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Nuclear Parameter Survey of Molybdenum-Uranium Alloy Fuels for the Sheldon Reactor

Description: A parameter survey was conducted on 19-rod fuel clusters using 3 and 10 wt.% Mo--U alloys. Graphs are included for the core diameter and initial conversion ratio for k/sub eff/= 1.064 as a function of moderator can size, and for the effect of the Mo resonance integral. (D. L.C.)
Date: March 28, 1958
Creator: Blaine, R. A.
Partner: UNT Libraries Government Documents Department
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Fuels Preparation Department monthly report, January 1958

Description: This report describes the operation of the fuels preparation department for the month of January, 1958. Manufacturing, employee relations, process development, plant improvements, and financial operations are described.
Date: February 28, 1958
Partner: UNT Libraries Government Documents Department
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Surface Motion from an Underground Detonation

Description: Abstract: Surface and near-surface acceleration and strain were measured on a deep underground nuclear burst (Rainier Shot; 900 ft; 1.7 kt) to permit extrapolation of results to nuclear detonations of other yields under different test or employment conditions.
Date: February 28, 1958
Creator: Swift, L. M.; Sachs, D. C.; Brenner, J. L. & Wells, W. M.
Partner: UNT Libraries Government Documents Department
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P-P Elastic and Charge-Exchange Scattering at about 120 Mev

Description: Observation of antiprotons in a propane or hydrogen bubble chamber offers the possiblity of studying several phenomena for which counter or photographic emulsion techniques are less suitable. Because there is a high ratio of pions, muons, and electrons to antiprotons in the available momentum-analyzed beams, these beams cannot be used in the bubble chamber without an initial purification, which increases the ratio of antiprotons to other particles. Such a purification has been achieved by utili… more
Date: March 28, 1958
Creator: Agnew Jr., Lewis; Elioff, Tom; Fowler, William B.; Gilly, Louis; Lander, Richard L.; Oswald, Larry et al.
Partner: UNT Libraries Government Documents Department
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INSTRUMENT TRANSMITTERS FOR HIGH-PRESSURE, AQUEOUS, NUCLEAR REACTORS

Description: A review of the criteria involved in the selection of primary sensing elements for the measurement of process variables in high-pressure, aqueous, nuclear reactors is presented. Some acceptable types of sensing elements now in use at ORNL are described. (auth)
Date: October 28, 1958
Creator: Moore, R.L.
Partner: UNT Libraries Government Documents Department
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DEPOSITION OF GAMMA-RAY HEATING IN STRATIFIED LEAD AND WATER SLABS

Description: Typical results are given from a calculation of the deposition of heat in stratified lead and water slabs caused by a monodirectional, monoenergetic beam of gamma rays incident on the slabs. A total of 512 cases were calculated for infinite slabs with finite thicknesses of 1, 2, 4, and 6 mean free paths; source energies of 1, 3, 8, and 10 Mev, and source angles of incidence which were chosen to give slant slab thicknesses of 1, 2, 3, and 4 times the normal thickness. The results were fitted to … more
Date: July 28, 1958
Creator: Bowman, L. A. & Trubey, D. K.
Partner: UNT Libraries Government Documents Department
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COMPARISON OF GASES FOR USE AS THE COOLANT IN A GAS-COOLED REACTOR

Description: The expression STAM(Pr) /sup 2/3//(M Cp)/sup 3/! which is often used to compare the merits of various gas coolants is derived and the errors involved in using this term are discussed. An example using CO/sub 2/ and He is shown to illustrate the difference between the true pumping power required and that predicted by the above expression. (auth)
Date: April 28, 1958
Creator: Samuels, G.
Partner: UNT Libraries Government Documents Department
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Progress Report No. 52 for December 1, 1957 Through February 28, 1958

Description: Some approximate values of the concentrations of the chlorine ion and the mean activity coefficients of HCl in Dowex 50, as functions of the mean activity of HCl are given. The KCl uptake by anion-exchange resins, Dowex 1 and 2, is plotted. Ion-exchange phase properties of HCl were determined from freezing point measurements. The thermodynamic acid dissociation constants of HClO/sub 4/, HCl, HNO/sub 3/, HBr, and HGaCl/sub 4/ in water-saturated bis(2- chloroethyl) ether, were obtained from coudu… more
Date: February 28, 1958
Partner: UNT Libraries Government Documents Department
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The Corrosion of Type 347 Stainless Steel in Boiling Digest Liquors

Description: Corrosion studies indicate that digest liquors presently in use at the Mallinckrodt Uranium Refining Center should not be excessively corrosive to the digesters, which are constructed of Type 347 stainless steel. Experimental tests have shown that the digest liquors resulting from some of the more recent sources of uranium concentrates might become corrosive if the fluoride, chloride, or free nitric acid contents of these liquors should reach abnormal levels. If such constituents are present, t… more
Date: January 28, 1958
Creator: Fink, F. W.; Braun, W. J. & Stewart, O. M.
Partner: UNT Libraries Government Documents Department
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PRELIMINARY DESIGN DATA FOR A CIRCULATING FLUORIDE-FUEL-HIGH FLUX REACTOR

Description: A rough calculation shows that a flux of 10/sup 16/ n/cm/sup 2/ sec can be obtained in the internal thermal column (island) of a reflector-moderated circulating fluoride-fuel reactor. Existing NaZrF/sub 5/ base fuels and a graphite moderator are used. The average power density in the reactor is 1 kw/ cc, and the total pcwer is 444 Mw. Inner radius of the fuel region is 50 cm. (auth)
Date: January 28, 1958
Creator: Ergen, W.K.
Partner: UNT Libraries Government Documents Department
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The Multigroup Diffusion Equations of Reactor Physics

Description: The partial differential equations of the multigroup diffusion model of reactor physics are shown to have solutions both in the time-independent and timedependent problems, and the usually assumed behavior of these solutions is shown to be mathematically valid. The method of spectral representation is developed for the multigroup diffusion operator. (auth)
Date: July 28, 1958
Creator: Habetler, G.J. & Martino, M.A.
Partner: UNT Libraries Government Documents Department
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Some Effects of Flow Spoilers and of Aerodynamic Balance on the Oscillating Hinge Moments for a Swept Fin-Rudder Combination in a Transonic Wind Tunnel

Description: Memorandum presenting force-oscillation tests made in the 8-foot transonic pressure tunnel to investigate some effects of an overhang-type aerodynamic balance and of a flow spoiler on the dynamic hinge-moment characteristics of a full-span flap-type rudder on a 5-percent-thick, swept vertical fin of low aspect ratio. Test results how that the aerodynamic damping moment on the plain rudder becomes unstable near a Mach number of 0.975 and remains unstable to the maximum speed of the tests.
Date: May 28, 1958
Creator: Herr, Robert W.; Gibson, Frederick W. & Osborne, Robert S.
Partner: UNT Libraries Government Documents Department
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Investigation of Lithium Hydride and Magnesium as High-Temperature Internal Coolants With Several Skin Materials

Description: Memorandum presenting an investigation of hemispherical nose shapes of titanium, stainless steel coated with aluminum oxide, and uncoated stainless steel with lithium hydride and magnesium as internal coolants. Results regarding titanium models, stainless-steel models (uncoated), stainless-steel models coated with aluminum oxide, solution effects on the decomposition temperature of lithium hydride, effect of lithium hydride and magnesium on temperature measurements, and efficiency of models coo… more
Date: May 28, 1958
Creator: Modisette, Jerry L.
Partner: UNT Libraries Government Documents Department
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A Feasibility Study of the Flare-Cylinder Configuration as a Reentry Body Shape for an Intermediate Range Ballistic Missile

Description: "A study has been made of a flare-cylinder configuration to investigate its feasibility as a reentry body of an intermediate range ballistic missile. Factors considered were heating, weight, stability, and impact velocity. A series of trajectories covering the possible range of weight-drag ratios were computed for simple truncated nose shapes of varying pointedness, and hence varying weight-drag ratios" (p. 1).
Date: May 28, 1958
Creator: Hall, James R. & Garland, Benjamine J.
Partner: UNT Libraries Government Documents Department
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Boundary-Layer-Transition Measurements in Full-Scale Flight

Description: Report presenting tests of the extent of laminar flow that can be obtained with practical wing-surface conditions. Chemical sublimation was used for boundary-layer-flow visualization on the wings of a supersonic fighter airplane in level flight. A method of continuous monitoring using heat temperature resistance gauges was also used on one wing.
Date: July 28, 1958
Creator: Banner, Richard D.; McTigue, John G. & Petty, Gilbert, Jr.
Partner: UNT Libraries Government Documents Department
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Comparison of Various Heat Exchangers for Liquid-Metal Nuclear Turbojet Over Range of Flight and Operating Conditions

Description: Memorandum presenting an analysis of a large number of liquid-metal-to-air heat-exchanger cores for the nuclear-powered liquid-metal turbojet cycle to determine which types yield the best overall net thrust per total engine weight. The performances of all exchangers considered were initially evaluated at a median condition. The performance of the best of each of the four types was compared with that of a shell-and-tube exchanger with the air flowing through the tubes, operating at the same cond… more
Date: April 28, 1958
Creator: Ragsdale, Robert G.
Partner: UNT Libraries Government Documents Department
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An Investigation of the Effect of Target Temperature on Projectile Penetration and Cratering

Description: Results regarding testing of steel projectiles fired into copper targets at velocities from 5,000 to 11,500 feet per second, which indicated that as target temperature is increased, the crater size also increases. Twenty-two caliber steel cylinders and steel spheres were used as projectiles.
Date: July 28, 1958
Creator: Kinard, William H. & Lambert, C. H., Jr.
Partner: UNT Libraries Government Documents Department
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Boundary-Layer-Transition Measurements in Full-Scale Flight

Description: Chemical sublimation has been employed for boundary-layer-flow visualization on the wings of a supersonic fighter airplane in level flight at speeds near a Mach number of 2.0. The tests have shown that laminar flow can be obtained over extensive areas of the wing with practical wing-surface conditions. In addition to the flow visualization tests, a method of continuously monitoring the conditions of the boundary layer has been applied to flight testing, using heated temperature resistance gages… more
Date: July 28, 1958
Creator: Banner, Richard D.; McTigue, John G. & Petty, Gilbert, Jr.
Partner: UNT Libraries Government Documents Department
open access

Safety Device Tests in KEWB I

Description: The feasibility of the electronic-explosive safety device was demonstrated in KEWB-I reactor excursions. It was shown to be a fast, efficient safety system for reactor protection. The safety devices inserted 1.5% negative reactivity into the core region of the KEWB-1 reactor to produce rapid shutdown. The system response time, i.e., that time interval between trip and insertion times, was found to be 4.2 msec. The complete freedom in choice of trip level and the flexibility of device geometry m… more
Date: January 28, 1958
Creator: Weeks, C. C. & Fitch, S. H.
Partner: UNT Libraries Government Documents Department
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HEAT TRANSFER TO A BOILING LIQUID MECHANISM AND CORRELATIONS. Progress Report No. 7 (58-40)

Description: Various heat transfer mechanisms which have been previously proposed are analyzed in the light of recent experiments. Evidence is presented in favor of a liquid-vapor exchange mechanism and against the widely accepted "micro-convection" mechanism. The vapor-liquid exchange rnechanism is shown to explain the insensltivity of boiling heat flux to the level of subcooling. A "Reynolds Analogy" for nucleate boiling is presented in some detail. A procedure is given for calculating the superheat at wh… more
Date: May 28, 1958
Creator: Forster, K. & Greif, R.
Partner: UNT Libraries Government Documents Department
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METALLURGICAL EXAMINATION OF VALVE TRIM FROM HRP DUMP VALVE TEST LOOP

Description: An investigation of trim from the HRP Dump Valve Test Loop revealed that performance improved with increasing poppet hardness. From this it was hypothesized that deformation of softer poppets increased the poppet-seat contact area, thus reducing the closing pressure. The deformation areas of a number of poppets were measured and the closing pressures calculated. A plot of closing pressure against leak rate showed a fair correlation and tends to support the hypothesis. (auth)
Date: May 28, 1958
Creator: Cooke, F.W.
Partner: UNT Libraries Government Documents Department
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