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Some Metallurgical Applications of Autoradiography

Description: Macro- and high-resolution methods for autoradiography were used to investigate a number of problems concerning the distribution of uranium and other active elements in metal specimens. Illustrations are presented of the behavior of some of these materials with various henting and cooling treatments and in the presence of metals with which intermetallic phases are formed. Techniques are discussed for handling and examining autoradiographic stripping films by means of various types of metallurgi… more
Date: October 1, 1961
Creator: Adams, M. D. & Steunenberg, R. K.
Partner: UNT Libraries Government Documents Department
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RAILROAD TRANSPORTATION SHOCK AND VIBRATION TESTING

Description: A description is given of a test made to determine how successfully precision equipment can withstand transportation environments and to obtain data on this environment. (auth)
Date: January 1, 1961
Creator: Adams, P.H.
Partner: UNT Libraries Government Documents Department
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A Status Report on Reactivity Coefficients in Fast Reactors and Methods of Investigating Their Effects on Reactor Stability

Description: BS>Methods for predicting the stability of fast reactors in the presence of both positive and negative reactivity coefficients are surveyed. Experimental methods of determining reactor stability are reviewed: excursion, transient, and oscillator. Sources of reactivity coefficients are discussed for both zero power and nonzero power operation. Representative reactivity coefficient values are presented, and positive coefficients due to Doppler effect, fuel bowing, and sodium coolant expansion are… more
Date: March 1, 1961
Creator: Agresta, J.
Partner: UNT Libraries Government Documents Department
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Air blast studies with animals. Part II.

Description: Goats under Nembutal and mice were exposed in a shock tube modified to give longer-duration overpressures and equipped with ports for photography. Except for ear damage, displacement still seemed to be the major cause of injury in goats in the 4-foot section of the tube. However, it was found that mice were killed, apparently by pure blast, in a particular position in a particular type of side chamber attached to the higher-pressure, smaller-diameter, section of the tube. The relation between m… more
Date: April 1, 1961
Creator: Anderson, R. S.; Stemler, F. W. & Rogers, E. B.
Partner: UNT Libraries Government Documents Department
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THE CONTINUOUS MONITORING OF BORIC ACID CONCENTRATION BY NEUTRON ABSORPTIOMETRY

Description: A neutron absorption cell was built to monttor continuously the boric actd concentration of reactor water flowing through a purtfication loop. The instrument was calibrated over the range from 0 to 2.65 g/l with a maxtmum absolute error of 0.05 g/-l. (auth)
Date: October 1, 1961
Creator: Armani, R.J.
Partner: UNT Libraries Government Documents Department
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PHYSICS ANALYSIS OF PROPOSALS FOR EBWR CORE 2

Description: Two concepts were investigated as possibilities for the next loading of EBWR. One is a light water spiked plutonium recycle system; the second is a conventional uniformly loaded system with the option of different enrichments in two radial zones. It is concluded that the plutonium recycle scheme is not feasible in EBWR at 100 Mw, and recommendation for a two-enrichment loading for various burnups is made. (auth)
Date: April 1, 1961
Creator: Avery, R. & Kelber, C.N.
Partner: UNT Libraries Government Documents Department
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EBWR CORE 1A PHYSICS ANALYSIS

Description: The studies were primarily directed toward selection of the optimum loading for Core lA and a prediction of its properties. Included are analyses of some relevant experiments on Core 1, and prelimlnary modifications of Core 1 to Core lA. The factors which must be considered for the optimum loading determination are discussed. Four different loading pattenrs were investigated, which were considered to span the numerous possibilitles. Adequate cold shutdown was found to be almost unobtainable wit… more
Date: February 1, 1961
Creator: Avery, R.; Almenas, K.; Carson, C.; Iskenderian, H. & Kelber, C.
Partner: UNT Libraries Government Documents Department
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Conceptual Design of a Coupled Breeding Superheating Reactor, CBSR

Description: The conceptual design of the Coupled Breeding Superheating Reactor, CBSR, for achieving a positive breeding gain and for producing 65 Mw of electric power is presented. The design combines a steam-cooled fast region and a nonboiling pressurized light-water-cooled thermal region. The advantage offered by this arrangement as compared with that using a solid moderator in the thermal zone is that, if a power excursion occurs, the water will increase the void content and tend to limit the excursion.… more
Date: March 1, 1961
Creator: Avery, R.; Dewey, W. V.; Rohde, R. & Toppel, B. J.
Partner: UNT Libraries Government Documents Department
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The Performance of a Motor, a Switch, and Two Types of Pressure Pickup in a High-Gamma-Flux Environment

Description: To determine the effects of gamma radiation upon transducers, switches, and motors, two test assemblies were irradiated in the ANL Gamma Irradiation Facility at levels of 1.50 x 10/sup 5/to 2.10 x 10/sup 6/ rad/hr to a total dose of 1.0 x 10/sup 9/ rad. The components tested were a motor, a straingage pressure pickup, a quartz pressure pickup, and a high-temperature switch. The performances of the straingage pickup and snap switch were highly satisfactory over the test period. The quartz pickup… more
Date: June 1, 1961
Creator: Ayer, J. E. & Pokorny, G. J.
Partner: UNT Libraries Government Documents Department
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The Design and Construction of the Ebr-Ii Initial Fuel Loading Facility

Description: The need for the first core for EBR-11 resulted in the design and construction of the Initial Fuel Loading Facility for this reactor. The plant was built to provide the required initial loading, to train personnel, and to test prototype equipment for the remote reprocessing of fuel materials in the EBR- II Fuel Cycle Facility. The facilities include: remotely manipulated melting, casting, and pin processing equipment, a degreaser, hoods and their atmospheric control system, a gas-purification s… more
Date: June 1, 1961
Creator: Ayer, J. E. & Shuck, A. B.
Partner: UNT Libraries Government Documents Department
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Preliminary Analysis of a Steam Loop for Experimental Gas-Cooled Reactor

Description: An examination of several steam loop systems indicated that a system employing a turbine driven compressor, an open type heat exchanger, a condenser, and a pump should be selected. The comparison of the different systems was based upon the amounts of cooling heating and power required for each, the relative simplicity of the systems, and the availability, complexity, and physical size of the system's components. A steam leak will not produce a dangerous hazard, but will permit a chemical reacti… more
Date: May 1, 1961
Creator: Bailey, J. F.
Partner: UNT Libraries Government Documents Department
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HRT CORROSION SAMPLES--ADDITIONAL DATA ON SPECIMENS REMOVED PRIOR TO RUN NO. 20

Description: Results of the examinations of corrosion specimens exposed in the HRT are presented. Specimens examined include core screen samples, core specimen array No. 1, blanket specimen array No. 2, core solution line specimen arrays No. 103 and 103A, and blanket solution line specimen array No. 203. These data include corrosion rates, computed from specimen weight-changes, and results of chemical analyses of scales removed from the specimens or specimen holders. A summary is included of the HRT operati… more
Date: February 1, 1961
Creator: Baker, J.E.; Silverman, M.D.; Jenks, G.H. & Olsen, A.R.
Partner: UNT Libraries Government Documents Department
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Studies of Metal-Water Reactions at High Temperatures: I. The Condenser Discharge Experiment: Preliminary Results With Zirconium

Description: The condenser-discharge method of conducting molten metal- water reactions at high temperatures was refined. Two methods to measure energy input to specimen wires and, therefore, to compute initial metal temperatures were developed. Calculated metal temperatures were estimated to be accurate to within 100 deg C. Two reaction cells were designed, one for operation at atmospheric pressure with water at room temperature, and the other for operation at high pressure and with water at elevated tempe… more
Date: May 1, 1961
Creator: Baker, L., Jr.; Warchal, R.L.; Vogel, R.C. & Kilpatrick, M.
Partner: UNT Libraries Government Documents Department
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Data for Elementary-Particle Physics

Description: Elementary-particle data and other reference information for use in high- energy physics are presented in tables and graphs. (M.C.G.)
Date: October 1, 1961
Creator: Barkas, W. H. & Rosenfeld, A. H.
Partner: UNT Libraries Government Documents Department
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THERMODYNAMICS AND STATISTICAL MECHANICS OF A THREE-LEVEL MASER

Description: The population distribution and the associated thermodynamic properties of a three-level maser are calculated. By treating the three spin states as individual chemical species, it is possible to write the partition function, free energy, internal energy, entropy, and chemical potential for each species. The principle of minimum entropy production is used to derive an equation of reaction equilibrium. This equation is used in separate thermodynamic and statistical mechanical calculations to obta… more
Date: July 1, 1961
Creator: Barker, William A.
Partner: UNT Libraries Government Documents Department
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Development of a Variable Orifice for HNPF Fuel Channels

Description: Control of the exit temperature of the coolant from each fuel channel of the Hallam Nuclear Power Facility reactor is obtained by adjusting the coolant flow rate by a remotely operated variable orifice. Two variable orifices were designed and the hydraulic characteristics determined. Both orifice designs utilized a tapered plug moving in and out of a restricted flow passage at the upper end of the fuel channel. Data were obtained on pressure drop as a function of flow rate at different orifice … more
Date: May 1, 1961
Creator: Baroczy, C. J.; Hagel, J. A. & Leonard, W. D.
Partner: UNT Libraries Government Documents Department
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The Radiochemistry of Cobalt

Description: The radiochemistry of cobalt is discussed. Included are a review of the nuclear and chemical features of cobalt, a discussion of problems of dissolution of a sample and counting techniques, and a collection of radiochemical procedures for the element as found in the literature. (M.C.G.)
Date: January 1, 1961
Creator: Bate, L. C. & Leddicotte, G. W.
Partner: UNT Libraries Government Documents Department
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Development of Diffusion-Type Bonding Techniques for Berylco-25 Alloy

Description: Bond tensile strengths in excess of 90,000 psi in joining precipitation- hardened beryllium -copper have been obtained by diffusion techniques. Ordinary brazing techniques for beryllium--copper have resulted in an average of 40,000- psi tensile strength in the bond. Bonds with tensile strengths averaging 108,400 psi have been developed using high-vacuum, diffusion-type bonding techniques. Hardnesses averaging 38 Rockwell C'' can be obtained by air-blast cooling of the beryllium-copper after sol… more
Date: September 1, 1961
Creator: Baxter, G.R.; Hoffman, J.A.; Bertossa, R.C. & Cottrell, B.R.
Partner: UNT Libraries Government Documents Department
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RECOVERY OF Np-237 BY AN OXIDATION-REDUCTION FLUORIDE PRECIPITATION METHOD

Description: Several hundred grams of Np/sup 237/ in nitric acid solution was approximately 95% recovered as NpO/sub 2/ of >99.5% purity. The remaining 5% was recovered as a nitric acid solution of 99.95% purity. The neptunium was oxidized to the soluble +6 state with sodium bromate, and Pu(IV), thorium, and other impurities in the solution were precipitated as fluorides. The neptuninum was then reduced to Np(IV)) with sulfur dioxide and precipitated as KH/sub p/F/sub 5/ , dissolved in nitric acid, precipit… more
Date: April 1, 1961
Creator: Baybarz, R.D.
Partner: UNT Libraries Government Documents Department
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Gamma-ray scanning techniques for fast breeder reactor safety studies

Description: A radiation scanning device was constructed to observe meltdown of fast breeder reactor fuel elements in the TREAT reactor by means of self gamma emission. Although the original desired specification was to view natural uranium pins with a space resolution of 0.1 in. and a time resolution of 1 millisecond, the system was designed to give the above space resolution, but the time resolution would be 5 milliseconds or longer depending on the signal intensity. The system failed to give satisfactory… more
Date: April 1, 1961
Creator: Beach, L. A.; Pieper, A. G. & Young, M. P.
Partner: UNT Libraries Government Documents Department
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Dislocation Substructures in Deformed and Recovered Molybdenum

Description: Specimens suitable for transmission electron microscopy were prepared from bulk polycrystalline molybdenum after tensile deformation and recovery. The resulting dislocation substructures are described. Some tentative conclusions concerning the mechanism of plastic deformation in molybdenum are discussed. (auth)
Date: March 1, 1961
Creator: Benson, R.; Thomas, G. & Washburn, J.
Partner: UNT Libraries Government Documents Department
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