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1,358 Matching Results
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Cycle 7 outage experience. [Fast Flux Test Facility (FFTF)]
The scheduled 58-day refueling outage in preparation for the seventh operating cycle of the Fast Flux Test Facility (FFTF) was successfully completed three days ahead of schedule. The planning and execution of the outage was greatly aided by Project/2 automated scheduling capabilities. For example, the use of ''maintenance windows'' and resource loading capabilities was particularly effective. The value of the planning process was demonstrated by the smooth transition into the outage phase after an early shutdown and set the stage for our best outage to date.
Date:
March 1, 1986
Creator:
Gadeken, A.D.
Object Type:
Article
System:
The UNT Digital Library
Diffractive Hard Scattering
I discuss events in high energy hadron collisions that contain a hard scattering, in the sense that very heavy quarks or high P/sub T/ jets are produced, yet are diffractive, in the sense that one of the incident hadrons is scattered with only a small energy loss. 8 refs.
Date:
March 1, 1986
Creator:
Berger, E. L.; Collins, J. C.; Soper, D. E. & Sterman, G.
Object Type:
Article
System:
The UNT Digital Library
Overweight truck shipments to nuclear waste repositories: legal, political, administrative and operational considerations
This report, prepared for the Chicago Operations Office and the Office of Civilian Radioactive Waste Management (OCRWM) of the US Department of Energy (DOE), identifies and analyzes legal, political, administrative, and operational issues that could affect an OCRWM decision to develop an overweight truck cask fleet for the commercial nuclear waste repository program. It also provides information required by DOE on vehicle size-and-weight administration and regulation, pertinent to nuclear waste shipments. Current legal-weight truck casks have a payload of one pressurized-water reactor spent fuel element or two boiling-water reactor spent fuel elements (1 PWR/2 BWR). For the requirements of the 1960s and 1970s, casks were designed with massive shielding to accommodate 6-month-old spent fuel; the gross vehicle weight was limited to 73,280 pounds. Spent fuel to be moved in the 1990s will have aged five years or more. Gross vehicle weight limitation for the Interstate highway system has been increased to 80,000 pounds. These changes allow the design of 25-ton legal-weight truck casks with payloads of 2 PWR/5 BWR. These changes may also allow the development of a 40-ton overweight truck cask with a payload of 4 PWR/10 BWR. Such overweight casks will result in significantly fewer highway shipments compared …
Date:
March 1, 1986
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Development of an x-ray framing camera
We are presently developing an ultrafast x-ray framing camera, to be used in laser fusion experiments on the NOVA facility at LLNL. The framing camera will provide high-fidelity images with frame durations of less than 100 ps. The first prototype camera will generate a single image approximately one square centimeter in area, with a spatial resolution of approx.30 microns at the image plane. Coupling the framing camera to a 22 x Wolter x-ray microscope will provide resolution at the target of approx.2 microns. The camera will be optically triggered using a laser pulse that is synchronous with the NOVA driver beams.
Date:
March 5, 1986
Creator:
Stearns, D.G.; Wiedwald, J.; Cook, B.M. & Hanks, R.
Object Type:
Article
System:
The UNT Digital Library
First events and prospects at the Fermilab collider
A brief description of the Collider Detector at Fermilab (CDF) is given including the detector components and the data acquisition system. The first test run, the first events, and the performance of the detector are discussed. Finally the prospects for future running are reviewed.
Date:
March 1, 1986
Creator:
Binkley, M.
Object Type:
Article
System:
The UNT Digital Library
Influence of quasi-elastic channels on fusion
Experiments that measure the strength of different transfer reactions in heavy reaction systems at energies in the vicinity of the Coulomb barrier are discussed. A short discussion is given of experimental techniques that are available in this field and their advantages and shortfalls. The main features of the transfer reactions are summarized. Questions concerning the system dependence and energy dependence of the strongest reaction channels are addressed. A systematic picture of the strength of the neutron transfer cross sections is presented. Some examples for correlations between fusion exchangement and transfer cross sections are given.
Date:
March 1, 1986
Creator:
Rehm, K.E.
Object Type:
Article
System:
The UNT Digital Library
Study of incomplete fusion for light heavy-ion systems using velocity distributions
Experimental results on incomplete fusion for light systems are discussed by studying the velocity distribution of fusion-like residues in the energy range of 6 to 20 MeV/nucleon. Original experimental work and results from other groups including the Hahn-Meitner Institute and the Argonne National Laboratory are also cited. Reactions between /sup 14/N, /sup 16/O, /sup 19/F, and /sup 20,22/Ne projectiles and /sup 24,26/Mg, /sup 27/Al, /sup 28/Si, /sup 40/Ca and /sup 58,60/Ni targets have been studied. 19 refs., 15 figs., 1 tab.
Date:
March 1, 1986
Creator:
Chan, Y.; Albiston, C.; Bantel, M.; Budzanowski, A.; DiGregorio, D.; Stokstad, R.G. et al.
Object Type:
Article
System:
The UNT Digital Library
Concentrations of dissolved methane (CH sub 4 ) and nitrogen (N sub 2 ) in groundwaters from the Hanford Site, Washington
This document reports all available dissolved gas concentration data for groundwaters from the Hanford Site as of June 1985. Details of the computational procedures required to reduce data obtained from the field measurements made by the Basalt Waste Isolation Project are provided in the appendix. Most measured values for methane concentration from reference repository boreholes are in the range of from 350 to 700 mg/L for the Cohassett flow top. Because of the uncertainties associated with these measurements, it is currently recommended that a conservative methane concentration of 1200 mg/L (methane saturated) in groundwater be considered the most reasonable upper-bounding value. 16 refs., 2 figs., 2 tabs.
Date:
March 14, 1986
Creator:
Early, T.O.
Object Type:
Report
System:
The UNT Digital Library
Area recommendation report for the crystalline repository project: An evaluation. [Crystalline Repository Project]
An evaluation is given of DOE's recommendation of the Elk River complex in North Carolina for siting the second repository. Twelve recommendations are made including a strong suggestion that the Cherokee Tribe appeal both through political and legal avenues for inclusion as an affected area primarily due to projected impacts upon economy and public health as a consequence of the potential for reduced tourism.
Date:
March 28, 1986
Creator:
Beck, J E; Lowe, H & Yurkovich, S P
Object Type:
Report
System:
The UNT Digital Library
Defense waste processing facility precipitate hydrolysis process
Sodium tetraphenylborate and sodium titanate are used to assist in the concentration of soluble radionuclide in the Savannah River Plant's high-level waste. In the Defense Waste Processing Facility, concentrated tetraphenylborate/sodium titanate slurry containing cesium-137, strontium-90 and traces of plutonium from the waste tank farm is hydrolyzed in the Salt Processing Cell forming organic and aqueous phases. The two phases are then separated and the organic phase is decontaminated for incineration outside the DWPF building. The aqueous phase, containing the radionuclides and less than 10% of the original organic, is blended with the insoluble radionuclides in the high-level waste sludge and is fed to the glass melter for vitrification into borosilicate glass. During the Savannah River Laboratory's development of this process, copper (II) was found to act as a catalyst during the hydrolysis reactions, which improved the organic removal and simplified the design of the reactor.
Date:
March 1, 1986
Creator:
Doherty, J P; Eibling, R E & Marek, J C
Object Type:
Article
System:
The UNT Digital Library
Johnson Controls Inc. Battery Division Annual Report, 1985: Research, Development and Demonstration of Lead-Acid Batteries for Electric Vehicle Propulsion
Report on research and development of the lead-acid battery for electric vehicle propulsion, focusing on continuing development on the forced electrolyte flow-through concept with some work on the composite, plastic/lead grid.
Date:
March 1986
Creator:
Johnson Controls, Inc. Globe Battery Division.
Object Type:
Report
System:
The UNT Digital Library
1985 Annual Site Environmental Report for Argonne National Laboratory
Report on the environmental impact of Argonne National Laboratory.
Date:
March 1986
Creator:
Golchert, N. W.; Duffy, T. L. & Sedlet, J.
Object Type:
Report
System:
The UNT Digital Library
Leakage Flow-Induced Vibration of an Unconstricted Tube-in-Tube Slip Joint
The conditions are given for which the more flexible of two cantilevered, telescoping tubes conveying fluid can be self-excited by flow leaking from an un-constricted slip joint. Also, a physical explanation of the excitation mechanism is discussed, and a design rule to avoid the mechanism is presented. In addition, the results for the un-constricted slip joint are shown to be similar to those for slip joints having annulus constrictions at very short engagement lengths.
Date:
March 1986
Creator:
Mulcahy, T. M.
Object Type:
Report
System:
The UNT Digital Library
High-School Biology, Chemistry, or Physics Learned Well in Three Weeks
Paper written by Julian C. Stanley, examining 25 young students who studied chemistry, biology, or physics over three or six weeks, and their scores on the College Board's Advanced Placement Program college-level examination in those subjects.
Date:
March 1986
Creator:
Stanley, Julian C. & Stanley, Barbara S. K.
Object Type:
Article
System:
The UNT Digital Library
Polishing Methods for Metallic and Ceramic Transmission Electron Microscopy Specimens, Rev. 1
"In recent years, the increasing sophistication of transmission electron microscope (TEM) studies of materials has necessitated more exacting methods of specimen preparation. The present report describes improved equipment and techniques for electropolishing and chemically polishing a wide variety of specimens. Many of the specimens used in developing or improving the techniques to be described were irradiated with heavy ions such as nickel or vanadium to study radiation damage. The high cost of these specimens increased the need for reproducible methods of initial preparation postirradiation processing, and final thinning for TEM examination. A technique was also developed to salvage specimens that had previously been thinned but were unusable for various reasons. Jet polishing is, in general, the method of choice for surface polishing, sectioning, and thinning. The older beaker electropolishing method is included in this report because it is inexpensive and simple, and gives some insight into how the more recent methods were developed"--NTIS abstract.
Date:
March 1986
Creator:
Kestel, B. J.
Object Type:
Report
System:
The UNT Digital Library
No hair theorem for inhomogeneous cosmologies
We show that under very general conditions any inhomogeneous cosmological model with a positive cosmological constant, that can be described in a synchronous reference system will tend asymptotically in time towards the de Sitter solution. This is shown to be relevant in the context of inflationary models as it makes inflation very weakly dependent on initial conditions. 8 refs.
Date:
March 1, 1986
Creator:
Jensen, L.G. & Stein-Schabes, J.A.
Object Type:
Report
System:
The UNT Digital Library
Wet Storage in the USA: Recent Experience and Directions
Wet storage has been the only licensed option for spent fuel management for US commercial power reactor operators, except for a period of commercial reprocessing at the Nuclear Fuel Services facility, 1965-71. Developments are underway to bring dry storage to licensed status on the US by mid-1986. However, wet storage will remain the predominant storage method, at least beyond the turn of the century. The Nuclear Waste Policy Act of 1982 establishes current US policy regarding responsibilities for spent fuel management. The Nuclear Waste Confidence Rulemaking proceedings address the viability of extended wet storage for US reactors. US utilities have moved aggressively to implement optimized utilization of wet storage technology, assisted in some areas by federal programs. This paper summarizes US policy and regulatory aspects of wet storage and the status of several wet storage technology developments, including: dense racking, double tiering, credit for burnup in rack designs, transshipment, impacts of extended burnup, rod consolidation, and pool decommissioning.
Date:
March 1, 1986
Creator:
Klein, K.; Johnson, A. B., (Jr.) & Bailey, W. J.
Object Type:
Article
System:
The UNT Digital Library
Hadronic production of J/sup PC/ = 2/sup + +/ glueballs
An OZI suppressed channel with variable mass, namely the reaction ..pi../sup -/p ..-->.. phi phi n, has been used as a filter which allows resonating gluons or glueballs to pass, while strongly rejecting conventional quark-built hadronic states. The breakdown of the OZI suppression signals a glueball. Glueball mass and particle width estimates are discussed. Reasons why g/sub T/'s have not been seen in other channels, particularly the decay of J/psi, are considered. 34 refs., 9 figs. (LEW)
Date:
March 17, 1986
Creator:
Lindenbaum, S. J.
Object Type:
Article
System:
The UNT Digital Library
Muon fluence measurements at the site boundary for 1985
Muon fluence (muons cm/sup -2/) was measured downstream of the experimental area beamlines, just beyond the Fermilab site boundary at Route 38. The purpose of these measurements was to obtain an estimate of the yearly off-site radiation exposure to the general population due to accelerator-produced muons during the 1985 800 GeV run.
Date:
March 1, 1986
Creator:
Elwyn, A.J.
Object Type:
Report
System:
The UNT Digital Library
Design of 15 mm collars for SSC dipole magnets
Ten 1-m long dipole magnets of the SSC design ''D'' cross section have been constructed and tested. In each model a collar type structure was used to contain and support the coil assembly at assembly and during operation at 4K. The collar structure must provide enough coil compression to minimize training and guarantee the coil cross section dimensions. Three types of collar designs were used. The behavior, measured and predicted, of two types of 15 mm stainless steel collars used on eight of the ten models is examined. The mechanical measurement of the 15 mm stainless steel collars used on eight 1-m dipole models are given. Observed behavior and preliminary design criteria are discussed. In order to better understand observed collar behavior and to evaluate new designs, finite element analysis of the collar designs was undertaken, and results are correlated with measured behavior. The behavior of alternate collar designs is predicted. 3 refs., 19 figs. (LEW)
Date:
March 1, 1986
Creator:
Peters, C.
Object Type:
Report
System:
The UNT Digital Library
Program to analyze the failure mode of lead-acid batteries
The electrical characteristics of large lead-acid cells from nuclear power plants were studied. The overall goal was to develop nondestructive tests to predict cell failure using this easily obtained information. Cell capacitance, internal resistance, reaction resistance for hydrogen evolution and cell capacity were measured on a lead-calcium cell in good condition. A high float voltage and low internal resistance were found to correlate with good cell capacity in cells selected from a set of six lead-antimony cells in poor condition.
Date:
March 1, 1986
Creator:
Zuckerbrod, D.
Object Type:
Report
System:
The UNT Digital Library
Fusion-fission in the /sup 16/O + /sup 40,44/Ca and /sup 32/S + /sup 24/Mg reactions
In measurements of fully-damped yields for the /sup 16/O + /sup 40,44Ca and /sup 32/S + /sup 24/Mg reactions, evidence for a fusion-fission reaction mechanism were found. The experiments were performed at the Argonne tandem-linac booster facility. Reaction products with masses 22 < A < 36 for the /sup 16/O + /sup 40,44Ca reactions and 10 < A < 28 for the /sup 32/S + /sup 24/Mg reaction were detected and identified using the time-of-flight technique. The /sup 16/O + /sup 40,44Ca reactions were measured at several center-of-mass energies from 49.5 to 62.5 MeV, while the /sup 32/S + /sup 24/Mg data were obtained at a single energy of E/sub cm/ = 60 MeV. The resulting total kinetic energies (calculated assuming two-body kinematics), angular distributions, and mass distributions of the fragments are found to be consistent with a fusion-fission reaction mechanism. An alternative explanation of the yields in terms of a deep-inelastic scattering mechanism is ruled out by the asymmetric nature of the mass distributions: the maximum cross section for the /sup 32/S + /sup 224/Mg reaction is detected in the mass 12 channel whereas the maximum cross sections for deep-inelastic scattering would be expected to occur near the target-projectile …
Date:
March 1, 1986
Creator:
Sanders, S. J.; Back, B. B.; Betts, R. R.; Dichter, B. K.; Kaufman, S.; Kovar, D. G. et al.
Object Type:
Report
System:
The UNT Digital Library
Glovebox pressure relief and check valve
This device is a combined pressure relief valve and check valve providing overpressure protection and preventing back flow into an inert atmosphere enclosure. The pressure relief is embodied by a submerged vent line in a mercury reservior, the releif pressure being a function of the submerged depth. The pressure relief can be vented into an exhaust system and the relieving pressure is only slightly influenced by the varying pressure in the exhaust system. The check valve is embodied by a ball which floats on the mercury column and contacts a seat whenever vacuum exists within the glovebox enclosure. Alternatively, the check valve is embodied by a vertical column of mercury, the maximum back pressure being a function of the height of the column of mercury.
Date:
March 17, 1986
Creator:
Blaedel, K. L.
Object Type:
Report
System:
The UNT Digital Library
Energy and Technology Review
An overview is given of research programs at a two-stage light-gas gun facility. Representative gas-gun experiments are described, and the impact of this research on other LLNL programs and on high-pressure physics work in general are discussed. Particular applications reported include: measurement of equations of state for various materials, synthesis and study of novel materials, and studies of high explosives. Specialized diagnostic techniques for gas-gun experiments are reviewed. (LEW)
Date:
March 1, 1986
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library