1,043 Matching Results

Search Results

Advanced search parameters have been applied.

Electrical Testing of the Full-Scale model of the NSTX HHFW Antenna Array

Description: The 30 MHz high harmonic fast wave (HHFW) antenna array for NSTX consists of 12 current straps, evenly spaced in the toroidal direction. Each pair of straps is connected as a half-wave resonant loop and will be driven by one transmitter, allowing rapid phase shift between transmitters. A decoupling network using shunt stub tuners has been designed to compensate for the mutual inductive coupling between adjacent current straps, effectively isolating the six transmitters from one another. One half of the array, consisting of six full-scale current strap modules, three shunt stub decouplers, and powered by three phase-adjustable rf amplifiers had been built for electrical testing at ORNL. Low power testing includes electrical characterization of the straps, operation and performance of the decoupler system, and mapping of the rf fields in three dimensions.
Date: April 12, 1999
Creator: Fadnek, A.; Ryan, P. M.; Sparks, D. O.; Swain, D. W. & Wilgen, J. B.
Partner: UNT Libraries Government Documents Department

1-1/2-Loop Semiscale Isothermal Test Program: Program and System Description in Support of Experiment Data Reports.

Description: The isothermal test series is part of the Semiscale Blowdown and Emergency Core Cooling (ECC) Project conducted by Aerojet Nuclear Company for the U. S. Atomic Energy Commission. The test series consisted of ten blowdown tests and five hot-wall tests with emphasis on emergency core coolant delivery. The blowdown tests were conducted to investigate the effects of lower plenum geometry, heat transfer configuration, ECC injection location, downcomer gap size, and break size.
Date: February 1, 1974
Creator: Aerojet Nuclear Company
Partner: UNT Libraries Government Documents Department

Hydraulic and Heat Transfer Transients During Power Ramp - Mark VII-AL Tests at Columbia University

Description: Transient tests were run at Columbia University on a Mark VII-AL mockup to reproduce the hydraulics and heat transfer in a single fuel assembly during a power ramp resulting from the accidental withdrawal of control rods from a reactor. This document presents results of those tests.
Date: January 6, 2003
Creator: Durant, W.S.
Partner: UNT Libraries Government Documents Department

Anthropometry for WorldSID, a World-Harmonized Midsize Male Side Impact Crash Dummy

Description: The WorldSID project is a global effort to design a new generation side impact crash test dummy under the direction of the International Organization for Standardization (ISO). The first WorldSID crash dummy will represent a world-harmonized mid-size adult male. This paper discusses the research and rationale undertaken to define the anthropometry of a world standard midsize male in the typical automotive seated posture. Various anthropometry databases are compared region by region and in terms of the key dimensions needed for crash dummy design. The Anthropometry for Motor Vehicle Occupants (AMVO) dataset, as established by the University of Michigan Transportation Research Institute (UMTRI), is selected as the basis for the WorldSID mid-size male, updated to include revisions to the pelvis bone location. The proposed mass of the dummy is 77.3kg with full arms. The rationale for the selected mass is discussed. The joint location and surface landmark database is appended to this paper.
Date: June 19, 2000
Creator: Moss, S.; Wang, Z.; Salloum, M.; Reed, M.; Ratingen, M. Van; Cesari, D. et al.
Partner: UNT Libraries Government Documents Department

Air Bag Parameter Study with Out-Of-Position Small Female Test Devices

Description: The development of the Advanced Restraint System has lead to an innovative way in which we evaluate the systems effect on the occupant. This paper presents some initial investigation into the driver airbag system that consists of an inflator, cushion fold, tear seam pattern, and offset of the airbag cover to steering wheel rim plane. An initial DOE is reviewed to establish significant parameters and to identify equations for further investigation.
Date: June 19, 2000
Creator: Short, Chris & Kozak, Steve
Partner: UNT Libraries Government Documents Department

Equipment design guidelines for remote hot cell operations.

Description: Hot cells provide a unique and challenging environment for designing remotely operated equipment. A typical hot cell is an isolated room used to protect operators from highly contaminated and radioactive equipment. Hot cells usually have thick reinforced concrete walk and leaded glass windows. Operations within the hot cell are accomplished using master-slave manipulators and overhead crane or electro-mechanical manipulator systems. The inability to perform hands-on operation and maintenance in hot cells requires special design considerations. Some of these design considerations include operational interfaces, radiation, accessibility, replaceability/interchangeability, decontamination, atmospheric conditions, functionality, operator fatigue, and ease of use. This paper will discuss guidelines for designing hot cell remotely operated equipment that has been used successfully at Argonne National Laboratory. General topics in this paper will include master-slave manipulator types and limitations, overhead handling systems, viewing limitations, types and sizes of typical fasteners, hot cell compatible materials, mockup testing, guide features for mating parts, modularity, labeling, electrical fasteners, and lifting fixtures.
Date: July 10, 1998
Creator: Wahlquist, D. R.
Partner: UNT Libraries Government Documents Department

Probability of Potential Multi-Canister Overpack Loading System Drop of Proof Load in the K West Basin South Loadout Pit

Description: This document presents the results of a probabilistic analysis of the potential for load drop during the load test of the K West Basin South Loadout Pit Gantry. The calculations are in support of the cask loading system (CLS) subproject load test of the gantry. The purpose of this calculation note is to document the probabilistic calculation of the per lift potential for drop of a test load by the Multi-Canister Overpack (MCO) Loading System (MLS) during load testing at the K West Basin south loadout pit. The MLS subproject needs to load test the MLS in the K West Basin south loadout pit. To perform this test, a basket mockup weighing approximately 4,500 lb (125% of a fully loaded MCO basket accounting for water displacement) needs to be used for one or more load tests. The test load will comprise a standard basket lifting attachment with several ring-shaped steel segments to provide the required weight. The test load will exceed the K Basin Safety Analysis Report (WHC-SD-WM-SAR-062) (SAR) allowances for load drop in the K West Basin south loadout pit. This probabilistic calculation will be used as part of the basis for seeking U.S. Department of Energy approval to use an MLS test weight that exceeds SAR allowances.
Date: January 20, 2000
Creator: SHULTZ, M.V.
Partner: UNT Libraries Government Documents Department

CRITICAL STUDIES OF A 450-LITER URANIUM OXIDE FAST REACTOR CORE (ZPR-III ASSEMBLY 29)

Description: Results of studies with ZPR-IH Assembly 29, a mockup of a typical, dilute UO/sub 2-/-fueled fast reactor, are reported. The assembly consisted of a 454-liter cylindrical core, blanketed with depleted uranium, with a critical mass of 42l kg U/sup 235/. Experimnents included measurements of fission rates, material reactivity worths, and Rossi alpha. The results of multigroup calculations using the present Argonne cross-section sets are presented, and discrepancies between experimental results and calculations are discussed. (auth)
Date: November 1, 1960
Creator: Hess, A.L.; Gemmell, W.; Long, J.K. & McVean, R.L.
Partner: UNT Libraries Government Documents Department

A FLOW VISUALIZATION LOOP FOR FLOW PATTERN STUDIES IN REACTOR MODELS

Description: The installation of a milling yellow flow visualization loop has been completed. Milling yellow is an organic dye which when dissolved in water exhibits flow double refracting properties that permit visual observations of flow patterns. The equipment is to be used in qualitative studies of flow patterns in various models of reactor vessels and components. (auth)
Date: August 1, 1958
Creator: Mixon, W.R. & MacColl, H.A.
Partner: UNT Libraries Government Documents Department

Small-angle Compton Scattering to Determine the Depth of a Radioactive Source in Matter

Description: A gamma-ray peak in a spectrum is often accompanied by a discontinuity in the Compton continuum at the peak. The Compton continuum results from Compton scattering in the detector. The discontinuity at a peak results from small-angle Compton scattering by the gamma rays in matter situated directly between the gamma-ray source and the detector. The magnitude of this discontinuity with respect to the gamma-ray peak is therefore an indicator of the amount of material or shielding between the gamma-ray source and the detector. This small-angle scattering was used to determine the depth of highly-enriched uranium (HEU) solution standards in a concrete floor mockup. The empirical results of the use of this small-angle scattering discontinuity in a concrete floor experiment will be described. A Monte Carlo calculation of the experiment will also be described. In addition, the depth determined from small-angle scattering was used in conjunction with differential attenuation to more accurately measure the uranium content of the mockup. Following these empirical results, the theory of small-angle scattering will be discussed. The magnitude of the discontinuity compared to the peak count rate is directly related to the depth of the gamma-ray source in matter. This relation can be described by relatively simple mathematical expressions. This is the first instance that we are aware of in which the small-angle Compton scattering has been used to determine the depth of a radioactive source. Furthermore this is the first development of the theoretical expressions for the magnitude of the small-angle scattering discontinuity.
Date: April 1, 2011
Creator: Oberer, R. B.; Gunn, C. A.; Chiang, L. G.; Valiga, R. E. & Cantrell, J. A.
Partner: UNT Libraries Government Documents Department

REDUCTION OF VAPOR CARRY-UNDER IN SIMULATED BOILING

Description: The effect on vapor carryunder in simulated boiling caused by insertion in the flow stream of several different geometric configurations and sizes of wire screens is described. The effect on vapor carryunder caused by screen location and mesh size is shown to be closely related to other system variables. The relationship among the most significant variables is shown in a series of graphs. Significant reduction of vapor carryunder is achieved under certain conditions. (auth)
Date: February 1, 1963
Creator: Miller, P.L. & Armstrong, C.P.
Partner: UNT Libraries Government Documents Department

Test of Heater and Cooler Concepts for GCR-ORR Loop, Design 4

Description: High heat flux electrical cartridge heaters were tested with direct air cooling under simulated ORR Loop conditions. The cartridges and the heater design were found to be satisfactory. A gas cooler of concentric pipe design utilizing air, water, and air-water mixtures as the coolant was also evaluated and found to be satisfactory. Heat transfer calculations are compared with the experimental data and found to correlate within 10%. (auth)
Date: July 13, 1959
Creator: Kelley, W. H., Jr. & Storto, E.
Partner: UNT Libraries Government Documents Department