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Development of cermets for high level radioactive waste fixation

Description: A method for the solidification and fixation of commercial and defense high-level radioactive wastes, namely a cermet process, is currently under development. Chemical and physical processing techniques, as developed up to this time, and the subsequent properties of the resulting cermet bodies are described; unique and advantageous features of the cermet waste form and the conversion process are discussed.
Date: January 1, 1979
Creator: Aaron, W S; Quinby, T C & Kobisk, E H
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Partner: UNT Libraries Government Documents Department
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Development and characterization of cermet forms for radioactive waste

Description: Cermets designed to isolate high-level wastes in a solid form are a composite consisting of various ceramic phase particles uniformly dispersed in and microencapsulated by an iron-nickel base alloy matrix. The metal matrix provides this waste form with many advantageous features including excellent thermal conductivity and mechanical strength. These cermets are formed by first dissolving the waste in molten urea, precipitating and calcining all the constituents, compacting the calcine, and sint… more
Date: January 1, 1979
Creator: Aaron, W. S.; Quinby, T. C. & Kobisk, E. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Water use alternatives for Navajo energy production

Description: The Navajo have substantial resources of coal and uranium, and water use is certain to accompany development of these resources. A variety of supplies, however, are available--water in storage in Navajo Reservoir, water in existing uses which may be transferred, and groundwater. Furthermore, the quantity of water use varies over a wide range depending on the use of water conservation technologies such as dry coolers and wastewater treatment units. Joint management of energy and water resources … more
Date: January 1, 1979
Creator: Abbey, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of Systems Studies for the STARFIRE Commercial Tokamak

Description: Extensive system and tradeoff studies were performed to support the selection process for the major parameters and design features of the STARFIRE commercial reactor. With a thermal power of 3800 MW, a neutron wall load of 3.5 MW/m/sup 2/ results in a relatively small-size reactor without imposing excessive requirements on the first-wall cooling capability, maximum toroidal-magnetic field, and frequency of structural material requirements. This moderately high-wall load requires that the first-… more
Date: January 1, 1979
Creator: Abdou, M. A.; Ehst, D. A. & Waganer, L. M.
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Partner: UNT Libraries Government Documents Department
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Shielding and Maintainability in an Experimental Tokamak

Description: This paper presents the results of an attempt to develop an understanding of the various factors involved. This work was performed as a part of the task assigned to one of the expert groups on the International Tokamak Reactor (INTOR). However, the results of this investigation are believed to be generally applicable to the broad class of the next generation of experimental tokamak facilities such as ETF. The shielding penalties for requiring personnel access are quantified. This is followed by… more
Date: January 1, 1979
Creator: Abdou, M. A.; Fuller, G.; Hager, E. R. & Vogelsang, W. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radioactive waste management at a Liquid Metal Fast Breeder Reactor

Description: This paper presents the radioactive waste production and management at a Liquid Metal Fast Breeder Reactor-II (EBR-II), which is operated for the US Department of Energy by the Argonne National Laboratory at the Idaho National Engineering Laboratory (INEL). Since this facility, in addition to supplying power has been used to demonstrate the breeder, fuel cycling, and recently operations with defective fuel elements, various categories of waste have been handled safely over some 14 years of oper… more
Date: January 1, 1979
Creator: Abrams, C. S.; Fryer, R. H. & Witbeck, L. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Re-determination and re-assessment of the thermodynamics of sublimation of uranium dioxide. [1813 to 2463/sup 0/K]

Description: The reliability of the thermodynamic data for the vaporization of UO/sub 2/ was improved by presenting precise mass spectrometric measurements of the enthalpy of sublimation ever a wide temperature range; calculation of thermodynamic functions for UO/sub 2/ from the critical assessment of available data, and analyzing the departure from molecular flow and the failure of the Knudsen effusion method at vapor pressures of UO/sub 2/ in excess of 10/sup -4/ atm.
Date: January 1, 1979
Creator: Ackermann, R. J. & Rauh, E. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High-temperature thermodynamic properties of the thorium-oxygen system. [2400 to 2655/sup 0/K]

Description: Thermodynamic properties of the Th-O system at high temperatures were investigated by means of mass effusion, mass spectrometric, and transpiration techniques over compositions ranging from the congruently vaporizing composition to the lower phase boundary composition. A very sharp decrease in O potential occurs when stoichiometric thoria is reduced but slightly from the stoichiometric composition. The small extent of reduction over a wide range of O potentials measured in the temperature range… more
Date: January 1, 1979
Creator: Ackermann, R.J. & Tetenbaum, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron dosimeter materials development and characterization

Description: In 1971, the Isotope Research Materials Laboratory (IRML) at the Oak Ridge National Laboratory (ORNL), began a neutron dosimeter development program. The main goal of the program is to produce neutron dosimeter materials for use in determining the neutron energy spectra, flux, fluence and burnup in fast reactor environments. Since 1971, many developments have been made which have reduced the fabrication cost and improved the characterization of the dosimeter materials. The IRML program, which n… more
Date: January 1, 1979
Creator: Adair, H. L.; Kobisk, E. H.; Setaro, J. A.; Quinby, T. C.; Carter, J. A.; Emery, J. F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of a Near Field Physical Model Study

Description: A physical model study is ongoing to investigate the sensitivity of recirculation and near field plume dynamics to variation in OTEC plant design and ambient ocean conditions. A thermally-stratified 18 x 12 x 0.6 m basin at a nominal scale of 1/300 allows the upper 180 m of the ocean to be studied for plant sizes up to 600 MW(e). Tests have been conducted for stagnant conditions and for conditions with a current, using both the mixed discharge (combined evaporator and condenser) and non-mixed d… more
Date: January 1, 1979
Creator: Adams, E. E.; Fry, D. J. & Coxe, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron irradiation for prevention of latch-up in MOS integrated circuits

Description: Bulk silicon integrated circuits can exhibit latch-up effects arising from regenerative switching in the parasitic bipolar transistors inherent in the complex circuit configurations. This is especially true for bulk CMOS integrated circuits in which a vertical NPN and lateral PNP connected in an SCR fashion occur. An extensive amount of work has been done in characterizing and preventing the latch-up which occurs from either transient ionizing radiation or from exceeding the breakdown voltage o… more
Date: January 1, 1979
Creator: Adams, J.R. & Sokel, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Behavior of sodium--oxide and uranium--oxide aerosols in a large vessel. [LMFBR]

Description: Results are reported for experiments on the behavior of sodium--oxide aerosols, uranium--oxide aerosols, and various mixtures of these in the Nuclear Safety Pilot Plant (NSPP) vessel at Oak Ridge. The NSPP Program, sponsored by the Nuclear Regulatory Commission, is to provide experimental qualification of the HAARM-3 aerosol behavioral code being independently developed at Battelle-Columbus Laboratories. The results from ten single-component and two mixed component aerosol experiments are prese… more
Date: January 1, 1979
Creator: Adams, R E; Kress, T S; Han, J T & Parsly, Jr, L F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Co-sputtering of aluminum--silver alloy mirrors for solar reflectors

Description: Producing films of aluminium--silver alloys of various compositions for evaluation as solar reflectors is reported. The objective is to produce a substrate coated with aluminium and silver varying in composition from one end to the other. The films are characterized metallographically and compositionally, then the reflectivity and corrosion problems are determined. (MHR)
Date: January 1, 1979
Creator: Adams, R. O.; Nordin, C. W.; Fraikor, F. J. & Masterson, K. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Description of the M1 MEQALAC and operating results

Description: MEQALAC stands for Multiple Electrostatic Quadrupole Array Linear Accelerator. The first model, M1, was designed, built, and tested in a three month period from July to October 1979. Within a week of operation a Xenon output current of 85% of the calculated space-charge limit was obtained. In the following sections, the M1 components and operation are described. Some of the design choices were made to allow hand-fabrication with available tools (principally a table-top lathe and a table-top dri… more
Date: January 1, 1979
Creator: Adams, R; Boruch, J & Bertsche, A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Natural background approach to setting radiation standards. [Proposed standard for exposure of general population to anthropogenic radiation sources is within the standard deviation of the natural background]

Description: The suggestion has often been made that an additional radiation exposure imposed on humanity as a result of some important activity such as electricity generation would be acceptable if the exposure was small compared to the natural background. In order to make this concept quantitative and objective, we propose that small compared with the natural background be interpreted as the standard deviation (weighted with the exposed population) of the natural background. This use of the variation in n… more
Date: January 1, 1979
Creator: Adler, H.I.; Federow, H. & Weinberg, A.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Factors determining the choice of the beam tube material and the vacuum chamber design for a superconducting high energy storage accelerator

Description: The factors which determine the choice of the material and the basic design for the vacuum chamber of the ISABELLE Colliding Storage Accelerator are reviewed. When the physical, thermal, electrical, and mechanical properties of the bulk material, as well as the various surface characteristics, are considered, it appears that a stainless tube covered with a copper sleeve is the best choice for the chambers in the magnet lattice of the rings. Aluminum is probably the most desirable material for t… more
Date: January 1, 1979
Creator: Aggus, J.; Edwards, D. Jr.; Halama, H.J. & Herrera, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Graphite targets for use in high intensity beams at LAMPF

Description: Graphite pion production targets are in use at the high intensity 800-MeV proton beam of the Clinton P. Anderson Meson Physics Facility (LAMPF). Radiatively cooled ATJ graphite targets have been used successfully at two target stations at proton currents of 500 ..mu..A. A water-cooled pyrolytic graphite target has been developed and put into service at the LAMPF Biomed target station at 400-..mu..A proton current. Mechanical design features and performance data are presented.
Date: January 1, 1979
Creator: Agnew, L.; Baldwin, T. S.; Grisham, D. L.; Holmberg, R. C.; Lambert, J. E.; Lindquist, L. O. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tests of SEC stability in high flux proton beams

Description: The Secondary Emission Chamber (SEC) is used to measure the beam intensity in slow extracted beam channels of proton synchrotrons around the world. With the improvements in machine intensity, these monitors have been exposed to higher flux conditions than in the past. A change in sensitivity of up to 25% has been observed in the region around the beam spot. Using SEC's of special construction, a series of tests was performed at FNAL, BNL-AGS and CERN-PS. The results of these tests and conclusio… more
Date: January 1, 1979
Creator: Agoritsas, V. & Witkover, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of methods of producing large areas of silicon sheet by the slicing of silicon ingots using inside diameter (ID) saws. First quarterly report

Description: An STC 16 inch automated ID slicing machine (Model SMA-4401) is being used for this effort. The saw has been modified to accept an STC Programmable Electric Feed System, STC Crystal Rotating System and an STC Dyna-Track Blade Monitoring and Control System. The saw and accessories will be used to slice 100 mm diameter single crystal silicon ingots while rotating them. The automated saw will automatically recover the wafers and load them into a cassette. The amount of material lost during slicing… more
Date: January 1, 1979
Creator: Aharonyan, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lasl Experience in Decontamination of the Environment

Description: Since 1972 the Los Alamos Scientific Laboratory (LASL) has been actively involved in land area surveys for radioactive contamination and has gained considerable experience in cleanup of lands considered to have unacceptable levels of radioactive contamination. Experience and means of arriving at recommendations for decontamination at levels as low as reasonably achievable.
Date: January 1, 1979
Creator: Ahlquist, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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LASL Experience in Decontamination of the Environment

Description: Since 1972 the Los Alamos Scientific Laboratory (LASL) has been actively involved in land area surveys for radioactive contamination and has gained considerable experience in cleanup of lands considered to have unacceptable levels of radioactive contamination. This paper describes our experience and means of arriving at recommendations for ALARA.
Date: January 1, 1979
Creator: Ahlquist, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Equivalent viscous damping procedure for multi-material systems

Description: The inclusion of accurate viscous damping effects in the seismic analysis of nuclear power plants is discussed. A procedure to evaluate and use equivalent viscous damping coefficients in conjunction with the substructure method of finite element analysis is outlined in detail.
Date: January 1, 1979
Creator: Ahmed, H. & Ma, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Study of structural attachments of a pool type LMFBR vessel through seismic analysis of a simplified three dimensional finite element model

Description: A simplified three dimensional finite element model of a pool type LMFBR in conjunction with the computer program ANSYS is developed and scoping results of seismic analysis are produced. Through this study various structural attachments of a pool type LMFBR like the reactor vessel skirt support, the pump support and reactor shell-support structure interfaces are studied. This study also provides some useful results on equivalent viscous damping approach and some improvements to the treatment of… more
Date: January 1, 1979
Creator: Ahmed, H. & Ma, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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