1,070 Matching Results

Search Results

Nuclear Merchant Ship Reactor Shield Design Summary Report

Description: Abstract: "Most of the Nuclear Merchant Ship Reactor (NMSR) shield design work performed by The Babcock & Wilcox Company (B&W) is summarized. Primary and secondary shield results are presented, consistent with contractual requirements and designated design criteria. Methods of calculation and basic parameters are shown" (p. 1).
Date: August 1, 1959
Creator: Smith, W. R. & Turner, M. A.
Partner: UNT Libraries Government Documents Department

In Situ Tracers Project Second Quarterly Progress Report: June-August 1959

Description: The purpose of this program is to summarize and evaluate the potential usefulness of in situ tracers, design and construct prototypes of large low-level soft beta counters for industrial application, especially of such isotopes as carbon-14 and tritium, and design and construct a prototype of a large low-level liquid scintillation detector for use vi the process gamma counting.
Date: 1959
Creator: U.S. Atomic Energy Commission
Partner: UNT Libraries Government Documents Department

Handbook: A Technique for Preparing Desert Terrain Analogs

Description: "A technique is described whereby desert areas selected for terrain comparison are mapped in terms of general terrain factors, geometry factors, ground factors, and vegetation" (p. vii).
Date: May 1959
Creator: Van Lopik, Jack R. & Kolb, Charles R.
Partner: UNT Libraries Government Documents Department

Review of Soils Design, Construction, and Performance Observations: Lookout Point Dam, Oregon

Description: This report reviews the performance of the Lookout Point Dam located on the Middle Fork of the Willamette River in Oregon. "This study is one of a series of similar studies of the foundation and soil mechanics features of earth dams [...] In these studies original design data are reviewed, construction experience is summarized, and performance fo the completed structures is compared with design predictions to provide information for use in the design and construction of future similar projects" (p. 1).
Date: May 1959
Creator: Waterways Experiment Station (U.S.)
Partner: UNT Libraries Government Documents Department

1024 Channel Time-of-Flight Analyzer for MTR Fast Chopper - Operating Manual

Description: Report on the principle of measuring the time-of-flight of neutrons, magnetic-core storage of detector pulses, how pulses are stored, current generator, storage cycle generator, and cathode ray oscillograph.
Date: March 11, 1959
Creator: Petree, F. L.
Partner: UNT Libraries Government Documents Department


Description: The study deals with narrowing the range of parameters prior to preliminary design of the PM-1, a factory prepackaged, air-transportable, pressurized water nuclear power plant. The plant is to produce 1000 kw of net electrical power and 7 x 10/sup 6/ Btu/hr of space heat that is suitable for use with a central heating system. The data and conclusions resulting from the parametric study will provide the basis for the preliminary design of the PM-1 power plant. (W.D.M.)
Date: September 1, 1959
Creator: Sieg, J.S.
Partner: UNT Libraries Government Documents Department


Description: Absorption spectrophotometric methods were used in a study of complex ion formation and acid-base reactions in fused chloride and nitrate systems. Several methods for the treatment of spectrophotometric data were investigated. The spectra of various chromium salts were determined in three nitrate melts and in fused lithium chloride-pothssium chloride. In low solute concentrations in LiNO/sub 3/-KNO/sub 3/, NaNC/sub 3/-KNO/sub 3/, and LiCl-KCl melts, the species found was the chromate ion, while in molten AgNO/sub 3/, the species found was the dichromate ion. An explanation of these observations is put forward, and their significance discussed. Formation constants for leadchloro and lead-bromo complexes were evaluated. The values obtained for the first two lead-chloro and leadbromo complexes are 11.3, 3.6 and 13.3 and 6.0, respectively. Mass spectral studies of the gaseous products of the reaction between dichromate ion and nitrate ion in fused NaNO/sub 3/-KNO/sub 3/ showed that the reaction is of an acidbase type, involving formation of a nitronium ion which then reacts with nitrate ion to evolve dinitrogen pentoxide decomposition products. A number of qualitative experiments in fused salts involving acid-base reactions were performed, and their relation to oxidation-reduction processes in the fused salts is discussed. An analogy is drawn to a similar relation in aqueous solution. (auth)
Date: September 17, 1959
Creator: Osteryoung, R.A.; VanNorman, J.D. & Christie, J.H.
Partner: UNT Libraries Government Documents Department


Description: Waste disposal in underground salt cavities is considered. Theoretical Investigations for spherical and cylindrical cavities included analysis of elastic stress, thermal stress, and stress redistribution due to the development of a plastic zone around the cavity. The problems of temperature distribution and accompanying thermal stress, due to heat emission from the waste, were also studied. The reduction of the cavity volume, the development of the plastic zone, and the resulting stress redistribution around the cavity are presented as functions of cavity depth, internal pressure of cavity, strenzth of salt, and cavity teraperature rise. It is shown that a salt cavity can be designed such that it is structurally stable as a storage container assuming a chemical equilibrium can be established between the liquid waste and salt. (W.D.M.)
Date: January 1, 1959
Creator: Serata, S. & Gloyna, E.F.
Partner: UNT Libraries Government Documents Department


Description: At the end of November, 20% of the construction and 80% of the firm design of the Heavy Water Components Test Reactor (HWCTR) were complete. Proof testing of various seals and mechanisms for the HWCTR continued satisfatorily. Further analyses are given of the transient behavior of the HWCTR isolated coolant loops and of the experimental data on the nuclear effects of hot moderator. The results of additional fabrication and irradiation tests of uranium metal and uranium oxide are recorded. The manufacture of tubular metallurgical joints between Zircaloy and stainless steel is also reported. (See also DP-415.) (auth)
Date: December 1, 1959
Creator: Hood, R.R. & Isakoff, L. comps.
Partner: UNT Libraries Government Documents Department

Preparation of Uranium-Niobium Alloys by Bomb Reduction; PREPARATION D'ALLIAGES URANIUM-NIOBIUM PAR REDUCTION EN BOMBE

Description: Uranium--niobium alloys were prepared by direct reduction with calcium of urardum tetrafluoride and niobium pentoxide. The reduction of potassium oxyfluoniobate did not give satisfactory results. Alloys containing up to 20% niobium have been successfully achieved. Ternary alloys containing chromium and vanadium have been prepared by simultaneous reduction of chromium anhydride and vanadium pentoxide. The preparation of the alloys is described and the results are discussed. (auth)
Date: March 13, 1959
Creator: Huet, J.J. & Massaux, H.
Partner: UNT Libraries Government Documents Department

Microbarograph Evaluation Report

Description: From introduction: This report describes the procedures used and the results obtained in evaluating the Wiancko type 3-PBM-2 microbarograph system.
Date: September 3, 1959
Partner: UNT Libraries Government Documents Department

Experimental Pressure Distributions and Force Coefficients on Block Forms for Varying Mach Number, Reynolds Number, and Yaw Angle

Description: Abstact: "Wind tunnel tests were performed to determine pressure distributions and normal force coefficients on three block forms on mounting planes. The dimension ratios of the blocks were 1:1:1, 1:1:2, and 1:1:4. Results are given for variation in Mach number from 0.066 to 0.8, in Reynolds number from 0.28 x 10(exp 6) to 4 x 10(exp 6), and in yaw angle from 0 to 90 degrees. Results show a Reynolds number independence over the range examined. Windward face force coefficients for a given block form are approximately proportional to the ratio of impact to dynamic pressure. Pressure distribution and resultant coefficients are affected by mounting planes."
Date: January 1959
Creator: Hankins, Dorris M.
Partner: UNT Libraries Government Documents Department

An Exploding Wire as a Fuse for the LASL Capacitor Bank--Zeus

Description: Abstract: "An exploding copper wire, one millimeter in diameter, 30 centimeters long, has been developed as a fuse component for a Los Alamos capacitor energy source to be employed in controlled thermonuclear research studies. The fuse allows the passage of the high normal duty "action" (13,700 ampere-coulombs per capacitor) at a 20-second repetition rate. However, it interrupts the circuit to a shorted capacitor in 12 microseconds, thereby protecting the faulted capacitor from explosive energy consumption. The initial phase of the development included observations of various metals (copper, silver, iron, and nickel) as well as various configurations (straight wires, helixes, foils, and tubes). Direct scaling of previous small exploding wire studies at Sandia Corporation was demonstrated with scaling factors up to 700,000."
Date: June 4, 1959
Creator: Cnare, Eugene C.
Partner: UNT Libraries Government Documents Department

Experimental Determination of the Pressure Drop Through a Pebble Bed

Description: Abstract: "The pressure drop associated with the flow of air through a cylindrical bed of spherical pebbles has been investigated experimentally. The results of this investigation are reported here."
Date: September 1959
Creator: Randall, D. E. & Millwright, S. S.
Partner: UNT Libraries Government Documents Department

A Method of Calculating Boundary-Layer Thickness in Axisymmetric Nozzles with Laminar Hypersonic Flow

Description: Abstract: "The excellent agreement between measured boundary layer thickness and thickness calculated by Sivells and Payne recommends their method for calculating turbulent boundary layer growth in axisymmetric hypersonic nozzles. It was thought worthwhile to adapt their approach to the laminar boundary layer. This analysis, along with a limited amount of corroborating data, is presented herein."
Date: October 1959
Creator: Johnson, Arlo F.
Partner: UNT Libraries Government Documents Department


Description: Progress is reported in the following studies: carbohydrate metabolism in human erythrocytes; the development of a system of electron therapy employing a linear electron accelerator and an electromagnetic beann deflector; the capacity of progesterone to inhibit the sodium-retaining influence of aldosterone and desoxycorticosterone; use of tritium-labeled cholesterol in measuring the lability of cholesterol in human atherosclerotic plaques; the capacity of a number of steroid hormone metabelites to provoke fever in man; the failure of human placental tissue homogenates to convent progesterone to estrogens; and tracer studies on enzyme requirements for the incorporation of cytidine triphosphate into ribonucleic acid in a mammalian system. (L.H.)
Date: September 1, 1959
Creator: Jacobson, L.O. ed.
Partner: UNT Libraries Government Documents Department


Description: Program George is an IBM 704 ccde that combines standard ANPD reactor analysis methcds for computing multiplication constant and spatial distribution of flux and power, as well as other nuclear parameters, in aircraft (heterogeneous) reactors. The elapsed time and the chance for human error between initial input and final output are greatly reduced in Program George. A matched set of reflector savings for a reflected, cylindrical core, which was formerly obtained by hand, is now computed by the program. In the C/sub 2/ pcrtion of Program George, the ccde computes the neutron slowingdown density and flux at 19 lethargy levels plus a thermal group in bare, homogeneous compositions with normal mode, ene ngy-dependent bucklings. The diffusion coefficient contains a transport correction as well as a Behrens correction for heterogeneous structure. Flux-depression factors at thermal and two epithermal levels are computed in annular, cylindrical geometry by one-energy, P/sub 3/ transport theory approximation in the I/sub 2/ pontion of the program, or they may be given as input. Flux weighting of various cross sections, transmission factors, and other parameters are computed in a multigroup representation. Two-energy-group constants from the regional compositions are supplied in the F/sub 2/ portion of the program, in which a two-energy group, one-space-dimensional, multiregion diffusion calculation yields multiplication constant, normalized fission density, fast flux, and slow flux in each onedimensional reactor pontrayed. If a reactivity match is requested, the reflector savings of the specified compositions are adjusted until the multiplication constant i n the radial F/sub 2/, longitudinal F/sub 2/, and the reference bare equivalent core of a cylindrical reflected reactor converge to the same value. (auth)
Date: October 1, 1959
Creator: Hoffman, T.A. & Henderson, W.B.
Partner: UNT Libraries Government Documents Department

HEAVY WATER MODERATED POWER REACTORS. Progress Report for October 1959

Description: Continued progress is reported on the design and construction of the Heavy Water Components Test Reactor; 78% of the firm design and 17% of the construction were complete at the end of October 1959. Approximateiy 15% of the firm design for the isolated coolant loops of the HWCTR was also complete. The results of further fabrication tests and irradiation tests of fuel tubes of natural uranium metal are reported. One of the metal tubes failed under irradiation, while other irradiations of metal fuels progressed satisfactorily. (auth)
Date: November 1, 1959
Creator: Hood, R.R. & Isakoff, L. comps.
Partner: UNT Libraries Government Documents Department


Description: The thermodvnamic and transport properties of gaseous CO/sub 2/ are presented. The properties were coruputed from the most recent data. The results are presented graphically with pressure and temperature as independent variables for convenience in engineering calculations. (J.R.D.)
Date: August 10, 1959
Creator: Chen, L.H.
Partner: UNT Libraries Government Documents Department


Description: The indigo-carmine method is a simple, rapid, accurate colorimetric procedure for determining small amounts of dissolved oxygen in water (0 to 50 ppm). A solution of reduced indigo-carmine dye added to a water sample is oxidized by the presence of any dissolved oxygen and changes color. The change in color of the dye is directly proportional to the amount of dissolved oxygen present in the sample and can be determined by using a Johnson color comparator. (W.L.H.)
Date: November 1, 1959
Creator: Santoro, P.F. & Powell, A.S.
Partner: UNT Libraries Government Documents Department


Description: Activities at the Michigan Reactor and pneumatic tube system are outlined. Various modifications including installation and operation of a "bunny" rabbit pneumatic tube system for transferring samples from laboratory to counter are described. Prelimirary investigation for design of a neutron generator for activation work is described. Modifications to the 100-channel pulse-height analyzer including addition of auxillary circuits and additioral detectors are sumnnarized. In nuclear chemistry a cyclotron bombardment to produce long-lived vanadium tracer for yield determinations in activation analysis is described. Summaries of project work which have been published on absolute (d, alpha) reaction cross sections and excitation functions, use of computers in nuclear data analysis, and research on Ir/sup 196/ are presented. Study of the gamma spectra of 33-second Kr/sup 90/, 41-second Xe/sup 139/, and some longer-lived fission product rare gases is reported and a summary of preliminary results is given. Detection of a long-lived isomer of Ag/sup 108/ in old Ag/sup 110m/ samples is reported and new values for the branching ratios of 2.4minute Ag/sup 108/ are given. Activities of the Subcommittee on Radiochemistry are summarized. Development of a radiochemical procedure by the use of amalgam exchange is reported and exchange of the elements Cd, Tl, Zn, Pb, Bi, Sr, In, and Sn was demonstrated. Methods of expressing the efficiency of radiochemical separations are defined and presented tabularly. Application of activation analysis for many types of systems is reported. Data from activation analysis for trace constituents in meteorites, vanadium in petroleum process streams and in petroleum catalysts are presented. Activation analysis of niobium, rhenium, gold, and thalllum are also described. Information on personnel, published reports, and committee meetings is included. (For preceding period see AECU-3887.) (J.R.D.)
Date: November 1, 1959
Creator: Maddock, R.S. & Meinke, W.W. eds.
Partner: UNT Libraries Government Documents Department