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Radioactive Waste Isolation in Salt: A Method for Evaluating the Effectiveness of Site Characterization Measurements

Description: The approach presumes that measurements are undertaken to support performance predictions. A quantitative performance objective like groundwater travel time is compared with performance predictions. The approach recognizes that such predictions are uncertain because the measurements upon which they are based are uncertain. The effectiveness of measurement activities is quantified by an index, ..beta.., that reflects the number of standard deviations separating the best estimate of performance f… more
Date: March 1, 1988
Creator: Ditmars, J. D.; Baecher, G. B.; Edgar, D. E. & Dowding, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of flow data from the DOW/DOE L. R. Sweezy No. 1 well

Description: This topical report presents the results of work to-date on the analysis and simulation of flow and pressure data from the testing of the L.R. Sweezy No. 1 well. Analysis of drawdown data indicates a formation permeability of around 126 md, and a flow-rate dependent skin. The conventional analysis techniques were, however, found to be inadequate for analyzing the buildup data. The formation properties inferred from the drawdown were used together with the CHARGR simulator to simulate the produc… more
Date: March 1, 1984
Creator: Garg, S. K. & Riney, T. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanisms affecting mass transfer in fuel cells

Description: An initial analysis of particulate effects on molten carbonate fuel cells has been conducted. The analysis has been applied to a conceptual fuel cell with operating parameters appropriate to use with future power generation plants. Particle transport due to several mechanisms has been considered and dominant mechanisms affecting particle delivery to anode channel surfaces and into anode pores have been identified. Thermophoresis and gas flow out from anode pores have been found to inhibit parti… more
Date: March 15, 1982
Creator: Wenglarz, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spatial patterns of radiological dose from wells drilled near nuclear waste repositories

Description: This report describes methodology for assessing the spatial patterns of radiological dose to man from wells drilled near nuclear waste repositories. Descriptions of the various categories of water wells and a model of a typical aquifer are presented. The equation governing the one-dimensional flow of waste in groundwater through porous media to a well is discussed. This is followed by development of a method for constructing lines of constant dose from a well located randomly in the plane of th… more
Date: March 31, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Demonstration of rapid and sensitive module leak certification for space station freedom

Description: A leak detection and quantification demonstration using perflurocarbon tracer (PFT) technology was successfully performed at the NASA Marshall Space Flight Center on January 25, 1991. The real-time Dual Trap Analyzer (DTA) at one-half hour after the start of the first run gave an estimated leak rate of 0.7 mL/min. This has since been refined to be 1.15 {plus minus} 0.09 mL/min. The leak rates in the next three runs were determined to be 9.8 {plus minus} 0.7, {minus}0.4 {plus minus} 0.3, and 76 … more
Date: March 1, 1991
Creator: Dietz, R. N. & Goodrich, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of field-performance data on shell-and-tube heat exchangers in geothermal service

Description: Analysis of field performance data from a binary cycle test loop using geothermal brine and a hydrocarbon working fluid is reported. Results include test loop operational problems, and shell-and-tube heat exchanger performance factors such as overall heat transfer coefficients, film coefficients, pinch points, and pressure drops. Performance factors are for six primary heaters having brine in the tubes and hydrocarbon in the shells in counterflow, and for a condenser having cooling water in the… more
Date: March 1, 1982
Creator: Silvester, L. F. & Doyle, P. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western gas sands project. Status report, July-August-September 1981

Description: The progress during July, August and September 1981 on increasing gas production from low permeability gas sands of the Western United States, is summarized in this edition of the WGSP Quarterly Status Report. During the quarter, CK GeoEnergy completed the field work in the Rifle Gap area near Rifle, Colorado, as well as the Draft Phase VI report covering the prognosis about reservoir geometry in the Multi-Well site area. The improved pressure coring system project, officially terminated Sept. … more
Date: March 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Flow loop studies with AMAX coal-water mixtures

Description: The coal-water mixtures (CWM) with a stabilizer and the CWM without stabilizers were successfully transported through a flow loop facility under a variety of conditions. The handling characteristics of both CWM were reasonable. The mix tank mixer was not needed during nontesting hours to prevent settling of either material. After several days of transporting the nonstabilized material in the loop facility, the viscosity-reducing agent became ineffective. It was necessary to increase the concent… more
Date: March 1, 1984
Creator: Wildman, D.J. & Ekmann, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of data obtained from core tests in the design and operation of spent brine injection wells in geopressured or geothermal systems

Description: The effects of formation characteristics on injection well performance are reviewed. Use of data acquired from cores taken from injection horizons to predict injectivity is described. And methods for utilizing data from bench scale testing of brine and core samples to optimize injection well design are presented. Currently available methods and equipment provide data which enable the optimum design of injection wells through analysis of cores taken from injection zones. These methods also provi… more
Date: March 1, 1980
Creator: Jorda, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A code to compute borehole fluid conductivity profiles with multiple feed points

Description: Investigators wish to determine the flow characteristics of fractures intersecting a wellbore to understand the hydrologic behavior of fractured rocks. Often inflow from these fractures into the wellbore is at very low rates. A new procedure has been proposed and a corresponding method of analysis developed to obtain fracture inflow parameters from a time sequence of electric conductivity logs of the borehole fluid. The present report gives the details of equations and computer code used to com… more
Date: March 1, 1988
Creator: Hale, F. V. & Tsang, C. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pumping tests of well Campbell et al. No. 2, Gila Hot Springs, Grant County, New Mexico

Description: Well Campbell et al. No. 2 near Gila Hot Springs in southwestern New Mexico (Section 5, Township 13 South, Range 13 West) was pumped for a five-step test and a 48-hour constant-rate test during October 1981. Measurements included depth to water in the pumping well and two observation wells, and discharge rates at the pumping well and two springs. The water level in the pumping well responded during both tests. However, water-level changes in the observation wells were too small for analytical u… more
Date: March 1, 1982
Creator: Schwab, G.E.; Summers, W.K.; Colpitts, R.M. Jr.; Teuten, C.E. & Young, W.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theory and tests of two-phase turbines

Description: Two-phase turbines open the possibility of new types of power cycles operating with extremely wet mixtures of steam and water, organic fluids, or immiscible liquids and gases. Possible applications are geothermal power, waste-heat recovery, refrigerant expansion, solar conversion, transportation turbine engines, and engine bottoming cycles. A theoretical model for two-phase impulse turbines was developed. Apparatus was constructed for testing one- and two-stage turbines (using speed decrease fr… more
Date: March 15, 1982
Creator: Elliot, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Repository Site Definition in Basalt: Pasco Basin, Washington

Description: Discussion of the regional setting, geology, hydrology, and geochemistry of the Pasco Basin are included in this report. Pasco basin is a structural and topographic basin of approximately 2000 mi/sup 2/ (5180 km/sup 2/) located within the Yakima Fold Belt Subprovince of the Columbia Plateau. The stratigraphic sequence within the basin consists of an undetermined thickness of lower Miocene and younger flood basalts with interbedded and overlying sedimentary units. This sequence rests upon a base… more
Date: March 1, 1982
Creator: Guzowski, R. V.; Nimick, F. B. & Muller, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transient well testing in two-phase geothermal reservoirs

Description: A study of well test analysis techniques in two-phase geothermal reservoirs has been conducted using a three-dimensional, two-phase, wellbore and reservoir simulation model. Well tests from Cerro Prieto and the Hawaiian Geothermal project have been history matched. Using these well tests as a base, the influence of reservoir permeability, porosity, thickness, and heat capacity, along with flow rate and fracturing were studied. Single and two-phase transient well test equations were used to anal… more
Date: March 1, 1980
Creator: Aydelotte, S.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a multimedia radionuclide exposure model for low-level waste management

Description: A method is being developed for assessing exposures of the air, water, and plants to low-level waste (LLW) as a part of an overall development effort of a LLW site evaluation methodology. The assessment methodology will predict LLW exposure levels in the environment by simulating dominant mechanisms of LLW migration and fate. The methodology consists of a series of physics-based models with proven histories of success; the models interact with each other to simulate LLW transport in the ecosyst… more
Date: March 1, 1982
Creator: Onishi, Y.; Whelan, G. & Skaggs, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tube vibration in industrial size test heat exchanger

Description: Tube vibration data from tests of a specially built and instrumented, industrial-type, shell-and-tube heat exchanger are reported. The heat exchanger is nominally 0.6 m (2 ft) in dia and 3.7 m (12 ft) long. Both full tube and no-tubes-in-window bundles were tested for inlet/outlet nozzles of different sizes and with the tubes supported by seven, equally-spaced, single-segmental baffles. Prior to water flow testing, natural frequencies and damping of representative tubes were measured in air and… more
Date: March 1, 1980
Creator: Halle, H. & Wambsganss, M.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Identification of groundwater-producing fractures by using an electromagnetic borehole flowmeter in monitoring wells on the Oak Ridge Reservation, Oak Ridge, Tennessee

Description: This report describes the results of electromagnetic borehole flowmeter surveys taken on the Oak Ridge Reservation (ORR) with an instrument developed by the Engineering Laboratory of Tennessee Valley Authority (TVA). The borehole flowmeter can be used during water injection or pumping to determine the depth, vertical extent, and relative permeability of fractures that are intercepted by the wells. The flowmeter can also be used to measure any natural water flows, up or down an openhole interval… more
Date: March 1, 1992
Creator: Moore, G. K. & Young, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of modeling studies of the East Olkaria geothermal field, Kenya

Description: A detailed three-dimensional well-by-well model of the East Olkaria geothermal field in Kenya has been developed. The model matches reasonably well the flow rate and enthalpy data from all wells, as well as the overall pressure decline in the reservoir. The model is used to predict the generating capacity of the field, well decline, enthalpy behavior, the number of make-up wells needed and the effects of injection on well performance and overall reservoir depletion. 26 refs., 10 figs.
Date: March 1, 1985
Creator: Bodvarsson, G. S.; Pruess, K.; Stefansson, V.; Bjornsson, S. & Ojiambo, S. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Fifth quarterly progress report, September 29, 1977-December 29, 1977

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. PCM's under study are Mg(NO/sub 3/)/sub 2/.6H/sub 2/O, stearic acid, Mg(NO/sub 3/)/sub 2/.6H/sub 2/O-NH/sub 4/NO/sub 3/. A study of the storage capability of CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles has been completed.
Date: March 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Long tube heat exchanger: the facility and some preliminary tests on the down center/up annular flow configuration

Description: A test facility was designed and constructed to study forced flow boiling heat transfer in a closed loop long tube heat exchanger which is a two concentric-tube vertical design. The system consists of a 12 m long heat exchanger which can be operated at pressures to 689.3 kPa with pumped or natural convection flow rates from 0.0631 to 0.631 liters/second and which can be irradiated with a maximum steady heat flux rate of 50 kW/m/sup 2/ by a set of resistive heaters operable at temperatures up to… more
Date: March 1, 1980
Creator: Lee, D. O.; Johnson, R. W. & Weatherbee, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mass transport in salt repositories: Steady-state transport through interbeds

Description: Salt has long been a candidate for geologic disposal of nuclear waste. Because salt is extremely soluble in water, the existence of rock salt in the ground atest to the long-term stability of the salt. Both bedded salt and salt domes have been considered for nuclear waste disposal in the United States and Europe. While the salt is known to be quite pure in salt domes, bedded salt is interlaced with beds of sediments. Traditionally rock salt has not been considered water-conducting, but sediment… more
Date: March 1, 1989
Creator: Hwang, Y.; Lee, W. W. L.; Chambre, P. L. & Pigford, T. H. (California Univ., Berkeley, CA (USA). Dept. of Nuclear Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Separation of Yeast Cells from MS2 Viruses Using Acoustic Radiation Force

Description: We report a rapid and robust separation of Saccharomyces cerevisiae and MS2 bacteriophage using acoustic focusing in a microfluidic device. A piezoelectric transducer (PZT) generates acoustic standing waves in the microchannel. These standing waves induce acoustic radiation force fields that direct microparticles towards the nodes (i.e., pressure minima) or the anti-nodes (i.e., pressure maxima) of the standing waves depending on the relative compressidensity between the particle and the suspen… more
Date: March 27, 2008
Creator: Jung, B.; Fisher, K.; Ness, K.; Rose, K. A. & Mariella, R. P., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effect of Saline Waste Solution Infiltration Rates on Uranium Retention and Spatial Distribution in Hanford Sediments

Description: The accidental overfilling of waste liquid from tank BX-102 at the Hanford Site in 1951 put about 10 metric tons of U(VI) into the vadose zone. In order to understand the dominant geochemical reactions and transport processes occurred during the initial infiltration and help understand current spatial distribution, we simulated the waste liquid spilling event in laboratory sediment columns using synthesized metal waste solution. We found that, as the plume propagating through sediments, pH decr… more
Date: March 15, 2007
Creator: Wan, Jiamin; Tokunaga, Tetsu K.; Kim, Yongman; Wang, Zheming; Lanzirotti, Antonio; Saiz, Eduardo et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Technical Feasibility of Homogeneous Charge Compression Ignition (HCCI) Engine Fueled with Hydrogen, Natural Gas, and DME

Description: The objective of the proposed project was to confirm the feasibility of using blends of hydrogen and natural gas to improve the performance, efficiency, controllability and emissions of a homogeneous charge compression ignition (HCCI) engine. The project team utilized both engine simulation and laboratory testing to evaluate and optimize how blends of hydrogen and natural gas fuel might improve control of HCCI combustion. GTI utilized a state-of-the art single-cylinder engine test platform for … more
Date: March 31, 2007
Creator: Pratapas, John; Mather, Daniel & Kozlovsky, Anton
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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