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1978 USGS Geothermal Resource Assessment

Description: The author distinguishes between geothermal resource base, accessible geothermal resource base, geothermal resource, and geothermal reserve. Conditions for periodically updating the assessment of geothermal energy resources include: increased data from expanded exploration and drilling; development of improved and new technologies for exploration, evaluation, extraction, and use; rapid evolution of geothermal knowledge; and the increased role of geothermal energy in response to changing economi… more
Date: December 14, 1977
Creator: Muffler, L.J. Patrick
Item Type: Refine your search to only Article
open access

ABCXYZ: vector potential (A) and magnetic field (B) code (C) for Cartesian (XYZ) geometry using general current elements. [In LRL TRAN for CDC > 600 computer]

Description: ABCXYZ is a computer code for obtaining the Cartesian components of the vector potential and the magnetic field on an observed grid from an arrangement of current-carrying wires. Arbitrary combinations of straight line segments, arcs, and loops are allowed in the specification of the currents. Arbitrary positions and orientations of the current-carrying elements are also allowed. Specification of the wire diameter permits the computation of well-defined fields, even in the interiors of the cond… more
Date: September 14, 1976
Creator: Anderson, D. V.; Breazeal, J.; Finan, C. H. & Johnston, B. M.
Item Type: Refine your search to only Report
open access

Acetic acid production from marine algae. Progress report No. 1, July 1--September 30, 1977

Description: Progress is reported in research designed to develop an economically competitive process for producing acetic acid from biomass for the purpose of sparing petroleum for other uses, to evaluate marine algae as a potential source of biomass, and to document the feasibility of running fermentations in fixed packed bed fermenters. It was demonstrated that marine algae can be fermented to acetic acid. Initial rates of up to 168 meq/1 day were observed. These rates are substantially in excess of the … more
Date: October 14, 1977
Creator: Sanderson, J.E.; Augenstein, D.C. & Wise, D.L.
Item Type: Refine your search to only Report
open access

Actinide recovery from combustible waste: the Ce(IV)-NHO/sub 3/ system. Final report

Description: Actinides in ash can be leached effectively by refluxing with Ce(IV) in HNO/sub 3/; solubilization of actinide in ash was greater than or equal to 95% at ash concentrations to 30 g/l in stirred leachant. Plutonium and americium were the actinides present in the ash. Solubilized plutonium and americium were recovered from Ce(IV)-HNO/sub 3/ solution by solvent extraction. Extraction of plutonium into 30% tributyl phosphate in n-dodecane gave 99.99% recovery. The plutonium-depleted solution was th… more
Date: September 14, 1979
Creator: Thompson, G. H.; Childs, E. L.; Kochen, R. L.; Schmunk, R. H. & Smith, C. M.
Item Type: Refine your search to only Report
open access

Advanced gas cooled nuclear reactor materials evaluation and development program. Progress report, July 1, 1977--September 30, 1977

Description: Work covered includes an updated listing of the alloys selected for the screening tests, plus complete test specimen matrices for the screening program. The present design and construction status of the simulated reactor helium loops and testing and analysis facilities and equipment are discussed. Also covered are the loading matrices for the screening creep tests.
Date: November 14, 1977
Item Type: Refine your search to only Report
open access

Alpha Fuels Environmental Test Facility impact gun

Description: The Alpha Fuels Environmental Test Facility (AFETF) impact gun is a unique tool for impact testing /sup 238/PuO/sub 2/-fueled heat sources of up to 178-mm dia at velocities to 300 m/s. An environmentally-sealed vacuum chamber at the muzzle of the gun allows preheating of the projectile to 1,000/sup 0/C. Immediately prior to impact, the heat source projectile is completely sealed in a vacuum-tight catching container to prevent escape of its radioactive contents should rupture occur. The impact v… more
Date: December 14, 1978
Creator: Anderson, C.G.
Item Type: Refine your search to only Report
open access

Alternative oxidizers for strip coal mine blasting agents. [Including study of possible substitutes; 53 references]

Description: Since ammonium nitrate manufacture is dependent on natural gas, a shortage in natural gas could lead to a critical shortage in coal by limiting the availability of ammonium nitrate for blasting. The purpose of this study was to assess the future availability of ammonium nitrate and to evaluate the potential of alternative oxidizers not dependent upon natural gas for use in blasting agents. Increased storage capacities and rapidly increasing levels of relativey cheap imported ammonia appear to e… more
Date: March 14, 1979
Creator: Sudweeks, W. B. & Collins, T. K.
Item Type: Refine your search to only Report
open access

Amorphous silicon thin films heterojunction solar cells. Second quarterly progress report, January 31-March 31, 1979

Description: A full description is given of a glow discharge deposition system, as well as a schematic. A growth rate of 2 to 3 A/sec is reported across a total substrate diameter of 76 mm, and films of a-Si:H free of oxygen and carbon contaminants have been obtained. Other films deposited include: doped and undoped a-Si:H and a-Si/sub x/C/sub 1-x/:H, n-i-p, a-Si:H plus n-i-p, a-Si:H plus a-Si/xub x/C/sub 1-x/. Optical transmission measurements from .35 to 50 microns wavelength were made on these films. A s… more
Date: May 14, 1979
Item Type: Refine your search to only Report
open access

Analysis of abnormalities of snubbers in nuclear-reactor service (Report 1)

Description: An investigation was conducted of malfunctions of snubbers (seismic-shock arrestors) in service in nuclear power plants. The construction and use of snubbers is summarized, and the history of snubber problems in nuclear service is reviewed. Reports of many hundreds of snubber malfunctions were found in the abnormal-occurrence reports of the docket literature. The great majority of these abnormal occurrences consisted of hydraulic snubbers whose hydraulic fluid had leaked out because of deterior… more
Date: October 14, 1976
Creator: Butler, J. H. & O'Hara, F. M. Jr.
Item Type: Refine your search to only Report
open access

Analysis of ceramic materials for impact members in isotopic heat sources

Description: Of the available high strength ceramics, silicon nitride offers the most promise followed by silicon carbide and aluminum oxide, and stress analyses show severe limitations on allowable velocities for impact with granite following reentry for these ceramics. Impact velocities in the 100 to 200 fps regime can be achieved only by the addition of an additional layer to distribute the high contact stress. Besides impact limitations, application of ceramic materials in heat sources would present pro… more
Date: May 14, 1976
Creator: Simonen, F. A. & Duckworth, W. H.
Item Type: Refine your search to only Report
open access

Analysis of Geothermal Well Logs

Description: In the petroleum industry, well logging is a well developed discipline that has matured over a fifty-year period. Compared to this, geothermal well logging is a very new field of activity. The current practice is to use the same logging equipment and the same log interpretation techniques for geothermal wells as had been used for petroleum wells. However, this approach has proven either inadequate or ineffective in most geothermal areas. The problems here are of two types: (1) those associated … more
Date: December 14, 1977
Creator: Sanyal, Subir K.
Item Type: Refine your search to only Article
open access

Analysis of LOFT steam generator main feed piping loop seal modification

Description: The stress analysis is presented for the proposed loop seal modification to the LOFT Steam Generator Main Feed Piping. THE SAP IV finite element computer program was used to analyze normal, upset, emergency, and faulted conditions. Results of the analysis indicate that the modified main feed piping system will satisfy all structural adequacy criteria specified in Subarticle NC-3650 of the ASME Boiler and Pressure Vessel Code. Results also show that the isolation snubber configuration, specified… more
Date: February 14, 1978
Creator: Nitzel, M.E.
Item Type: Refine your search to only Report
open access

Application of solar energy to the supply of industrial process hot water. Energy reduction and economic analysis report. Aerotherm report TR-76-220. [Can washing at Campbell Soup Company in California]

Description: A discussion is provided of the following aspects of the solar process hot water program: criteria and rationale used in process selection, expected fuel savings to be provided by widespread use of the solar energy system in the industry, and economic evaluation of the system. The design, construction, operation, and evaluation of a solar water heating system for application to the can washing process at the Campbell Soup Company's plant located in Sacramento, California are included.
Date: October 14, 1976
Item Type: Refine your search to only Report
open access

Application of solar energy to the supply of industrial process hot water: preliminary design and performance report. Volume I. Technical report. Aerotherm report TR-76-219. [For can washing at Campbell Soup Plant in Sacramento]

Description: The design and performance of a solar hot water system for can washing at the Campbell Soup Plant in Sacramento, California, are presented. The collector field is located on the roof of the finished products warehouse of the Campbell Soup Sacramento plant. Water is supplied from a 3.8 cm (1/sup 1///sub 2/ in.) supply line which is located directly below an existing roof access hatch. A supply pipe will be brought up through that hatch. The water flow will then be split into two manifold lines w… more
Date: October 14, 1976
Item Type: Refine your search to only Report
open access

ATD user's manual. [For unpacking, scaling, plotting, filtering, and statistical analysis of data]

Description: The ATD code is a multi-purpose code which reduces data files produced by a digitizer. It contains all of the features for the basic unpacking, scaling, and plotting of digitized data files. More advanced capabilities are also available. Digital filtering, spectral analysis, and statistical analysis, among others, allow the engineer the capability to analyze and display time history data. In contrast to codes such as DYMEC, the data files are typically of high frequency and short duration, repr… more
Date: February 14, 1977
Creator: Shannon, A. W.
Item Type: Refine your search to only Report
open access

Auto-acceleration in an iris loaded pipe

Description: Calculations for the process of auto-acceleration in an irisloaded pipe are presented. The electrom-agnetic fields generated by the beam current are calculated. Particle dynamics equations are given which consider only the axial motion of the electron. Also, results are given for calculations on a beam current rising linearly with time at the rate of 1700 A/ns. (WHK)
Date: December 14, 1973
Creator: Neil, V. K. & Mirin, A. A.
Item Type: Refine your search to only Report
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