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Predicting explosion-generated permeability around geothermal wells

Description: A theoretical expression showing the radial dependence of permeability in geologic media as a function of the distance from the point of detonation has been derived. This relationship shows that created permeability decreases as a function of radius (1/r/sup 5/ around a spherical blast and 1/r/sup 4/ around a cylindrical shot). Excellent correlation was found when this prediction was compared with permeability measurements made around the site of the Hardhat nuclear event fired in granodiorite … more
Date: January 8, 1976
Creator: McKee, C. R. & Hanson, M. E.
Partner: UNT Libraries Government Documents Department
open access

Measurements of neutron-induced fission cross-section ratios involving isotopes of uranium and plutonium. [0. 001 to 30 MeV, cross sections]

Description: A procedure, called the threshold cross section method was applied to our experimental data involving four uranium (/sup 233/U /sup 234/U, /sup 236/U, and /sup 238/U) and five plutonium (/sup 239/Pu, /sup 240/Pu, /sup 241/Pu, /sup 242/Pu, and /sup 244/Pu) isotopes to determine ratios of fission cross sections relative to /sup 235/U. The data were gathered using ionization fission chambers and the time-of-flight technique at the LLL 100-MeV electron linear accelerator: measurements span the neut… more
Date: June 8, 1976
Creator: Behrens, J. W. & Carlson, G. W.
Partner: UNT Libraries Government Documents Department
open access

Semi-automated x-ray gauging process control system. [For pressed-material components]

Description: An x-ray gauging method was developed and a production gauging system was subsequently fabricated to control the quality of precision manufactured components. The gauging system measures via x-ray absorption the density of pressed finely divided solids held in a dissimilar container. The two dissimilar materials condition necessitated a ''two scan'' technique: first, the x-ray attenuation (absorption) of the empty container prior to loading and then, the attenuation of the loaded container are … more
Date: October 8, 1976
Creator: Draut, C. F. & Homan, D. A.
Partner: UNT Libraries Government Documents Department
open access

Overview of the Imperial Valley Environmental Project. [Environmental effects associated with development of geothermal resources]

Description: The Lawrence Livermore Laboratory has been appointed by the U.S. Energy Research and Development Administration to be the lead laboratory for carrying out a long-term project to acquire complete understanding of the environmental quality in the Imperial Valley of California prior to any major developments. The purpose of this project is to ensure that the development of geothermal resources proceeds on an environmentally sound basis. Consequently, the Imperial Valley Environmental Project (IVP)… more
Date: April 8, 1976
Creator: Anspaugh, L. R. & Phelps, P. L.
Partner: UNT Libraries Government Documents Department
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