 Matching Results
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Field Demonstration of a Membrane Process to Recover Heavy Hydrocarbons and to Remove Water From Natural Gas Annual Report: 2002
The objective of this project is to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world conditions would convince industry users of the efficiency and reliability of the process. The system has been designed and fabricated by Membrane Technology and Research, Inc. (MTR) and will be installed and operated at British Petroleum (BP)-Amoco's Pascagoula, MS plant. The Gas Research Institute will partially support the field demonstration and BP-Amoco will help install the unit and provide onsite operators and utilities. The gas processed by the membrane system will meet pipeline specifications for dewpoint and Btu value and can be delivered without further treatment to the pipeline. Based on data from prior membrane module tests, the process is likely to be significantly less expensive than glycol dehydration followed by propane refrigeration, the principal competitive technology. At the end of this demonstration project the process will be ready for commercialization. The route to commercialization will be developed during this project and may involve collaboration with other companies already servicing the natural gas processing industry.
Date:
February 14, 2003
Creator:
Baker, R.; Hofmann, R. & Lokhandwala, K. A.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Thomas A. Baker to Eleanor Brown, February 12, 2003]
Letter from Lieutenant General Thomas A. Baker to Eleanor Brown, inviting her to apply for membership in the Order of Daedalians, a fraternal order of military pilots.
Date:
February 12, 2003
Creator:
Baker, Thomas A.
Object Type:
Letter
System:
The Portal to Texas History
The Fermilab data storage infrastructure
Fermilab, in collaboration with the DESY laboratory in Hamburg, Germany, has created a petabyte scale data storage infrastructure to meet the requirements of experiments to store and access large data sets. The Fermilab data storage infrastructure consists of the following major storage and data transfer components: Enstore mass storage system, DCache distributed data cache, ftp and Grid ftp for primarily external data transfers. This infrastructure provides a data throughput sufficient for transferring data from experiments' data acquisition systems. It also allows access to data in the Grid framework.
Date:
February 6, 2003
Creator:
Bakken, Jon A.; Berman, Eileen; Huang, Chih-Hao; Moibenko, Alexander; Petravick, Donald & Zalokar, Michael
Object Type:
Article
System:
The UNT Digital Library
Computational Modeling of Uranium Hydriding and Complexes
Uranium hydriding is one of the most important processes that has received considerable attention over many years. Although many experimental and modeling studies have been carried out concerning thermochemistry, diffusion kinetics and mechanisms of U-hydriding, very little is known about the electronic structure and electronic features that govern the U-hydriding process. Yet it is the electronic feature that controls the activation barrier and thus the rate of hydriding. Moreover the role of impurities and the role of the product UH{sub 3} on hydriding rating are not fully understood. An early study by Condon and Larson concerns with the kinetics of U-hydrogen system and a mathematical model for the U-hydriding process. They proposed that diffusion in the reactant phase by hydrogen before nucleation to form hydride phase and that the reaction is first order for hydriding and zero order for dehydriding. Condon has also calculated and measures the reaction rates of U-hydriding and proposed a diffusion model for the U-hydriding. This model was found to be in excellent agreement with the experimental reaction rates. From the slopes of the Arrhenius plot the activation energy was calculated as 6.35 kcal/mole. In a subsequent study Kirkpatrick formulated a close-form for approximate solution to …
Date:
February 3, 2003
Creator:
Balasubramanian, K; Siekhaus, W J & McLean, W
Object Type:
Article
System:
The UNT Digital Library
ADVANCED FLUE GAS CONDITIONING AS A RETROFIT UPGRADE TO ENHANCE PM COLLECTION FROM COAL-FIRED ELECTRIC UTILITY BOILERS
The U.S. Department of Energy and ADA Environmental Solutions are engaged in a project to develop commercial flue gas conditioning additives. The objective is to develop conditioning agents that can help improve particulate control performance of smaller or under-sized electrostatic precipitators on utility coal-fired boilers. The new chemicals will be used to control both the electrical resistivity and the adhesion or cohesivity of the fly ash. There is a need to provide cost-effective and safer alternatives to traditional flue gas conditioning with SO{sub 3} and ammonia. During this reporting quarter, two cohesivity-specific additive formulations, ADA-44C and ADA-51, were evaluated in a full-scale trial at the American Electric Power Conesville plant. Ammonia conditioning was also evaluated for comparison. ADA-51 and ammonia conditioning significantly reduced rapping and non-rapped particulate re-entrainment based on stack opacity monitor data. Based on the successful tests to date, ADA-51 will be evaluated in a long-term test.
Date:
February 1, 2003
Creator:
Baldrey, Kenneth E.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 32, No. 16, Ed. 1 Friday, February 7, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 7, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 17, Ed. 1 Friday, February 14, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 14, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 18, Ed. 1 Friday, February 21, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 21, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 19, Ed. 1 Friday, February 28, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 28, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Remediating Sellafield - A New Focus for the Site
The structure of the ownership and management of nuclear liabilities on civil sites in the United Kingdom is undergoing fundamental change. The UK Government will take responsibility for the liabilities on the UKAEA, BNFL Sellafield and Capenhurst sites and the Magnox Generation sites. When fully implemented the accountability for long term strategy will rest with the new Government Nuclear Decommissioning Authority (NDA), and contracts will be placed on M&O contractors to manage the site and implement the liabilities discharge plans. At Sellafield whilst the commercial reprocessing and MOX contracts continue, it is clear that the overall focus of the site has changed to remediation. Until the NDA is established the task of undertaking the planning is the responsibility of BNFL. To address this task the Site Remediation Team has been established. The production of the Sellafield Lifecycle Baseline Plan requires the existing long term decommissioning and waste management plans (primarily produced for provisioning purposes) together with several other specific strategies to be combined and developed into a coordinated and optimized plan for the remediation of the Sellafield Site, recognizing the ongoing reprocessing, MOX manufacture and long term fuel storage activities. An important principle within the plan is to achieve early …
Date:
February 24, 2003
Creator:
Baldwin, N. D.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Christopher Perry Nichols, February 22, 2003
Access:
Use of this item is restricted to the UNT Community
Interview with Christopher Perry Nichols, stage director, concerning his recollections of his father, the artist Perry Nichols.
Date:
February 22, 2003
Creator:
Balsley, Gerald & Nichols, Christopher P.
Object Type:
Book
System:
The UNT Digital Library
Oral History Interview with Donald Stanley Vogel, February 12, 2003
Access:
Use of this item is restricted to the UNT Community
Interview with Donald Stanley Vogel, artist and art dealer, concerning his recollections concerning painter Perry Nichols. He discusses his early years as a painter after coming to Dallas from Chicago, 1942; comments about the "Dallas Nine"; building a clientele for his paintings; his relationship with John Rosenfield, the arts and music critic for the Dallas Morning News; his business partnership with Betty McLean in the Betty McLean Art Gallery, 1951-54; his criticism of Nichols's work habits; comments about Nichols's personal life; his role in Nichols's mural painted for the Belo Corporation; his critique of the Belo mural; the importance of self-discipline to the successful artist.
Date:
February 12, 2003
Creator:
Balsley, Gerald & Vogel, Donald S., 1917-2004
Object Type:
Book
System:
The UNT Digital Library
Strategic Petroleum Reserve
None
Date:
February 14, 2003
Creator:
Bamberger, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Final Disposal of Radioactive Waste in Germany: Plan Approval Process of Konrad Mine and Acceptance Requirements
Currently no final repository for any type of radioactive waste is operated in Germany. Preliminary Final Storage Acceptance Requirements for radioactive waste packages were published in 1995. Up to now these are the basis for treatment of radioactive waste in Germany. After licensing of the final repository these preliminary waste acceptance requirements are completed with licensing conditions. Some of these conditions affect the preliminary waste acceptance requirements, e. g. behavior of chemo-toxic substances in case of accidents in the final repository or the allowed maximum concentration of fissile material. The presented examples of radioactive waste conditioning campaigns demonstrate that no difficulties are expected in management, characterization and quality assurance of radioactive wastes due to the licensing conditions.
Date:
February 27, 2003
Creator:
Bandt, Gabriele; Posnatzki, Britta & Beckers, Klaus-Arno
Object Type:
Article
System:
The UNT Digital Library
An Innovative Ceramic Corrosion Protection System for Zircaloy Cladding
Light Water reactor (LWR) fuel performance is currently limited by thermal, chemical and mechanical constraints associated with the design, fabrication, and operation of the fuel in incore operation. Corrosion of the zirconium based (Zircaloy-4) alloy cladding of the fuel is a primary limiting factor. Recent success at the University of Florida in developing thin ceramic films with great adhesive properties for metal substrates offers an innovative breakthrough for eliminating a major weakness of the Zircaloy clad. ?The University of Florida proposes to coat the existing Zircaloy clad tubes with a ceramic coating for corrosion protection. An added bonus of this approach would be the implementation of a boron-containing burnable poison outer layer will also be demonstrated as part of the ceramic coating development. In this proposed effort, emphasis will be on the ceramic coating with only demonstration of feasibility on the burnable outer coating approach. This proposed program i s expected to give a step change (approximately a doubling) in clad lifetime before failure due to corrosion. In the development of ceramic coatings for Zircaloy-4 clad, silicon carbide and zirconium carbide coatings will first be applied to Zircaloy-4 coupons and cladding samples by thermal assisted chemical vapor deposition, plasma assisted …
Date:
February 19, 2003
Creator:
Baney, Ronald H.; Tulenko, James S.; Butt, D.; Demkowicz, P.; Fuchs, G.; Schoessow, G. et al.
Object Type:
Report
System:
The UNT Digital Library
Integration of health physics, safety and operational processes for management and disposition of recycled uranium wastes at the Fernald Environmental Management Project (FEMP)
Fluor Fernald, Inc. (Fluor Fernald), the contractor for the U. S. Department of Energy (DOE) Fernald Environmental Management Project (FEMP), recently submitted a new baseline plan for achieving site closure by the end of calendar year 2006. This plan was submitted at DOE's request, as the FEMP was selected as one of the sites for their accelerated closure initiative. In accordance with the accelerated baseline, the FEMP Waste Management Project (WMP) is actively evaluating innovative processes for the management and disposition of low-level uranium, fissile material, and thorium, all of which have been classified as waste. These activities are being conducted by the Low Level Waste (LLW) and Uranium Waste Disposition (UWD) projects. Alternatives associated with operational processing of individual waste streams, each of which poses potentially unique health physics, industrial hygiene and industrial hazards, are being evaluated for determination of the most cost effective and safe met hod for handling and disposition. Low-level Mixed Waste (LLMW) projects are not addressed in this paper. This paper summarizes historical uranium recycling programs and resultant trace quantity contamination of uranium waste streams with radionuclides, other than uranium. The presentation then describes how waste characterization data is reviewed for radiological and/or chemical hazards …
Date:
February 23, 2003
Creator:
Barber, James & Buckley, James
Object Type:
Article
System:
The UNT Digital Library
Nonlinear diffusion and image contour enhancement
None
Date:
February 17, 2003
Creator:
Barenblatt, G.I. & Vazquez, J.L.
Object Type:
Article
System:
The UNT Digital Library
Advanced Underground Vehicle Power and Control: Phase 2 - Foundations of Fuelcell Power and Automated Control
None
Date:
February 21, 2003
Creator:
Barnes, David L. & Miller, Arnold R.
Object Type:
Report
System:
The UNT Digital Library
Results of Performance Evaluation Testing of Electrical Leak-Detection Methods at the Hanford Mock Tank Site--FY 2002-2003
Application of two electrical resistivity methods at the Hanford Site Mock Tank during 2002, indicate the viability of the methods as possible leak-detection tools for SST retrieval operations. Electrical Resistivity Tomography and High-Resolution Resistivity were used over a 109-day period to detect leakage of a waste simulant beneath the tank. The results of the test indicate that both of these two methods, and subset methods may be applicable to SST leak detection.
Date:
February 1, 2003
Creator:
Barnett, D. Brent; Gee, Glendon W.; Sweeney, Mark D.; Johnson, Michael D.; Medina, Victor F.; Mendoza, Donaldo P. et al.
Object Type:
Report
System:
The UNT Digital Library
The Extension of the URF HADES: Realization and Observations
An important step in the feasibility study of radioactive waste disposal in Boom Clay is the demonstration that we can construct galleries using industrial techniques, keeping the disturbance of the host-rock at an acceptable level for the long term safety of the disposal site. The successful construction of a connecting gallery of 85m in less than 6 weeks demonstrated the feasibility. To limit the disturbance, an expanding lining type was used: the wedge-block system; for the same reason, the lining was installed as soon as possible after excavation and a minimal excavation rate (2m/day) was imposed. The total radial convergence was limited to about 0.09m; the excavation radius was 2.445m. An extensive instrumentation and observation program accompanied the construction of the connecting gallery. Sensors measuring displacements, total pressure and pore water pressure were installed in the host rock to study the hydro-mechanical behavior of the clay when the gallery was excavated. Sensors in the tunneling shield gave information about the instantaneous convergence and excavation parameters. Strain gauges were placed in three sections of the lining to study the evolution of stresses in the lining with time. A systematic observation of the face and side-walls provided a useful database of the …
Date:
February 27, 2003
Creator:
Bastiaens, W & Demarche, M.
Object Type:
Article
System:
The UNT Digital Library
Safety Assessment Methodologies and Their Application in Development of Near Surface Waste Disposal Facilities--ASAM Project
Safety of near surface disposal facilities is a primary focus and objective of stakeholders involved in radioactive waste management of low and intermediate level waste and safety assessment is an important tool contributing to the evaluation and demonstration of the overall safety of these facilities. It plays significant role in different stages of development of these facilities (site characterization, design, operation, closure) and especially for those facilities for which safety assessment has not been performed or safety has not been demonstrated yet and the future has not been decided. Safety assessments also create the basis for the safety arguments presented to nuclear regulators, public and other interested parties in respect of the safety of existing facilities, the measures to upgrade existing facilities and development of new facilities. The International Atomic Energy Agency (IAEA) has initiated a number of research coordinated projects in the field of development and improvement of approaches to safety assessment and methodologies for safety assessment of near surface disposal facilities, such as NSARS (Near Surface Radioactive Waste Disposal Safety Assessment Reliability Study) and ISAM (Improvement of Safety Assessment Methodologies for Near Surface Disposal Facilities) projects. These projects were very successful and showed that there is a need …
Date:
February 25, 2003
Creator:
Batandjieva, B. & Metcalf, P.
Object Type:
Article
System:
The UNT Digital Library
Clean Cast Steel Technology, Phase IV
The objective of the Clean Cast Steel Technology Program was to improve casting product quality by removing or minimizing oxide defects and to allow the production of higher integrity castings for high speed machining lines. Previous research has concentrated on macro-inclusions that break, chip, or crack machine tool cutters and drills and cause immediate shutdown of the machining lines. The overall goal of the project is to reduce the amount of surface macro-inclusions and improve the machinability of steel castings. Macro-inclusions and improve the machinability of steel castings. Macro-inclusions have been identified by industrial sponsors as a major barrier to improving the quality and marketability of steel castings.
Date:
February 24, 2003
Creator:
Bates, Charles E.
Object Type:
Report
System:
The UNT Digital Library
DP1 and Completely Continuous Operators
This article demonstrates a relationship between the Dunford-Pettis property and the DP1 property with a similar relationship for vector-valued continuous function spaces.
Date:
February 11, 2003
Creator:
Bator, Elizabeth M. & Slavens, Dawn R.
Object Type:
Article
System:
The UNT Digital Library
Apparatus for measuring RRR
The evaluation of purity and thermal conductivity at liquid Helium temperatures of the Niobium to be used in the fabrication of superconducting RF cavities is normally done by measuring the Residual Resistivity Ratio (RRR) of a sample of the material. The relationship between the thermal and the electrical conductivity (Wiedemann-Franz Law) simplifies the task by leading to the measurement of electrical instead of thermal resistance. The RRR is the ratio between the resistances of the sample at room temperature and at the operating temperature of the cavity. A more precise definition is discussed later. The conductivity at low temperatures depends on lattice defects and impurities. Impurities are also important for cavities in a direct way as affecting the RF properties of its surface when exposed by chemical etching. The following describes the experimental apparatus for RRR measurements developed at Fermilab's Beams Division. Part 2 contains a description of the sample-holder and measurement hardware. Part 3 contains a discussion on definition, measurements and errors. Part 4 gives a step-by-step description of the measurement procedure. Finally, Part 5 gives an example of results obtained recently on a Niobium sample for CKM cavities.
Date:
February 21, 2003
Creator:
Bauer, Kuchnir Moyses and Pierre
Object Type:
Report
System:
The UNT Digital Library