Technical Report Archive & Image Library (TRAIL) - 31 Matching Results
Search Results
- Refrigeration System Used in Mercury Isotope Collections
- From introduction: During 1948, the Isotope Research and Production Division undertook to obtain small quantities of nearly pure mercury isotopes by electromagnetic isotope separation. The possible use of a mercury isotope of even-numbered mass to establish an international standard of length required an isotopic purity greater than 99 per cent. It, became apparent that this degree of separation could only be achieved by preventing random diffusion of un-ionized mercury which otherwise would contaminate the isotope collectors.
- A Continuous Water Monitor for Detecting PPM Quantities of Alkali Metals
- Abstract: "This report describes a flame photometric system which continuously monitors a process water stream for ppm quantities of alkali metals, and automatically diverts the stream when the contamination exceeds a pre-determined level."
- Production of Zirconium at Y-12
- Abstract: "A general description is given of the permanent zirconium plant at Y-12. Equipment is described and materials of construction are listed. Photographs illustrating principal equipment and reduced construction drawings are also presented. Operating conditions and costs information are listed."
- Separation of Zirconium & Hafnium : Proposal for Construction & Operation of Zirconium Production Plant
- Abstract: A re-evaluation of the cost of producing essentially hafnium free zirconium as zirconium oxide at a rate of 150,000-200,000 pounds zirconium per year by solvent extraction of the metal thiocyanates in a permanent plant has been made. Using part of the present temporary facilities, the cost, with five year amortization of the plant, will be $3.15 per pound zirconium. A by-product of the mixed oxides of hafnium and zirconium, having at least fifty percent hafnium and perhaps as high as ninety percent hafnium, can be made available with little additional cost.
- Zirconium-Hafnium Separation : Mixer-Settler Studies : Final Report
- Abstract: Use of the mixer-settler apparatus as a rapid means of determining improved conditions for plant operation is described including the experimental details. The preparation of highly purified samples of both zirconium oxide and hafnium oxide is discussed. (This document is concerned almost entirely with explorations of small scale continuous systems. Another document dealing with this general problem using small scale batch operations is being published simultaneously. It should prove of advantage to the reader to study this companion report, Document Y-611, by Barton, Overholser, and Grimes, to obtain a complete picture of the available information.).
- Status Report and Plant Proposals for Zirconium Purification
- From abstract: "This report contains a summary of the latest improvements in zirconium purification as developed by the Y-12 research, pilot plant, production, and engineering groups, all of whom have been generously cooperating in this project."
- Uranium Concentration Meter
- From abstract; "Two basic instruments were developed for determining the concentration of uranium in solutions. Both instruments detect the gamma activity present in a sample solution, and interpret this analysis into direct presentation as parts per million."
- Portable Mercury Vapor Detector
- From abstract: "This report describes a functional mercury vapor detector which is a portable, self-contained, survey instrument, and had a minimum range from zero to two-tenths milligram of mercury per cubic meter of air."
- Accidental Radiation Excursion at the Y-12 Plant, June 16, 1958: Final Report
- This report describes the circumstances leading to the accident, attempts to reconstruct the nuclear reactivity conditions, and reviews the dosimetric means and results which were used to help determine the exposure of affected employees.
- In Vivo Gamma Counting Method of Determining Uranium Lung Burden in Humans
- Scintillation spectrometry is used to measure the gamma activity from uranium for determining lung burden in the human body.
- An Investigation of a "Dynamic" Theory for Mass Transfer
- A new theory is proposed to evaluate individual mass-transfer coefficients without actual experiment.
- Transistorized Pulse Counting Equipment
- This instrument was designed primarily to meet the need for radiation monitoring equipment in chemical process areas where corrosive vapors exist.
- The Cold Pressing of Sinterable UOâ‚‚
- The intent of this work was to explore more fully the pressing of sinterable UO2 powders into cylindrical compacts in the hope that a more precise prediction of green density in terms of powder properties, pressure, and geometry could be evolved.
- The Influence of Design and Production Parameters on Fabrication Costs of Nuclear Reactor Fuel Elements
- The objectives for this study were to determine fuel fabrication and assembly costs in a large nuclear power industry for several reactors, fuel rod sizes, and fuel materials.
- Salt Bath Heat Transfer Rates for Uranium Plate
- Experiment to study temperature conditions during a five-minute heating cycle in the annealing of uranium sheets used as fissile material.
- Automatic Mass Spectrometer for Isotopic Analysis of Lithium
- Report discussing an improvement program on lithium mass spectrometers.
- A Computer Program for Determining First-Collision Neutron Doses
- Data processing program written to compute the neutron dose received by individuals exposed in a nuclear excursion.
- Ionic Equilibria and Anion Exchange of Uranyl Sulfate Solutions
- Theoretical investigation on the nature of ion exchange of acidified uranyl sulfate solutions with Dowex 21K, a strong base ion exchange resin.
- Effects of Major Parameters on Cycle Efficiency and Cost for a Gas-Cooled Reactor Turbine Power Plant
- Cycle study performed on a closed loop Brayton cycle incorporating a gas-cooled nuclear reactor, regeneration, and compressor intercooling. The purpose of the study was to determine the effect of various cycle parameters on efficiency and cost.
- Cubic Spline, a Curve Fitting Routine
- A method of mathematically fitting a curve through a given ordered set of points has been developed and programmed in fortran computer language.
- Evaluation of Diethers as Uranium Extractants
- Report on the determination of several physical properties, pertinent to uranium extraction, for a number of ethers and related compounds.
- A Versatile Spectrometer Magnet Power Supply
- Early results from actual laboratory operation of a more versatile magnet supply.
- The Design and Performance of Levitation Melting Coils
- The purpose of this study was to provide a means for evaluating the various parameters involved in the design and performance of levitation coils.
- Stress Corrosion Cracking in Uranium-Molybdenum Alloys
- Investigation conducted to determine the cause of cracking, during tension, on the surface of tensile specimens of uranium-molybdenum alloys.
- Pressure Intensification Provided by External Pressure on a Cylinder Composed of Four Anvils
- Results of experimental investigation for improving intensification and to reduce stress concentrations for anvil redesign.
- The Application of Data Processing Techniques to a Maintenance Work Control Program
- Description of a data collection and reporting system which was devised and installed in the Union Carbide Nuclear Company's Y-12 Plant Maintenance Division.
- Effect of Explosive Impacting on Uranium
- Abstract: The tensile and yield strengths of both cast and wrought uranium discs were substantially increased by explosively impacting them at room temperature and at 375 deg F. However, the room-temperature impacting caused gross damage in the cast material and slight internal damage in the wrought material at the highest impacting pressures. Impacting at 375 deg F, which is just above the brittle-ductile transition temperature for uranium, was the most effective method for increasing the strengths with no damage to either the cast or wrought material. This impacted material retained some of its increased strength after a low temperature (425 deg C) vacuum anneal that greatly increased the elongation. A salt anneal caused a partial recrystallization in the impacted cast uranium. (auth).
- X-Ray Fluorescence Tables: Program Description
- Report discussing the mechanics of X-Ray and COMBO computer programs.
- Chemical Coolants for Machining Uranium in the Presence of Trace Amounts of Chloride
- Discussion of laboratory tests to reduce uranium corrosion.
- Welded Repair of Fill and Drain Holes in High-Carbon Steel Gas Storage Cylinders
- Report discussing the results of fill and drain holes for hydrostatic pressure tests on head knuckle radius of forged-steel gas storage cylinders.
- Spark-Source Mass Spectrometric Analysis of Common and Radiogenic Lead
- Analysis that is fast and has extremely low levels of detection for more than forty elements that may be present in lead.