747 Matching Results

Search Results

Results: 1 - 24 next
open access

Reactor thermal-hydraulic FY 1986 status report for the multimegawatt Space Nuclear Power Program

Description: PNL's 1986 activities can be divided into three basic areas: code assessment, correlation assessment and experimental activities. The ultimate goal of all these activities is developing computer codes and verifying their use to perform the thermal-hydraulic analysis and design of the reactor core and plenum of the various proposed concepts. To perform this task as assessment is made of existing computer codes, models, correlations, and microgravity experimental data.
Date: October 1, 1986
Creator: Krotiuk, W.J. & Antoniak, Z.I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of oxygen on and in beryllium using 2 MeV helium ions

Description: Analysis of oxygen on beryllium can be routinely performed using helium-ion backscattering (RBS). However, determination of the bulk oxygen concentration by this technique is limited to about 350 atomic parts per million (appM). We have performed simultaneous RBS and particle-induced x-ray emission (PIXE) measurements to improve the detection limit for bulk oxygen. The RBS measurements allowed determination of the surface oxygen before and after in-situ sputter cleaning by argon ions in an ultr… more
Date: October 2, 1986
Creator: Musket, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Temperature control system for liquid-fed ceramic melters

Description: A temperature-feedback system has been developed for controlling electrical power to liquid-fed ceramic melters (LFCM). Software, written for a microcomputer-based data acquisition and process monitoring system, compares glass temperatures with a temperature setpoint and adjusts the electrical power accordingly. Included in the control algorithm are steps to reject failed thermocouples, spatially average the glass temperatures, smooth the averaged temperatures over time using a digital filter, … more
Date: October 1, 1986
Creator: Westsik, J. H. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Conventional magnet storage rings for x-ray lithography

Description: A first pass at the design of a conventional magnet storage ring for x-ray lithogrphy is presented. Electron beam size and power specifications are given, followed by a first pass at a lattice - a 4-fold symmetric, gradient FODO cell lattice using B = 1.6 Tesla C-magnets. (LEW)
Date: October 1, 1986
Creator: Bassetti, M.; Batchelor, K.; Galayda, J.; Halama, H.; Heese, R.; Hsieh, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical model for the dynamic resistivity of electrically-exploded conductors

Description: A detailed model for the dynamic resistivity of an exploding conductor presents many difficulties. An electrically-exploded conductor undergoes significant hydrodynamic expansion as it is heated. Resistivity is a function of both the temperature and density of a conductor and realistic models for resistivity over the range of parameter space experienced by an exploding conductor are quite complex. See for example, the model of Lee and More (1984). Calculation of the hydrodynamic expansion of th… more
Date: October 10, 1986
Creator: Lee, R. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spent Fuel Disassembly Hardware and Other Non-Fuel Bearing Components: Characterization, Disposal Cost Estimates, and Proposed Repository Acceptance Requirements

Description: There are two categories of waste considered in this report. The first is the spent fuel disassembly (SFD) hardware. This consists of the hardware remaining after the fuel pins have been removed from the fuel assembly. This includes end fittings, spacer grids, water rods (BWR) or guide tubes (PWR) as appropriate, and assorted springs, fasteners, etc. The second category is other non-fuel-bearing (NFB) components the DOE has agreed to accept for disposal, such as control rods, fuel channels, etc… more
Date: October 1, 1986
Creator: Luksic, A. T.; McKee, R. W.; Daling, P. M.; Konzek, G. J.; Ludwick, J. D. & Purcell, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Identification and evaluation of data sources for the commercial buildings retrofit market

Description: The objectives of this study are to identify data sources that provide information on current and future levels of commercial buildings retrofit activity in the US, and to evaluate the coverage these data sources provide the commercial retrofit industry. Data sources evaluated include reports, magazines, computerized data bases, and surveys. Relevant data sources were identified through a literature review and by telephone and mail contacts with building industry experts and trade associations.… more
Date: October 1, 1986
Creator: Smith, S. A. & Johnson, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bevalac operations update. No. 3

Description: Activities are reported in these areas: Bevatron operations (including a list of major experimental runs), user support at the Bevalac, modifications to the local injector, accelerator improvements at the Super HILAC, and general Bevalac upgrading. Modifications are reported for six individual beam lines. (LEW)
Date: October 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation in the SLC final focus alcoves from beam losses in collimators and dumps. Revision

Description: There are various beam line components between the interaction point (IP) of the SLC and the beam dumps which will intercept enough beam to warrant calculating the radiation levels inside the final focus alcoves. The three types of devices which are of concern are the main dump, tune-up dumps, and adjustable collimators. Fluences of and doses from neutrons and photons in the alcoves are calculated. It is concluded that if the beam losses do occur as expected, many of the electronic components i… more
Date: October 1, 1986
Creator: Jenkins, T.M. & McCall, R.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

/sup 3/He functions in tokamak-pumped laser systems

Description: /sup 3/He placed in an annular cell around a tokamak fusion generator can convert moderated fusion neutrons to energetic ions by the /sup 3/He(n,p)T reaction, and thereby excite gaseous lasants mixed with the /sup 3/He while simultaneously breeding tritium. The total /sup 3/He inventory is about 4 kg for large tokamak devices. Special configurations of toroidal-field magnets, neutron moderators and beryllium reflectors are required to permit nearly uniform neutron current into the laser cell wi… more
Date: October 1, 1986
Creator: Jassby, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Survey of immunoassay techniques for biological analysis

Description: Immunoassay is a very specific, sensitive, and widely applicable analytical technique. Recent advances in genetic engineering have led to the development of monoclonal antibodies which further improves the specificity of immunoassays. Originally, radioisotopes were used to label the antigens and antibodies used in immunoassays. However, in the last decade, numerous types of immunoassays have been developed which utilize enzymes and fluorescent dyes as labels. Given the technical, safety, health… more
Date: October 1, 1986
Creator: Burtis, C.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Compendium of the Environmental Measurements Laboratory's research projects related to the Chernobyl nuclear accident

Description: Following the accident at the Chernobyl nuclear reactor power station in the USSR on April 26, 1986, the Environmental Measurements Laboratory (EML) initiated a number of research projects as follows: (1) selected sites in both the Deposition and Surface Air networks were alerted and their sampling protocols adjusted to accommodate the anticipated arrival times and activity concentrations of the Chernobyl debris; (2) a number of cooperative programs involving field work, sampling, analysis and … more
Date: October 1, 1986
Creator: Volchok, H L & Chieco, N
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process monitoring for reprocessing plant safeguards: a summary review

Description: Process monitoring is a term typically associated with a detailed look at plant operating data to determine plant status. Process monitoring has been generally associated with operational control of plant processes. Recently, process monitoring has been given new attention for a possible role in international safeguards. International Safeguards Project Office (ISPO) Task C.59 has the goal to identify specific roles for process monitoring in international safeguards. As the preliminary effort a… more
Date: October 1, 1986
Creator: Kerr, H. T.; Ehinger, M. H.; Wachter, J. W. & Hebble, T. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Waste Management Program. Technical progress report, July-December, 1984

Description: This report provides information on operations and development programs for the management of radioactive wastes from operation of the Savannah River Plant and offplant participants. The studies on environmental and safety assessments, other support, in situ storage or disposal, waste form development and characterization, process and equipment development, and the Defense Waste Processing Facility are a part of the Long-Term Waste Management Technology Program. The following studies are report… more
Date: October 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Formal Notation for Hardware and Software Verification

Description: Some years ago a theory was published describing compilation of digital logic system build descriptions (list of behaviors for elementary components and connections between them) into recursively computable system behavior descriptions. The current work describes an analogous theory for computer programs.
Date: October 1986
Creator: Chapman, Richard O. & Gabriel, John R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Motion-Dependent Fluid Forces Acting on a Tube Row in Crossflow

Description: Motion-dependent fluid forces acting on a tube row with a pitch-to-diameter ratio of 1.35 are measured for several flow velocities and a series of oscillation frequencies. Fluid-damping and fluid-stiffness coefficients are obtained from motion-dependent fluid forces as a function of reduced flow velocity. Fluid-force coefficients agree reasonably with published data. Based on the fluid-force coefficients, the critical flow velocity and instability characteristics of tube arrays in crossflow can… more
Date: October 1986
Creator: Jendrzejczyk, J. A. & Chen, Shoei-Sheng
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ground-water monitoring compliance plan for the Hanford Site Solid Waste Landfill

Description: Washington state regulations required that solid waste landfill facilities have ground-water monitoring programs in place by May 27, 1987. This document describes the well locations, installation, characterization studies and sampling and analysis plan to be followed in implementing the ground-water monitoring program at the Hanford Site Solid Waste Landfill (SWL). It is based on Washington Administrative Code WAC 173-304-490. 11 refs., 19 figs., 4 tabs.
Date: October 1, 1986
Creator: Fruland, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Initial results from the Donner 600 crystal positron tomograph

Description: We describe a positron tomograph using a single ring of 600 close-packed 3 mm wide bismuth germanate (BGO) crystals coupled to 14 mm phototubes. The phototube preamplifier circuit derives a timing pulse from the first photoelectron, and sends it to address and coincidence circuits only if the integrated pulse height is within a pre-set window. The timing delays and pulse height windows for all 600 detectors and the coincidence timing windows are computer adjustable. An orbiting positron source … more
Date: October 1, 1986
Creator: Derenzo, S.E.; Huesman, R.H.; Cahoon, J.L.; Geyer, A.; Uber, D.; Vuletich, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of single-cutter data in the analysis of PDC bit designs

Description: A method is developed for predicting cutter forces, temperatures, and wear on PDC bits as well as integrated bit performance parameters such as weight-on-bit (WOB), drilling torque, and bit imbalance. A computer code called PDCWEAR has been developed to make this method available as a tool for general bit design. The method uses single-cutter data to provide a measure of rock drillability and employs theoretical considerations to account for interaction among closely spaced cutters on the bit. … more
Date: October 10, 1986
Creator: Glowka, D.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiation hardness and annealing tests of a custom VLSI device

Description: Several NMOS custom VLSI ( Microplex'') circuits have been irradiated with a 500 rad/hr {sup 60}Co source. With power off three of four chips tested have survived doses exceeding 1 Mrad. With power on at a 25% duty cycle, all chips tested failed at doses ranging from 10 to 130 krad. Annealing at 200{degree}C was only partially successful in restoring the chips to useful operating conditions. 10 refs., 4 figs., 1 tab.
Date: October 1, 1986
Creator: Breakstone, A.; Parker, S.; Adolphsen, C.; Litke, A.; Schwarz, A.; Turala, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A study of the effect of fabrication variables on the void content and quality of fuel plates

Description: The control of void content and quality of dispersion type fuel plates fabricated for research and test reactors are issues of concern to plate fabricators. These two variables were studied by examining the data for various geometries of fuel plates fabricated at ANL. It was found that the porosity of a fuel plate can be increased by: (1) decreasing the fuel particle size, (2) increasing the fuel particle surface roughness, (3) increasing the matrix strength, (4) decreasing the rolling temperat… more
Date: October 1, 1986
Creator: Wiencek, T.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Heber geothermal coupon analytical report: (Final technical report)

Description: The objectives of this paper are: to determine the cause of accelerated metal loss from the loading edges (as relates to brine flow) of carbon steel coupons in the low temperature portion of the Heber brine loop; and to clarify the reason for the distinctly different morphology of attack on the A53B pipe steel compared to the sheet 1018 steel. 6 figs.
Date: October 20, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantitative studies of Savannah River aquatic insects, 1959--1985

Description: As part of a long-term study of water quality patterns, scientists from the Academy of Natural Sciences have collected aquatic insects from artificial substrates placed at several stations in Savannah River. This report presents the first detailed compilation and analysis of this substantial data base, and examines patterns of variations of insect distribution and abundance (both spatial and temporal) during the last quarter century. Data on the number of individuals of various taxa found in th… more
Date: October 30, 1986
Creator: Soltis, R. (ed.); Hart, D. & Nagy, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen