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ACTL: evaluated neutron activation cross section library-evaluation techniques and reaction index. [Tables, 10/sup -10/ to 20 MeV]
A library of evaluated neutron-induced activation cross sections (ACTL) was compiled. The library covers incident neutron energies from 10/sup -10/ to 20 MeV. General descriptions of the evaluation methods and an index to the evaluated cross sections are presented. 21 references.
Date:
October 17, 1978
Creator:
Gardner, M.A. & Howerton, R.J.
Object Type:
Report
System:
The UNT Digital Library
Calculated neutron capture cross sections for the ground states and isomers of /sup 93/ /sup 94/ and /sup 95/Nb. [Resolved resonance region to 4 MeV, strength functions, statistical model]
Neutron-induced capture cross sections for the ground states and first isomeric states of /sup 93/Nb, /sup 94/Nb and /sup 95/Nb were studied from the resolved resonance region to 4 MeV via statistical model calculations. The production of isomers was included. Inelastic scattering cross sections and gamma-ray production spectra were also calculated. The anti GAMMA/ sub ..gamma..//D ratios were derived from gamma-ray strength function systematics. Total capture cross sections on the ground states are found to be within a factor of two of each other. Capture cross sections on the isomeric targets are important as well, not only because of their magnitude but also because of the significant population of these isomeric levels by inelastic scattering. 10 references.
Date:
September 1, 1978
Creator:
Gardner, M. A. & Gardner, D. G.
Object Type:
Article
System:
The UNT Digital Library
Sandia Energy Titles
The bibliography of energy-related publications produced by Sandia authors is arranged in broad subject category order. Subjects included are conservation, drilling technology, energy (general), environment and safety, fossil energy, geothermal energy, nuclear energy, and solar energy.
Date:
August 1, 1978
Creator:
Gardner, John L.
Object Type:
Report
System:
The UNT Digital Library
Development and initial characterization of amorphous metals rich in W and/or RE
Studies of refractory metal alloys concentrated on two families of such alloys: ternary tungsten alloys and binary T/sub 5/-T/sub 9/ alloys. The former were selected because of the possibility of finding desirable glasses consisting of low-cost components; the latter were chosen because they could be quenched into metallic glasses with high thermal stability and good toughness. Alloys selected for study were prepared by arc-melting and were subsequently rapidly quenched in an arc furnace quenching unit. Considerable difficulties were encountered in preparing metal--metalloid alloys, such as W--B, as well as alloys combining high melting and low melting transition metals, such as W and Ni. Brittleness of ductility as revealed by a bend test was noted. Measurements were made up to 1000 K and resistivity measurements up to 1300 K. The probe for electrical resistivity measurements at high temperatures has been constructed and tested. To determine the elastic (Young's) moduli of new metallic glasses prepared in this program, equipment utilizing the pulse--echo method was set up.
Date:
January 1, 1978
Creator:
Giessen, B. C. & Polk, D. E.
Object Type:
Report
System:
The UNT Digital Library
Neutron capture cross sections for unstable nuclei in the mass 90 region derived from proton capture measurements. [Strength functions]
Experimental measurements were made of the production cross sections and energy distributions of gamma rays emitted when the stable targets /sup 88/Sr, /sup 89/Y and /sup 90/Zr are exposed to protons in the energy range 3 to 8 MeV. The data are being analyzed using a recent version of the Uhl statistical model code. One conclusion is that while the gamma-ray strength functions employed reproduce the proton capture cross sections, they do not achieve the same degree of hardness observed in the measured spectra. To do so, their lower energy regions must be modified; such changes, however, do not affect the capture cross sections. 7 references.
Date:
September 1, 1978
Creator:
Gardner, D. G.; Dietrich, F. S. & Heikkinen, D. W.
Object Type:
Article
System:
The UNT Digital Library
Photogeologic Interpretation of the Baltazor-McGee Geothermal Prospects, Humboldt County, Nevada
GeothermEx, Inc. was asked by Earth Power Corporation in October 1977 to perform a photogeologic study of the Baltazor and McGee geothermal prospects, northern Humboldt County, Nevada and southern Harney County, Oregon (figure 1), as a means of evaluating the geothermal reservoir and heat source at these prospects. Work began in October and was completed in December 1977. It included a brief field reconnaissance, to clarify particular points. This report summarizes findings and offers interpretations of structural features, stratigraphy, recent tectonic events, and subsurface conditions.
Date:
February 1, 1978
Creator:
Gardner, Murray C. & Koenig, James B.
Object Type:
Report
System:
The UNT Digital Library
Optically coupled high voltage isolation amplifier
A common and persistent problem in modern instrumentation is the observation and recording of small signal waveforms that are removed from ground by very high voltages. Examples of this are the instrumentation of neutral particle injectors used in controlled thermonuclear research and the construction of safety breaks for air core toroidal devices. To overcome this problem a very high voltage isolation amplifier was designed. It employs analog-to-digital conversion with serial data transmission on a fiber optic cable.
Date:
February 1, 1978
Creator:
Pearce, J.W.
Object Type:
Report
System:
The UNT Digital Library
LOFT pressurizer pressure relief piping system stress analysis and fatigue life report
A stress analysis was performed on the LOFT Pressurizer Pressure Relief System to determine if it met the requirements of the ASME Boiler and Pressure Vessel Code, Section III, 1974 Edition, for Class 1 and Class 2 components. Deadweight, thermal expansion, seismic, design LOCE, and LOCA loads were considered. The results of this analysis indicate that the LOFT pressurizer pressure relief system will comply with Code specifications provided modifications are made to the hanger support configuration and one small section of pipe. The recommended changes are listed below. Note that some of these hangers were previously required based upon an analysis which subjected this same piping system to a reduced LOCE (20 millisecond valve opening). (1) Addition of Snubbers as per letter HIK-12-75, LOFT Pipe Hanger Requirements on Main Feed Main Steam Pressurizer and ECC Systems. (2) The 1/2'' Line 1/2''-PCS-10 between the tee and CVP-136-19 must be increased in diameter to 1.050 inches (OD of nominal 3/4'' pipe). (3) Modification of Unibals and flat bars as per letter Muff-2-76, required change of flat bar hangers and unibals on pressure relief and pressurizing piping. 9 refs., 6 figs., 1 tab.
Date:
January 19, 1978
Creator:
Muffett, J.W.
Object Type:
Report
System:
The UNT Digital Library
Nonoxide ceramic interactions with uranium or carbon. [Reaction of BN, TiN, HfC, CeS, or Ce2S3 with U, C, BeO, W, or Y2O3]
The interaction of possible nonoxide containment materials (including boron nitride, titanium nitride, hafnium carbide, and two cerium sulfides) with uranium or carbon has been examined by thermal analysis techniques. Additionally, nonoxide-ceramic interaction with beryllia, tungsten, or yttria was investigated. Hafnium carbide is the least reactive nonoxide ceramic tested.
Date:
October 16, 1978
Creator:
Holcombe, C.E.
Object Type:
Article
System:
The UNT Digital Library
LOFT CIS Analysis Penetration S-7A 8'' WW - 172-AB.
None
Date:
November 13, 1978
Creator:
Barry, Jr., W. J.
Object Type:
Report
System:
The UNT Digital Library
LOFT CIS Analysis S-5B Penetration 3" IA-296-AB.
Abstract: The 3" IA-296-AB line from the containment penetration S-5B was analyzed to ASME Code, Subsection NC (Class 2) criteria. This section of piping is part of the Containment Isolation System; the model considered the line from penetration S-5B outward through a series of elbows and through the third isolation valve. Results of this analysis show that the section of line described will meet Class 2 requirements if additional supports are installed at three locations, as described in the body of this report.
Date:
October 31, 1978
Creator:
Barry, W. J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Interpretation of geology, geophysics and hydrochemistry for selection of geothermal drilling sites, Canon de San Diego Grant, Sandoval county, New Mexico
This project began in mid-1977 as an evaluation of the geology and hydrogeology of the Canon de San Diego Grant for Sunoco Energy Development Co. (Sunedco) and evolved late in 1977, at Sunedco's direction, into a more comprehensive study of geophysical, geologic and hydrogeochemical data. This has been used to select sites for the possible drilling of deep geothermal wells.
Date:
November 1, 1978
Creator:
Koenig, J. B.; McIntyre, J. R.; Klein, C. W. & Beyer, J. H.
Object Type:
Report
System:
The UNT Digital Library
Levels of chemical contaminants in nonoccupationally exposed U. S. residents
Data are presented on the levels of all chemical contaminants resulting from environmental pollution which have been found in human tissues including blood, urine, breast milk, and tissue samples obtained at autopsy. Most data results from specific surveys to determine health hazards. The roles of trace elements and recognition of the need to determine baseline levels of chemicals introduced into the environment are factors which have motivated surveys by individual investigators. Thus, most data on chemicals in human tissues record levels of pesticides (e.g., DDT and metabolites), levels of trace metals such as lead, cadmium, and mercury, or levels of nutritionally essential elements such as zinc, copper, manganese, and fluoride. Data available on iron and calcium are not presented as their presence in the environment is generally not considered hazardous. Data on several uncommon chemicals, such as indium and ytterbium, are included basically as items of interest and to further document their presence in healthy individuals. Baseline data were presented where available to provide perspective as to chemical levels which might be expected under conditions where exposure could be considered normal or not directly related to a pollutant source. Nearly 600 cited surveys or investigations, most of which were reported …
Date:
August 1, 1978
Creator:
Holleman, J.W. & Hammons, A.S.
Object Type:
Report
System:
The UNT Digital Library
LMFBR safety. 6. Review of current issues and bibliography of literature (1977)
This report discusses the current status of liquid-metal fast breeder reactor (LMFBR) development. Selected bibliographic information on LMFBRs relative to the development and safety of the breeder reactor is presented for the year 1977. The bibliography consists of approximately 198 abstracts covering research and development, operating experience, and design practices. Keyword, author, and permuted-title indexes are included for completeness.
Date:
July 13, 1978
Creator:
Buchanan, J.R. & Keilholtz, G.W.
Object Type:
Report
System:
The UNT Digital Library
Remeasurement of permanent vegetation plots in the Great Smoky Mountains National Park, Tennessee, USA, and the implications of climatic changes on vegetation. Environmental Sciences Division publication No. 1111
This report summarizes field work over two summers (1976 and 1977) to relocate, monument and reinventory permanent vegetation plots in the Great Smoky Mountains National Park. These plots were first established by the senior author and R.H. Whittaker in 1959-62. The inventory results are discussed in terms of vegetation changes in high-altitudinal forest ecosystems, in particular the spruce-fir forests, and the factors, climate shift and biotic and abiotic agents, bringing about vegetation change. A second aspect of the report summarizes experience and offers recommendations for establishment of permanent vegetation plots for the purpose of providing a monitoring tool with which to measure long-term ecological change.
Date:
March 1, 1978
Creator:
Becking, R. W. & Olson, J. S.
Object Type:
Report
System:
The UNT Digital Library
Methodology for Identifying Materials Constraints to Implementation of Solar Energy Technologies
A materials assessment methodology for identifying specific critical material requirements that could hinder the implementation of solar energy has been developed and demonstrated. The methodology involves an initial screening process, followed by a more detailed materials assessment. The detailed assessment considers such materials concerns and constraints as: process and production constraints, reserve and resource limitations, lack of alternative supply sources, geopolitical problems, environmental and energy concerns, time constraints, and economic constraints. Data for 55 bulk and 53 raw materials are currently available on the data base. These materials are required in the example photovoltaic systems. One photovoltaic system and thirteen photovoltaic cells, ten solar heating and cooling systems, and two agricultural and industrial process heat systems have been characterized to define their engineering and bulk material requirements.
Date:
July 1978
Creator:
Litchfield, J. W.; Watts, R. L.; Gurwell, W. E.; Hartley, J. N. & Bloomster, C. H.
Object Type:
Report
System:
The UNT Digital Library
Survey of industrial coal conversion equipment capabilities: rotating components
At the request of the Major Facilities Project Management Division of the Energy Research and Development Administration, Fossil Energy Division, a study was undertaken to determine the capabilities of U.S. industry to supply the rotating equipment needed for future coal conversion facilities. Furthermore, problem areas were to be identified and research and development needs determined for producing advanced designs of the required equipment: Pumps, compressors, hydraulic turbines, and gas expanders. It has been concluded that equipment for essentially all clean-stream applications likely to be encountered in coal conversion facilities is generally available except high-pressure oxygen compressors. These oxygen compressors as well as slurry pumps need to be developed or significantly upgraded. Also, fans and blower for dirty-gas streams need developmental work, as do expanders for high-temperature service. Hydraulic turbines, which were not specified but which might be used for slurry applications in future coal conversion plants, are not available.
Date:
April 1, 1978
Creator:
Williams, W. R.; Horton, J. R.; Boudreau, W. F. & Siman-Tov, M.
Object Type:
Report
System:
The UNT Digital Library
Hydrographic Observations Off Savannah and Brunswick, Georgia, March, May and September 1977 and January 1978
Seasonal onshore-offshore sections were run in March, May and September 1977 and January 1978 off Savannah and Brunswick, Georgia. In each instance upwelling was observed at the shelf break with significant nutrient fluxes into the surface and/or shelf waters. There are indications that eddies may have been responsible for some of these observations.
Date:
January 1, 1978
Creator:
Singer, J. J.; Atkinson, L. P.; Chandler, W. S. & Bishop, S. S.
Object Type:
Report
System:
The UNT Digital Library
Scope of Work for Evaluating the Mechanical Performance of EPR First Wall Coatings
An outline is presented for a proposed scope of work to evaluate the mechanical performance of candidate first wall coatings for a Tokamak-type fusion reactor. The goal of the overall program is to provide an adequate coating material and recoating process which can be manufactured by currently available vendors.
Date:
January 1, 1978
Creator:
Jones, W. B. & Van den Avyle, J. A.
Object Type:
Report
System:
The UNT Digital Library
Development of a large electrically driven flyer system for explosive initiation studies
An experimental study to develop an electrically driven flyer system for explosive initiation studies is described. Both pulsed laser stereophotography and streak camera studies have been used to determine a foil/land/flyer geometry that will give sufficiently planar flyers for quantitative explosive initiation studies. A shot assembly with explosive wedges 6.4-mm diam and 20 to 30/sup 0/ angles has been designed to study run distances to detonation from 0.5 mm to 2.0 mm. Preliminary results are given for 1.8-g/cm/sup 3/ superfine TATB.
Date:
January 1, 1978
Creator:
Seitz, W.L.; Schmidt, S.C. & Wackerle, J.
Object Type:
Article
System:
The UNT Digital Library
User's manual for the BNW-II optimization code for dry/wet-cooled power plants
The User's Manual describes how to operate BNW-II, a computer code developed by the Pacific Northwest Laboratory (PNL) as a part of its activities under the Department of Energy (DOE) Dry Cooling Enhancement Program. The computer program offers a comprehensive method of evaluating the cost savings potential of dry/wet-cooled heat rejection systems. Going beyond simple ''figure-of-merit'' cooling tower optimization, this method includes such items as the cost of annual replacement capacity, and the optimum split between plant scale-up and replacement capacity, as well as the purchase and operating costs of all major heat rejection components. Hence the BNW-II code is a useful tool for determining potential cost savings of new dry/wet surfaces, new piping, or other components as part of an optimized system for a dry/wet-cooled plant.
Date:
May 1, 1978
Creator:
Braun, D. J.; Bamberger, J. A.; Braun, D. J.; Faletti, D. W. & Wiles, L. E.
Object Type:
Report
System:
The UNT Digital Library
Measurement of soil properties in-situ. Present methods: their applicability and potential
The measurement of soil properties in-situ offers the advantages of minimal disturbance, retention of the in-situ state of stress, temperature, chemical, and biological environments, and cost effectiveness relative to many types of laboratory tests for evaluation of undisturbed soil properties. This report is concerned with techniques for in-situ measurement of permeability, strength, stress-deformation properties, and volume change properties; property classes which are of interest in most geotechnical engineering problems. Emphasis is on test concepts, data analysis and interpretation, and advantages and limitations of methods, as opposed to details of apparatus and procedure.
Date:
March 1, 1978
Creator:
Mitchell, J.K.; Guzikowski, F. & Villet, W.C.B.
Object Type:
Report
System:
The UNT Digital Library
Drift tube beam blocking experiments performed on the ORNL/PLT neutral beam line at the ORNL medium energy test facility
The Fusion Energy Division of the Oak Ridge National Laboratory (ORNL) in cooperation with the Princeton Plasma Physics Laboratory (PPPL) designed, constructed, and tested four high power neutral beam injectors for application on the Princeton Large Torus (PLT). This system employs a modified duoPIGatron ion source which has produced ion beams with parameters up to 70 A, 45 keV, and 500 msec. Nominal extraction parameters were 60-A, 40-keV, and 300-msec pulses, simultaneously. Neutral power up to 750 kW for 100 msec was calorimetrically measured on a simulated PLT target behind a PLT-sized aperture of 20 x 25 cm located at 4.10 m. Initial performance of these beam lines on PLT was near these parameters. Calorimetric measurements of beam power delivered to the PLT torus with a 3.65-m beam line length and with 100-msec full power pulses indicate a 10 to 15% reionization loss when the beam line pulse is synchronized to the pulsed torus magnetic fields. Data taken at ORNL are presented to show that this power loss is approximately equal to that calculated on drift tube pressure measurements taken without drift tube magnetic fields.
Date:
July 1, 1978
Creator:
Dagenhart, W. K.; Blue, C. W.; Haselton, H. H.; Menon, M. M.; Schwenterly, S. W.; Stirling, W. L. et al.
Object Type:
Report
System:
The UNT Digital Library
Description and cost analysis of a deluge dry/wet cooling system.
The use of combined dry/wet cooling systems for large base-load power plants offers the potential for significant water savings as compared to evaporatively cooled power plants and significant cost savings in comparison to dry cooled power plants. The results of a detailed engineering and cost study of one type of dry/wet cooling system are described. In the ''deluge'' dry/wet cooling method, a finned-tube heat exchanger is designed to operate in the dry mode up to a given ambient temperature. To avoid the degradation of performance for higher ambient temperatures, water (the delugeate) is distributed over a portion of the heat exchanger surface to enhance the cooling process by evaporation. The deluge system used in this study is termed the HOETERV system. The HOETERV deluge system uses a horizontal-tube, vertical-plate-finned heat exchanger. The delugeate is distributed at the top of the heat exchanger and is allowed to fall by gravity in a thin film on the face of the plate fin. Ammonia is used as the indirect heat transfer medium between the turbine exhaust steam and the ambient air. Steam is condensed by boiling ammonia in a condenser/reboiler. The ammonia is condensed in the heat exchanger by inducing airflow over the …
Date:
June 1, 1978
Creator:
Wiles, L. E.; Bamberger, J. A.; Braun, D. J.; Faletti, D. W. & Willingham, C. E.
Object Type:
Report
System:
The UNT Digital Library