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Video monitoring system for enriched uranium casting furnaces

Description: A closed-circuit television (CCTV) system was developed to upgrade the remote-viewing capability on two oralloy (highly enriched uranium) casting furnaces in the Y-12 Plant. A silicon vidicon CCTV camera with a remotely controlled lens and infrared filtering was provided to yield a good-quality video presentation of the furnace crucible as the oralloy material is heated from 25 to 1300/sup 0/C. Existing tube-type CCTV monochrome monitors were replaced with solid-state monitors to increase the s… more
Date: March 1, 1978
Creator: Turner, P. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-temperature turbine technology program hot-gas path development test. Part II. Testing

Description: This topical report of the US Department of Energy High-Temperature Turbine Technology (DOE-HTTT) Phase II program presents the results of testing full-scale water-cooled first-stage and second-stage turbine nozzles at design temperature and pressure to verify that the designs are adequate for operation in a full-scale turbine environment. Low-cycle fatigue life of the nozzles was demonstrated by subjecting cascade assemblies to several hundred simulated startup/shutdown turbine cycles. This te… more
Date: March 1, 1982
Creator: Horner, M. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Oxidation/gasification of carbon residue on retorted oil shale. Final report

Description: Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rat… more
Date: January 16, 1984
Creator: Thomson, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of passive electronic components for instrumentation of improved geothermal logging tools and components. Annual progress report

Description: Short term objectives for well-logging instrumentation are circuits which can operate at temperatures in the range 275/sup 0/C to 350/sup 0/C; the medium term goal is operation up to 500/sup 0/C, and the long term goal is to achieve operation at 1000/sup 0/C. It is apparent that useful electronic circuits will require the combination of both passive components and active devices. In order to meet the compatibility requirements, the basic technology which has been selected in this project is the… more
Date: October 20, 1977
Creator: Raymond, L.S.; Hamilton, D.J. & Kerwin, W.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low strain diameter expansion of internally pressurized Zircaloy-4 tubing at high temperatures

Description: Tests of closed-end, internally pressurized, Zircaloy-4 tubing specimens were utilized to develop low strain creep characteristics as a function of time at temperatures in the range of 1475/sup 0/F to 2000/sup 0/F (802/sup 0/C to 1093/sup 0/C) and hoop stresses in the range of 250 to 2500 psi for use in loss-of-coolant accident (LOCA) analyses. The strain rate above the start of the alpha to beta phase transformation region, approximately 1490/sup 0/F (810/sup 0/C), was found to be sensitive to… more
Date: March 1978
Creator: White, L.S. & Busby, C.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-temperature of thermodynamic properties of sodium

Description: The set of high-temperature thermodynamic properties for sodium in the two-phase and subcooled-liquid regions which was previously recommended, has been modified to incorporate recent experimental data. In particular, replacement of the previously estimated critical constants with experimentally-determined values has resulted in substantial differences in the region of the critical point. The following thermodynamic properties were determined: pressure, density, enthalpy, entropy, internal ener… more
Date: January 1, 1977
Creator: Padilla, A. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Method for fabricating a seal between a ceramic and a metal alloy

Description: A method of fabricating a seal between a ceramic and an alloy comprising the steps of prefiring the alloy in an atmosphere with a very low partial pressure of oxygen, firing the assembled alloy and ceramic in air, and gradually cooling the fired assembly to avoid the formation of thermal stress in the ceramic. The method forms a bond between the alloy and the ceramic capable of withstanding the environment of a pressurized water reactor and suitable for use in an electrical conductivity sensiti… more
Date: July 24, 1981
Creator: Kelsey, P.V. Jr. & Siegel, W.T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Flash hydropyrolysis of coal. Quarterly report No. 2, April 1--June 30, 1977

Description: With the combination of low hydrogen to coal ratio, high coal feed rate and larger total quantity of coal fed, considerable liquid product is being condensed and collected. Experimental runs conducted at 750/sup 0/C and 800/sup 0/C at pressures up to 3000 psi of hydrogen show overall hydrocarbon yields and particularly gaseous hydrocarbon yields to increase with pressure to approximately 60 percent at 3000 psi. At 750/sup 0/C approximately one third (20 percent) of this yield is in the form of … more
Date: July 1, 1977
Creator: Fallon, P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High temperature recuperator tests. Final report

Description: A demonstration and test program was conducted on a high temperature, two pass ceramic tube recuperator. Data pertaining to heat exchanger performance characteristics were collected and compared with calculated values. The effect of improved heat exchanger effectiveness on system fuel consumption was demonstrated. Changes in fuel flow as a function of combustion air preheat while maintaining a given heat load were demonstrated. The effects of excess air on fuel consumption with and without syst… more
Date: May 1, 1980
Creator: Bjerklie, J. W. & Penty, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Homogenization of arc-melted uranium-6 weight percent niobium alloy ingots

Description: Microsegregation and macrosegregation in uranium-6 niobium arc-melted ingots were characterized by electron microprobe analysis. Homogenization studies determined that microsegregation can be eliminated by heat treating the alloy for six hours at 1100/sup 0/C. Extensive homogenization did not eliminate macrosegregation (banding) from the as-cast alloy, but a mathematical model describing banding and coring indicated that banding could possibly be eliminated by working prior to homogenization.
Date: January 31, 1978
Creator: Snyder, W. B., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Volatilities of ruthenium, iodine, and technetium on calcining fission product nitrate wastes

Description: Various high-level nitrate wastes were subjected to formic acid denitration. Formic acid reacts with the nitrate anion to yield noncondensable, inert gases according to the following equation: 4 HCOOH + 2 HNO/sub 3/ ..-->.. N/sub 2/O + 4 CO/sub 2/ + 5 H/sub 2/O. These gases can be scrubbed free of /sup 106/Ru, /sup 131/I, and /sup 99/Tc radioactivities prior to elimination from the plant by passage through HEPA filters. The formation of deleterious NO/sub x/ is avoided. Moreover, formic acid re… more
Date: January 1, 1980
Creator: Rimshaw, S. J. & Case, F. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modulated molecular beam mass spectrometric studies of the high temperature pyrolysis of hydrocarbons

Description: The pyrolysis products of benzene and toluene were studied as functions of temperature (up to 2000/sup 0/C) and pressure. Above 1400/sup 0/C, most of the larger species are unstable; above 1700/sup 0/C, no species heavier than C/sub 6/H/sub 6/ are observed at any pressure. Above 1500/sup 0/C and at higher pressures, the products are dominated by species containing even numbers of carbon atoms (C/sub 2/ to C/sub 12/). While polyacetylenes up to C/sub 8/H/sub 2/ were observed, they are present in… more
Date: July 1, 1979
Creator: Smith, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of ultrasonic thermometry in LMFBR safety research

Description: Ultrasonic thermometry has many potential applications in reactor safety research, where extremely high temperatures and lack of visual access may preclude the use of conventional diagnostics. An application (the in-core molten fuel pool experiment) will be described in which thoriated tungsten ultrasonic thermometers were used to measure temperatures in UO/sub 2/ to incipient melt (2860/sup 0/). Each thermometer included five sensor elements 10 mm long, providing five temperatures within the U… more
Date: January 1, 1977
Creator: Carlson, G. A.; Sullivan, W. H. & Plein, H. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ir/PuO/sub 2/ compatibility: transfer of impurities from plutonium dioxide to iridium metal during high temperature aging

Description: Plutonium oxide fuel pellets for powering radioisotopic thermoelectric generators for NASA space vehicles are encapsulated in iridium which has been grain-boundary-stabilized with thorium and aluminum. After aging for 6 months at 1310/sup 0/C under vacuum, enhanced grain growth is observed in the near-surface grains of the iridium next to the PuO/sub 2/. Examination of the grain boundaries by AES and SIMS shows a depletion of thorium and aluminum. Iron, chromium, and nickel from the fuel were f… more
Date: January 1, 1984
Creator: Taylor, D. H.; Christie, W. H. & Pavone, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the Department of Energy advanced gas turbine central power systems workshop

Description: The basic objective of the DOE Central Power Systems group is the development of technology for increasing the use of coal in central station electric power generation in an economical and environmentally acceptable manner. The two major research and development areas of this program are the Open Cycle Gas Turbine System and the Closed Cycle Gas Turbine System. Recognizing that the ultimate success of the DOE program is measured by end-user acceptance of the technology developed, the workshop w… more
Date: April 1, 1980
Creator: D'Angelo, S. (ed.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fuel systems for compact fast space reactors

Description: About 200 refractory metal clad ceramic fuel pins have been irradiated in thermal reactors under the 1200 K to 1550 K cladding temperature conditions of primary relevance to space reactors. This paper reviews performance with respect to fissile atom density, operating temperatures, fuel swelling, fission gas release, fuel-cladding compatibility, and consequences of failure. It was concluded that UO/sub 2/ and UN fuels show approximately equal performance potential and that UC fuel has lesser po… more
Date: December 1, 1983
Creator: Cox, C.M.; Dutt, D.S. & Karnesky, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Irradiation test OF-2: high-temperature irradiation behavior of LASL-made fuel rods and LASL-made coated particles. [ZrC coated particles]

Description: Three LASL-made, substoichiometric ZrC-coated particles with inert kernels, and two high-density molded graphite fuel rods that contained LASL-made, ZrC-coated fissile particles were irradiated in the Oak Ridge Research Reactor test OF-2. The severest test conditions were 8.36 x 10/sup 21/ nvt (E greater than 0.18 MeV) at 1350/sup 0/C. The graphite matrix showed no effect of the irradiation. There was no interaction between the matrix and any of the particle coats. The loose ZrC coated particle… more
Date: October 1, 1977
Creator: Wagner, P.; Reiswig, R. D.; Hollabaugh, C. M.; White, R. W.; O'Rourke, J. A.; Davidson, K. V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Apparatus for simultaneously measuring electrical conductivity and oxygen fugacity

Description: Electrical conductivity studies of silicates are useful in determining temperature vs depth in the earth. Realistic laboratory measurements of conduction mechanisms require that exact determinations of oxygen fugacity (fo{sub 2}) be made in the experimental environment. An apparatus is described that monitors system fo{sub 2} with a calcia-doped zirconia-oxygen cell while measuring electrical conductivity of iron-bearing silicates at high temperature (greater than 1000 K). The fo{sub 2} calcula… more
Date: January 31, 1978
Creator: Netherton, R. & Duba, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Adherence of Al/sub 2/O/sub 3/ to CoCrAl coatings. [1000-1200/sup 0/C]

Description: Adhesion between surface scale and protective coating is an essential requirement of a material possessing good overall oxidation resistance. Poor adhesion can lead to exfoliation of the oxide in response to thermal cycling, or mechanically applied stresses, resulting in enhanced oxidation rates. Marked improvements in scale/substrate adhesion can be obtained via the formation of protrusions of oxide growing into the substrate. These act to key the protective scale to the surface and are more e… more
Date: March 1, 1980
Creator: Whittle, D.P.; Boone, D.H. & Allam, I.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A versatile apparatus for studying irradiated fuel behavior

Description: A computer-controlled furnace system in the Alpha-Gamma Hot Cell Facility (ACHCF) at the Argonne National Laboratory in Illinois is being used to investigate the behavior of irradiated fuel materials under a variety of thermal conditions. The Fuel Behavior Test Apparatus (FBTA) is capable of accurate specimen temperature control over extended periods at temperatures up to {approximately}1000{degree}C, with short-term capability up to 1600{degree}C. The principal current use of the FBTA is to st… more
Date: September 1, 1989
Creator: Tsai, Hanchung.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HYFIRE: a tokamak/high-temperature electrolysis system

Description: The HYFIRE studies to date have investigated a number of technical approaches for using the thermal energy produced in a high-temperature Tokamak blankets to provide the electrical and thermal energy required to drive a high-temperature (>1000/sup 0/C) water electrolysis process. Current emphasis is on two design points, one consistent with electrolyzer peak inlet temperatures of approx. 1300/sup 0/C, which is an extrapolation of present experience, and one consistent with a peak electrolyzer t… more
Date: January 1, 1982
Creator: Fillo, J.A.; Powell, J.R.; Benenati, R.; Varljen, T.C.; Chi, J.W.H. & Karbowski, J.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improvement of the mechanical reliability of monolithic refractory linings for coal gasification process vessels. Final report

Description: Eighteen heat-up tests were run on nine standard and experimental dual component monolithic refractory concrete linings. These tests were run with a five foot diameter by 14-ft high Pressure Vessel/Test Furnace designed to accommodate a 12-inch thick by 5-ft high refractory lining, heat the hot face to 2000/sup 0/F and expose the lining to air or steam pressures up to 150 psig. Results obtained from standard type linings in the test facility indicated that lining degradation duplicated that obs… more
Date: September 1, 1981
Creator: Potter, R.A. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magma fuel cell. [For energy extraction from magma or for electrochemical protection of heat exchangers in magma]

Description: A high temperature, solid-electrolyte fuel cell is described which uses molten rock having oxidizable constituents as a fuel. The principles of this magma fuel cell have been successfully demonstrated and power densities of 88 W/m/sup 2/ have been achieved. If power densities can be substantially increased, the magma fuel cell may find numerous applications in magma tap projects to increase the efficiency of energy extraction from magma sources or may provide the energy necessary for the electr… more
Date: February 1, 1975
Creator: Haaland, D.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-temperature vitrification of Hanford residual-liquid waste in a continuous melter

Description: Over 270 kg of high-temperature borosilicate glass have been produced in a series of three short-term tests in the High-Temperature Ceramic Melter vitrification system at PNL. The glass produced was formulated to vitrify simulated Hanford residual-liquid waste. The tests were designed to (1) demonstrate the feasibility of utilizing high-temperature, continuous-vitrification technology for the immobilization of the residual-liquid waste, (2) test the airlift draining technique utilized by the hi… more
Date: April 1, 1980
Creator: Barnes, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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