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Winter Fuels Report
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1
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Carbon Sequestration on Surface Mine Lands Quarterly Report
1
Direct FuelCell/Turbine Power Plant Annual Report
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3,257 Matching Results
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INFLUENCE OF RADIATION FROM AN UNSHIELDED REACTOR ON A NATURAL MICROFLORA
The soil microflora and its respiratory activity were measured in soil cores collected at different distances from an unshielded reactor. No direct correlation was found between dose received and microbial counts or respiration. Indication of a correlation between dose and microbial respiration was obtained after eliminating the overriding influence of moisture. Radiation probably affected the soil microflora through damage to the phanerogam vegetation rather than directly. This preliminary study indicates the need to have undisturbed sampling areas close to the ORNL fast burst reactor. Extensive dosimetry, both in and above the soil, in these areas, and a program of long-term ecological descriptibn, should be started before the reactor becomes operational. (auth)
Date:
October 19, 1961
Creator:
Witkamp, M.
Object Type:
Report
System:
The UNT Digital Library
Development of improved iron Fischer-Tropsch catalysts
The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date:
July 19, 1991
Creator:
Bukur, D.B.
Object Type:
Report
System:
The UNT Digital Library
Bibliography: injection technology applicable to geothermal utilization
This bibliography cites 500 documents that may be helpful in planning, analysis, research, and development of the various aspects of injection technology in geothermal applications. These documents include results from government research; development, demonstration, and commercialization programs; selected references from the literature; symposia; references from various technical societies and installations; reference books; reviews; and other selected material. The cited references are from (1) subject searching, using indexing, storage, and retrieval information data base of the Department of Energy's Technical Information Center's on-line retrieval system, RECON; (2) searches of references from the RECON data base, of work by authors known to be active in the field of geothermal energy research and development; (3) subject and author searches by the computerized data storage and retrieval system of Chemical Abstracts, American Chemical Society, Washington, DC; and (4) selected references from texts and reviews on this subject. Each citation includes title, author, author affiliation, date of publication, and source. The citations are listed in chronological order (most recent first) in each of the subject categories for which this search was made. The RECON accession number is also given.
Date:
March 19, 1982
Creator:
Darnell, A. J. & Eichelberger, R. L.
Object Type:
Report
System:
The UNT Digital Library
Gcr-Orr Loop No. 2 Filter Tests. Part Ii
Tests of Cambridge absolute filters, Model Sl-071, specified for use in the GCR-ORR Loop No. 2 as full-flow, primary coolant fiiters were completed. kD.O.P/ (dioctylphthalate) efficiency tests were performed on three filters in the as-received condition, on two filters following canning and thermal cycling, and on one of the canned fiIters following bsking out. None of the three units met the design criteria of 99.97% efficiency for removal of 0.3 micron particles in the as-received condition. The postthermal cycle efficiencies of the canned fiIters were slightly higher than their respective as-received efficiencies. At the corapletion of testing, the two fiiters canned for installation in the reactor facility had measured efficiencies of 99.855% and 99.93%. These values were judged acceptable for the intended application/su The thermal cycling of the two canned filters and the subsequent baking out of one of these units demonstrated that a limited amount of off-gas products would be given off/su Pressure drop tests were performed on the canned fiiters with instrument air (ambient temperature, atmospheric pressure) over a flow rate range of 150 to 530 lb/hr. Curves of pressure drop across each fiIter versus Reynolds number were plotted for air and He. (auth)
Date:
February 19, 1962
Creator:
Flint, F. A. & Smith, A. M.
Object Type:
Report
System:
The UNT Digital Library
Ground wave propagation of a video pulse source: Part 2
In a previous paper we developed a simple model describing the far-field from a video-pulse source near the ground and for grazing incidence. We report here on a recent field test in which we attempted to verify the model. Our results show quantitative agreement with the model for most of the tested parameter space. We have also extended our model to include all elevation angles, including up to vertical. The computed engagement envelope shows three distinct regions: At grazing angles the field is small and diminishes to near zero at the earth's surface; at low-to moderate angles strong lobing occurs; at high angles the video-pulse field approaches its free-space form. 6 refs., 16 figs.
Date:
July 19, 1991
Creator:
Dreyer, K. A. & Buettner, H. M.
Object Type:
Report
System:
The UNT Digital Library
CERENKOV RADIATION INTENSITY CALCULATIONS FOR Sr$sup 90$ AND Co$sup 60$ IN WATER
A method for calculating Cherenkov radiation intensity from an initial electron energy distribution is presented. The Cherenkov radiation intensity from 1 curie of Sr/sup 90/ in secular equilibrium with Y/sup 90/ in water was calculated from the beta energy spectrum to illustrate the use of the method for a pure beta emitter. The Cherenkov radiation intensity from 1 curie of Co/sup 60/ in water was calculated from the Compton electron energy spectrum to illustrate the use of the method for a gamma emitter. The steps necessary to obtain the Compton electron energy spectrum from a gamma emitter are indicated. (auth)
Date:
September 19, 1961
Creator:
Wymer, R.G. & Biggers, R.E.
Object Type:
Report
System:
The UNT Digital Library
Fluidized bed incineration process design for transuranic waste
A fluidized bed incineration facility has been installed at the Rocky Flats Plant to develop and demonstrate a process for the combustion of transuranic waste. The unit's capacity is about 82 kg/hr of combustible solid waste, which is nine times higher than the rate for the operating pilot-scale unit. The facility utilizes nonaqueous, in situ neutralization of acid gases. These gases are generated during the combustion of halogen-containing materials. The low-temperature (550 /sup 0/C) operation eliminates refractory-lined equipment.
Date:
July 19, 1980
Creator:
Johnson, A. J.; Meyer, F. G.; Anderson, D. L.; Bell, B. A. & Feng, P. K.
Object Type:
Report
System:
The UNT Digital Library
Methods and calculations for regional, continental, and global dose assessments from a hypothetical fuel reprocessing facility
The Savannah River Laboratory (SRL) is coordinating an interlaboratory effort to provide, test, and use state-of-the-art methods for calculating the environmental impact to an offsite population from the normal releases of radionuclides during the routine operation of a fuel-reprocessing plant. Results of this effort are the estimated doses to regional, continental, and global populations. Estimates are based upon operation of a hypothetical reprocessing plant at a site in the southeastern United States. The hypothetical plant will reprocess fuel used at a burn rate of 30 megawatts/metric ton and a burnup of 33,000 megawatt days/metric ton. All fuel will have been cooled for at least 365 days. The plant will have a 10 metric ton/day capacity and an assumed 3000 metric ton/year (82 percent online plant operation) output. Lifetime of the plant is assumed to be 40 years.
Date:
March 19, 1978
Creator:
Schubert, J. F.; Kern, C. D.; Cooper, R. E. & Watts, J. R.
Object Type:
Article
System:
The UNT Digital Library
Attack of stainless steel type 2169 by decomposition products of TATB studied by Auger spectroscopy and ESCA
None
Date:
May 19, 1975
Creator:
Colmenares, C.; Meisenheimer, R.; Smith, R.L. & Fischer, J.W.
Object Type:
Article
System:
The UNT Digital Library
High temperature ceramic membrane reactors for coal liquid upgrading
In this project we well evaluate the performance of Sel-Gel alumina membranes in coal liquid upgrading processes under realistic temperature and pressure conditions and investigate the feasibility of using such membranes in a membrane reactor based coal liquid upgrading process. In addition, the development of novel ceramic membranes with enhanced catalytic activity for coal-liquid upgrading applications, such as carbon-coated alumina membranes, will be also investigated. (VC)
Date:
June 19, 1992
Creator:
Tsotsis, T.T.
Object Type:
Report
System:
The UNT Digital Library
Effect of strain-gage surface preparation techniques on beryllium
Beryllium is a metal sensitive to machining damage, causing a loss in mechanical properties. Since some mechanical abrading is often used in surface preparation for mounting strain gages, it is desirable to know whether the abrading produces flaws. Metallographic study of beryllium subjected to four different surface preparation methods was carried out. It was determined that the gentle abrading necessary for affixing strain gages produced a negligible density and depth of flaws and did not lower the mechanical properties. 5 figures, 2 tables.
Date:
September 19, 1977
Creator:
Hanafee, J. E.; Hughes, Jr., J. W. & McInturff, S. A.
Object Type:
Report
System:
The UNT Digital Library
Tokamak Fusion Test Reactor neutral beam injection system vacuum chamber
Most of the components of the Neutral Beam Lines of the Tokamak Fusion Test Reactor (TFTR) will be enclosed in a 50 cubic meter box-shaped vacuum chamber. The chamber will have a number of unorthodox features to accomodate both neutral beam and TFTR requirements. The design constraints, and the resulting chamber design, are presented.
Date:
October 19, 1977
Creator:
Pedrotti, L.R.
Object Type:
Article
System:
The UNT Digital Library
Nature and effects of ion-cyclotron fluctuations in TMX
In the tandem mirror experiment (TMX), coherent oscillations have been identified as resulting from the Alfven ion-cyclotron instability. Although the drive for this instability is localized in the end cell, the waves generated propagate out of the unstable region and interact with the central-cell ions. This interaction leads to an experimentally observed scaling of the stored end-cell energy with axial ion end-loss current.
Date:
February 19, 1982
Creator:
Casper, T. A.; Poulsen, P. & Smith, G. R.
Object Type:
Article
System:
The UNT Digital Library
An Evaluation of the Uranium Contamination on the Surfaces of Alclad Uranium-Aluminum Alloy Research Reactor Fuel Plates
Reported radioactivity in the Low-Intensity Test Reactor (LITR) water coolant traceable to uranium contamination on the surfaces of the alclad uranium-- aluminum plate-tyne fuel element led to an investigation to determine the sources of uranium contamination on the fuel plate surfaces. Two possible contributors to surface contamination are external sources such as rolling-mill equipment, the most obvious, and diffusion of uranium from the uranium-aluminum alloy fuel into the aluminum cladding. This diffusion is likely because of the 600 deg C heat treatments used in the conventional fabrication process. Uranium determinations based on neutron activation analysis of machined layers from fuel plate surfaces showed that rolling-mill equipment, contaminated with highly enriched uranium, was responsible for transferring as much as 180 ppm U to plate surfaces. By careful practice where cleanliness is emphasized, surface contamination can be reduced to 0.6 ppm U/sup 235/. The residue remaining on the plate surface may be accounted for by diffusion of uranium from the fuel alloy into and through the cladding of the fuel plate. Data obtained from preliminary diffusion studies permitted a good estimate to be made of the diffusion coefficient of uranium into aluminum at 600 deg C: 2.5 x 10/sup -8/ cm//sec. To …
Date:
March 19, 1962
Creator:
Beaver, R. J.; Erwin, J. H. & Mateer, R. S.
Object Type:
Report
System:
The UNT Digital Library
Ion-beam inertial fusion: the requirements posed by target and deposition physics
The demonstration of ICF scientific feasibility requires success in target design, driver development and target fabrication. Since these are interrelated, we present here some results of ion beam target studies and relate them to parameters of interest to ion accelerators. Ion deposition physics have long been a well known subject apart from high beam currents. Recent NRL experiments at up to 250 kA/cm/sup 2/ ions confirm the classical deposition physics now at current densities which are comparable to most ion targets. On the other hand, GSI data at low current density but 1 to 10 MeV/nucleon are continually being accumulated. They have yet to find anomalous results. Relying on target concepts outlined briefly, we report on the energy gain of ion-driven fusion targets as a function of input energy, ion ranges and focal spot radius. We also comment on some consequences of target gain versus driver and reactor requirements.
Date:
October 19, 1981
Creator:
Mark, J.W.K.
Object Type:
Article
System:
The UNT Digital Library
CaO interaction in the staged combustion of coal
The LIMB (limestone injection multi-stage burner) process offers special potential for reducing NO/sub x/ and SO/sub x/ by at least 50 percent in coal combustion. This is to be accomplished by adding limestone with fuel and/or air in a low NO/sub x/ burner. This program has been directed to defining the chemistry and kinetics necessary to optimize sulfur capture in LIMB combustion. More specifically, this program has attempted to clarify the role of calcium sulfide in LIMB chemistry. When limestone is added in a staged burner, there is a strong possibility that under certain circumstances CaS is produced in the reducing (fuel-rich) zone of the burner. Since CaS is more stable than CaSO/sub 4/, this affords the opportunity to (1) operate the burner at a higher temperature, 2200 to 2500 F, (2) pass the CaS rapidly through the high temperature zone (before dissociation), and (3) complete the combustion in a lean (air-rich) region where the sulfur is finally retained in CaSO/sub 4/. For these reasons this program has concentrated on the high temperature chemistry and kinetics of CaS. To achieve the program objective, the program was divided into three tasks. These involved (1) a study of CaS formation, (2) a …
Date:
December 19, 1983
Creator:
Levy, Arthur; Merryman, Earl L. & Rising, Bruce W.
Object Type:
Report
System:
The UNT Digital Library
Performance of Argus as a laser fusion facility
During the fifteen months that the Argus laser facility has been operating we have had two primary goals. These are: (1) to provide focusable, well characterized, high power beams for laser fusion experiments and (2) to further understand the propagation of high power and energy pulses. The propagation experiments have already led to increases in the laser output power and system reliability. Pulses appropriate for advanced targets are shaped to optimize the compression and heating of the target. In general they stress the laser in both limits of energy and power. In this work several results significant to the laser fusion program were realized. The neutron output of fusion targets increased by almost two orders of magnitude to more than 10/sup 9/ neutron/shot. An improved beam propagation technique (image relaying) was developed and partially implemented. It increased the focusable output power for short pulses (30-100 ps) to more than 4.0 TW. More than one kilojoule/beam was extracted from the laser in a high quality beam in a one nanosecond Gaussian pulse. A complex two step optical pulse was generated and successfully amplified to peak powers of more than 3.0 TW. The most recent of the system upgrades are complete image …
Date:
September 19, 1977
Creator:
Speck, D. R.; Simmons, W. W.; Hunt, J. T.; Boyle, M. J.; Rainer, F.; Storm, E. K. et al.
Object Type:
Article
System:
The UNT Digital Library
Project Integration Office for the electric and hybrid vehicle R and D program. Eighth progress report, March 1982
The Project Integration Office (PIO) was established to assist the US DOE with the direction and coordination of its multiple electric vehicle and hybrid electric vehicle research programs in order to get the maximum payoff from these research efforts. In addition, the PIO performs objective independent technical and economic studies, analyses and modeling, and maintains a technical information liaison service to facilitate information exchange between the program participants and industry. Progress in each of these activities is reported. (LCL)
Date:
April 19, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Ferrules seals
A device is provided for sealing an inner tube and an outer tube without excessively deforming the tubes. The device includes two ferrules which cooperate to form a vacuum-tight seal between the inner tube and outer tube and having mating surfaces such that overtightening is not possible.
Date:
June 19, 1981
Creator:
Smith, J.L.
Object Type:
Patent
System:
The UNT Digital Library
Use of x-ray imaging on laser fusion experiments
A variety of x-ray imaging techniques have been used to study the absorption, transport and implosion characteristics of exploding pusher microsphere targets irradiated with 1.06 ..mu..m light. Multichannel grazing incidence reflection microscopy, zone plate coded imaging and spatially resolved x-ray spectroscopy have observed the thermal and suprathermal x-ray emission associated with these phenomena. A second generation of x-ray imaging devices, designed for forthcoming high density implosion experiments, including axisymmetric x-ray microscopes and 1- and 2-D crystal line imaging devices, will also be briefly discussed.
Date:
September 19, 1977
Creator:
Boyle, M. J.; Attwood, D. T.; Ceglio, N. M.; Koppel, L. N.; Slivinsky, V. W.; Larsen, J. T. et al.
Object Type:
Article
System:
The UNT Digital Library
Performance of a Nova beamline with high damage threshold glass
We report on measurements made on a Nova beamline whose output amplifier stages contain new high damage threshold, platinum particle-free laser glass. We project future operating limits for the Nova ten beam amplifier system. 4 refs.
Date:
November 19, 1987
Creator:
Bibeau, C.; Ehrlich, R. B.; Lawson, J. K.; Laumann, C. W.; Pennington, D. M.; Weiland, T. L. et al.
Object Type:
Article
System:
The UNT Digital Library
Austenitic stainless steels for cryogenic service
Presently available information on austenitic Fe-Cr-Ni stainless steel plate, welds, and castings for service below 77 K are reviewed with the intent (1) of developing systematic relationships between mechanical properties, composition, microstructure, and processing, and (2) of assessing the adequacy of these data bases in the design, fabrication, and operation of engineering systems at 4 K.
Date:
September 19, 1985
Creator:
Dalder, E.N.C. & Juhas, M.C.
Object Type:
Report
System:
The UNT Digital Library
Delay line proportional chambers for the Fermilab external muon identifier
Thirty-nine one meter square proportional chambers with delay line readout were constructed for the external muon identifier of the Fermilab 15 foot bubble chamber. They provide X,Y,U(45/sup 0/) and T (avalanche time) information using a single wire plane, etched strip cathodes and nine amplifiers. They have a time resolution of +-27ns, single particle spatial resolution of +-2 to +-3mm and double particle resolution of approximately 2/sup 1///sub 2/ to 4cm. The energy accessible to each wire is limited so none of the wires in the first 25 chambers has broken since their installation in 1973 to 1974.
Date:
October 19, 1977
Creator:
Parker, S.; Orthel, J. & Marriner, J.
Object Type:
Article
System:
The UNT Digital Library
CORE REMOVAL COOLING SYSTEM-SECTION II. CORE I, SEED I. Test Results T- 641113. Section 2
A test was performed on June 19, 1959 to determine the capacity of the Core Removal Cooling System for removing reactor decay heat under split-flow'' conditions. The system operated satisfactorily during this test; the pumps developed a flow of approximates 73 gpm at a total head of 254 ft water, as compared with their rated capacity of 75 gpm at a total head of 250 ft water. (D.L.C.)
Date:
May 19, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library