920 Matching Results

Search Results

Results: 1 - 24 next
open access

A Simple Formula For Computing Fission Product Thermal Cross Sections And Resonance Integrals

Description: This memorandum gives a simple formula (and the necessary constants) for computing fission product thermal cross sections and resonance integrals as a function of exposure. The simple formula was used in calculating the effective cross section and resonance integral as functions of fuel-processing cycle time in fluid-fueled reactors.
Date: April 7, 1960
Creator: Nestor, C. W.
Partner: UNT Libraries Government Documents Department
open access

5-gpm In-Pile Thorium Oxide Slurry Loop Development, Runs 14 Through 16 In Loop L-4-248, And Filtration Of Thorium Oxide Slurry With Sintered Filters

Description: In in-pile pump loop capable of circulating thorium oxide slurry while exposed to nuclear radiation in an experimental reactor beam hole is necessary to obtain information on the effect of reactor radiation on the physical and chemical properties of the slurry and on the corrosion-erosion of containment materials. Thorium oxide filtration test results with various sintered-metal filters and one aluminum oxide filter are reported.
Date: March 7, 1960
Creator: Baker, J. M.; Jones, D. T. & Savage, H. C.
Partner: UNT Libraries Government Documents Department
open access

Results of Examinations of Fused Salt Mixtures by Optical and X-Ray Diffraction Methods

Description: A summary of results of examinations of fused salt mixtures is presented. Phased analyses are derived from the two complementing techniques: measurements of optical properties using the polarizing light (petrographic) microscope, and solid phase identification using X-ray diffraction methods.
Date: October 7, 1959
Creator: Thoma, R. E.
Partner: UNT Libraries Government Documents Department
open access

Uranium Recovery From Sodium Fluoride Beds In The Volatility Pilot Plant

Description: A survey of possible methods for uranium recovery from sodium fluoride beds used in the Volatility Pilot Plant was conducted. This study included a literature survey and limited experimental work.
Date: August 7, 1959
Creator: Cross, R. A. & Whitmarsh, C. L.
Partner: UNT Libraries Government Documents Department
open access

Bibliography on Respirators

Description: A bibliography containing over 200 references to periodical and patent literature is presented.
Date: January 7, 1958
Creator: Riese, Gretchen R. & Hendrickson, Ruth M.
Partner: UNT Libraries Government Documents Department
open access

Description of the Inert Gas Supply System. Technical Memorandum No. 11

Description: Included in this description are the basic design concepts and bases for the Supply System, The Purification System, and the Design Conditions for each system. The attached flowchart shows the arrangement of the equipment and is the basis for the description. Gas supply is maintained by either a gas trailer or one of two banks of gas cylinder. All support sources have pressure-indicator-alarms to alert the operator to his gas supply conditions. The gas is purified by bubbling it thorough NaK at… more
Date: March 7, 1958
Creator: Chase, W. L.
Partner: UNT Libraries Government Documents Department
open access

Betatron Oscillations and Equilibrium Orbits in Terms of Amplitude and Phase Functions

Description: "Formulas are given to express the general particle trajectory and the equilibrium orbit for a slightly disturbed synchrotron in terms of the amplitude and phase functions for the ideal machine. If these functions are known, orbit computations can be carried out by simple integration procedures. The formalism is expected to be useful especially for considerations such as beam alignment or generation of an external electron beam. Some equations given earlier are repeated for completeness."
Date: January 7, 1958
Creator: Steffen, K. G.
Partner: UNT Libraries Government Documents Department
open access

Main Coolant Pump Performance Test. Section I. First Performance. Core I, Seed 1. Test Results DL-S-290, T-641326

Description: The purpose of the test was to obtain performance data for the main coolant pumps on fast and slow speed at various coolant temperatures. The 1A, 1B and 1C pump performances on both fast and slow speed were approximately as shown in the manufacture's predicted performance curve. The 1D pump performance was below the manufacturer's predicted flow efficiency, line current and hydraulic horsepower on both fast and slow speeds.
Date: December 7, 1959
Creator: Edwards, Gerald E.
Partner: UNT Libraries Government Documents Department
open access

Examination of Components for Crud and Corrosion. Section I. Second Performance. Core I, Seed 1. Test Results DL-S-155, T-612080

Description: The purpose of the test was to observe the extent and location of corrosion, crud deposits and defects in components of the primary fluid system and its auxiliaries. This observation will allow an estimate to be made of the future behavior of the affected parts. The test also provides for obtaining corrosion products and crud samples for analysis as necessary for planning remedial actions. This test was limited to the 1D Main Coolant Pump which failed November 3, 1958. The pump failed after 223… more
Date: December 7, 1959
Creator: Muldoon, James B.
Partner: UNT Libraries Government Documents Department
open access

The Shape of a Shock Wave Derived from a Spherical Shock Wave Incident on a Concave Wedge

Description: When a one-half ounce spherical charge of high explosive is detonated over a flat plane bounded by a 5 degree incline, the type of phenomenon encountered depends on the distance from ground zero to a beginning of the incline. If this distance is 48" the wave assumes a smooth contour on the plane. Detailed investigation of the shock velocity above the plane reveals that there is a pressure gradient along the shock front for a considerable region which replaces the usual triple point.
Date: July 7, 1954
Creator: Todd, Jay, Jr. & Schellenbaum, Ralph L.
Partner: UNT Libraries Government Documents Department
open access

Practical Methods for the Reduction of Strain Gage Data

Description: The error that results when it is attempted to evaluate stress from a reading taken on a single element SR-4 strain gage in a biaxial stress field is discussed. A method is presented for relating SR-4 rosette strain gage readings directly to the biaxial stress state without the necessity of first converting strain gage readings to true strains. Correction formulas are presented for use when single element SR-4 gages are used as rosette elements or as stress gages.
Date: September 7, 1955
Creator: Dove, Richard C.
Partner: UNT Libraries Government Documents Department
open access

Analytic Approach for the Pion-Proton Scattering Phase Shifts

Description: A simple method of solving for the phase shifts of the pion-proton scattering is presented. The rapid solution afforded can be utilized, as the Ashkin diagrams have been employed, to give starting values to an electronic computer or alternatively to analyze with more ease the variation of the phase shifts as a function of the input data in terms of the coefficients of the angular distributions. A new plot of a function of the total cross section versus the pion energy is introduced. The nearly … more
Date: December 7, 1955
Creator: Rarita, William, 1907-
Partner: UNT Libraries Government Documents Department
open access

The Helium Purification System for the Proposed 800 MWT Pebble Bed Reactor

Description: A helium coolant purification system was designed for the proposed 800 MWT Pebble Bed Reactor. The purification system will operate on a coolant side stream with a flow rate 1% of the total coolant flow and there are provisions for radioactive and non-radioactive contamination removal.
Date: December 7, 1960
Creator: Scott, C. D. & Suddath, J. C.
Partner: UNT Libraries Government Documents Department
open access

Synthesis of Dimethyl Selenide

Description: The preparation of essentially pure dimethyl selenide for the Isotype Separations Group, Chemistry Division, is described. The compound was prepared by warming a mixture of selenium, sodium hydroxide, sodium formaldehyde sulfoxylate in aqueous solution for several hours at 50°C and then adding methyl iodide. Dimethyl selenide was removed by distillation.
Date: October 7, 1960
Creator: White, J. C.
Partner: UNT Libraries Government Documents Department
open access

Study of Dispersant Agents for Thorium Oxide

Description: A preliminary study of dispersing agents for thorium oxide has been completed and several of the dispersants have possible uses. Also many of the industrial dispersing agents tested are not usable with thorium oxide due to induced behavior causing balling and caking. The effects of nitric acid concentration have been observed to also effect each dispersing agent.
Date: August 7, 1959
Creator: Bate, L. C. & Leddicotte, G. W.
Partner: UNT Libraries Government Documents Department
open access

Radiators for Space Power Plants

Description: An improved heat sink for space vehicles was proposed in ORNL-CF-59-1-21. Subsequent work on the problem has indicated that there is a substantial probability of a puncture of such a radiator by meteors. To meet this problem a modified geometry has been evolved for which the probability of a meteor puncture should be reduced by a factor of at least 100 relative to the radiator of the original proposal at the expense of an increase in radiator weight of possibly 30%. This memorandum outlines the… more
Date: August 7, 1959
Creator: Fraas, A. P.
Partner: UNT Libraries Government Documents Department
open access

A Feasibility Report on a Method of Direct Total Body Measurement of Enriched Uranium in Man

Description: In certain phases uranium processing it is poss!ble for operating personnel to acquire internal deposits of uranium. This body burden can be acquired by injection, as in contamination of a wound, by ingestion, of by inhalation. In order to estimate internal exposures, some means of determining the location and extent of these internal deposits is essential.
Date: August 7, 1959
Creator: Sanders, Fred W.
Partner: UNT Libraries Government Documents Department
open access

Volatility Pilot Plant : Design of a NaF Packed Tower for Removing HF from Fluorine

Description: A 4-ft-7-in. adsorption column packed with 1/8 in. sodium fluoride pellets was designed to reduce the hydrogen fluoride content of the fluorine being used by the Volatility Pilot Plant from 5% to less than 0.01%. It will be a non-isothermal packed bed with the bas inlet heated to 100 C to avoid plugging and the exit cooed to 25 C for more complete HF removal.
Date: March 7, 1957
Creator: Watson, J. S.
Partner: UNT Libraries Government Documents Department
open access

The Sodium Hydroxide - Sodium Hydride System

Description: Portions of the NaOH-NaH phase diagram were studied by means of differential thermal analysis. Under certain conditions NaH will either react with NaOH according to the equation NaH + NaOH in equilibrium Na/sub 2/O + H/ sub 2/ or thermally dissociate according to the equation NaH in equilibrium Na + 1/2 H/sub 2/. Both of these reactions are suppressed by a high H/sub 2/ pressure; and NaH neither reacts nor dissociates to an extent sufficient to affect the results reported. This was evidenced by… more
Date: March 7, 1957
Creator: Kerzner, Marvin S.; Kelly, Henry C. & Johnson, Sidney
Partner: UNT Libraries Government Documents Department
open access

The Sodium Hydroxide - Sodium Oxide - Sodium - Sodium Hydride - Hydrogen System

Description: Sodium hydride dissolves in and reacts with molten NaOH to give an equilibrium mixture of NaH, NaOH, Na/sub 2/O, Na, and H. In the case where there is a gaseous phase (hydrogen) and only one condensed phase, the system is defined by the temperature, pressure, and one composition variable. The equilibrium, H/ sub 2/ pressure, which is a measure of the H/sub 2/ activity within the melt, was determined as a function of the composition of the condensed phase(s) at 600, 700, and 500 deg for equilibr… more
Date: March 7, 1957
Creator: Kelly, Henry C.; Sullivan, Edward A. & Johnson, Sidney
Partner: UNT Libraries Government Documents Department
open access

Metallographic Examination of ORNL #1, SHE #2

Description: Small Heat Exchanger ORNL #1, type SHE #2, was removed form test stand B after 2071 hours of operation. Thirty-five samples were removed form the entire heat exchanger. The corrosion found on the outside of the tubes exposed to the fluoride mixture ranged to a maximum depth of .004 inches; however, the frequency of occurrence along the tube wall was heavier at the NaK outlet header, which was the hottest area in the heat exchanger. The depth of attack observed on the fluoride side of this heat … more
Date: February 7, 1957
Creator: VanCleve, J. E.; DeVan, J. H. & Crouse, R. S.
Partner: UNT Libraries Government Documents Department
open access

Effect of Pressure Differentials on Deflection of the Outer Fuel Plates of Brazed APPR Fuel Elements

Description: One of the considerations in designing a flat plate fuel element is the resistance of the fuel plates, especially the outer plates in the fuel plate array, to deflection and permanent deformation as a result of pressure differentials. An investigation was recently initiated wit the objective of obtaining preliminary information on the APPR-type fuel element to determine the effect of pressure differentials on the outer plates in the fuel assembly. The APPR-1 fuel element consists of 18 flat com… more
Date: February 7, 1957
Creator: Erwin, J. H. & Beaver, R. J.
Partner: UNT Libraries Government Documents Department
open access

Operation of In-Pile Loop L-4-12

Description: Loop L-4-12 was the seventh corrosion test loop operated in HB-4 beam hole at the LITR. The loop was inserted on January 24, 1956, and removed on April 17, 1956. This loop had a titanium core which was attached to the 347 stainless steel loop with special titanium to stainless steel couplings.
Date: January 7, 1957
Creator: Walter, F. J.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen