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Corrosion of Type 202 Stainless Steel in High Temperature Water

Description: The chromium-nickel-manganese alloys are a group of austenitic stainless steels which were developed during the Korean War to conserve nickel. These alloys are very similar to their corresponding 300 Series grades in mechanical, physical and corrosion properties. A portion of the nickel in the 300 Series grades has been replaced by approximately 2% manganese for each percent of nickel replaced. Two compositions, AISI 201 and AISI 202, are recognized as standard grades. Two other compositions, A… more
Date: December 11, 1959
Creator: Larrick, A. P.
Partner: UNT Libraries Government Documents Department
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Design Studies on Cesium-137 as a Source for High Level Gamma Irradiators. Quarterly Progress Report No. 1 Covering the Period June 1 to August 31, 1959

Description: A study was made of radiation physics problems involved in the design of high-level cesium-137 gamma sources. The radiation properties of cesium-137 sources are reviewed and design and dosimetry problems are discussed. The economics, efficiency, and dose distribution for material undergoing process irradiation were calculated. A comparison of cesium-137 with cobalt-60 gamma sources indicated that in the case of irradiators specifically designed for high efficiency of useful energy conversion, t… more
Date: December 11, 1959
Creator: Voyvodic, L. & Stone, C. A.
Partner: UNT Libraries Government Documents Department
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SOLID STATE DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING AUGUST 31, 1959

Description: ; 5 8 : 5 : 8 : : 9 < 6 8 9 6 8 6 5 ; 8 6 : 4 9 > < D ; lattice atom was investigated in detail. The results are of general interest since the method used is limited only by the validity of the interatomic potential assummed. Cross sections for the displacement of lattice atoms by gamma rays up to 5 Mev were calculated. A theoretical study was made of the slowing down process for a primary displaced atom in a solid. The small amplitude motion of dislocation loops was investigated in detail, tak… more
Date: December 11, 1959
Partner: UNT Libraries Government Documents Department
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SOME EXACT RADIATION SOLUTIONS TO VLASOV'S EQUATIONS

Description: A class of exact solutions to the Vlasov equations which shows electromagnetic radiation is constructed, and a typical example discussed in some detail. Since velocities larger than c appear to be possibly of importance in these solutions, an exact radiating solution to the relativistic Vlasov equations is constructed, which, though much more specialized than the nonrelativistic solutions, shows that unphysically large velocities in the nonrelativistic solutions are not essential for the radiat… more
Date: December 11, 1959
Creator: Biedenharn, L.C.
Partner: UNT Libraries Government Documents Department
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GRAPHITE COMBUSTION HAZARD IN THE EGCR

Description: Factors influencing the possibility of a fire resulting from admission of air to the core of a high-temperature, graphite-mcderated, inert gas cooled reactor are considered. An excessive temperature rise in the core (graphite fire) may result if the rate of heat generation from internal sources exceeds the rate at which heat can be dissipated to the surroundings. Approximate calculations indicate that under several possible conditions of coolant system failure with admission of air to the core,… more
Date: November 11, 1959
Creator: Prados, J. W.
Partner: UNT Libraries Government Documents Department
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Radioactivity of Thorium and Feasibility of in Vivo Thorium Measurements

Description: Tabulations of the radioactivity in the thorium series decay chain and a discussion of the radioactivity variations possible in non-equllibrium conditions of the decay chain are presented. Experimental data indicate that the daughters of thorium within the human lung may be measured by in vivo gamma spectrometry and related to Th/sup 232/ content for thorium quantities as small as 9 mug, if the activity ratio of Th/sup 232/: Th/sup 228/ is knowu for the deposited material. Two crystel gamma coi… more
Date: November 11, 1959
Creator: Cofield, R. E.
Partner: UNT Libraries Government Documents Department
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REVIEW OF ULTRASONIC THEORY AND APPLICATION WITH REGARD TO FEASIBILITY OF OPERATION IN ORGANIC REACTORS

Description: Studies were made to determine the feasibility of utilizing ultrasonic wave energy to assist in removal of fouling film from organic reactor fuel element heat transfer surfaces. Investigations were also made to determine whether in-core installation of ultrasomc transducer would prevent film formation. (W.L.H.)
Date: November 11, 1959
Creator: Lilja, D. G.
Partner: UNT Libraries Government Documents Department
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Comparison of BEO Versus Graphite as a Moderator for MGCR

Description: The comparison is made on the basis of nuclear requirements, properties, cost, and performance under irradiation. Results of published work were reviewed on the effects of irradiation on beryllium oxide and beryllium oxide - uranium dioxide dispersions. A research proposal for a Maritime Gas-cooled Reaotor Moderator is included. (J.R.D.)
Date: September 11, 1959
Creator: Wallace, W. P. & Simnad, M. T.
Partner: UNT Libraries Government Documents Department
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Flux distributions with typical rod and loading patterns

Description: Side-to-side flux distributions calculated for ``rods out`` operation are compared to the normal equilibrium distributions. The results are highly sensitive to enrichment and flattening unbalance. Near side tube power limits are reached at total pile powers as low as 39%, and as high as 85% of the normal equilibrium. power. Calculations indicate that, with the current loading patterns, B, D, DR, F, H, and KW, theoretically could make rods out scram recoveries without exceeding tube power limits… more
Date: September 11, 1959
Creator: Bryner, J. C. & Parkos, G. R.
Partner: UNT Libraries Government Documents Department
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Study of Factors Influencing Ductility of Iron-Aluminum Alloys. Monthly Letter Report No. 5 for March 15, 1959 to March 15, 1960

Description: Order-disorder structures of Fe--Al alloys were studied and data on the Muller indices for the diffracting planes of the lattices in the random distribution of FeAl, and Fe/sub 2/Al structures are given. X-ray data for mechanical properties correlation with order-disorder transformation in alloys are tabulated listing the reflecting planes for the various super lattice structures, interplanar spacings, and Bragg angles. Also included are data on x- ray-crystal analyses as function of various he… more
Date: September 11, 1959
Creator: Rauscher, G.; Perkins, F. C. & Nachman, J. F.
Partner: UNT Libraries Government Documents Department
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Cofit - A 709 Program for Determining Extrapolation Length from Horizontal Traverse Data

Description: A program has been prepared for the 709 computer which will determine extrapolation length from horizontal traverses measurements taken in an exponential pile. The flux across the pile is assured to fit a cosine function of the form y = A cos B (X-C)
Date: August 11, 1959
Creator: Matsumoto, D. D.
Partner: UNT Libraries Government Documents Department
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Rupture Potential and Axial Power Distribution

Description: This report gives results of a study of the effect of changes in axial power distribution on rupture potential. Possible interrelationships between this effect and the effects of other reactor variables were investigated.
Date: August 11, 1959
Creator: Neef, W. I.
Partner: UNT Libraries Government Documents Department
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Transistor Driven Beam Switching Tube Decade Counter

Description: Abstract: "This paper describes an electrical readout, decade counter employing the magnetron beam switching tube with transistor drive. Double pulse resolution is one microsecond. The unit will accept a variety of transistor types and will tolerate supply voltage variations of +/- 20% at ambient temperatures up to 60 C. A "Pixie" neon indicator is driven without the use of additional transistors. A readout circuit for printer on punched paper tape is presented."
Date: August 11, 1959
Creator: Graham, Richard H.
Partner: UNT Libraries Government Documents Department
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Transistor Driven Beam Switching Tube Decade Counter

Description: An electrical readout, decade counter employing a magnetron beam switching tube with transitor drive is described. Double pulse resolution is one microsecond. The unit will accept a variety of transitor types and will tolerate supply voltage variation of plus or minus 20% at ambient temperatures up to 60 deg C. A neon indicator is driven without the use of additional transitors. A readout circuit for printer on punched paper tape is presented. (auth)
Date: August 11, 1959
Creator: Graham, R. H.
Partner: UNT Libraries Government Documents Department
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Two-Liquid-Phase Temperature Limits for the Homogeneous Reactor Fuel Solution and Its Concentrates: Comments on Solid-Liquid Equilibria

Description: Temperatures are given at which two liquid phases form in a synthetic homogeneous reactor fuel solution and its concentrates. The data show a two- liquid-phase boundary temperature of 332 deg C for the particular HRT fuel composition and a flat minimum temperature of 305 deg C for the initial solution concentrated between 6 and 16 times. Experiments on solid-liquid equilibria between 300 and 329 deg C are presented to indicatc sclution stability in this temperature region. Some related comments… more
Date: August 11, 1959
Creator: Marshall, W. L.; Gill, J. S. & Moore, R. E.
Partner: UNT Libraries Government Documents Department
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Two-Liquid-Phase Temperature Limits for the Homogeneous Reactor Fuel Solution and its Concentrates; Comments on Solid-Liquid Equilibria.

Description: Temperatures are given at which two liquid phases form in a synthetic homogeneous reactor fuel solution and its concentrates. The data show a two-liquid-phase boundary temperature of 332°C for the Particular HRT Fuel composition and a flat minimum temperature of 305°C for the initial solution concentrated between 300 and 329°C are presented to indicate solution stability in this temperature region. Some related comments on current HRT operations are given.
Date: August 11, 1959
Creator: Marshall, W. L.; Gill, J. S. & Moore, R. E.
Partner: UNT Libraries Government Documents Department
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Chemical Technology Division, Unit Operations Section Monthly Progress Report for February 1959

Description: A gamma scintillation spectrometer was used to measure diffusivity of uranyl nitrate in water during preliminary capillary experiments. During Fluorox run FBR-22, 90.4% of the theoretical amount of UF/sub 6/ formed was collected in cold traps and chemical traps. Toroid tests of flame calcined mixed Th-U oxide showed low corrosion rates, small changes in particle size and a low solubilization of uranium, while denitration of uranyl nitrate in a fluidized bed resulted in particle growth with unif… more
Date: June 11, 1959
Creator: Bresee, J. C.; Haas, P. A.; Watson, C. D.; Whatley, M. E. & Horton, R. W.
Partner: UNT Libraries Government Documents Department
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A COMPARISON OF ELEMENTARY CRITICALITY CALCULATIONS WITH EXPERIMENTAL RESULTS

Description: Several experiments have been performed at ORNL with light water solutions of uranyl nitrate (highly enriched in either U/sup 233/ or U/sup 235/) in an essentially bare sphere 27 inches in diameter. Results are presented of several calculations with elementary bare reactor theory and a discussion of the observed discrepancies between the calculated and experimental results. If the observed critical concentration is used in the calculations, the calculated effective multiplication constant is le… more
Date: June 11, 1959
Creator: Nestor, C. W. Jr.
Partner: UNT Libraries Government Documents Department
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A Comparison of Elementary Criticality Calculations with Experimental Results

Description: Several experiments have been performed at ORNL with light water solutions of uranyl nitrate (highly enriched in either U^233 or U^235) in an essentially bare sphere 27 inches in diameter. This report presents the results of several calculations with elementary bare reactor theory and a discussion of the observed discrepancies between the calculated and experimental results. If the observed critical concentration is used in the calculations, the calculated effective multiplication constant is l… more
Date: June 11, 1959
Creator: Nestor, C. W., Jr
Partner: UNT Libraries Government Documents Department
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The Effects of Temperature and Composition on the Mercury Vapor Pressure in the Uranium-Mercury System

Description: The vapor pressure of mercury is lowered by increased concentration of uranium. By dew-point measurements, the vapor pressure at 175 deg C was found to vary between 2 and 8 mm Hg, and at 375 deg C, between 300 and 1100 mm Hg, depending upon composition. Plots of the log of mercury vapor pressure as a function of the reciprocal of absolute temperature gave a family of straight lines. Each line corresponded to one of the compositions: UHg/sub 2/, UHg/sub 3/ , UHg/sub 4/, and a saturated solution … more
Date: June 11, 1959
Creator: Forsberg, H. C.
Partner: UNT Libraries Government Documents Department
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The Effects of Temperature and Composition on the Mercury Vapor Pressure in the Uranium-Mercury System

Description: The use of mercury as a solvent in the recovery of uranium from spent fuels is of the interest at Oak Ridge National Laboratory. The vapor pressure of mercury is lowered by increased concentration of uranium. By dew-point measurements, the vapor pressure at 175°C was found to very between 2 and 8mm of mercury, and at 375°C, between 300 and 1100 mm of mercury, depending upon composition as described below. Plots of the log of mercury vapor pressure vs. the reciprocal of absolute temperature gave… more
Date: June 11, 1959
Creator: Forsberg, H. C.
Partner: UNT Libraries Government Documents Department
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