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Evaluation of European empirical methods for subsidence in US coal fields

The purpose of this study was to assess the applicability of European subsidence methods for the emerging US longwall practice. Subsidence prediction in Europe has typically used either graphical methods (United Kingdom) or mathematical methods. The mathematical methods utilize either profile or influence functions. The graphical methods were developed in the United Kingdom (UK) by the National Coal Board (NCB) from subsidence data obtained from numerous mines. Although a large data base in the… more

Date: April 1, 1980

Creator: Munson, D. E. & Eichfeld, W. F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Computerized international geothermal information systems

The computerized international geothermal energy information system is reviewed. The review covers establishment of the Italy - United States linked data centers by the NATO Committee on Challenges of Modern Society, through a bilateral agreement, and up to the present time. The result of the information exchange project is given as the bibliographic and numerical data available from the data centers. Recommendations for the exchange of computerized geothermal information at the international l… more

Date: March 1, 1980

Creator: Phillips, S.L.; Lawrence, J.D. & Lepman, S.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fossil Energy Program. Progress report for April 1980

This report - the sixty-ninth of a series - is a compendium of monthly progress reports for the ORNL research and development programs that are in support of the increased utilization of coal and other fossil fuel alternatives to oil and gas as sources of clean energy. The projects reported this month include those for coal conversion development, chemical research and development, materials technology, component and process evaluation studies, technical support to major liquefaction projects, … more

Date: June 1, 1980

Creator: McNeese, L.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Between-hole acoustic surveying and monitoring of a granitic rock mass

The purpose of this technical note is to present preliminary results of an acoustic monitoring study performed as part of a comprehensive rock mechanic and geophysics research program (Ref.20) associated with large-scale heater tests in an abandoned iron-ore mine in central Sweden. The investigation was performed in a fractured granitic rock mass at a sub-surface depth of 340 m, in a drift adjacent to the original iron-ore mine workings. Acoustic monitoring took place between four empty, dry, v… more

Date: February 1, 1980

Creator: Paulsson, B.N.P. & King, M.S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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LLNL Underground-Coal-Gasification Project. Quarterly progress report, July-September 1981

We have continued our laboratory studies of forward gasification in small blocks of coal mounted in 55-gal drums. A steam/oxygen mixture is fed into a small hole drilled longitudinally through the center of the block, the coal is ignited near the inlet and burns toward the outlet, and the product gases come off at the outlet. Various diagnostic measurements are made during the course of the burn, and afterward the coal block is split open so that the cavity can be examined. Development work con… more

Date: November 9, 1981

Creator: Stephens, D.R. & Clements, W. (eds.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Rainout assessment: the ACRA system and summaries of simulation results. [Computer systems to estimate threats from precipitation scavenging of radioactive debris clouds from nuclear weapons]

A generalized, three-dimensional, integrated computer code system was developed to estimate collateral-damage threats from precipitation-scavenging (rainout) of airborne debris-clouds from defensive tactical nuclear engagements. This code system, called ACRA for Atmospheric-Contaminant Rainout Assessment, is based on Monte Carlo statistical simulation methods that allow realistic, unbiased simulations of probabilistic storm, wind, and precipitation fields that determine actual magnitudes and pr… more

Date: September 1, 1977

Creator: Watson, C. W.; Barr, S. & Allenson, R. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Geophysical assessment of near-field ground motion and the implications for the design of nuclear installations

This paper gives an in-depth discussion on the various methodologies currently available to predict the near-field ground motion from an earthquake. The limitations of the various methods are discussed in some detail in light of recently available data. It is shown that, (at least for California earthquakes) for an earthquake with a given magnitude a wide variation in the peak ground motion can occur. The change in the spectral content of the ground motion is given as a function of earthquake m… more

Date: September 30, 1977

Creator: Bernreuter, D.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Icelandic basaltic geothermal field: A natural analog for nuclear waste isolation in basalt

Analog studies of Icelandic geothermal fields have shown that the design of nuclear waste repositories in basalt can benefit by comparison to the data base already available from the development of these geothermal fields. A high degree of similarity exists between these two systems: their petrology, groundwater geochemistry, mineral solubilities, hydrologic parameters, temperature ranges, water-rock redox equilibria, hydrothermal pH values, and secondary mineralogies all show considerable over… more

Date: November 21, 1984

Creator: Ulmer, G. C. & Grandstaff, D. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Thermomechanical modeling and data analysis for heating experiments at Stripa, Sweden

Comparisons were made between predicted and measured thermomechanical displacements and stresses for in situ heating experiments at a depth of 340 m in a granite body at Stripa, Sweden. We found that taking into account the temperature dependence of the thermal expansion coefficient and the mechanical properties of the rock substantially improves the agreement between theory and experiment. In general, the displacements calculated using laboratory values of rock properties agree better with fie… more

Date: November 1, 1979

Creator: Chan, T.; Littlestone, N. & Wan, O.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Proceedings of the second NATO-CCMS information meeting on dry hot rock geothermal energy

A summary is presented of the second and last NATO-CCMS (North Atlantic Treaty Organization--Committee on Challenges of Modern Society) Geothermal Pilot Study Information Meeting on Dry Hot Rock Geothermal Energy. Only summaries of the formal presentations are included. Overviews of the Energy Research and Development Administration (ERDA) and the U.S. Geological Survey (USGS) geothermal projects are included with emphasis on the Los Alamos Scientific Laboratory (LASL) Hot Dry Rock Geothermal E… more

Date: November 1, 1977

Creator: Mortensen, J.J. (comp.)

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Initial multi-national study of future energy systems and impacts of some evolving technologies

Participants from thirteen member nations of the International Energy Agency and the Commission of European Communities have been conducting cooperative energy systems analyses, the goal of which is to evaluate the possible impacts of new and conservation technologies. Such studies are intended to provide analytical bases to aid future decisions on cooperative research and development projects. In the initial studies, a quantitative description of the 1974 energy system has been prepared for ea… more

Date: March 25, 1977

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Pictorial characterization of worldwide electric and hybrid vehicles

The presentation given is intended to fulfill the several objectives of (1) documenting the pictorial review presented during ERDA's March 1, 1977, Conference on the Electric and Hybrid Vehicle Demonstration Project; (2) pictorially characterizing the present state of the electric and hybrid vehicle (EHV) art on an international scale; and (3) providing examples of the class of products expected to be available for the implementation of the early phases of Public Law 94-413. It is organize… more

Date: August 16, 1977

Creator: Kirk, R S & Barber, K F

Item Type: Article

Partner: UNT Libraries Government Documents Department

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International energy indicators. [Statistical tables and graphs]

International statistical tables and graphs are given for the following: (1) Iran - Crude Oil Capacity, Production and Shut-in, June 1974-April 1980; (2) Saudi Arabia - Crude Oil Capacity, Production, and Shut-in, March 1974-Apr 1980; (3) OPEC (Ex-Iran and Saudi Arabia) - Capacity, Production and Shut-in, June 1974-March 1980; (4) Non-OPEC Free World and US Production of Crude Oil, January 1973-February 1980; (5) Oil Stocks - Free World, US, Japan, and Europe (Landed, 1973-1st Quarter, 1980); (… more

Date: May 1, 1980

Creator: Bauer, E.K. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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European contribution to heat exchanger design/performance: HTFS research and computer programs. Final report. [SCON4 and CEMP1]

The performance of selected HTFS computer program in solving example heat exchanger design/performance situations is evaluated. In addition, the specific inputs required by the program are presented to give an idea of the amount of detail the user must supply concerning the heat transfer system. Comments on the versatility of each program and technical details necessary for running each program are also provided. The computer programs examined rate the performance of shell-and-tube type condens… more

Date: January 1, 1979

Creator: Lang, C. & Skrovanek, T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Reducing greenhouse gas emissions in Czechoslovakia

In this paper are presented important findings on the potential for energy conservation and carbon emissions reduction over the coming decades in Czechoslovakia. The authors describe the state of the energy use in Czechoslovakia today and the measures required to transform its energy system to a market-based economy oriented towards the environmental goal of decreased energy intensity. This work furthers our understanding of the need for energy efficiency in the newly forming market economies o… more

Date: December 1, 1991

Creator: Kostalova, M. (Office of International Economic Corp., Ministry of Foreign Affairs, Prague (Czechoslovakia)); Suk, J. (Inst. for Forecasting, Czechoslovak Academy of Sciences, Prague (Czechoslovakia)) & Kolar, S. (Pacific Northwest Lab., Richland, WA (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solar-assisted low energy dwellings

The Zero Energy House Group was formed as a subproject of the CCMS Solar Energy Pilot Study in 1974 by seven participating countries experimenting with solar-assisted low-energy dwellings for temperate and northern European climatic conditions. A Zero Energy House is one in which solar energy is used to meet the reduced energy needs of buildings incorporating various thermal energy conservation features. This final report of the Zero Energy House Group includes brief descriptions of 13 major lo… more

Date: February 1, 1980

Creator: Esbensen, T V

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fission-product yield data from the US/UK joint experiment in the Dounreay Prototype Fast Reactor

The United States and the United Kingdom have been engaged in a joint research program in which samples of fissile and fertile actinides have been incorporated in fuel pins and irradiated in the Dounreay Prototype Fast Reactor in Scotland. The purpose of this portion of the program is to study both the materials behavior and the nuclear physics results - primarily measurements of the fission-product yields in the irradiated samples and secondarily information on the amounts of heavy elements in… more

Date: April 1, 1986

Creator: Dickens, J.K. & Raman, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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ISC origin times for announced and presumed underground nuclear explosions at several test sites

Announced data for US and French underground nuclear explosions indicate that nearly all detonations have occurred within one or two tenths of a second after the minute. This report contains ISC origin-time data for announced explosions at two US test sites and one French test site, and includes similar data for presumed underground nuclear explosions at five Soviet sites. Origin-time distributions for these sites are analyzed for those events that appeared to be detonated very close to the min… more

Date: December 3, 1979

Creator: Rodean, H.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Start 2: Thinking one move ahead

At their summit meeting in the spring of 1990, Presidents Bush and Gorbachev issued a joint statement expressing their intentions to continue the process of strategic arms control beyond the Strategic Arms Reduction Treaty (START), which was eventually signed in July 1991, toward agreement on further reductions. They set general goals for negotiation of a follow-on treaty to START, which has been called START II. President Bush's historic speech on September 27, 1991, reinforced those goals and… more

Date: November 1, 1991

Creator: Gaines, L.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Pressurized fluidized-bed combustion part-load behavior. Volume I. Summary report

Tests performed during 1980 to determine the part-load characteristics of a pressurized fluidized-bed combustor for a combined-cycle power plant and to examine its behavior during load changing are discussed. Part-load operation was achieved by varying the bed temperature by amounts between 200 to 300/sup 0/F and the bed depth from between 9 and 10 ft at rates varying between 0.2 ft/min and 0.5 ft/min. The performance at part-load steady-state conditions and during transient conditions is repor… more

Date: September 1, 1981

Creator: Roberts, A. G.; Pillai, K. K.; Raven, P. & Wood, P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Storage of heat and coolth in hollow-core concrete slabs. Swedish experience, and application to large, American-style buildings

The Folksam office building in Farsta, near Stockholm, has operated since December 1977 with an energy use for direct space heating of only 60 kWh/m/sup 2/ (19,000 Btu/ft/sup 2/), which is only half the Stockholm average for new buildings. To this 60 kWh/m/sup 2/ must be added the typical electric use of another 60 kWh/m/sup 2/ for lights, equipment, fans, etc. Even though Stockholm has 3580 deg-day (C), new Swedish buildings are so well insulated that their temperature floats upwards during mo… more

Date: October 26, 1979

Creator: Anderson, L.O.; Bernander, K.G.; Isfaelt, E. & Rosenfeld, A.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Characterization of discontinuities in the Stripa granite

Characterization of the fracture system in a repository is important, and its purpose should dictate the scale over which measurements must be made. The results discussed pertain to nearfield behavior of a rock mass and represent a practical limit to the degree to which discrete subsurface discontinuities can be defined by surface mapping and cross-correlation of observational borehole data. Discontinuities on the scale of the rock mass being studied can dominate its response, and should theref… more

Date: October 1, 1979

Creator: Thorpe, R.K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

International efforts to reduce occupational radiation exposure at nuclear power plants

The efficacy of various national programs on dose reduction is examined with a view to evaluating the most significant factors that help in reducing occupational exposure. Among the most successful of the dose reduction programs at water reactors are those of France, Sweden, and Canada where average annual plant doses are significantly less than the dose at US plants. Important research is also going on in other countries such as the UK, West Germany, Switzerland, and Japan. Some programs are d… more

Date: January 1, 1986

Creator: Khan, T.A. & Baum, J.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Emulsified industrial oils recycling

The industrial lubricant market has been analyzed with emphasis on current and/or developing recycling and re-refining technologies. This task has been performed for the United States and other industrialized countries, specifically France, West Germany, Italy and Japan. Attention has been focused at emulsion-type fluids regardless of the industrial application involved. It was found that emulsion-type fluids in the United States represent a much higher percentage of the total fluids used than … more

Date: April 1, 1982

Creator: Gabris, T.

Item Type: Report

Partner: UNT Libraries Government Documents Department