Resource Type

Environmental Pollution: Legislation and Programs in the Areas of Water and Air Pollution and Solid Waste Management (open access)

Environmental Pollution: Legislation and Programs in the Areas of Water and Air Pollution and Solid Waste Management

This report discusses past and current legislation related to air and water pollution as well as solid waste management.
Date: May 22, 1970
Creator: Wellman, John Douglas
System: The UNT Digital Library
Reference design for the standard mirror hybrid reactor (open access)

Reference design for the standard mirror hybrid reactor

This report describes the results of a two-year study by Lawrence Livermore Laboratory and General Atomic Co. to develop a conceptual design for the standard (minimum-B) mirror hybrid reactor. The reactor parameters have been chosen to minimize the cost of producing nuclear fuel (/sup 239/Pu) for consumption in fission power reactors (light water reactors). The deuterium-tritium plasma produces approximately 400 MW of fusion power with a plasma Q of 0.64. The fast-fission blanket, which is fueled with depleted uranium and lithium, generates sufficient tritium to run the reactor, has a blanket energy multiplication of M = 10.4, and has a net fissile breeding ratio of Pu/n = 1.51. The reactor has a net electrical output of 600 MWe, a fissile production of 2000 kg of plutonium per year (at a capacity factor of 0.74), and a net plant efficiency of 0.18. The plasma-containment field is generated by a Yin-Yang magnet using NbTi superconductor, and the neutral beam system uses positive-ion acceleration with beam direct conversion. The spherical blanket is based on gas-cooled fast reactor technology. The fusion components, blanket, and primary heat-transfer loop components are all contained within a prestressed-concrete reactor vessel, which provides magnet restraint and supports the primary …
Date: May 22, 1978
Creator: Bender, D. J.; Fink, J. H.; Galloway, T. R.; Kastenberg, W. E.; Lee, J. D.; Devoto, R. S. et al.
System: The UNT Digital Library
Leaching of radioactive nuclides from cement grouts. [Method for measuring rate of leaching of Cs-137 from cement grouts] (open access)

Leaching of radioactive nuclides from cement grouts. [Method for measuring rate of leaching of Cs-137 from cement grouts]

A method for measuring the rate of leaching of /sup 137/Cs from cement grouts was investigated as an alternate to the International Atomic Energy Agency (IAEA) method which requires long experimental times. The effects of curing time (10, 20, and 30 days) and the type of leachant (tap and saline water) on the amount of /sup 137/Cs leached were studied. Mathematical models for mass transport phenomena for both finite cylindrical geometry and a semi-infinite medium were developed to analyze the data. It was found that the models for diffusion of /sup 137/Cs with depletion of the species due to curing provided the best correlation of the data. The proposed method was found to give values of the mass transport coefficients within a factor of 2 to 10 of the IAEA test results. Diffusion coefficients were found to be in the range of 10/sup -9/ to 10/sup -11/ cm/sup 2//sec and depletion rate constants in the range of 10/sup -6/ to 10/sup -8/ sec/sup -1/.
Date: May 22, 1974
Creator: Doerr, W. W.; Filiba, R. & Wang, M.
System: The UNT Digital Library
Nuclear and chemical safety analysis: Purex Plant 1970 thorium campaign (open access)

Nuclear and chemical safety analysis: Purex Plant 1970 thorium campaign

The purpose of this document is to discuss the flowsheet and the related processing equipment with respect to nuclear and chemical safety. The analyses presented are based on equipment utilization and revised piping as outlined in the design criteria. Processing of thorium and uranium-233 in the Purex Plant can be accomplished within currently accepted levels of risk with respect to chemical and nuclear safety if minor instrumentation changes are made. Uranium-233 processing is limited to a rate of about 670 grams per hour by equipment capacities and criticality safety considerations. The major criticality prevention problems result from the potential accumulation of uranium-233 in a solvent phase in E-H4 (ICU concentrator), TK-J1 (IUC receiver), and TK-J21 (2AF pump tank). The same potential problems exist in TK-J5 (3AF pump tank) and TK-N1 (3BU receiver), but the probabilities of reaching a critical condition are not as great. In order to prevent the excessive accumulation of uranium-233 in any of these vessels by an extraction mechanism, it is necessary to maintain the uranium-233 and salting agent concentrations below the point at which a critical concentration of uranium-233 could be reached in a solvent phase.
Date: May 22, 1970
Creator: Boldt, A. L. & Oberg, G. C.
System: The UNT Digital Library
Results of the development and field demonstration program on cavitation descaling techniques for pipes and tubes used in geothermal energy plants. Volume I (open access)

Results of the development and field demonstration program on cavitation descaling techniques for pipes and tubes used in geothermal energy plants. Volume I

The conversion of geothermal energy into usable electrical power has become increasingly important to the overall national energy needs. A major area of technical interest which has resulted from the initial development of geothermal power plants is the scale formation developed in the facility pipes and related components. This scale formation is due to the concentration of minerals in the geothermal water and steam. The current state-of-technology utilized for descaling consists of a combination of sandblasting, water blasting, acid soaking and scraping. These cleaning methods, used individually or collectively, do not provide an acceptable descaling operation due to excessive facility downtime and cost.
Date: May 22, 1978
Creator: Graham, F.C.; Thiruvengadam, A.P. & Hochrein, A.A., Jr.
System: The UNT Digital Library
Relativistic beam plasma instability in strong magnetic field (open access)

Relativistic beam plasma instability in strong magnetic field

None
Date: May 22, 1972
Creator: Berk, H.L.
System: The UNT Digital Library
Algorithms for reducing ytterbium (open access)

Algorithms for reducing ytterbium

None
Date: May 22, 1974
Creator: Hearst, J. R.
System: The UNT Digital Library
Wake field produced by a particle in the presence of conductive plates: a vehicle for the excitation of the coupled betatron-synchrotron instabilities (open access)

Wake field produced by a particle in the presence of conductive plates: a vehicle for the excitation of the coupled betatron-synchrotron instabilities

Beam instabilities observed in ADONE were studied. The interaction of a single particle betatron oscillation with conductive plates was analyzed. First, Fourier analysis of the field source was performed, then the usual approach to determine the plate response was used by treating the plates as transmission lines. Finally, with a process of anti-transformation the total response to the oscillation of a single particle was constructed. The wake field decays over a distance which is of the order of magnitude of the length of the plates themselves. Nevertheless, the shape of the wake field depends on the terminating independence. Several cases, for instance matched, open and shorted plates are considered. (auth)
Date: May 22, 1973
Creator: Ruggiero, Alessandro G.
System: The UNT Digital Library
Library of congress, legislative reference service - 1970 may22 (open access)

Library of congress, legislative reference service - 1970 may22

This report provides brief abstraction of information on the Federal agencies having responsibilities in the field of water resources.
Date: May 22, 1970
Creator: Elizabeth M.Boswel
System: The UNT Digital Library
Metrication in the 92nd and 93rd Congress (open access)

Metrication in the 92nd and 93rd Congress

This report is a survey of legislation introduced in the 92nd and 93rd Congress concerning adopting the Metric system in the United States
Date: May 22, 1974
Creator: Geier, Claire R.
System: The UNT Digital Library
Economic Simulations of Alternate Fiscal and Monetary Policies; 1974-1976 (open access)

Economic Simulations of Alternate Fiscal and Monetary Policies; 1974-1976

This report outlines how alternate fiscal policies affected the econometric simulations in the years 1974 through 1976
Date: May 22, 1974
Creator: Teeters, Nancy H.
System: The UNT Digital Library
Quantitative respirator man-testing and anthropometric survey (open access)

Quantitative respirator man-testing and anthropometric survey

None
Date: May 22, 1975
Creator: Leigh, J. D.
System: The UNT Digital Library
Reflector-nozzle design trade study. Trade study No. 780 (open access)

Reflector-nozzle design trade study. Trade study No. 780

None
Date: May 22, 1970
Creator: unknown
System: The UNT Digital Library
Alaska Native Claims Settlement Act of 1971 (P. L. 92-203): History and Analysis (open access)

Alaska Native Claims Settlement Act of 1971 (P. L. 92-203): History and Analysis

This report discusses the history of Alaskan indigenous peoples claims to their traditional lands under Russian and U.S. administration and the Alaska Native Claim Settlement Act of 1971 which gave formal land rights to the Alaskan indigenous peoples for their traditional lands.
Date: May 22, 1972
Creator: Jones, Richard S.
System: The UNT Digital Library
Foreign Housing Policies with Particular Reference to Europe: Selected References, 1956-1972 (open access)

Foreign Housing Policies with Particular Reference to Europe: Selected References, 1956-1972

This report provides a bibliography of resources related to housing policies in Europe that were published between 1956 and 1972.
Date: May 22, 1972
Creator: Wolff, Jane
System: The UNT Digital Library
Order of Fifinella Position Report (open access)

Order of Fifinella Position Report

Report compiled by Bee Haydu describing the infractions and questionable actions of former Order of Fifinella president, Lilian Roberts, with a note on the cover from "DD" stating its confidentiality and describing another situation that is not mentioned in the report. At the end is a letter from Haydu to other board members with a list of questions concerning recent events within the organization.
Date: 1979-05-22/1979-06-07
Creator: Haydu, Bee
System: The Portal to Texas History
Traffic Operations Program to Increase Capacity and Safety for the San Antonio Urban Area (open access)

Traffic Operations Program to Increase Capacity and Safety for the San Antonio Urban Area

A report on the comprehensive and continuing study initiated to develop from the existing street pattern a workable transportation system to serve the anticipated needs of the San Antonio Metropolitan Area.
Date: May 22, 1970
Creator: San Antonio Metropolitan Planning Organization
System: The Portal to Texas History
Status of ARPA-LLL 4-D propagation code development (open access)

Status of ARPA-LLL 4-D propagation code development

None
Date: May 22, 1974
Creator: Fleck, J. A., Jr.
System: The UNT Digital Library