UNT Libraries Government Documents Department - 37 Matching Results

Search Results

Results: 1 - 24 next
open access

Advanced gas cooled nuclear reactor materials evaluation and development program. Progress report, July 1--September 30, 1978

Description: Results of work performed from July 1, 1978 through September 30, 1978 on the Advanced Gas Cooled Nuclear Reactor Materials Evaluation and Development Program are presented. Candidate alloys were evaluated for Very High Temperature Reactor Nuclear Process Heat (NPH) and Direct Cycle Helium Turbine (DCHT) applications, in terms of the affect of simulated reactor primary coolant (Helium containing small amounts of various other gases), the high temperatures, and long time exposures, on the mechan… more
Date: November 24, 1978
Item Type: Refine your search to only Report
open access

Analysis of LOFT containment nozzles 11A, 11B, 11D, 12A, 13B, 13C, and 13D by Bijlaard method

Description: The purpose of this analysis was the calculation of stresses in the LOFT Containment Vessel at the point of nozzle penetration produced by loads on the nozzles and to show that those stresses are within the 1965 ASME Boiler and Pressure Vessel Code allowables. The stress determination was done by the method developed by P. P. Bijlaard on the worst load case for each diameter nozzle. The operating basis earthquake (OBE) at nozzle 11D produced the most severe load case. All load cases resulted in… more
Date: July 24, 1978
Creator: McFadden, D.F.
Item Type: Refine your search to only Report
open access

Control of Stress Corrosion Cracking in Storage Tanks Containing Radioactive Waste.

Description: Stress corrosion of carbon steel storage tanks containing alkaline nitrate radioactive waste, at the Savannah River Plant is controlled by specification of limits on waste composition and temperature. Actual cases of cracking have occurred in the primary steel shell of tanks designed and built before 1960 and were attributed to a combination of high residual stresses from fabrication welding and aggressiveness of fresh wastes from the reactor fuel reprocessing plants. The fresh wastes have the … more
Date: April 24, 1978
Creator: Ondrejcin, R. S.; Rideout, S. P. & Donovan, J. A.
Item Type: Refine your search to only Article
open access

Development of ultrafiltration and inorganic adsorbents for reducing volumes of low-level and intermediate-level liquid waste: October--December 1977

Description: The exposures of noncellulosic ultrafiltration membranes to a radioactive environment simulating up to 24 months of exposure to a ..beta.. dose of 10 ..mu..Ci/cm/sup 3/, a ..gamma.. dose of 10/sup -5/ ..mu..Ci/cm/sup 3/, and an ..cap alpha.. dose of 4.9 x 10/sup -3/ ..mu..Ci/cm/sup 3/ were completed. Exposure to ..beta.. and ..gamma.. radiation did not affect membrane performance. After a simulated six months of exposure to ..cap alpha.. radiation some degradation of membrane performance occurr… more
Date: February 24, 1978
Creator: Koenst, J. W.; Herald, W. R. & Roberts, R. C.
Item Type: Refine your search to only Report
open access

Dislocation substructures in high-energy-rate-forged and press-formed 21-6-9 stainless steel

Description: A Transmission Electron Microscope (TEM) was used to establish that the substructure of press formed (PF) 21-6-9 stainless steel toroids was characterized by a dislocation cell size finer, about 0.16 ..mu..m, than that of about 0.29 ..mu..m, of high-energy-rate-formed (HERF) processed toroids. In addition, HERF processed material showed areas of a coarser, well-developed subgrain structure characteristic of hot work deformation. The formation of the substructures, as-well-as the grain size and … more
Date: July 24, 1978
Creator: Sanderson, Elane C.; Brewer, Arvel W.; Krenzer, Robert W. & Krauss, George
Item Type: Refine your search to only Report
open access

Dispersion of miscible fluids in porous media. Part 2

Description: Miscible-liquid displacements of water/ethanol solutions were conducted in a 2.54-cm-ID column packed with glass beads of 275 to 300 and 25 to 30 mesh with bed heights of 6.35 to 40.8 cm. The viscosity ratio of the resident fluid to displacing fluid was maintained at 0.72 for fluid pairs with favorable density differences. Dispersion coefficients obtained from a two-parameter model increased from approx.3 x 10/sup -5/ to approx.2 x 10/sup -2/ cm/sup 2//s with increasing packing particle size, f… more
Date: May 24, 1978
Creator: Cheng, Y. L.; Budiman, B. & Machbitz, M.
Item Type: Refine your search to only Report
open access

Double-shelled target simulations with LASNEX

Description: Double-shelled inertial confinement fusion targets in which the outer shell is exploded have been studied with LASNEX. To achieve high DT density, configurations have been found in which the inner shell is ablatively driven by the hot outer shell. Calculations indicate that greater than 100 times liquid DT density can be achieved with the Shiva laser while still retaining some of the symmetry and stability advantages of the single-shelled exploding pusher target. The relative merits of transfer… more
Date: October 24, 1978
Creator: McClellan, G.
Item Type: Refine your search to only Article
open access

Earth Sciences Division, collected abstracts-1977. [Research programs]

Description: This report is a compilation of abstracts of papers, internal reports, and talks presented during 1977 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore Laboratory. It is arranged alphabetically by author and includes a cross-reference by subject indicating the areas of research interest of the Earth Sciences Division.
Date: May 24, 1978
Creator: Quitiquit, W. A.; Ledbetter, G. P. & Henry, A. L.
Item Type: Refine your search to only Report
open access

Heavy ion clusters in the TDHF approximation. [112 to 384 MeV, cross sections]

Description: The time-dependent Hartree-Fock method is used to produce time dependent graphical representations of the density contours of the binary cluster in the reactions /sup 14/N(112 MeV) + /sup 12/C, /sup 16/O(384 MeV) + /sup 16/O, and /sup 20/Ne(164 MeV) + /sup 58/Ni. Alpha clustering and multipole shape vibrations are seen. Predictions for d sigma/d..cap omega.., d sigma/dZ/sub f/, and d/sup 2/sigma(E/sub f/)d..cap omega..dE/sub f/vertical/sub z//sub f/ are obtained in the case of /sup 14/N + /sup … more
Date: May 24, 1978
Creator: Cusson, R.Y.; Gomez del Campo, J. & Meldner, H.W.
Item Type: Refine your search to only Article
open access

Improved optics for automatic stored-seam tracking on an electron-beam welder

Description: A commercial 7.5-kW electron-beam welder has been optically upgraded. The viewing system has been replaced by high-resolution optics (36 line pairs per millimeter (36l/mm) with video option. A high-intensity arc lamp provides illumination of the weld region. The upgraded optical system provides the capability for making accurate and repeatable welds with computer-automated seam tracking.
Date: November 24, 1978
Creator: Kitzke, K. A.
Item Type: Refine your search to only Report
open access

Leaching characteristics of actinides from simulated reactor waste glass

Description: Two methods for measuring the leach rates of simulated high level waste glass are compared. One is a modification of the standard IAEA method and the other is a one-pass method in which fresh leachant solution is pumped over the sample at a controlled flow rate and temperature. For times up to 3 days, there is close agreement between results from the two methods at 25.0C. Leach rates from the one-pass method show no correlation with flow rate at 25.0C, but at 75.0C leach rate increases with flo… more
Date: October 24, 1978
Creator: Weed, H. C.; Coles, D. G.; Bradley, D. J.; Mensing, R. W. & Schweiger, J. S.
Item Type: Refine your search to only Article
open access

Material control system simulator program reference manual

Description: A description is presented of a Material Control System Simulator (MCSS) program for determination of material accounting uncertainty and system response to particular adversary action sequences that constitute plausible material diversion attempts. The program is intended for use in situations where randomness, uncertainty, or interaction of adversary actions and material control system components make it difficult to assess safeguards effectiveness against particular material diversion attemp… more
Date: January 24, 1978
Creator: Hollstien, R.B.
Item Type: Refine your search to only Report
open access

Material control system simulator user's manual

Description: This report describes the use of a Material Control System Simulator (MCSS) program for determination of material accounting uncertainty and system response to particular adversary action sequences that constitute plausible material diversion attempts. The program is intended for use in situations where randomness, uncertainty, or interaction of adversary actions and material control system components make it difficult to assess safeguards effectiveness against particular material diversion att… more
Date: January 24, 1978
Creator: Hollstien, R.B.
Item Type: Refine your search to only Report
open access

Normal incident solar radiation measurements at Upton, New York

Description: Normal incident solar energy measurements made at Upton, L.I., New York are reported and analyzed relative to the total energy received on a horizontal surface. A new method for computing normal incident solar radiation is developed and used to study long term variations in this energy source at Upton and to estimate average values for other east coast locations.
Date: October 24, 1978
Creator: Cottingham, J.G.
Item Type: Refine your search to only Report
open access

Photovoltaic module design, qualification and testing specification

Description: This specification establishes minimum design, qualification and acceptance requirements for terrestrial solar cell modules suitable for incorporation in photovoltaic array applications in the 20 kW to 500 kW range, such as defined by Department of Energy PRDA EM-D-04-0038. Both mandatory and recommended requirement levels for selected performance criteria have been specified for modules within these arrays. As applicable, the manufacturer/contractor shall be responsible for generation and sele… more
Date: March 24, 1978
Item Type: Refine your search to only Report
open access

Photovoltaic module design, qualification, and testing specification. Low-Cost Solar Array Project

Description: This specification establishes minimum design, qualification and acceptance requirements for terrestrial solar cell modules suitable for incorporation in photovoltaic array applications in the 20kW to 500kW range, such as defined by Department of Energy PRDA EM-D-04-0038. Both mandatory and recommended requirement levels for selected performance criteria have been specified for modules within these arrays. As applicable, the manufacturer/contractor shall be responsible for generation and select… more
Date: March 24, 1978
Item Type: Refine your search to only Report
open access

Preliminary archaeological survey of proposed gas well locations in Green Township (Scioto County) and Elizabeth Township (Lawrence County) Ohio

Description: The present archaeological survey and cultural resource assessment were conducted for the United States Department of Energy, Morgantown Energy Technology Center in areas to be disturbed by gas well drilling and holding pond construction. The project area is the Pine Creek drainage system, which is a tributary of the Ohio River in Scioto and Lawrence Counties, Ohio. The literature search indicated that prehistoric archaeological sites do occur and have been documented in the Pine Creek drainage… more
Date: October 24, 1978
Creator: Black, D.B.; Peebles, C.S. & Zielinski, R.E.
Item Type: Refine your search to only Report
open access

Primary Factors Governing Hydraulic Fractures in Heterogeneous Stratified Porous Formations

Description: Some primary material, macrostructural and tectonic features of typical geological formations are identified, insofar as they affect the hydraulic fracturing operation whereby suitably treated fluid is pumped into massive crack(s) underground: the retardation or channeling due to strata interfaces, discontinuities and other heterogeneities is roughly characterized, in the context of fully three-dimensional crack shape evolution, and the initiation from oriented boreholes is discussed in detail.… more
Date: August 24, 1978
Creator: Cleary, M. P.
Item Type: Refine your search to only Article
Back to Top of Screen