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Magnetic Determination of Impurities in Uranium Fuel Slugs

Description: A technique has been devised for the non-destructive determination of the uranium hydride and/or iron content in uranium fuel slugs of Hanford size. The technique, an adaptation of the Gouy method for measuring magnetic susceptibilities, is based on the ferromagnetic properties of the hydride below 173 deg K. A large electromagnet and a pain balance are utilized in measuring the magnetic forces on a vertically suspended slug at liquid nitrogen temperatures and at room temperature. It was found … more
Date: June 18, 1956
Creator: Wahl, D. & Liboff, A.
Partner: UNT Libraries Government Documents Department
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Synthesis and Fabrication of Refractory Uranium Compounds. Monthly Progress Report No. 6 for January 1 Through January 31, 1960

Description: Preparation of about 1200 g of uranium nitride powder is reported. Experiments indicated that synthesis of mononitride by decomposition of higher nitrides required pro longed heating at high temperature. Chemical analysis of uranium nitride for nitrogen was found to be difficult. Data from analysis of these compounds are tabulated for comparison with calculated composition. Sintering studies of uranium mononitride continued during the report period. Work on uranium silicide formation from the e… more
Date: February 8, 1960
Creator: Taylor, K. M.; Lenie, C. A.; Doherty, P. E.; Hailey, L. N. & Keaty, T. J.
Partner: UNT Libraries Government Documents Department
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High-Frequency Titration as Applied to the Determination of Thorium, Uranium, Sulfate, and Free Acid. Parts 1-51

Description: The technique of high-frequency titrimetry was applied to the determination of thorium, uranium, sulfate, and free acid. In Part I, the reproducibility of the method for the titration of standard solutions that contained 50 rag of thorium in the absence of interferences is established. Under these conditions, the coefficient of variation of the method was <1%. In Part II, the effect of uranium on the highfrequency titration of thorium, as well as the application of the method to actual samples,… more
Date: May 11, 1959
Creator: Menis, O
Partner: UNT Libraries Government Documents Department
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The Unstable Species and the Isotope Effect in the Pyrolysis of Diborane in a Shock Tube

Description: From American Chemical Society 145th National Meeting, New York, Sept. 1963. The pyrolysis of diborane was examined using a chemical shock tube as a reactor. Additional evidence for the existence of hexaborane-12 and heptaborane- 11 and -13 was obtained. The presence of a large net normal isotope effect in the formation of tetraborane and hexaborane and a net inverse isotope effect in the formation of pentaborane-9 are observed. A mechanism, consisting of a series of competitive reactions and e… more
Date: January 1, 1963
Creator: Fehlher, T P & Koski, W S
Partner: UNT Libraries Government Documents Department
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A Discussion of the Metallurgical Aspects of Thorium as a Fuel Material

Description: Data on thorium are compiled and the use of thorium as a fuel material is discussed. It was assumed that the general reactor configuration will follow the conventional SGR-SRE reactor design of a graphite-moderated sodium-cooled metallic fuel system. Factors outlined which affect the use of thorium as a fuel material are availability of ore, capacity of processing plants, purity specifications, design and use of materials in fuel elements which may affect chemical separation economics, and tech… more
Date: November 1, 1953
Creator: Hayward, B. R.
Partner: UNT Libraries Government Documents Department
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Polyurethane Gamma Radiation Resistance. Preliminary Report, May 15, 1958- December 1, 1958

Description: Samples of two high-strength thermoplastic polyurethane Estane elastemers and one high-strength thermoset Estane elastomer were prepared and about a dozen different physical properties as well as infrared and ultraviolet absorption spectra determined for each composition. Radiation doses of 6 to 26 x 10/sup 6/ roentgens were applied to Polyurethane VC samples in air and in nitrogen environments and in a 50 micron vacuum. Infrared and ultraviolet absorption spectra changes in the polymer attendi… more
Date: December 1, 1958
Creator: Schollenberger, C. S.; Pappas, L. G.; Park, J. C.; Vickeroy, V. V. & Newton, E. B.
Partner: UNT Libraries Government Documents Department
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ARMY GAS-COOLED REACTOR SYSTEMS PROGRAM SUMMARY REPORT ON MATERIALS FOR THE GCRE-II

Description: Investigatiors were made of various materials for development of metal- canned and semi-homogeneous GCRE-II fuel element concepts. The materials were studied for application to development of fuels, grapanite, silicon-silicon carbide coatings, metal claddings, carburization barrier coatings, and graphite joining. A survey of the literature showad that uranium carbide fuels are superior to other types for the applications described and that refractory metal or metal carbide fuel coatings appear … more
Date: December 30, 1960
Creator: Carpenter, R. & Del Grosso, A.
Partner: UNT Libraries Government Documents Department
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SM-1--RESEARCH AND DEVELOPMENT QUARTERLY REPORT FOR APRIL 1 TO JUNE 30, 1960

Description: With the exception of a brief period of slightly elevated chloride level in the secondary blowdown, water-chemistry conditions during the period were satisfactory. During the period, the reactor was shut down for end-of-core-life testing and rearrangement. A set of specifications covering all electronic and electromechanical mechanisms required to control the SM-1 reactor through the rod- drive motors and clutches was prepared and issued. Installation of instrumentation for plant response and s… more
Date: September 20, 1960
Creator: Bergman, C. A.; Brown, W. S. & Hasse, R. A. et al.
Partner: UNT Libraries Government Documents Department
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THE PREPARATION OF PLUTONIUM(IV) AMMONIUM FLUORIDE AND ITS DECOMPOSITION TO PLUTONIUM TETRAFLUORIDE FOR SUBSEQUENT REDUCTION TO METAL

Description: An exothermic reaction was shown to take place between low temperature plutonium dioxide and ammonium bifluoride at 50 to 250 deg C, The reaction goes essentially to completion with the formation of the pink plutonium(IV) ammonium fluoride, This compound can be decomposed at 300 deg C and the resulting plutonium tetrafluoride dehydrated at 500 deg C. Analyses showed that plutonium tetrafluoride prepared in this manner is approximately 90% converted from the dioxide. On a twenty gram scale avera… more
Date: March 16, 1954
Creator: Tolley, W.B.
Partner: UNT Libraries Government Documents Department
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Spectrophotometric Determination of Copper in Yttrium Metal With Neocuproine

Description: The neocuproine colorimetric method was applied to the determination of copper in yttrium metal. From 5 to 80 - g of copper was determined in the presence of as much as 5OO mg of yttrium with a coefficient of variation of 2%. Copper was reduced to copper (I) with hydroxylamine and complexed with neocuproine (2,9-dimethyl-1,10-phenanthroline). The colored complex was extracted into chloroform and its absorbance measured, after dilution with ethanol, at 457 m - . (auth)
Date: April 21, 1959
Creator: White, J. C.
Partner: UNT Libraries Government Documents Department
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COMPARISON OF FEDAL MONITOR READINGS WITH RADIOCHEMICAL SAMPLE DATA. CORE I, SEED 1. Test Results T-641305

Description: Tests were conducted to compare the specific isotopic fission product activities with those of delayed neutron emitters which are monitored by the FEDAL System, and to obtain irformation on the source of activity observed in the PWR coolant. The monitors detected definite activity bursts of delayed neutrons during load increases, which indicated a rupture of the core blanket element. A radiochemical analysis of the coolant data did not show any unusual activity bursts, thus indicating a fuel el… more
Date: October 24, 1960
Partner: UNT Libraries Government Documents Department
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Radiation Chemistry of Thymine in Aqueous Alkaline Solution

Description: Gamma radiolysis of thymine solutions was investigated over a wide pH range using ultraviolet absorption spectra and two-dimensional paper chromatography combined with radioautography. The results show that as the pH is increased, the spectrum change for a given dose decreases, G(H/sub 2/O/sub 2/) increases, and G(organic peroxides) decreases. Sevrral compounds were isolated from irradiated neutral or acidic solutions of thymine, while in strongly alkaline solutions, only hydroxymethyl uracil w… more
Date: October 31, 1964
Creator: Tsukamoto, W. T.; Ward, J. F.; Julca, J. R. & Holmes, D. E.
Partner: UNT Libraries Government Documents Department
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Preliminary Studies of Scavenging Systems Related to Radioactive Fallout. Letter Report No. 8 Covering Period June 1 to August 1, 1959

Description: Progress is reported on the separation of airborne particles into size fractions for radioactive analysis. Laboratory studies of scavenging systems were conducted using a latex suspension diluted 1 to 500 parts with polystyrene then atomized with a Lauterbach generator. Tests were conducted for the collection of polystyrene particles by an evaporating water droplet. The results from these tests are included. The size distributions of particles obtained from atomizing latex and 1% gelatin suspen… more
Date: August 20, 1959
Creator: Stockham, J. & Rosinski, J.
Partner: UNT Libraries Government Documents Department
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Mound Laboratory Monthly Progress Report for February 1961

Description: A survey and re-evaluation of previous work on polyurethane and polyurethane--epoxy copolymer systems was initiated to determine which phases are more productive than others. The effects of varying excess polyol content were studied. Work was carried out to define the amounts of butamediol that the system Adiprene L-213-ferric acetyl acetonate can tolerate and still be thoroughly cured. An experimental diallyl phthalate formulation was made and tested. A survey is being made of potential source… more
Date: February 28, 1961
Creator: Eichelberger, J. F.
Partner: UNT Libraries Government Documents Department
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Summary Technical Report for the Period January 1, 1956 to March 31, 1956

Description: Studies were continued on the laberatory evaluation of Canadian gravity concentrate, processing of Th-containing U concentrates, extraction of U in a HNO/ sub 3/--TBP--UNH system, corrosion rates of stainless steel in 70% HNO/sub 3/, denitration process, corrosion resistance of chrome-plated drum dryer to raffinate solutions, UO/sub 2/F/sub 2/ reduction process, process studies in the UO/sub 3/ to UF/sub 4/ process, effects of reduction temperature and degree of hydration on reactivity of UO/su… more
Date: April 16, 1956
Creator: Simmons, J. W.
Partner: UNT Libraries Government Documents Department
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