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Safety Design Strategy for the Remote Handled Low-Level Waste Disposal Project

Description: In accordance with the requirements of U.S. Department of Energy (DOE) Order 413.3A, “Program and Project Management for the Acquisition of Capital Assets,” safety must be integrated into the design process for new or major modifications to DOE Hazard Category 1, 2, and 3 nuclear facilities. The intended purpose of this requirement involves the handling of hazardous materials, both radiological and chemical, in a way that provides adequate protection to the public, workers, and the environment.… more
Date: August 1, 2012
Creator: Chirstensen, Boyd D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A first-principles density functional theory study of the electronic structural and thermodynamic properties of M2ZrO3 and M2CO3 (M=Na, K) and their capabilities for CO2 capture

Description: Alkali metal zirconates could be used as solid sorbents for CO{sub 2} capture. The structural, electronic, and phonon properties of Na{sub 2}ZrO{sub 3}, K{sub 2}ZrO{sub 3}, Na{sub 2}CO{sub 3}, and K{sub 2}CO{sub 3} are investigated by combining the density functional theory with lattice phonon dynamics. The thermodynamics of CO{sub 2} absorption/desorption reactions of these two zirconates are analyzed. The calculated results show that their optimized structures are in a good agreement with exp… more
Date: 2012
Creator: Duan, Yuhua
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Direct Solid-State Conversion of Recyclable Metals and Alloys

Description: Friction Stir Extrusion (FSE) is a novel energy-efficient solid-state material synthesis and recycling technology capable of producing large quantity of bulk nano-engineered materials with tailored, mechanical, and physical properties. The novelty of FSE is that it utilizes the frictional heating and extensive plastic deformation inherent to the process to stir, consolidate, mechanically alloy, and convert the powders, chips, and other recyclable feedstock materials directly into useable produc… more
Date: March 27, 2012
Creator: Manchiraju, Kiran
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modification of Thermal Emission via Metallic Photonic Crystals

Description: Photonic crystals are materials that are periodically structured on an optical length scale. It was previously demonstrated that the glow, or thermal emission, of tungsten photonic crystals that have a specific structure - known as the 'woodpile structure' - could be modified to reduce the amount of infrared radiation from the material. This ability has implications for improving the efficiency of thermal emission sources and for thermophotovoltaic devices. The study of this effect had been lim… more
Date: July 30, 2012
Creator: Norris, David J.; Stein, Andreas & George, Steven M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion Performance of Advanced Structural Materials in Sodium.

Description: This report gives a description of the activities in design, fabrication, construction, and assembling of a pumped sodium loop for the sodium compatibility studies on advanced structural materials. The work is the Argonne National Laboratory (ANL) portion of the effort on the work project entitled, 'Sodium Compatibility of Advanced Fast Reactor Materials,' and is a part of Advanced Materials Development within the Reactor Campaign. The objective of this project is to develop information on sodi… more
Date: May 16, 2012
Creator: Natesan, K.; Momozaki, Y.; Li, M. & Rink, D.L. (Nuclear Engineering Division)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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HIGH-DENSITY, BIO-COMPATIBLE, AND HERMETIC ELECTRICAL FEEDTHROUGHS USING EXTRUDED METAL VIAS

Description: Implanted medical devices such as pacemakers and neural prosthetics require that the electronic components that power these devices are protected from the harsh chemical and biological environment of the body. Typically, the electronics are hermetically sealed inside a bio-compatible package containing feedthroughs that transmit electrical signals, while being impermeable to particles or moisture. We present a novel approach for fabricating one of the highest densities of biocompatible hermetic… more
Date: March 29, 2012
Creator: Tooker, A; Shah, K; Tolosa, V; Sheth, H; Felix, S; Delima, T et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fusion Nuclear Science Pathways Assessment

Description: With the strong commitment of the US to the success of the ITER burning plasma mission, and the project overall, it is prudent to consider how to take the most advantage of this investment. The production of energy from fusion has been a long sought goal, and the subject of several programmatic investigations and time line proposals [1]. The nuclear aspects of fusion research have largely been avoided experimentally for practical reasons, resulting in a strong emphasis on plasma science. Meanwh… more
Date: February 23, 2012
Creator: C.E. Kessel, et. al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of Possible Cycle Lengths for Fully-Ceramic Micro-Encapsulated Fuel-Based Light Water Reactor Concepts

Description: The tri-isotropic (TRISO) fuel developed for High Temperature reactors is known for its extraordinary fission product retention capabilities [1]. Recently, the possibility of extending the use of TRISO particle fuel to Light Water Reactor (LWR) technology, and perhaps other reactor concepts, has received significant attention [2]. The Deep Burn project [3] currently focuses on once-through burning of transuranic fissile and fissionable isotopes (TRU) in LWRs. The fuel form for this purpose is c… more
Date: April 1, 2012
Creator: Sen, R. Sonat; Pope, Michael A.; Ougouag, Abderrafi M. & Pasamehmetoglu, Kemal O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EVALUATING THE EFFECTS OF FLY ASH EXPOSURE ON FISH EARLY LIFE STAGES: FATHEAD MINNOW EMBRYO-LARVAL TESTS

Description: On December 22, 2008, a dike containing fly ash and bottom ash in an 84-acre complex of the Tennessee Valley Authority's (TVA) Kingston Steam Plant in East Tennessee failed and released a large quantity of ash into the adjacent Emory River. Ash deposits extended as far as 4 miles upstream (Emory River mile 6) of the Plant, and some ash was carried as far downstream as Tennessee River mile 564 ({approx}4 miles downstream of the Tennessee River confluence with the Clinch River). A byproduct of co… more
Date: May 1, 2012
Creator: Greeley Jr, Mark Stephen; Elmore, Logan R & McCracken, Kitty
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar Grade Silicon from Agricultural By-products

Description: In this project, Mayaterials developed a low cost, low energy and low temperature method of purifying rice hull ash to high purity (5-6Ns) and converting it by carbothermal reduction to solar grade quality silicon (Sipv) using a self-designed and built electric arc furnace (EAF). Outside evaluation of our process by an independent engineering firm confirms that our technology greatly lowers estimated operating expenses (OPEX) to $5/kg and capital expenses (CAPEX) to $24/kg for Sipv production, … more
Date: August 20, 2012
Creator: Laine, Richard M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Extension of the Supercritical Carbon Dioxide Brayton Cycle to Low Reactor Power Operation: Investigations Using the Coupled Anl Plant Dynamics Code-sas4a/Sassys-1 Liquid Metal Reactor Code System.

Description: Significant progress has been made on the development of a control strategy for the supercritical carbon dioxide (S-CO{sub 2}) Brayton cycle enabling removal of power from an autonomous load following Sodium-Cooled Fast Reactor (SFR) down to decay heat levels such that the S-CO{sub 2} cycle can be used to cool the reactor until decay heat can be removed by the normal shutdown heat removal system or a passive decay heat removal system such as Direct Reactor Auxiliary Cooling System (DRACS) loops… more
Date: May 10, 2012
Creator: Moisseytsev, A. & Sienicki, J. J. (Nuclear Engineering Division)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Selective Inorganic membranes for Gas Separations under High Pressure Intermediate Temperature Hydrocarbonic Envrionment

Description: In this project, we have successfully developed a full scale commercially ready carbon molecular sieve (CMS) based membrane for applications in H{sub 2} recovery from refinery waste and other aggressive gas streams. Field tests at a refinery pilot plant and a coal gasification facility have successfully demonstrated its ability to recovery hydrogen from hydrotreating and raw syngas respectively. High purity H{sub 2} and excellent stability of the membrane permeance and selectivity were obtained… more
Date: June 27, 2012
Creator: Ciora, Rich & Liu, Paul K. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary Safety Design Report for Remote Handled Low-Level Waste Disposal Facility

Description: A new onsite, remote-handled low-level waste disposal facility has been identified as the highest ranked alternative for providing continued, uninterrupted remote-handled low-level waste disposal for remote-handled low-level waste from the Idaho National Laboratory and for nuclear fuel processing activities at the Naval Reactors Facility. Historically, this type of waste has been disposed of at the Radioactive Waste Management Complex. Disposal of remote-handled low-level waste in concrete disp… more
Date: March 1, 2012
Creator: Solack, Timothy & Mason, Carol
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Twelve Year Study of Underground Corrosion of Activated Metals

Description: The subsurface radioactive disposal facility located at the U.S. Department of Energy’s Idaho site contains neutron-activated metals from non-fuel nuclear-reactor-core components. A long-term corrosion study is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in an arid vadose zone environment. The study uses non-radioactive metal coupons representing the prominent neutron-activated material buried at the d… more
Date: March 1, 2012
Creator: Flitton, M. Kay Adler & Yoder, Timothy S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Efficient Theoretical Screening of Solid Sorbents for CO2 Capture Applications*

Description: By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The ab initio thermodynamic technique has the advantage of allowing identification of thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic stru… more
Date: March 31, 2012
Creator: Duan, Yuhua; Luebke, David & Pennline, Henry
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Magnetic Field Processing - A Heat-Free Heat Treating Method

Description: The High and Thermal Magnetic Processing/Electro-magnetic Acoustic Transducer (HTMP/EMAT) technology has been shown to be an enabling disruptive materials processing technology, that can achieve significant improvements in microstructure and consequently material performance beyond that achievable through conventional processing, and will lead to the next generation of advanced performance structural and functional materials. HTMP exposure increased the reaction kinetics enabling refinement of … more
Date: August 1, 2012
Creator: Ludtka, Gerard Michael; Ludtka, Gail Mackiewicz; Wilgen, John B.; Kenik, Edward A.; Parish, Chad M.; Rios, Orlando et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fabrication and Pre-irradiation Characterization of a Minor Actinide and Rare Earth Containing Fast Reactor Fuel Experiment for Irradiation in the Advanced Test Reactor

Description: The United States Department of Energy, seeks to develop and demonstrate the technologies needed to transmute the long-lived transuranic actinide isotopes contained in spent nuclear fuel into shorter lived fission products, thereby decreasing the volume of material requiring disposal and reducing the long-term radiotoxicity and heat load of high-level waste sent to a geologic repository. This transmutation of the long lived actinides plutonium, neptunium, americium and curium can be accomplishe… more
Date: June 1, 2012
Creator: Hyde, Timothy A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feasibility Study on Afr-100 Fuel Conversion From Uranium-Based Fuel to Thorium-Based Fuel

Description: Although thorium has long been considered as an alternative to uranium-based fuels, most of the reactors built to-date have been fueled with uranium-based fuel with the exception of a few reactors. The decision to use uranium-based fuels was initially made based on the technology maturity compared to thorium-based fuels. As a result of this experience, lot of knowledge and data have been accumulated for uranium-based fuels that made it the predominant nuclear fuel type for extant nuclear power.… more
Date: July 30, 2012
Creator: Heidet, F.; Kim, T. & Grandy, C. (Nuclear Engineering Division)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Safety Design Strategy for the Remote Handled Low-Level Waste Disposal Project

Description: In accordance with the requirements of U.S. Department of Energy (DOE) Order 413.3A, “Program and Project Management for the Acquisition of Capital Assets,” safety must be integrated into the design process for new or major modifications to DOE Hazard Category 1, 2, and 3 nuclear facilities. The intended purpose of this requirement involves the handling of hazardous materials, both radiological and chemical, in a way that provides adequate protection to the public, workers, and the environment.… more
Date: April 1, 2012
Creator: Chirstensen, Boyd D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Adsorption of Atmospheric Gases on Pu Surfaces

Description: Surface adsorption represents a competition between collision and scattering processes that depend on surface energy, surface structure and temperature. The surface reactivity of the actinides can add additional complexity due to radiological dissociation of the gas and electronic structure. Here we elucidate the chemical bonding of gas molecules adsorbed on Pu metal and oxide surfaces. Atmospheric gas reactions were studied at 190 and 300 K using x-ray photoelectron spectroscopy. Evolution of … more
Date: March 29, 2012
Creator: Nelson, A J; Holliday, K S; Stanford, J A; Grant, W K; Erler, R G; Allen, P G et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Rare Earth Elements in National Defense: Background, Oversight Issues, and Options for Congress

Description: Some Members of Congress have expressed concern over U.S. acquisition of rare earth materials composed of rare earth elements used in various components of defense weapon systems. On March 13, 2012, President Obama announced that the United States had joined with Japan and the European Union to bring a World Trade Organization joint dispute resolution case against China because of China's restrictive policies on rare earths and other minerals. Congress may encourage DOD to develop a collabora… more
Date: April 11, 2012
Creator: Grasso, Valerie Bailey
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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