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Protection of Carbon Steel from Atmospheric Corrosion
The NPR design calls for carbon steel to be the major constituent in the reactor coolant piping system. The piping and its associated fittings will, in all likelihood, be exposed to atmospheric weather conditions during the period of reactor construction. This type of exposure causes rusting. From experience gained during the startup of KER Loop 1 it is expected that there will be initially high NPR coolant activity levels. The high activity during the startup of KER Loop 1 was partially caused by the activation of rust that was eroded from pipe walls. Prevention of rusting on the carbon steel prior to its introduction into the coolant system would reduce the initial activity levels.
Date:
October 22, 1959
Creator:
Perrigo, Lyle D., Jr. & Moles, R. G.
Object Type:
Report
System:
The UNT Digital Library
Soil Column Studies with Radiostrontium I. Effects of Temperature and of Species of Accompanying Ion
Soil chemistry studies have been carried on at Hanford for a number of years in support of the disposal of low and intermediate level liquid wastes to the ground. Equilibrium type experiments were carried out to investigate the mechanisms of the reactions of Sr, Cs, and rare earth ions with soils (1, 3, 4, 5). Experiments were also conducted with simulated and actual wastes in soil columns and an empirical method was developed for prediction of radionuclide breakthrough from ground disposal facilities into ground water on the basis of short, laboratory soil columns and equilibrium experiments (6,7). In this method it is assumed that the shape and position of the breakthrough curve is the same under laboratory conditions as in the larger scale field case. It is also assumed that the "column volume" or amount of soil effectively used for fission product sorption is that directly under a disposal facility without considering any spreading of waste solutions. These assumptions are known to be on the conservative side, but the degree of conservativeness is not known.
Date:
September 22, 1959
Creator:
Nelson, J. L.
Object Type:
Report
System:
The UNT Digital Library
3 Plant Radiation Study Interim Report #5- Part II Data on Gamma Shielding of Special Plutonium Samples
The calculation of shielding the thickness for plutonium is complicated by the many different energies represented in the gamma radiation emitted during decay of the plutonium isotopes. Dose rate predictions are also frequently confused by gamma from varying content of fission product impurities in the plutonium, as well as other gamma radiation induced through alpha and neutron particle absorption within the source material or its environment. After assumptions are made for these many factors the radiation data for shielding determination is still frequently inadequate because of wide variations in dose rates resulting from self-absorption. The degree if self-shielding is in turn dependent on nature of the plutonium compound, degree of compactness, weight, and over-all geometrical distribution of the source material. By preparing a variety of plutonium samples representing combinations of these varying factors, actual dose rates and gamma spectra, as obtained from them, can then be extrapolated for application to specific situations.
Date:
October 22, 1959
Creator:
Moulthrop, H. A.
Object Type:
Report
System:
The UNT Digital Library
A Microspark Apparatus for the Study of Inclusions in Metals
A study of metallurgical problems resulting from variation in grain boundaries, bonding layers, and inclusions in metals and alloys has become increasingly important over the past several years. To keep pace with and aid in these studies, several new techniques have been developed in emission and X-ray spectroscopy. In X-ray, areas as smalls as one square micron can be studied by making them targets for a focused electron beam and observing the X-rays emitted (5,2). Such an instrument would be quite helpful at Hanford, but the high original cost is prohibitive.
Date:
July 22, 1959
Creator:
Smith, F. M.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Solution and Vessel Thermal Expansion on Volume Measurements in the Chemical Processing Department
The major portion of transfers and inventory in the Chemical Processing Department are dependent on volume measurement. Good volume measurements are therefore essential to good SS material control. Considerable attention has been given to the volume problem especially on primary transfer points. Document HW-57888 discusses the biasing effect pf temperature on manometer oil. HW- 57866 given the procedure for vessel calibration. Other undocumented correspondence has discussed recent calibrations and certain aspects of temperature considerations in the volume determinations. However, there is a need to document for future reference the consideration given temperature and provide at the same time information which covers the temperature angle on all volume methods used in the Chemical Processing Department.
Date:
May 22, 1959
Creator:
Johnson, W. R.
Object Type:
Report
System:
The UNT Digital Library
Limitations for Existing Storage Tanks for Radioactive Wastes from Separations Plants
Continued process improvements in the separation plants provide an incentive for economics in waste storage costs by utilizing existing facilities to their maximum capability consistent with the radiological hazards involved. The major improvements have reduced waste volumes resulting in increased fission product concentration and energy potential. Analyses have been made to determine the effect of this change on the integrity of the existing structures.
Date:
October 22, 1959
Creator:
Doud, E.
Object Type:
Report
System:
The UNT Digital Library
Composition of Solids from Purex LWW
The solids in Purex lww were first observed during flowsheet tests for recovery of fission products from plant wastes. Since the nature of this solid was not apparent from the flowsheet composition of lww, some work was performed to characterize this material. Although this work has been conducted over a period of about one year, it has been subordinate to the main one of testing flowsheets for fission product recovery. The solids have been observed in each of about six samples of plant lww that have been studied, and the centrifuged volume of solids has been about four percent in each case.
Date:
January 22, 1959
Creator:
Van Tuyl, H.H.
Object Type:
Report
System:
The UNT Digital Library
Beam Separators for Bev Particles
The problem of separation of beams of particles of different masses but of the same momentum at Bev energies is the subject of a great deal of study at several high energy laboratories. In this note we shall describe the problem and tabulate a few of the cogent parameters. Frequently the student of high energy interactions is faced with a beam of miscellaneous particles coming from an accelerator. By standard techniques this beam can be rendered approximately parallel and an inch or so in diameter. By passage through a magnetic field the beam can be analyzed in momentum. Now it frequently happens that the particles in which the experimenter is particularly interested make up only a small fraction of the beam and the exigencies of the proposed experiment may well demand that the background of undesired particles be drastically reduced. The problem is difficult because the velocities of the various particles are almost equal to each other and to the velocity of lights; this makes time-of-flight techniques relatively ineffective. The energies of the particles are almost equal so electrostatic separation also is difficult. Since the beam is already analyzed in momentum, further separation by magnetic means is impossible.
Date:
January 22, 1963
Creator:
Blewett, J. P.
Object Type:
Report
System:
The UNT Digital Library
Summary of Research Progress Meetings of October2 and October 9, 1952
Summary of research progress meetings of October 2 and October 9, 1952: High speed high vacuum ion pump, High energy ion irradiation, Space charge accelerator for protons, Availability of the [ ] meson beam at the cyclatron, Effect of chemical structure on stopping powers for high energy protons.
Date:
October 22, 1952
Creator:
Shewchuck, Sergey
Object Type:
Report
System:
The UNT Digital Library
Nine-Channel Polychromator For Observation Of Time-Dependent Spectral Line Profiles
The instrument (polychromator) described observes time-dependent spectral-line profiles by simultaneous measurement at nine different wavelengths of light intensity as a function of time. A cylindrical lens magnifies the dispersion of a Jarrell-Ash Model S2000 Ebert Monochromator and forms an image on a light-pipe solder. Light pipes transfer light from various sections of the image--i.e., different wavelengths--to photomultiplier tubes, and the responses are displayed on oscilloscopes. The instrument has been used to look at total wavelength spans of 15 A and 20 A.
Date:
January 22, 1962
Creator:
Spillman, George R. & Cooper, William S., III
Object Type:
Report
System:
The UNT Digital Library
On the Annealing and Aging of Zircaloy-3b
The object of this study was to determine the effects of several annealing treatments and aging treatments on the tensile test behavior of Zircaloy-3b.
Date:
October 22, 1956
Creator:
Johnson, D. E.
Object Type:
Report
System:
The UNT Digital Library
Hazardous Materials - Redox Plant
The Redox process uses or produces only a very few materials that are hazardous for reasons other than radioactivity. The conditions under which these materials become hazardous were carefully taken into consideration in the development of the process and design of the equipment. A considerable about of information on the hazardous properties of the process materials was obtained so that the pertinent material could be incorporated into the process specifications. Providing the equipment is operating properly and the process is being carried out within specification limits, no hazardous conditions can be created by the process. The purpose of this report is to assemble in a single, readily available document all of the information on the normal concentration limits and safe handling procedures needed to adequately control the use and storage of these materials. This report should be helpful in preparing safety bulletins and provide guidance in case of unusual incidents, malfunctioning of equipment, or contemplated changes in either the process or equipment. It is important to remember that a maximum allowable concentration (MAC) is only a limit on the concentration of a toxic material which cannot be exceeded in the air to which workers are constantly exposed to every working …
Date:
May 22, 1956
Creator:
Underwood, J. W.
Object Type:
Report
System:
The UNT Digital Library
Radioactivity Levels of the Columbia River below Richland, Washington for the Period July, August, September 1955
Below Richland, Washington there is a gradual decrease in the concentration of beta particle emitters in the Columbia River water. The concentration of alpha particle emitters in Columbia River water averages 5 X 10⁻⁹ μl/ml at all locations. The activity of alpha particle emitters in mud samples was less than the detection limit of 3 x 10⁻⁶ μl/gm; the average activity density of beta particle emitters approximates those reported for the previous quarter.
Date:
March 22, 1956
Creator:
Rostenbach, R. E.
Object Type:
Report
System:
The UNT Digital Library
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The design criteria are written to supply information for the preparation of a project proposal covering budget item B-2265 for Fiscal Year 1956. The function of in-line instrumentation installed shall be the rapid on-the-spot analysis of process variables for quick presentation to process operators for immediate action in process control. Alarm or safety circuits may be incorporated on the equipment.
Date:
February 22, 1956
Creator:
Hildreth, N. T.
Object Type:
Report
System:
The UNT Digital Library
A Tentative Anion Exchange-Precipitation Procedure for the Determination of Cs¹³⁷
An anion exchange precipitation procedure was developed for the determination of Cs¹³⁷ in various aged fission product waste solutions, and other solutions containing Cs¹³⁷. The procedure is based on the ability of an anion exchange column to function simultaneously at an anion exchanger and as a precipitating agent (1).
Date:
December 22, 1955
Creator:
Perkins, R. W.
Object Type:
Report
System:
The UNT Digital Library
Purification of Mercury Metal
Mercury to be used in polarography as a dropping mercury electrode must be of the highest purity. The author has found that much of the commercial "triple-distilled" mercury as well as that which is repurified on site is not sufficiently pure and because of this, a study of mercury purification techniques was made and a very satisfactory procedure was tested thoroughly. This procedure is described in detail in this report.
Date:
November 22, 1955
Creator:
Koyama, Karl
Object Type:
Report
System:
The UNT Digital Library
Electrical Precipitator for Aerosol Collection on Electron Microscope Screens
In order to utilize the advantages of the electron microscope for the study of respirable particles, it is desirable to have an instrument capable of sampling from atmospheres having very sparse dispersions of particles at a rate sufficiently high to result in precipitation densities of approximately one particle per 10/u² of microscope screen for a 10 minute sampling period. In order to avoid qualitative or quantitative alteration of the aerosol, it was desired that the instrument collect the sample directly on an electron microscope screen rather than on a filter material for subsequent transfer to the screen. This paper summarizes work aimed at the development of such an instrument.
Date:
September 22, 1955
Creator:
Baum, J. W.
Object Type:
Report
System:
The UNT Digital Library
Improved Calibration Facility
Aid in redesign of the calibration facility in order to: 1. Reduce the rate of exposure for calibration personnel below 1 mr/hr; 2. Reduce the rate of exposure outside of the 3745 Building; 3. Reduce the risk of breaking radium sources; 4. Improve the efficiency of calibration procedures by: a. Allowing calibration to be done faster; b. Providing several calibration ranges which can operate simultaneously in the present space allowed; c. Allowing instrument survey work to proceed while calibration work is done. A well-type calibration installation is proposed and a brief description of the required shielding is included.
Date:
August 22, 1995
Creator:
Roesch, W. C.
Object Type:
Report
System:
The UNT Digital Library
City of Denton Texas 2020-21 annual program of services
The report provides an overview of the City of Denton’s budget process and budget documents. The City of Denton has prepared a budget designed to meet the highest standards of performance in municipal budgeting. This document provides a summary of all budgeted funds, including both revenue and expenditure summaries. Major budget documents, the budget process, and organization of the budget itself are described in this report.
Date:
September 22, 2019
Creator:
Denton. City of Denton
Object Type:
Report
System:
The Portal to Texas History
Texas Register, Volume 46, Number 43, Pages 7099-7288, October 22, 2021
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
October 22, 2021
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A Study of the Mechanism of Radiation Induced Gelation in Monomer-Polymer Mixtures
"Additional mixtures of polymers and multi-unsaturated monomers have been prepared, irradiated and the gel content determined. The gel content determination of crosslinked polyolefins has been investigated in detail. The multi-unsaturated monomers used and radiation conditions applied up to this time have not given significant gel contents for polypropylene. the polypropylene resin used has been characterized by differential extraction."
Date:
November 22, 1960
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Conical Refraction in Crystal Optics and Hydromagnetics
When light propagates with the wave normal in the direction of an optic axis of a biaxial crystal, the usual ray theory breaks down. This phenomenon can be analyzed by means of an asymptotic solution of Maxwell's equations. The intensity is governed by a partial differential equation within the phase surfaces, instead of ordinary differential equations along rays. This example slows that light does not always propagate along rays. A similar phenomenon occurs in hydromagnetics.
Date:
April 22, 1960
Creator:
Ludwig, Donald
Object Type:
Report
System:
The UNT Digital Library
Texas State Library and Archives Commission Annual Report: October 22, 2019
Annual report of the Texas State Library and Archives Commission describing goals, activities, and accomplishments during fiscal year 2019. Reviews the actual performance for outcome and explanatory measures (revised) and the fourth-quarter output and efficiency measures.
Date:
October 22, 2019
Creator:
Texas State Library and Archives Commission. Archives and Information Services Division.
Object Type:
Report
System:
The Portal to Texas History
Public Utility Rulebook Updates: May 22, 2020
Memorandum providing updates to rulebook related to public utilities with revised pages containing amendments and instructions for inserting the new pages into existing books.
Date:
May 22, 2020
Creator:
Texas. Public Utility Commission.
Object Type:
Text
System:
The Portal to Texas History