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Calculated Equilibrium Distributions for the Uranyl Nitrate - Tributyl Phosphate - Dilute Nitric Acid System for Temperatures Between 25 and 75 C

Description: Report discussing the "equilibrium uranium distribution between an aqueous nitric acid solution and a 30 per cent by volume solution of tributyl phosphate in a hydrocarbon diluent" (p. 2). This includes the necessary equations.
Date: August 12, 1960
Creator: Wilburn, N. P.
Partner: UNT Libraries Government Documents Department
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Consistent Properties of Composite Formation Under a Binary Relation

Description: In this paper we study the properties of a relation, H, between two sets, X and Y, H ⊆ X x Y. We wish to determine when the existence of H between some elements of X and Y implies the existence of H between other composite elements of X and Y. The aim is to characterize a relation by its extension or restriction to composite elements.
Date: August 12, 1969
Creator: Schwebel, John C & McCormick, Bruce H
Partner: UNT Libraries Government Documents Department
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Design criteria for coolant backup three remaining smaller reactors

Description: This document defines the objectives, bases, and functional requirements that shall govern the preparation of design of the coolant backup system for three remaining smaller reactors. This project will increase the reliability of the coolant backup facility at B Area by providing an independent last-ditch coolant system to B and C Reactors. The reliability of the last-ditch system for D Reactor will also be improved in that the present F and H leg of the export system will no longer be a part of the new export system.
Date: August 12, 1964
Creator: Brinkman, L. B.
Partner: UNT Libraries Government Documents Department
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Evaluation of Sanders Associates proposal of 6/12/63 and general comments

Description: This memorandum discusses a proposal for funding to do research on the heating of thermonuclear fuels to ignition temperatures by means of intense focused laser radiation. Technical comments are provided as to the proposal.
Date: August 12, 1963
Creator: Kidder, R. E.
Partner: UNT Libraries Government Documents Department
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Irradiation Processing Department Monthly Report: July 1960

Description: This document details activities of the irradiation processing department during the month of July, 1960. A general summary is included at the start of the report, after which the report is divided into the following sections: Research and Engineering Operations; Production and Reactor Operations; Facilities Engineering Operation; Employee Relations Operation; and Financial Operation.
Date: August 12, 1960
Partner: UNT Libraries Government Documents Department
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Microwave Impedance Measurements and Standards

Description: Report presenting a survey and discussion of well-known microwave impedance measurement techniques. The discussion includes an introduction which emphasizes basic concepts and reflection coefficient-voltage standing-wave ratio relationships. Sources of error in the various measurement techniques are discussed and methods to reduce errors are presented. Methods using rotating loops and resonance lines are included and a brief discussion of microwave impedance standards is given.
Date: August 12, 1965
Creator: Beatty, Robert W.
Partner: UNT Libraries Government Documents Department
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Preliminary design basis modifications for improved coolant backup 100-B, D, F, H, DR, and C areas

Description: The purpose of this document is to establish the design scope for the proposed modifications to the reactor ``last ditch`` cooling systems in the 100-B, D, F, H, DR, and C Areas. The objective in making these modifications is to provide adequate ``last-ditch`` reactor coolant flows for safety of operation at power levels currently programmed for the period CY 1964 when additional ``last-ditch`` cooling facilities are planned in connection with major plant modifications. Additional interim modifications may be required for the last ditch system at the 100-C and DR Areas and for the export water system prior to major plant modifications during CY 1964--1965.
Date: August 12, 1960
Creator: Schack, M. H. & Tupper, W. J.
Partner: UNT Libraries Government Documents Department
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Processing of High-Fired Uranium Dioxide Fuels by a Reduction-Mercury Extraction-Oxidation Process

Description: A preliminary flowsheet for the purification of uranium dioxide fuels by a magnesium reduction-- mercury extraction-- steam oxidation process is proposed. Feasibility was indicated by laboratory-scale scouting experiments. Data evaluation indicated 100% reduction of uranium dioxide by magnesium although this figure was not demonstrated, chiefly because of poor choice of materials and design of equipment. Steam oxidation of uranlum tetramercuride produced an oxide with an O/U ratio of 2.43. This ratio was decreased to 2.09 by heating the oxide in a hydrogen atmosphere at 900 deg C for 1 hr. The final product had a surface area of 3.5 m/sup 2//g, and 18% of the panticles were < 1 mu diam. A pellet of the oxide sintered at 1750 deg C had a density of 9.76 g/cc, 89% of theoretical. Decontamination factors demonstrated for ruthenium, cesium, and samarium, when present originally in amounts equivalent to 30,000 Mwd/ton fuel burnup and 60 days' decay, were
Date: August 12, 1960
Creator: Messing, A. F. & Dean, O. C.
Partner: UNT Libraries Government Documents Department
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Protection Against Fallout Radiation in a Simple Structure

Description: A reinforced Butler building was exposed to fallout from Shots Diablo and Shasta, and the resulting dose rates and fallout deposition inside and outside the structure were measured with various instruments and techniques. Protection factors and roof and ground contributions to the total dose rates at points within the structure were determined from the measurements. Comparisons were made with the results of theoretical and other experimental studies. Information obtained from this experiment should be of value as basic experimental data for fallout protection work, although it is recommended that additional substantive data obtained under more controlled conditions.
Date: August 12, 1963
Creator: Breslin, A. J.; Loysen, P. & Weinstein, M. S.
Partner: UNT Libraries Government Documents Department
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Stress Corrosion Cracking in Uranium-Molybdenum Alloys

Description: An investigation was conducted to determine the cause of cracking, during tension, on the surface of tensile specimens of U--Mo alloys. The cracking was observed in alloys that were water quenched from a temperature range in which the body-centered cubic gamma phase was stable and, subsequently, stressed in tension. The investigation was carried out on alloys of U--Mo containing 5 and 4 wt% Mo. It was discovered early in the study that the cracking could be eliminated by testing tensile specimens in a He atmosphere. Because of this result, tensile tests were performed in vacuum O/sub 2/2, impure N/sub 2/, and purified N/sub 2/. Additional experiments were done to establish the relation of stress state, temperature, strain rate, O/sub 2/ pressure, stress magnitude, and grain size to the cracking phenomenon. U--4 wt% Mo and U--5 wt% Mo were compared with respect to microstructure and crystal structure, since both alloys cracked during the tensile test. The origin and propagation of cracks in the microstructure were studied, using motion pictures and metallography. The results of the various experiments showed that the cracking occurred only in tension and was caused by stress-corrosion cracking due to the presence of O/sub 2/ in the atmosphere. The rate of cracking increased as the temperature was increased above 25 deg C. Below 10 deg C cracking was not observed in the U-5 wt% Mo alloy. Cracking was not associated with just one metastable phase. since it was observed in both the U-5 wt% Mo and U-4 wt% Mo alloys, which have different crystal structures when rendered metastable by water quenching from the gamma phase field. The path of fracture was transgranular and was not associated with deformation markings in the grains. (auth)
Date: August 12, 1963
Creator: Pridgeon, J. W.
Partner: UNT Libraries Government Documents Department
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Stress Corrosion Cracking in Uranium-Molybdenum Alloys

Description: Investigation conducted to determine the cause of cracking, during tension, on the surface of tensile specimens of uranium-molybdenum alloys.
Date: August 12, 1963
Creator: Pridgeon, J. W.
Partner: UNT Libraries Government Documents Department
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Thermally Activated Dislocation Motion in FCC and Refractory BCC Metals

Description: Amplitude-dependent internal friction evidence is presented which demonstrates the strong differences in dislocation mobility which exist between the two classes of cubic metals: the face-centered cubic, represented by Al and Cu, and the body-centered cubic, represented by Ta, Nb, Mo, and W. Amplitude- dependent internal friction due to dislocation motion results from the hysteretic unpinning and repinning of dislocation loops from impurity pinning points when the oscillating measuring stress exceeds the breakaway stress value. Results of experiments indicate that the modulus defect measured at 4.2 nif- K in the fcc metals is considerably larger than that associated with the Bordoni peak alone, while the modulus defect measured at 4.2 nif- K in the refractory bcc metals is quite small compared with that associated with the deformation peaks along. (H.G.G.)
Date: August 12, 1962
Creator: Chambers, R. H.
Partner: UNT Libraries Government Documents Department
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URANIUM HEXAFLUORIDE: A SURVEY OF THE PHYSICOCHEMICAL PROPERTIES

Description: >A handbook containing all available current physicochemical data on UF/ sub 5/ is presented. Every effort was made to obtain and consider all reports of original data for incorporation in the compilation. One hundred and forty nine references are given. (J.R.D.)
Date: August 12, 1960
Creator: DeWitt, R.
Partner: UNT Libraries Government Documents Department
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