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Fiscal Year 2004
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ADEPT Program
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ARM Facilities Newsletter
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Downhole Power Generation and Wireless Communications for Intelligent Completions Applications, Quarterly Report
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2
Winter Fuels Report
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Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects Quarterly Report
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CO2 Capture by Absorption With Potassium Carbonate Quarterly Report
1
Chemical Processing Department Monthly Report
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Development of Continuous Solvent Extraction Processes for Coal Derived Carbon Products Quarterly Report
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Elevated-temperature benchmark tests of simply supported beams and circular plates subjected to time-varying loadings
This report presents the measured elastic-plastic-creep responses of eight simply supported type 304 stainless steel beams and circular plates that were subjected to time-varying loadings at elevated temperature. The tests were performed to provide experimental benchmark problem data suitable for assessing inelastic analysis methods and for validating computer programs. Beams and plates exhibit the essential features of inelastic structural behavior; yet they are relatively simple and the experimental results are generally easy to interpret. The stress fields are largely uniaxial in beams, while multiaxial effects are introduced in plates. The specimens tested were laterally loaded at the center and subjected to either a prescribed load or a center deflection history. The specimens were machined from a common well-characterized heat of material, and all the tests were performed at a temperature of 593/sup 0/C (1100/sup 0/F). Test results are presented in terms of the load and center deflection behaviors, which typify the overall structural behavior. Additional deflection data, as well as strain gage results and mechanical properties data for the beam and plate material, are provided in the appendices.
Date:
August 8, 1977
Creator:
Corum, J. M.; Richardson, M. & Clinard, J. A.
Object Type:
Report
System:
The UNT Digital Library
Predicting explosion-generated permeability around geothermal wells
A theoretical expression showing the radial dependence of permeability in geologic media as a function of the distance from the point of detonation has been derived. This relationship shows that created permeability decreases as a function of radius (1/r/sup 5/ around a spherical blast and 1/r/sup 4/ around a cylindrical shot). Excellent correlation was found when this prediction was compared with permeability measurements made around the site of the Hardhat nuclear event fired in granodiorite and a chemical explosive detonated in coal. (auth)
Date:
January 8, 1976
Creator:
McKee, C. R. & Hanson, M. E.
Object Type:
Article
System:
The UNT Digital Library
Certification of packagings: compliance with DOT specification 7A packaging requirements
A study was conducted to determine which of the packagings currently listed in CFR 49 Section 173.395 a.1-5, meet the Specification 7A requirements (CFR 49 Section 173.350). According to DOT HM-111 the present listing of various authorized DOT specifications in Section 173.394 and Section 173.395 (Type A containers) of ICC Tariff No. 27 would be deleted with complete reliance being placed on the use of DOT 7A, Type A general packaging specification. Each user of a Specification 7A package would be required to document and maintain on file for one year a written record of his determination of compliance with the DOT Specification 7A performance requirements. All the specification packagings listed in CFR 49 Section 173.395a.1-5 were tested and shown to meet the Specification 7A criteria; however, in many cases qualifications were placed on their use. Forty-nine specification packagings were tested and shown to meet the DOT Specification 7A performance requirements and since there were several styles of some specific packagings, this amounts to greater than 80 packagings. The extensive testing generally indicated a high degree of containment integrity in the packagings tested and the documentation discussed is a valuable tool for shippers of Type A quantities of radioactive materials. …
Date:
October 8, 1976
Creator:
Edling, D. A.
Object Type:
Report
System:
The UNT Digital Library
Hawaii technology utilization experiment
A one-year technology-transfer project involving ERDA installations and Hawaii consisted of sending teams from the Lawrence Livermore Laboratory on week-long field trips every two months to test the effectiveness of different methods of transferring technology information from federal sources to civilian clients. The team was questioned primarily on non-energy matters, and the energy questions asked related mostly to individuals or small industries. The team responed to all questions and found that a wide range of knowledge was more effective than having a sequence of experts. Hawaiians considered current major ERDA projects to be irrelevant to their needs. The team was most successful on a one-to-one basis because large groups and state agencies tend to be more policy- than action-oriented. Personal followup was considered essential. The team also learned that their visits generated ten times as many inquiries as were received unsolicited by the laboratory. Most inquiries involved biomass and use of agricultural wastes, solar energy, and transportation. An important contribution of the team's workshops was linking groups to work together on common problems. An appendix lists the subjects of queries and the names and addresses of consortium participants and Hawaiian contacts. (DCK)
Date:
December 8, 1976
Creator:
Dorn, David W. & Miller, Charles F.
Object Type:
Report
System:
The UNT Digital Library
Low-Cost Silicon Solar Array project (LSSA). Quarterly report, April 1976--June 1976
Activities and progress of the LSSA Project during April, May, and June 1976 are described. This involved the awarding of additional contracts, an evaluation and clarification of plans and working relationships with contractors, the receipt of initial technical results, and an expansion of activity in the evaluation and improvement of the solar cell modules that are included in the Project's first procurement (46 kilowatts). For the most part, the new manufacturing technology is being developed under contract by industries and universities. It includes the consideration of new silicon-refinement processes, silicon sheet-growth techniques, encapsulants, and automated-assembly production. During this report period analytical and experimental accomplishments resulted from day-to-day activities that are the early efforts of a long range plan. Thirty-one contracts have been awarded and two more are being negotiated. Five companies have delivered 20 kilowatts out of a total purchase of 46 kilowatts of ''off-the-shelf'' modules that will be used in ERDA's test and demonstration activities. The same five companies have just been awarded contracts for the purchase of 130 kilowatts of semistandardized modules at an average selling price of $15.50 per watt. (WDM)
Date:
October 8, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Age-dependent radiosensitivity of mouse oocytes
It has been shown that there are three distinct phases of radiosensitivity in oocytes of prepubertal mice: a period of rapidly increasing sensitivity between 0 and 4 days of age; a period of consistent, high sensitivity between 5 and 18 days of age; and a period of decreasing sensitivity from 19 to at least 21 days of age. Two distinct phases have been demonstrated for the rate of population decline of the oocytes of primary follicles: an initial period of rapid loss from 0 to 4 days of age; and a period of much slower loss from 5 through 23 days of age. Correlations have been drawn between the first two phases of radiosensitivity and morphological changes in the oocyte, and between the third phase of radiosensitivity and endocrinological changes in the maturing animal. The reaction of oocytes to radiation has been separated into two categories: immediate death (within 24 hours); and delayed death (over the entire lifespan of the animal). (auth)
Date:
June 8, 1976
Creator:
Koehler, C.
Object Type:
Report
System:
The UNT Digital Library
Catastrophe theory. Part I. Mathematical aspects
This reasonably self-contained report on Catastrophe Theory begins with the mathematical history of Catastrophe Theory and discusses the relation between Catastrophe Theory and the ''Catastrophe Theorem'' presented in the report. Catastrophe Theory consists of a ''local'' classification theorem for unfoldings of germ singularities, which satisfy certain conditions. The ''classification'' is a list of seven (nonsimilar) irreducible unfoldings (and their respective germs), such that the given unfolding must be reduced with index zero to exactly one of these (or to the ''constant'' unfolding of the same unfolding dimension). The Catastrophe Theorem is stated (together with background definitions and commentary) and a summary of the proof of this theorem is given. 6 tables. (RWR)
Date:
October 8, 1976
Creator:
Zaslawsky, E. G.
Object Type:
Report
System:
The UNT Digital Library
Correlation of Substructure With Mechanical Properties of Plastically Deformed Reactor Structural Materials. Progress Report, January 1, 1976--June 30, 1977
Transmission electron microscopy used to evaluate the deformation (creep, fatigue and tensile) induced microstructure of 304 SS, Incoloy 800, 330 SS and three of the experimental alloys (E19, E23 and E36) obtained from the National Alloy Program clearly shows that the relationship between the subgrain size (lambda) and the applied stress (sigma) obeys the equation lambda = Ab (sigma/E)/sup -1/ where A is a constant of the order of 4, b the Burgers rector and E is Young's modulus. Hot-hardness studies on 304 SS, 316 SS, Incoloy 800, 2 /sup 1///sub 4/ Cr-1 Mo steels, 330 SS, Inconel 718, PE-16, Inconel 706, M-813 and the above three experimental alloys suggests that reasonable effective activation energies for creep may be obtained through the use of the hardness test as a strength microprobe tool. The ordering of the strength levels obtained through hot-hardness follows quite closely that obtained in tensile tests when those data are available.
Date:
July 8, 1977
Creator:
Moteff, J.
Object Type:
Report
System:
The UNT Digital Library
Electrical conductivity and equation of state of liquid nitrogen, oxygen, benzene, and 1-butene shocked to 60 GPa
Measurements are reported for the electrical conductivity of liquid nitrogen (N/sub 2/), oxygen (O/sub 2/) and benzene (C/sub 6/H/sub 6/), and Hugoniot equation of state of liquid 1-butene (C/sub 4/H/sub 8/) under shock compressed conditions. The conductivity data span 7 x 10/sup -4/ to 7 x 10/sup 1/ ..cap omega../sup -1/cm/sup -1/ over a dynamic pressure range 18.1 to 61.5 GPa and are discussed in terms of amorphous semiconduction models which include such transport phenomena as hopping, percolation, pseudogaps, and metallization. Excellent agreement is found between the equation-of-state measurements, which span a dynamic pressure range 12.3 to 53.8 GPa, and Ree's calculated values which assume a 2-phase mixture consisting of molecular hydrogen and carbon in a dense diamond-like phase. There is a 2-1/2 fold increase in the thermal pressure contribution over a less dense, stoichiometrically equivalent liquid. 90 refs., 48 figs., 8 tabs.
Date:
October 8, 1986
Creator:
Hamilton, D. C.
Object Type:
Report
System:
The UNT Digital Library
Intense microwave pulse propagation through gas breakdown plasmas in a waveguide
High-power microwave pulse-compression techniques are used to generate 2.856 GHz pulses which are propagated in a TE/sub 10/ mode through a gas filled section of waveguide, where the pulses interact with self-generated gas-breakdown plasmas. Pulse envelopes transmitted through the plasmas, with duration varying from 2 ns to greater than 1 ..mu..s, and peak powers of a few kW to nearly 100 MW, are measured as a function of incident pulse and gas pressure for air, nitrogen, and helium. In addition, the spatial and temporal development of the optical radiation emitted by the breakdown plasmas are measured. For transmitted pulse durations greater than or equal to 100 ns, good agreement is found with both theory and existing measurements. For transmitted pulse duration as short as 2 ns (less than 10 rf cycles), a two-dimensional model is used in which the electrons in the plasma are treated as a fluid whose interactions with the microwave pulse are governed by a self-consistent set of fluid equations and Maxwell's equations for the electromagnetic field. The predictions of this model for air are compared with the experimental results over a pressure range of 0.8 torr to 300 torr. Good agreement is obtained above about 1 …
Date:
October 8, 1986
Creator:
Byrne, D. P.
Object Type:
Report
System:
The UNT Digital Library
Training scientists and engineers for the year 2000
This paper is a transcript of testimony by Alvin W. Trivelpiece, director of ORNL, before Congressional Subcommittee on Science, Technology, and Space. Dr. Trivelpiece discusses the importance of training scientist and engineers for the year 2000. (FSD)
Date:
May 8, 1990
Creator:
Trivelpiece, A. W.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of metal-foil strain gages for cryogenic application in magnetic fields
The requirement for the design and construction of large superconducting magnet systems for fusion research has raised a number of new questions regarding the properties of composite superconducting conductors. One of these, the effect of mechanical stress on the current-carrying capacity of Nb/sub 3/Sn, is of major importance in determining the feasibility of constructing large magnets with this material. A typical experiment for determining such data involves the measurement of critical current versus magnetic field while the conductor is being mechanically strained to various degrees. Techniques are well developed for the current and field measurements, but much less so for the accurate measurement of strain at liquid-helium temperature in a high magnetic field. A study was made of commercial, metal-foil strain gages for use under these conditions. The information developed can also be applied to the use of strain gages as diagnostic tools in superconducting magnets.
Date:
July 8, 1977
Creator:
Freynik, H. S. Jr.; Roach, D. R.; Deis, D. W. & Hirzel, D. G.
Object Type:
Article
System:
The UNT Digital Library
High pressure apparatus for hydrogen isotopes to pressures of 345 MPa (50,000 psi) and temperatures of 1200/sup 0/C
A functional new high pressure, high temperature apparatus for hydrogen isotopes uses an internally heated pressure vessel within a larger pressure vessel. The pressure capability is 345 MPa (50 K psi) at 1200/sup 0/C. The gas pressure inside the internal vessel is balanced with gas pressure in the external vessel. The internal vessel is attached to a closure and is also the sample container. Our design allows thin-walled internal vessel construction and keeps the sample from ''seeing'' the furnace or other extraneous environment. The sample container together with the closure can easily be removed and loaded under argon using standard glove-box procedures. The small volume of the inner vessel permits small volumes of gas to be used, thus increasing the sensitivity during pressure-volume-temperature (PVT) work.
Date:
June 8, 1977
Creator:
Lakner, J. F.
Object Type:
Article
System:
The UNT Digital Library
Natural frequency analysis of the BIPS
A dynamic model was set up to determine the fundamental frequencies of the BIPS. The model consists of a radiator which supports four discrete masses by means of interface structures. Various materials and several different sizes of interface structures were used in the analysis. The fundamental frequencies vary from 38 cps to 227 cps dependent upon the material and the size of interface structure. The built-in strength of all the interface structures are in excess of the 25 g's limit loading criteria.
Date:
April 8, 1976
Creator:
Yang, S.
Object Type:
Report
System:
The UNT Digital Library
IOS: PDP 11/45 formatted input/output task stacker and processer. [In MACRO-II]
IOS allows the programer to perform formated Input/Output at assembly language level to/from any peripheral device. It runs under DOS versions V8-O8 or V9-19, reading and writing DOS-compatible files. Additionally, IOS will run, with total transparency, in an environment with memory management enabled. Minimum hardware required is a 16K PDP 11/45, Keyboard Device, DISK (DK,DF, or DC), and Line Frequency Clock. The source language is MACRO-11 (3.3K Decimal Words).
Date:
July 8, 1974
Creator:
Koschik, J.
Object Type:
Report
System:
The UNT Digital Library
Measurements of neutron-induced fission cross-section ratios involving isotopes of uranium and plutonium. [0. 001 to 30 MeV, cross sections]
A procedure, called the threshold cross section method was applied to our experimental data involving four uranium (/sup 233/U /sup 234/U, /sup 236/U, and /sup 238/U) and five plutonium (/sup 239/Pu, /sup 240/Pu, /sup 241/Pu, /sup 242/Pu, and /sup 244/Pu) isotopes to determine ratios of fission cross sections relative to /sup 235/U. The data were gathered using ionization fission chambers and the time-of-flight technique at the LLL 100-MeV electron linear accelerator: measurements span the neutron energy range of 0.001 to 30 MeV. Experimental uncertainties common to past measurements were either eliminated or significantly reduced in this study by use of the threshold method, thereby making higher accuracies possible. The cross section ratios are absolute in the sense that they do not depend on the work of others. Results from our ratios involving /sup 233/U, /sup 235/U, /sup 238/U, and /sup 239/Pu are used to illustrate this method.
Date:
June 8, 1976
Creator:
Behrens, J. W. & Carlson, G. W.
Object Type:
Article
System:
The UNT Digital Library
Blockages in LMFBR fuel assemblies: a review of experimental and theoretical studies
This is a state-of-the-art report on the thermal-hydraulic effects of flow-channel blockages in liquid-metal fast breeder reactor (LMFBR) pin bundles. Most of the experimental and theoretical studies for simulating blockages in various prototype LMFBR fuel assemblies done in the United States and abroad through 1976 are presented and summarized. A brief summary on blockage detection is included.
Date:
August 8, 1977
Creator:
Han, J. T.
Object Type:
Report
System:
The UNT Digital Library
1/5-scale experiment of a Mark I boiling-water reactor pressure-suppression system under hypothetical LOCA conditions
Experimental results show the sensitivity of hydrodynamically generated vertical loads to changes in the drywell pressurization rate, downcomer submergence, and vent-line loss coefficient. Insignificant effects on peak vertical loads were observed when the vent-line loss was varied. Peak vertical loads can be reduced by adding initial drywell overpressure so that the downcomers are partly cleared of water. Spatial variation of pressure at about the time of vent clearing is seen in comparisons of data from locations along the axis of the toroidal wetwell.
Date:
July 8, 1977
Creator:
Pitts, J. H. & McCauley, E. W.
Object Type:
Article
System:
The UNT Digital Library
Safety Analysis Report for Packaging (SARP): ATMX-500 Railcar nuclear packaging
A Safety Analysis Report for Packaging (SARP) is described that makes available to all potential users the technical specifications and limits pertinent to the modification and use of the ATMX Railcars for which the Department of Transportation has issued Special Permit No. 5948. The SARP includes discussions of structural integrity, thermal resistance, radiation shielding and radiological safety, nuclear criticality safety, and quality control. Much of the information was previously published in a similar report. A complte physical and technical description of the package is presented. The packaging cnsists of a specially modified ATMX Series 500 Railcar loaded with DOT Specification steel drums or fiberglass coated plywood boxes. The results of the nuclear criticality safety analysis provide the maximum quantities of each fissile isotope which may be shipped as Fissile Class I in 30- and 55-gal drums. A limit of 5 g/ft/sup 3/ was established for wooden boxes. Design and development considerations regarding the packaging concept and modification of the ATMX-500 Railcar are presented. Tables, dimensional sketches, sequential photographs of the structural modifications, technical references, loading and shipping guidelines, and results of Mound Laboratory's experience in using this container are included. An internal review of this SARP was performed in compliance …
Date:
July 8, 1977
Creator:
Griffin, J. F.; Peterson, J. B.; Edling, D. A. & Blauvelt, R. K.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the human electroencephalogram with methods from nonlinear dynamics
We apply several different methods from nonlinear dynamical systems to the analysis of the degree of temporal disorder in data from human EEG. Among these are methods of geometrical reconstruction, dimensional complexity, mutual information content, and two different approaches for estimating Lyapunov characteristic exponents. We show how the naive interpretation of numerical results can lead to a considerable underestimation of the dimensional complexity. This is true even when the errors from least squares fits are small. We present more realistic error estimates and show that they seem to contain additional, important information. By applying independent methods of analysis to the same data sets for a given lead, we find that the degree of temporal disorder is minimal in a ''resting awake'' state and increases in sleep as well as in fluroxene induced general anesthesia. At the same time the statistical errors appear to decrease, which can be interpretated as a transition to a more uniform dynamical state. 29 refs., 10 figs.
Date:
September 8, 1986
Creator:
Mayer-Kress, G. & Holzfuss, J.
Object Type:
Article
System:
The UNT Digital Library
Calibration of thin film EMP sensors by AFWL Coaxial Chamber
Preliminary EMP calibration data on magnetic thin film current sensors has been obtained. The Air Force Weapon Lab's Coaxial Chamber was used as the EMP standard and a current pulse width of 40 ns was used. It was found that the sensitivity of the sensors can be increased by controlling the width of the 90/sup 0/ wall strip and that the current scales for the sensors were linear. The results strongly suggest that the dimensions of the sensors can be varied to meet different measurement requirements.
Date:
July 8, 1976
Creator:
Hsieh, E. J.; Vindelov, K. E.; Brown, T. G. & Miller, D. E.
Object Type:
Report
System:
The UNT Digital Library
Semi-automated x-ray gauging process control system. [For pressed-material components]
An x-ray gauging method was developed and a production gauging system was subsequently fabricated to control the quality of precision manufactured components. The gauging system measures via x-ray absorption the density of pressed finely divided solids held in a dissimilar container. The two dissimilar materials condition necessitated a ''two scan'' technique: first, the x-ray attenuation (absorption) of the empty container prior to loading and then, the attenuation of the loaded container are measured; that is, four variables. The system provided greatly improved product control via timely data feedback and increased product quality assurance via 100 percent inspection of product. In addition, it reduced labor costs, product cost, and possibilities for human errors.
Date:
October 8, 1976
Creator:
Draut, C. F. & Homan, D. A.
Object Type:
Article
System:
The UNT Digital Library
Mirror Hybrid Reactor Studies: July 1975--September 1976
Separate abstracts were prepared for each of the 6 included papers on mirror hybrids. (MOW)
Date:
October 8, 1976
Creator:
Lee, J. D.
Object Type:
Report
System:
The UNT Digital Library
Postirradiation examination of capsules P13R and P13S
Capsules P13R and P13S were the seventh and eighth in a series of irradiation tests conducted under the ERDA-sponsored HTGR Fuels and Core Development Program. Reference type LHTGR fuel fabricated with a broad spectrum of property and process variables was irradiated to extreme temperature and fluence conditions. Postirradiation examination revealed that the bonded fuel rods exhibited good stability after irradiation to fast neutron fluences of 12.4 x 10/sup 21/ n/cm/sup 2/ (E greater than 0.18 MeV), which is 55 percent beyond the LHTGR peak design fast neutron fluence of 8.0 x 10/sup 21/ n/cm/sup 2/. Thermal cycling to high temperatures did not adversely affect fuel rod integrity. Particle batches with coating designs representative of the design requirements envisioned for the LHTGR exhibited excellent irradiation performance. Ten batches of fissile and fertile particles were irradiated without coating failure to fast neutron exposures which exceeded the LHTGR peak design exposure by 35 to 52 percent. Capsules P13R and P13S were considered to be very successful qualification tests of LHTGR fuel components. These results provided a substantial data base for the LHTGR Fuel Product Specification and Performance Models used in HTGR core design studies, and demonstrated the excellent irradiation performance of reference LHTGR …
Date:
October 8, 1976
Creator:
Scott, C. B.; Harmon, D. P. & Holzgraf, J. F.
Object Type:
Report
System:
The UNT Digital Library