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213,269 Matching Results

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Aerodynamic Re-Entry Analysis. Task 2. Thermoelectric Generator Summary Report (open access)

Aerodynamic Re-Entry Analysis. Task 2. Thermoelectric Generator Summary Report

An analytical trajectory and aerothermodynamic analysis of a satellite containing a Task 2 thermoelectric generator was completed. A 300-statute mile circular polar orbit was used for this analysis and the launch was assumed to be from Vandenberg Air Force Base. Results of this study show that upon natural decay from a successful mission, the radio-cerium fuel will burn up in space at high altitude, thus only a very minor amount of radio cerium will be released to the stratosphere. A complete analyses of the fate of the radio-cerium fuel following various aborted launching attempts also was carried out. Charts summarizing the various assumed failures and locations of the fuel following failure are shown. A technical discussion of the methods used in performing the analysis is included in the report. (auth)
Date: December 27, 1960
Creator: Oehrli, R.
Object Type: Report
System: The UNT Digital Library
Enhanced oil recovery by CO/sub 2/ foam flooding. Annual report, October 1, 1982-September 30, 1983 (open access)

Enhanced oil recovery by CO/sub 2/ foam flooding. Annual report, October 1, 1982-September 30, 1983

The objective is to identify commercially available additives which are effective in reducing the mobility of carbon dioxide, CO/sub 2/, thereby improving its efficiency in the recovery of tertiary oil, and which are low enough in cost to be economically attractive. During the past year significant progress has been made in developing a commercial method of reducing the mobility of carbon dioxide in enhanced oil recovery processes. Four basic chemical structures, listed below, appear to show most promise for gas mobility control: (1) ethoxylated adducts of C/sub 8/ - C/sub 14/ linear alcohols; (2) sulfate esters of ethoxylated C/sub 9/ - C/sub 16/ linear alcohols; (3) low molecular weight co-polymers of ethylene oxide and propylene oxide; and (4) synthetic organic sulfonates. With the exception of the sulfonates, the above types are compatible with normal oil field brines, unaffected by the presence of crude oil and stable under conditions common in a petroleum reservoir. The second significant result during the year involves identification of several sulfonate structures that have high potential for mobility control for carbon dioxide. Commercial sulfonate additives are available that appear optimum for reservoirs where freshwater will be used to inject the surfactant solution. They can also be …
Date: December 22, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Comparative assessment of energy-economy interactions (open access)

Comparative assessment of energy-economy interactions

This analysis is concerned with the impact of energy-policy measures on the level, growth, and structure of the US economy. In particular, the nature and magnitude of the causal relationship between variations in the prices of various energy forms and economic performance, as measured by real gross national product (GNP), is studied. The combined Brookhaven National Laboratory/Dale W. Jorgenson Associates (BNL/DHA) energy-economy model system is used to determine the economic effects of three energy-price futures combined with an invariant set of energy policies. The price alternatives are intended to characterize the uncertainty that exists in the policy-planning environment. In addition, the results are compared to those obtained from another DOE-sponsored analysis which used the Data Resources, Incorporated (DRI) quarterly macroeconomic model to assess the effects of these same three cases. Significant numerical differences in the results from these modeling systems are observed and are attributed to structural differences between the two methodologies. The methodological issues emerging from this comparison have important policy implications which are independent of the specific numerical conclusions. Since it is uncertain which, if either, of the models is correct, the use of one for policy analysis entails the risk that policy will be predicated on inaccurate …
Date: December 1, 1978
Creator: Goettle, R.J. IV; Hudson, E.A. & Lukachinski, J.
Object Type: Report
System: The UNT Digital Library
Geothermal Materials Development, Annual Report FY 1991 (open access)

Geothermal Materials Development, Annual Report FY 1991

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored full cost'' recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchangers, high temperature composites for utility vaults used in district heating systems, and corrosion resistant coatings for use in oil-fired electric generating processes. In FY 1991 the DOE/GD-sponsored R D project was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities being performed included lightweight CO{sub 2}- resistant well cements, chemical systems for lost circulation control, thermally conductive and scale resistant protective linear systems, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems needed for use in high temperature well drilling and safety related applications.
Date: December 1, 1991
Creator: Kukacka, L. E.
Object Type: Report
System: The UNT Digital Library
Selected constituents in the smoke of domestic low tar cigarettes (open access)

Selected constituents in the smoke of domestic low tar cigarettes

Thirty-two brands of domestic commercial low tar and nicotine cigarettes were analyzed for their production of tar, nicotine, nitrogen oxides (as nitric oxide), hydrogen cyanide, acrolein, carbon monoxide and carbon dioxide under standard analytical smoking conditions. Results are compared with published data for certain brands.
Date: December 1, 1977
Creator: Griest, W. H.; Quincy, R. B. & Guerin, M. R.
Object Type: Report
System: The UNT Digital Library
Technician support for operation and maintenance of large fusion experiments: the tandem mirror experiment upgrade (TMX-U) approach (open access)

Technician support for operation and maintenance of large fusion experiments: the tandem mirror experiment upgrade (TMX-U) approach

As experiments continue to grow in size and complexity, a few technicians will no longer be able to maintain and operate the complete experiment. Specialization is becoming the norm. Subsystems are becoming very large and complex, requiring a great deal of experience and training for technicians to become qualified maintenance/operation personnel. Formal in-house and off-site programs supplement on-the-job training to fulfill the qualification criteria. This paper presents the Tandem Mirror Experiment-Upgrade (TMX-U) approach to manpower staffing, some problems encountered, possible improvements, and safety considerations for the successful operation of a large experimental facility.
Date: December 1, 1983
Creator: Mattson, G.E.
Object Type: Article
System: The UNT Digital Library
Comprehensive energy-management program. Hybrid photovoltaic/thermal absorber. Annual report, September 1, 1980-December 31, 1981 (open access)

Comprehensive energy-management program. Hybrid photovoltaic/thermal absorber. Annual report, September 1, 1980-December 31, 1981

Research work was done during the reporting period on the two-part research program: (A) to improve energy conservation through increased unit and system efficiencies, energy management, and system optimization, and (B) to develop a novel, low-cost hybrid photovoltaic/thermal absorber. Performance tests were conducted on all the boilers and chillers on campus. Several corrective measures were indicated and implemented. A detailed survey of energy use by functions and consumption/demand study has been in progress. A preliminary computer simulation model of the entire campus has been developed and made operational. It has been demonstrated both analytically and experimentally that the reradiation losses from the absorber can be reduced significantly by utilizing a light-pipe absorber. Two paraboloidal dishes, one of 6 ft diameter and the other of 20 ft diameter have been utilized. Collector efficiencies have been measured at coolant outlet temperatures up to 282/sup 0/C with a square light-pipe absorber and with 6 ft diameter concentrator. Laser ray testing was conducted on both the 6 ft and 20 ft diameter concentrators. Design of the total energy absorber has been completed.
Date: December 1, 1981
Creator: Kumar, G. N.; Sellers, J. P. & Dybczak, Z. W.
Object Type: Report
System: The UNT Digital Library
Reactor Development Program. Progress Report, December 1967 (open access)

Reactor Development Program. Progress Report, December 1967

None
Date: December 31, 1968
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Evaluation of an all-glass, evacuated, tubular, nonfocusing, nontracking solar collector array. First annual progress report, July 1, 1976--August 31, 1977 (open access)

Evaluation of an all-glass, evacuated, tubular, nonfocusing, nontracking solar collector array. First annual progress report, July 1, 1976--August 31, 1977

A spaced, evacuated tubular radiation receiver employing a highly selective absorber surface and light enhancement features has been subject to extensive test and analysis. Air was used as the heat transfer fluid. The design, installation, test and analysis of the air cooled collector was conducted. The thermal performance of the air cooled collector was found to be better than predicted when rated on an all day operating basis. The high performance characteristic is enhanced by the features of ease of installation and freedom from maintenance and operational problems. High quality air or liquid may be provided (the latter by heat exchange) for a variety of load applications.
Date: December 1, 1977
Creator: Moan, K L
Object Type: Report
System: The UNT Digital Library
Computer simulation of coal preparation plants. Part 2. User's manual. Final report (open access)

Computer simulation of coal preparation plants. Part 2. User's manual. Final report

This report describes a comprehensive computer program that allows the user to simulate the performance of realistic coal preparation plants. The program is very flexible in the sense that it can accommodate any particular plant configuration that may be of interest. This allows the user to compare the performance of different plant configurations and to determine the impact of various modes of operation with the same configuration. In addition, the program can be used to assess the degree of cleaning obtained with different coal feeds for a given plant configuration and a given mode of operation. Use of the simulator requires that the user specify the appearance of the plant configuration, the plant operating conditions, and a description of the coal feed. The simulator will then determine the flowrates within the plant, and a description of each flowrate (i.e., the weight distribution, percent ash, pyritic sulfur and total sulfur, moisture, and Btu content). The simulation program has been written in modular form using the Fortran language. It can be implemented on a great many different types of computers, ranging from large scientific mainframes to IBM-type personal computers with a fixed disk. Some customization may be required, however, to ensure compatibility …
Date: December 1, 1985
Creator: Gottfried, B. S. & Tierney, J. W.
Object Type: Report
System: The UNT Digital Library
An Evaluation of liquid metal leak detection methods for the Clinch River Breeder Reactor Plant (open access)

An Evaluation of liquid metal leak detection methods for the Clinch River Breeder Reactor Plant

This report documents an independent review and evaluation of sodium leak detection methods described in the Clinch River Breeder Reactor Preliminary Safety Analysis Report. Only information in publicly available documents was used in making the assessments.
Date: December 1, 1977
Creator: Morris, C. J. & Doctor, S. R.
Object Type: Report
System: The UNT Digital Library
Tritium half-life (open access)

Tritium half-life

Least squares analyses of calorimetric measurements made at Mound Laboratory on two tritide compounds over a period of 18 y were performed to determine the half-life of tritium. A half-life of 12.3232 +- 0.0043 mean solar years was obtained.
Date: December 22, 1977
Creator: Rudy, C. R. & Jordan, K. C.
Object Type: Report
System: The UNT Digital Library
Management of radioactive waste gases from the nuclear fuel cycle. Volume I. Comparison of alternatives (open access)

Management of radioactive waste gases from the nuclear fuel cycle. Volume I. Comparison of alternatives

Alternatives were compared for collection and fixation of radioactive waste gases released during normal operation of the nuclear fuel cycle, and for transportation and storage/disposal of the resulting waste forms. The study used a numerical rating scheme to evaluate and compare the alternatives for krypton-85, iodine-129, and carbon-14; whereas a subjective evaluation, based on published reports and engineering judgement, was made for transportation and storage/disposal options. Based on these evaluations, certain alternatives are recommended for an integrated scheme for waste management of each of the subject waste gases. Phase II of this project, which is concerned with the development of performance criteria for the waste forms associated with the subject gases, will be completed by the end of 1980. This work will be documented as Volume II of this report.
Date: December 1, 1980
Creator: Evans, A. G.; Prout, W. E.; Buckner, J. T. & Buckner, M. R.
Object Type: Report
System: The UNT Digital Library
Effect of Heat Flux on the Corrosion of Aluminum by Water. Part Iii. Final Report on Tests Relative to the High-Flux Isotope Reactor (open access)

Effect of Heat Flux on the Corrosion of Aluminum by Water. Part Iii. Final Report on Tests Relative to the High-Flux Isotope Reactor

The effect of very high heat fluxes on the corrosion of 1100 and 6061 aluminum alloys by water was investigated. The test conditions generally simulated those expected to exist during operation of the High-Flux lsotope Reactor. At heat fluxes between 1 and 2 x l0/sup 6/ Btu/hr-ft/sup 2/ and with coolant temperatures and velocities in the ranges of 13l to 250 deg F and 3l to 51 fps, respectively, a layer of boehmite ( alpha Al/sub 2/O/sub 3/- H/sub 2/0), which has low thermal conductivity, formed on the water-cooled aluminum surfaces during test. When only relatively thin films formed, the boehmite adhered tightly to the aluminum, but in those cases where relatively thick films formed, some boehmite spontaneously spalled from the surface. The rate at which the boehmite formed on the surface (and consequently the rate at which the aluminum temperature increased) was a function of the temperature at the specimen-water interface and the pH of the coolant. The lower the temperature and the lower the pH (in the range of 5.0 to 6.5 with HNO/sub 3/), the lower the rate of corrosion- product formation. Within the ranges investigated, pressure and flow rate were without effect, and the same results …
Date: December 20, 1961
Creator: Griess, J. C.; Savage, H. C.; Rainwater, J. G.; Mauney, T. H. & English, J. L.
Object Type: Report
System: The UNT Digital Library
Evaluation of models for developing biological input for the design and location of water-intake structures (open access)

Evaluation of models for developing biological input for the design and location of water-intake structures

An approach for assessing multiple stimulus/response relations between fish and water intake structures is presented in this report. The approach stresses stimulus/response relations influencing fish and shellfish distribution and is made up of two methods. The first places emphasis on spatial and temperal distributions of populations; information is presented in the form of a non-predictive model, which allows for organizing information and documenting review processes. The second approach encompasses functional relationships between environmental and biological stimuli and responses of organisms. By using the two methods together, functional relationships can be evaluated to define the distribution of a fish or shellfish species. This information can then be used to resolve questions relating to impingement and entrainment.
Date: December 1, 1981
Creator: Simmons, M. A. & McKenzie, D. H.
Object Type: Report
System: The UNT Digital Library
Basic aspects of radiation action on microorganisms. Final report for the period ending October 31, 1977. [Radioresistance of micrococcus luteus] (open access)

Basic aspects of radiation action on microorganisms. Final report for the period ending October 31, 1977. [Radioresistance of micrococcus luteus]

Progress is reported on studies on the basic aspects of radiation effects on microorganisms. Results are included from studies on the effects of uv pretreatment on the survival of ..gamma..-irradiated micrococcus luteus and uv-induced radioresistance to bacteriophage.
Date: December 1, 1977
Creator: Pollard, E.C.
Object Type: Report
System: The UNT Digital Library
Review of recent measurements of charmed particle lifetimes using emulsions (open access)

Review of recent measurements of charmed particle lifetimes using emulsions

This talk is a review of results which have been reported during the past year on charmed particle decays in emulsions.
Date: December 1, 1979
Creator: Voyvodic, L.
Object Type: Article
System: The UNT Digital Library
Procedure for developing biological input for the design, location, or modification of water-intake structures (open access)

Procedure for developing biological input for the design, location, or modification of water-intake structures

To minimize adverse impact on aquatic ecosystems resulting from the operation of water intake structures, design engineers must have relevant information on the behavior, physiology and ecology of local fish and shellfish. Identification of stimulus/response relationships and the environmental factors that influence them is the first step in incorporating biological information in the design, location or modification of water intake structures. A procedure is presented in this document for providing biological input to engineers who are designing, locating or modifying a water intake structure. The authors discuss sources of stimuli at water intakes, historical approaches in assessing potential/actual impact and review biological information needed for intake design.
Date: December 1, 1981
Creator: Neitzel, D. A. & McKenzie, D. H.
Object Type: Report
System: The UNT Digital Library
Reactor Development Program. Progress Report, November 1967 (open access)

Reactor Development Program. Progress Report, November 1967

None
Date: December 31, 1967
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Computer program SCAP-BR for gamma-ray streaming through multi-legged ducts (open access)

Computer program SCAP-BR for gamma-ray streaming through multi-legged ducts

A computer program, SCAP-BR, has been developed at Burns and Roe for the gamma-ray streaming analysis through multi-legged ducts. SCAP-BR is a modified version of the single scattering code, SCAP, incorporating capabilities of handling multiple scattering and volumetric source geometries. It utilizes the point kernel integration method to calculate both the line-of-sight and scattered gamma dose rates by employing the ray tracing technique through complex shield geometries. The multiple scattering is handled by a repeated process of the single scatter method through each successive scatter region and collapsed pseudo source meshes constructed on the relative coordinate systems. The SCAP-BR results have been compared with experimental data for a Z-type (three-legged) concrete duct with a Co-60 source placed at the duct entrance point. The SCAP-BR dose rate predictions along the duct axis demonstrate an excellent agreement with the measured values.
Date: December 8, 1977
Creator: Byoun, T. Y.; Babel, P. J. & Dajani, A. T.
Object Type: Article
System: The UNT Digital Library
Industrial Fuel Gas Demonstration-Plant Program. Pretreatment unit options (Deliverable No. 41) (open access)

Industrial Fuel Gas Demonstration-Plant Program. Pretreatment unit options (Deliverable No. 41)

Three approaches to pretreatment for the Industrial Fuel Gas Demonstration Plant project in the Institute of Gas Technology (IGT) Pilot Plant have been examined. Analyses of these approaches, selection of the best alternative among the three, and detailed design and evaluation of cost and schedule impacts were made. The best approach available to pretreatment demonstration is an integrated pretreater - an ash agglomerating gasifier (AAG) that uses the existing AAG system, a new pretreater pressure vessel, and needed ancillary equipment. Based on pilot plant results, IGT dos not recommend pretreatment for the Industrial Fuel Gas Demonstration Plant or testing pretreatment in the IGT Pilot Plant, but merely suggests the above approach to pilot plant testing of pretreatment as the most viable. Based on pilot plant tests, IGT does not feel that pretreatment is necessary for operation of the ash agglomerating gasifier with Western Kentucky No. 9 coal. IGT has developed a feeding technique that enables raw coal to be fed directly to the gasifier without plugging of the feed nozzle lines which has been demonstrated in several tests. Should pretreatment prove necessary because of unforeseen circumstances, IGT has studied the available alternatives and has selected the best alternative for detailed …
Date: December 1, 1978
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Results of the radiological survey at 17 John Street, Lodi, New Jersey (open access)

Results of the radiological survey at 17 John Street, Lodi, New Jersey

Maywood Chemical Works (MCW) of Maywood, New Jersey, generated process wastes and residues associated with the production and refining of thorium and thorium compounds from monazite ores from 1916 to 1956. MCW supplied rare earth metals and thorium compounds to the Atomic Energy Commission and various other government agencies from the late 1940s to the mid-1950s. Area residents used the sandlike waste from this thorium extraction process mixed with tea and cocoa leaves as mulch in their yards. Some of these contaminated wastes were also eroded from the site into Lodi Brook. At the request of the US Department of Energy (DOE), a group from Oak Ridge National Laboratory conducts investigative radiological surveys of properties in the vicinity of MCW to determine whether a property is contaminated with radioactive residues, principally {sup 232}Th, derived from the MCW site. The survey typically includes direct measurement of gamma radiation levels and soil sampling for radionuclide analyses. The survey of this site, 17 John Street, Lodi, New Jersey (LJ088), was conducted during 1988. 5 refs., 2 figs., 3 tabs.
Date: December 1, 1989
Creator: Foley, R.D. & Floyd, L.M.
Object Type: Report
System: The UNT Digital Library
Staff rosters for 1979: environmental programs (open access)

Staff rosters for 1979: environmental programs

The roster of the scientific and professional staffs of the Environmental Programs of the Department of Energy and Environment has been compiled as of December 1979. Staff members have been listed according to their organizational units, i.e., the Atmospheric Sciences Division, the Environmental Chemistry Division, the Oceanographic Sciences Division, and the Land and Freshwater Environmental Sciences Group. Educational background, research interests, professional activities, summary of experience at BNL, and selected publications have been included for each member listed.
Date: December 1, 1979
Creator: unknown
Object Type: Report
System: The UNT Digital Library
LLL total flow geothermal program: summary of two-phase nozzle tests for scale control and materials performance (open access)

LLL total flow geothermal program: summary of two-phase nozzle tests for scale control and materials performance

A series of nozzle and wearblade tests to evaluate scale control and materials performance under total flow nozzle inlet conditions and simulated turbine blade environments was completed using Magmamax No. 1 well fluid. Brine acidification was effective in preventing scale in nozzles and on wearblade flow surfaces. Acid consumption measurements indicate that acid cost will be less than 2 mills/100 lb. brine. Measured erosion rates were low and the results indicate that available materials will allow successful turbine operation for many years. Stress corrosion cracking was not observed in specimens of the leading candidate turbine material (Ti-6A1-4V) after up to 60-hours operation at stresses similar to those expected in an operating turbine system.
Date: December 1, 1977
Creator: Tardiff, G.E. (ed.)
Object Type: Report
System: The UNT Digital Library