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Effects of Seismic Vibrations on the Experimental Gas-Cooled Reactor

Description: The effects of seismic vibrations on the dynamic behavior of a composite system were analyzed. The equations of motion were derived and soIved with special emphasis on determining the resulting stresses. The method of analysis thus developed was applied to the composite structure consisting of the core, pressure vessel, and supporting skirt of the Experimental Gas-Cooled Reactor (EGCR). A system with three degrees of freedom was considered in order to determine the effects of an earthquake of t… more
Date: June 22, 1962
Creator: Witt, F.J.; Carver, D.R. & Maxwell, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical construction of the 22 Nova laser

Description: The Nova laser system for Inertial Confinement Fusion studies at Lawrence Livermore National Laboratory is under construction and will be completed October 1984 with first operations scheduled for 1985. This system is the largest precision opto-mechanical engineering system ever built. Major engineering and subsystems are mechanical, optical, and electrical power. A series of system technologies include alignment, diagnostics, target, frequency conversion, and controls. This paper will only dis… more
Date: November 22, 1983
Creator: Hurley, C.A.; Frick, F.A.; Patton, H.G.; Bradley, G. & Martos, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

DYNA3D analysis of the DT-20 shipping container

Description: A DYNA3D model of the DT-20 shipping container was constructed. Impact onto a rigid steel surface at a velocity of 44 ft/sec (30 foot gravity drop) was studied. The orientation of most interest was a side-drop, but end and corner drops were also studied briefly. The assembly for the baseline side impact contained a 150 lb. payload. During this drop, the outer drum sustains plastic strains of up to 0.15, with most the deformation near the rim. The plywood/Celotex packing is crushed about 3 inche… more
Date: August 22, 1991
Creator: Logan, R.W. & Lovejoy, S.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cryogenic structural materials for superconducting magnets

Description: This paper reviews research in the United States and Japan on structural materials for high-field superconducting magnets. Superconducting magnets are used for magnetic fusion energy devices and for accelerators that are used in particle-physics research. The cryogenic structural materials that we review are used for magnet cases and support structures. We expect increased materials requirements in the future.
Date: February 22, 1985
Creator: Dalder, E.N.C. & Morris, J.W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FORTE log periodic antenna. Phase 1, Final report

Description: This report summarizes the results of ABLE`s design study of the FORTE deployable log periodic antenna. The resulting Baseline Design of the antenna is the basis for ABLE`s proposal for Phase II of this program. ABLE`s approach to meeting the requirements is to use a coilable ABLE mast as the deployable structure ``backbone`` of the antenna and to use deployable tubes for. the log periodic dipole elements of the antenna. This general approach was adopted at the outset of the Phase I Design Stud… more
Date: April 22, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FLUX MEASUREMENTS FROM A TALL TOWER IN A COMPLEX LANDSCAPE

Description: The accuracy and representativeness of flux measurements from a tall tower in a complex landscape was assessed by examining the vertical and sector variability of the ratio of wind speed to momentum flux and the ratio of vertical advective to eddy flux of heat. The 30-60 m ratios were consistent with theoretical predictions which indicate well mixed flux footprints. Some variation with sector was observed that were consistent with upstream roughness. Vertical advection was negligible compared w… more
Date: July 22, 2010
Creator: Kurzeja, R.; Weber, A.; Chiswell, S. & Parker, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Deflection and Stress Analysis of the Yankee Core Support Structure

Description: The deflection and stresses of a medel of the Yankee lower core support structure, conslstlng of two clrcular perforated plates joined together by a clrcular reinforclng rib and 76 cylindrical spacers, were obtained experimentally. The relationships between the tests on the model and reference design were determined by an application of dimensional analysis. Experimental investigations are described in which various design parameters were determined and the structural rigidity of the assembly w… more
Date: September 22, 1958
Creator: Eng, G. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exposure of Reactor Structural Materials to Impure Helium at Elevated Temperatures

Description: In the High-temperature Gas-cooled Reactor (HTGR), structural metals will be required to operate at temperatures of 1000 to 1400 deg F in an impure- helium environment for extended periods of time. Six candidate materials for such applications, including nickel alloys and stainless steels, were subjected to simulated reactor environments for times up to 3000 hr to evaluate the extent of corrosion and the changes in mechanical properties occasioned by I such exposures. Under the experimental exp… more
Date: March 22, 1962
Creator: Weinberg, A. F. & Scoffin, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Sodium-Graphite Reactor Steam-Electric Station for 75 Megawatts Net Generation

Description: The major design features, nuclear characteristics and performance data for a nuclear fueled central station power plant of 75,000 kw net capacity are presented. The heat source is a Na cooled graphite moderated reactor. The design of the reactor takes full advantage of the experience gained to date on the Sodium Reactor Experiment (SRE); the plant described here is a straightforward extension of the smaller experimental SRE, which is now under construction. The fuel elements are made up of rod… more
Date: March 22, 1955
Creator: Weisner, E. F. & Sybert, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Crashworthiness analysis using advanced material models in DYNA3D

Description: As part of an electric vehicle consortium, LLNL and Kaiser Aluminum are conducting experimental and numerical studies on crashworthy aluminum spaceframe designs. They have jointly explored the effect of heat treat on crush behavior and duplicated the experimental behavior with finite-element simulations. The major technical contributions to the state of the art in numerical simulation arise from the development and use of advanced material model descriptions for LLNL`s DYNA3D code. Constitutive… more
Date: October 22, 1993
Creator: Logan, R. W.; Burger, M. J.; McMichael, L. D. & Parkinson, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Investigation of the Structural Integrity of Selected Components of the Oak Ridge Research Reactor

Description: An investigation was made to determine the structural behavior of selected components of the Oak Ridge Research Reactor for increased power level conditions. It was found that a reactor cooling water outlet temperature of 150 deg F will cause severe plastic strain cycling in the aluminum housings for the large test facilities. Increasing the reactor cooling water flow rate of 21,000 gpm will cause plastic deformations in certain reaons of the core box. These latter deformations can be tolerated… more
Date: July 22, 1960
Creator: Corum, J M; Greenstreet, B L; Maxwell, R L & Rosenthal, M W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

AEC Group Shelter

Description: As a result of atomic shelter tests and field experiments condueted over the past nine years, it has been conclusively shown that shelters provide the only promising means of civilian protection in the event of a nuclear war. Design details are presented for a group shelter to accommodate 100 persons of all age groups and both sexes. The shelter structure is a multiplate corrugated- steel arch set on a concrete slab with end walls of bridge plate sheathing. The entire structure is covered with … more
Date: June 22, 1960
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Rapid Risk-Based Evaluation of Competing Conceptual Designs

Description: In this paper, the authors have shown how a qualitative analysis can provide good input to a risk reduction design problem. Traditionally qualitative analyses such as the FMEA can be supplemented by qualitative fault trees and event trees to produce logic models of the accident sequences for the different design options. These models can be compared using rule-based manipulations of qualitative branch point probabilities. A qualitative evaluation of other considerations such as collateral safet… more
Date: August 22, 1999
Creator: Bott, T. F. & Butner, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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