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High-Temperature Superconductivity in Perspective

Description: This is the second of two OTA assessments on the subject of high-temperature superconductivity (HTS). As the title suggests, this study attempts to put HTS in perspective, both in terms of competing technologies (e.g., the more mature low-temperature superconductors), and in terms of the many technical and economic problems that must be overcome before HTS can be widely used.
Date: April 1990
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Commercializing high-temperature superconductivity

Description: Since the discovery of high-temperature superconductivity (HTS), research laboratories around the world have pushed the temperature limits steadily upward, opening the way to commercial applications with potentially revolutionary impacts. The scientific race is becoming a commercial race, one featuring U.S. and Japanese companies, and one that the United States could lose. Indeed, American firms may already be falling behind in commercializing the technology of superconductivity.
Date: June 1988
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Safeguards-by-Design: Guidance for High Temperature Gas Reactors (HTGRs) With Pebble Fuel

Description: The following is a guidance document from a series prepared for the U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA), under the Next Generation Safeguards Initiative (NGSI), to assist facility designers and operators in implementing international Safeguards-by-Design (SBD). SBD has two main objectives: (1) to avoid costly and time consuming redesign work or retrofits of new nuclear fuel cycle facilities and (2) to make the implementation of international safeguard… more
Date: August 1, 2012
Creator: Durst, Philip Casey & Schanfein, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced High-Temperature Reactor Dynamic System Model Development: April 2012 Status

Description: The Advanced High-Temperature Reactor (AHTR) is a large-output fluoride-salt-cooled high-temperature reactor (FHR). An early-phase preconceptual design of a 1500 MW(e) power plant was developed in 2011 [Refs. 1 and 2]. An updated version of this plant is shown as Fig. 1. FHRs feature low-pressure liquid fluoride salt cooling, coated-particle fuel, a high-temperature power cycle, and fully passive decay heat rejection. The AHTR is designed to be a “walk away” reactor that requires no action to p… more
Date: April 30, 2012
Creator: Qualls, A.L.; Cetiner, M.S. & Wilson, T.L., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Application of Spatially Resolved High Resolution Crystal Spectrometry to ICF Plasmas

Description: High resolution (λ/Δ#3;λ ~ 10 000) 1D imaging x-ray spectroscopy using a spherically bent crystal and a 2D hybrid pixel array detector is used world wide for Doppler measurements of ion-temperature and plasma flow-velocity profiles in magnetic confinement fusion plasmas. Meter sized plasmas are diagnosed with cm spatial resolution and 10 ms time resolution. This concept can also be used as a diagnostic of small sources, such as inertial confinement fusion plasmas and targets on x-ray light sour… more
Date: September 15, 2012
Creator: Hill, Kenneth W.; Bitter, M.; Delgado-Aprico, L.; Pablant, N. A.; Beirersdorfer, P.; Schneider, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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System Evaluation and Life-Cycle Cost Analysis of a Commercial-Scale High-Temperature Electrolysis Hydrogen Production Plant

Description: Results of a system evaluation and lifecycle cost analysis are presented for a commercial-scale high-temperature electrolysis (HTE) central hydrogen production plant. The plant design relies on grid electricity to power the electrolysis process and system components, and industrial natural gas to provide process heat. The HYSYS process analysis software was used to evaluate the reference central plant design capable of producing 50,000 kg/day of hydrogen. The HYSYS software performs mass and en… more
Date: November 1, 2012
Creator: Harvego, Edwin A.; O'Brien, James E. & McKellar, Michael G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Challenges in the Development of Advanced Reactors

Description: Past generations of nuclear reactors have been successively developed and the next generation is currently being developed, demonstrating the constant progress and technical and industrial vitality of nuclear energy. In 2000 US Department of Energy launched Generation IV International Forum (GIF) which is one of the main international frameworks for the development of future nuclear systems. The six systems that were selected were: sodium cooled fast reactor, lead cooled fast reactor, supercrit… more
Date: August 1, 2012
Creator: Sabharwall, P.; Teague, M. C.; Bragg-Sitton, S. M. & Patterson, M. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF HTS CONDUCTORS FOR ELECTRIC POWER APPLICATIONS

Description: Second generation (2G) technologies to fabricate high-performance superconducting wires developed at the Oak Ridge National Laboratory (ORNL) were transferred to American Superconductor via this CRADA. In addition, co-development of technologies for over a decade was done to enable fabrication of commercial high-temperature superconducting (HTS) wires with high performance. The massive success of this CRADA has allowed American Superconductor Corporation (AMSC) to become a global leader in the … more
Date: October 23, 2012
Creator: Goyal, A. & Rupich, M. (American Superconductor Corp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On Techniques to Characterize and Correlate Grain Size, Grain Boundary Orientation and the Strength of the SiC Layer of TRISO Coated Particles: A Preliminary Study

Description: The mechanical properties of the silicon carbide (SiC) layer of the TRi-ISOtropic (TRISO) coated particle (CP) for high temperature gas reactors (HTGR) are performance parameters that have not yet been standardized by the international HTR community. Presented in this paper are the results of characterizing coated particles to reveal the effect of annealing temperature (1000 to 2100°C) on the strength and grain size of unirradiated coated particles. This work was further expanded to include pos… more
Date: October 1, 2012
Creator: Rooyen, I.J.van; Gougar, J.L. Dunzik; Trowbridge, T. & Rooyen, Philip M van
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tritium Formation and Mitigation in High-Temperature Reactor Systems

Description: Tritium is a radiologically active isotope of hydrogen. It is formed in nuclear reactors by neutron absorption and ternary fission events and can subsequently escape into the environment. To prevent the tritium contamination of proposed reactor buildings and surrounding sites, this study examines the root causes and potential mitigation strategies for permeation of tritium (such as: materials selection, inert gas sparging, etc...). A model is presented that can be used to predict permeation rat… more
Date: March 1, 2013
Creator: Sabharwall, Piyush; Stoots, Carl & Schmutz, Hans A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tritium Formation and Mitigation in High Temperature Reactors

Description: Tritium is a radiologically active isotope of hydrogen. It is formed in nuclear reactors by neutron absorption and ternary fission events and can subsequently escape into the environment. In order to prevent the tritium contamination of proposed reactor buildings and surrounding sites, this paper examines the root causes and potential solutions for the production of this radionuclide, including materials selection and inert gas sparging. A model is presented that can be used to predict permeati… more
Date: August 1, 2012
Creator: Sabharwall, Piyush & Stoots, Carl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tritium Formation and Mitigation in High-Temperature Reactors

Description: Tritium is a radiologically active isotope of hydrogen. It is formed in nuclear reactors by neutron absorption and ternary fission events and can subsequently escape into the environment. To prevent the tritium contamination of proposed reactor buildings and surrounding sites, this study examines the root causes and potential mitigation strategies for permeation of tritium (such as: materials selection, inert gas sparging, etc...). A model is presented that can be used to predict permeation rat… more
Date: October 1, 2012
Creator: Sabharwall, Piyush & Stoots, Carl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Technical Report - 300°C Capable Electronics Platform and Temperature Sensor System For Enhanced Geothermal Systems

Description: A silicon carbide (SiC) based electronic temperature sensor prototype has been demonstrated to operate at 300°C. We showed continuous operation of 1,000 hours with SiC operational amplifier and surface mounted discreet resistors and capacitors on a ceramic circuit board. This feasibility demonstration is a major milestone in the development of high temperature electronics in general and high temperature geothermal exploration and well management tools in particular. SiC technology offers… more
Date: November 30, 2012
Creator: Chen, Cheng-Po; Shaddock, David; Sandvik, Peter; Saia, Rich; Amita Patil, Alexey Vert & Zhang, Tan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FHR Generic Design Criteria

Description: The purpose of this document is to provide an initial, focused reference to the safety characteristics of and a licensing approach for Fluoride-Salt-Cooled High-Temperature Reactors (FHRs). The document does not contain details of particular reactor designs nor does it attempt to identify or classify either design basis or beyond design basis accidents. Further, this document is an initial attempt by a small set of subject matter experts to document the safety and licensing characteristics of F… more
Date: June 15, 2012
Creator: Flanagan, G. F.; Holcomb, D. E. & Cetiner, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High Temperature Electrolysis Pressurized Experiment Design, Operation, and Results

Description: A new facility has been developed at the Idaho National Laboratory for pressurized testing of solid oxide electrolysis stacks. Pressurized operation is envisioned for large-scale hydrogen production plants, yielding higher overall efficiencies when the hydrogen product is to be delivered at elevated pressure for tank storage or pipelines. Pressurized operation also supports higher mass flow rates of the process gases with smaller components. The test stand can accommodate planar cells with dime… more
Date: September 1, 2012
Creator: O'Brien, J.E.; Zhang, X.; Housley, G.K.; DeWall, K. & Moore-McAteer, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Test Plan for Long-Term Operation of a Ten-Cell High Temperature Electrolysis Stack

Description: This document defines a test plan for a long-term (2500 Hour) test of a ten-cell high-temperature electrolysis stack to be performed at INL during FY09 under the Nuclear Hydrogen Initiative. This test was originally planned for FY08, but was removed from our work scope as a result of the severe budget cuts in the FY08 NHI Program. The purpose of this test is to evaluate stack performance degradation over a relatively long time period and to attempt to identify some of the degradation mechanisms… more
Date: July 1, 2008
Creator: O'Brien, James E.; Stoots, Carl M. & Herring, J. Stephen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of High Temperature Annealing on the Grain Characteristics of a Thin Chemical Vapor Deposition Silicon Carbide Layer.

Description: The unique combination of thermo-mechanical and physiochemical properties of silicon carbide (SiC) provides interest and opportunity for its use in nuclear applications. One of the applications of SiC is as a very thin layer in the TRi-ISOtropic (TRISO) coated fuel particles for high temperature gas reactors (HTGRs). This SiC layer, produced by chemical vapor deposition (CVD), is designed to withstand the pressures of fission and transmutation product gases in a high temperature, radiation envi… more
Date: August 1, 2013
Creator: Rooyen, Isabella J van; Rooyen, Philippus M van & Dunzik-Gougar, Mary Lou
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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