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Office of Scientific & Technical Information Technical Reports
3,284
Technical Report Archive and Image Library
449
Texas State Publications
95
Congressional Research Service Reports
60
Office of Technology Assessment
34
Louise Young and Vivienne Armstrong Papers (The Dallas Way)
3
Texas Cultures Online
2
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1
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1
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1
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GJBX
288
United States Department of Energy Grand Junction Office Reports
249
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51
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50
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43
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39
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31
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23
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21
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21
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Fast-neutron total and scattering cross sections of /sup 58/Ni
Neutron total cross sections of /sup 58/Ni were measured at 25 keV intervals from 0.9 to 4.5 MeV with 50 to 100 keV resolutions. Attention was given to self-shielding corrections to the observed total cross sections. Differential elastic- and inelastic-scattering cross sections were measured at 50 keV intervals from 1.35 to 4.0 MeV with 50 to 100 keV resolutions. Inelastic excitation of levels at 1.458 +- 0.009, 2.462 +- 0.010, 2.791 +- 0.015, 2.927 +- 0.012 and 3.059 +- 0.025 MeV was observed. The experimental results were interpreted in terms of optical-statistical and coupled-channels models. A spherical optical-statistical model was found generally descriptive of an energy-average of the experimental results. However, detailed considerations suggested significant contributions from direct-vibrational interactions, particularly associated with the excitation of the first 2+ level.
Date:
September 1, 1981
Creator:
Jorgensen, C. B.; Guenther, P. T.; Smith, A. B. & Whalen, J. F.
System:
The UNT Digital Library
Vermont State Briefing Book on low-level radioactive waste management
The Vermont State Briefing Book is one of a series of state briefing books on low-level radioactive waste management practices. It has been prepared to assist state and federal agency officials in planning for safe low-level radioactive waste disposal. The report contains a profile of low-level radioactive waste generators in Vermont. The profile is the result of a survey of Nuclear Regulatory Commission licensees in Vermont. The briefing book also contains a comprehensive assessment of low-level radioactive waste management issues and concerns as defined by all major interested parties including industry, government, the media, and interest groups. The assessment was developed through personal communications with representatives of interested parties, and through a review of media sources. Lastly, the briefing book provides demographic and socioeconomic data and a discussion of relevant government agencies and activities, all of which may affect waste management practices in Vermont.
Date:
July 1, 1981
Creator:
unknown
System:
The UNT Digital Library
Texasgulf solar cogeneration program. Mid-term topical report
The status of technical activities of the Texasgulf Solar Cogeneration Program at the Comanche Creek Sulfur Mine is described. The program efforts reported focus on preparation of a system specification, selection of a site-specific configuration, conceptual design, and facility performance. Trade-off studies performed to select the site-specific cogeneration facility configuration that would be the basis for the conceptual design efforts are described. Study areas included solar system size, thermal energy storage, and field piping. The conceptual design status is described for the various subsystems of the Comanche Creek cogeneration facility. The subsystems include the collector, receiver, master control, fossil energy, energy storage, superheat boiler, electric power generation, and process heat subsystems. Computer models for insolation and performance are also briefly discussed. Appended is the system specification. (LEW)
Date:
February 1, 1981
Creator:
unknown
System:
The UNT Digital Library
Economic assessment of advanced flue gas desulfurization processes. Final report
This report presents the results of a project sponsored by the Morgantown Energy Technology Center (METC). The purpose of the study was to perform an economic and market assessment of advanced flue gas desulfurization (FGD) processes for application to coal-fired electric utility plants. The time period considered in the study is 1981 through 1990, and costs are reported in 1980 dollars. The task was divided into the following four subtasks: (1) determine the factors affecting FGD cost evaluations; (2) select FGD processes to be cost-analyzed; (3) define the future electric utility FGD system market; and (4) perform cost analyses for the selected FGD processes. The study was initiated in September 1979, and separate reports were prepared for the first two subtasks. The results of the latter two subtasks appear only in this final reprot, since the end-date of those subtasks coincided with the end-date of the overall task. The Subtask 1 report, Criteria and Methods for Performing FGD Cost Evaluations, was completed in October 1980. A slightly modified and condensed version of that report appears as appendix B to this report. The Subtask 2 report, FGD Candidate Process Selection, was completed in January 1981, and the principal outputs of that …
Date:
September 1, 1981
Creator:
Bierman, G. R.; May, E. H.; Mirabelli, R. E.; Pow, C. N.; Scardino, C. & Wan, E. I.
System:
The UNT Digital Library
Stability and disturbance of large dc supeconducting magnets
This paper addresses the stability aspects of several successful dc superconducting magnets such as large bubble chamber magnets, and magnets for the Mirror Fusion Test Facility and MHD Research Facility. Specifically, it will cover Argonne National Laboratory 12-Foot Bubble Chamber magnets, the 15-foot Bubble Chamber magnets at Fermi National Laboratory, the MFTF-B Magnet System at Lawrence Livermore National Laboratory, the U-25B Bypass MHD Magnet, and the CFFF Superconducting MHD magnet built by Argonne National Laboratory. All of these magnets are cooled in pool-boiling mode. Magnet design is briefly reviewed. Discussed in detail are the adopted stability criteria, analyses of stability and disturbance, stability simulation, and the final results of magnet performance and the observed coil disturbances.
Date:
January 1, 1981
Creator:
Wang, S. T.
System:
The UNT Digital Library
Swedish nuclear waste efforts
After the introduction of a law prohibiting the start-up of any new nuclear power plant until the utility had shown that the waste produced by the plant could be taken care of in an absolutely safe way, the Swedish nuclear utilities in December 1976 embarked on the Nuclear Fuel Safety Project, which in November 1977 presented a first report, Handling of Spent Nuclear Fuel and Final Storage of Vitrified Waste (KBS-I), and in November 1978 a second report, Handling and Final Storage of Unreprocessed Spent Nuclear Fuel (KBS II). These summary reports were supported by 120 technical reports prepared by 450 experts. The project engaged 70 private and governmental institutions at a total cost of US $15 million. The KBS-I and KBS-II reports are summarized in this document, as are also continued waste research efforts carried out by KBS, SKBF, PRAV, ASEA and other Swedish organizations. The KBS reports describe all steps (except reprocessing) in handling chain from removal from a reactor of spent fuel elements until their radioactive waste products are finally disposed of, in canisters, in an underground granite depository. The KBS concept relies on engineered multibarrier systems in combination with final storage in thoroughly investigated stable geologic …
Date:
September 1, 1981
Creator:
Rydberg, J.
System:
The UNT Digital Library
Analyses of mixed-hydrocarbon binary thermodynamic cycles for moderate-temperature geothermal resources using regeneration techniques
Studies of basic binary geothermal cycles utilizing mixtures of hydrocarbons have shown better performance than for pure fluids for a moderate temperature (360/sup 0/F) resource. However, a loss is net geofluid effectiveness (watt-hours net plant output/1bm geofluid) results when the geofluid outlet temperature is limited to temperatures in excess of 160/sup 0/F to alleviate a silica precipitation problem. This study examined three working fluids consisting of binary mixtures of hydrocarbons to see if use of regenerative preheating techniques such as turbine exhaust recupation and/or turbine bleed could recover the loss in geofluid effectiveness for a 160/sup 0/F geofluid outlet temperature. Results showed that with the most promising of the three working fluids a turbine exhaust recuperator alone is sufficient to recover all the lost effectiveness while maintaining the geofluid outlet temperature at 160/sup 0/F. A brief study to investigate cold weather operation with that working fluid, and using the recuperator, showed no major detrimental response of the system; however, silica precipitation may present a problem in extremely cold weather, as the geofluid outlet temperature dropped below 160/sup 0/F for the lowest wet bulb temperatures studied.
Date:
December 1, 1981
Creator:
Demuth, O. J. & Kochan, R. J.
System:
The UNT Digital Library
Design criteria for a self-actuated shutdown system to ensure limitation of core damage. [LMFBR]
Safety-based functional requirements and design criteria for a self-actuated shutdown system (SASS) are derived in accordance with LOA-2 success criteria and reliability goals. The design basis transients have been defined and evaluated for the CDS Phase II design, which is a 2550 MWt mixed oxide heterogeneous core reactor. A partial set of reactor responses for selected transients is provided as a function of SASS characteristics such as reactivity worth, trip points, and insertion times.
Date:
September 1, 1981
Creator:
Deane, N.A. & Atcheson, D.B.
System:
The UNT Digital Library
System study of an MHD/gas turbine combined-cycle baseload power plant. HTGL report No. 134
The MHD/gas turbine combined-cycle system has been designed specifically for applications where the availability of cooling water is very limited. The base case systems which were studied consisted of an MHD plant with a gas turbine bottoming plant, and required no cooling water. The gas turbine plant uses only air as its working fluid and receives its energy input from the MHD exhaust gases by means of metal tube heat exchangers. In addition to the base case systems, vapor cycle variation systems were considered which included the addition of a vapor cycle bottoming plant to improve the thermal efficiency. These systems required a small amount of cooling water. The MHD/gas turbine systems were modeled with sufficient detail, using realistic component specifications and costs, so that the thermal and economic performance of the system could be accurately determined. Three cases of MHD/gas turbine systems were studied, with Case I being similar to an MHD/steam system so that a direct comparison of the performances could be made, with Case II being representative of a second generation MHD system, and with Case III considering oxygen enrichment for early commercial applications. The systems are nominally 800 MW/sub e/ to 1000 MW/sub e/ in size. …
Date:
August 1, 1981
Creator:
Annen, K.D.
System:
The UNT Digital Library
Passive solar construction handbook
Many of the basic elements of passive solar design are reviewed. The unique design constraints presented in passive homes are introduced and many of the salient issues influencing design decisions are described briefly. Passive solar construction is described for each passive system type: direct gain, thermal storage wall, attached sunspace, thermal storage roof, and convective loop. For each system type, important design and construction issues are discussed and case studies illustrating designed and built examples of the system type are presented. Construction details are given and construction and thermal performance information is given for the materials used in collector components, storage components, and control components. Included are glazing materials, framing systems, caulking and sealants, concrete masonry, concrete, brick, shading, reflectors, and insulators. The Load Collector Ratio method for estimating passive system performance is appended, and other analysis methods are briefly summarized. (LEW)
Date:
August 1, 1981
Creator:
Levy, E.; Evans, D. & Gardstein, C.
System:
The UNT Digital Library
Study of selected off-gases produced during the immobilization of nuclear wastes in the SYNROC process. Final report for year ended December 31, 1981. [Pollucite, CsAlSi/sub 2/O/sub 6/, and barium-cesium hollandite, (Ba,Cs)Al/sub 2/Ti/sub 6/O/sub 16/]
Calculation of possible off-gases expected during the fabrication of SYNROC showed that volatilization of cesium would be a significant problem. Samples of the cesium containing minerals pollucite, CsAlSi/sub 2/O/sub 6/, and barium-cesium hollandite, (Ba,Cs)Al/sub 2/Ti/sub 6/O/sub 16/, were prepared for vaporization studies. Fifteen vaporization runs were made with the hollandite samples. With dry air as the carrier gas, the vapor pressure of cesium over Ba/sub 0/ /sub 8/Cs/sub 0/ /sub 4/Al/sub 2/Ti/sub 6/O/sub 16/ was found to be about 1 x 10/sup -7/ atm at 1050/sup 0/C.
Date:
December 31, 1981
Creator:
Carpenter, J.H.
System:
The UNT Digital Library
National uranium resource evaluation program: hydrogeochemical and stream sediment reconnaissance basic data for Ely quadrangle, Nevada; Utah
Field and laboratory data are presented for 1937 sediment samples from the Ely Quadrangle, Nevada; Utah. The samples were collected by Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.
Date:
October 15, 1981
Creator:
unknown
System:
The UNT Digital Library
Characterization of Open-Cycle Coal-Fired MHD Generators. 16th Quarterly Technical Progress Report, December 16, 1980-March 31, 1981
The successful design of full-scale, open-cycle, coal-fired MHD generators for baseload electrical production requires a detailed understanding of the plasma chemical and plasma dynamic characteristics of anticipated combustor and channel fluids. Progress in efforts to model the efficiency of an open-cycle, coal-fired MHD channel based on the characterization of the channel flow as well as laboratory experiments to validate the modeling effort is reported. In addition, studies related to understanding arcing and corrosion phenomena in the vicinity of an anode are reported.
Date:
May 1, 1981
Creator:
Wormhoudt, J.; Yousefian, V.; Weinberg, M.; Kolb, C.; Martinez-Sanchez, M.; Cheng, W. et al.
System:
The UNT Digital Library
Silicon solar-cell process: development, fabrication, and analysis. Tenth quarterly report, 1 July 1981-30 September 1981
Work has progressed in fabrication and characterization of solar cells from UCP wafers and LASS ribbons. Gettering tests applied to UCP wafers made little change on their performance compared with corresponding baseline data. Advanced processes such as SJ, BSF, and MLAR were also applied. While BSF by Al paste had shunting problems, cells with SJ and BSF by evaporated Al, and MLAR did achieve 14.1% AM1 on UCP silicon. The study of LASS material was very preliminary. Only a few cells with SJ, BSR, (no BSF) and MLAR were completed due to mechanical yield problems after lapping the material. Average efficiency was 10.7% AM1 with 13.4% AM1 for CZ controls. Relatively high minority carrier diffusion lengths were obtained. The lower than expected Jsc could be partially explained by low active area due to irregular sizes.
Date:
January 1, 1981
Creator:
Yoo, H.I.; Iles, P.A. & Leung, D.C.
System:
The UNT Digital Library
Anti W comparisons for A150 plastic-equivalent gases, TE gas, and air
As part of our continuing evaluation of A150 plastic equivalent gases for neutron dosimetry, we have measured ionization ratios which are related to anti W ratios between gases in the p(66)Be(49) neutron beam at Fermilab. Additionally we have extended our earlier measurements (DeLuca, et al., 1980) at the UW gas target /sup 3/H(d,n)/sup 4/He neutron source to include an uncollimated beam geometry with ion chambers close to the target. Observed differences from the earlier results can probably be explained on the basis of neutron spectra, which await further determination.
Date:
January 1, 1981
Creator:
Pearson, D. W.; DeLuca Jr., P. M.; Schell, M. C.; Attix, F. H.; Awschalom, M.; Rosenberg, I. et al.
System:
The UNT Digital Library
Energy and land use
This report addresses the land use impacts of past and future energy development and summarizes the major federal and state legislation which influences the potential land use impacts of energy facilities and can thus influence the locations and timing of energy development. In addition, this report describes and presents the data which are used to measure, and in some cases, predict the potential conflicts between energy development and alternative uses of the nation's land resources. The topics section of this report is divided into three parts. The first part describes the myriad of federal, state and local legislation which have a direct or indirect impact upon the use of land for energy development. The second part addresses the potential land use impacts associated with the extraction, conversion and combustion of energy resources, as well as the disposal of wastes generated by these processes. The third part discusses the conflicts that might arise between agriculture and energy development as projected under a number of DOE mid-term (1990) energy supply and demand scenarios.
Date:
December 1, 1981
Creator:
unknown
System:
The UNT Digital Library
Production of titanium from ilmenite: a review
The general principles for beneficiation of titanium ores are reviewed and the specific processes used in individual units in various countries are discussed. This is followed by a critical evaluation of various current and potential reduction methods for the production of titanium metal from the processed concentrates. Finally, the report outlines a research program for the development of a commercially viable alternative method for the production of titanium metal.
Date:
December 1, 1981
Creator:
Kohli, R.
System:
The UNT Digital Library
Analytical and experimental system studies of combined photovoltaic/thermal systems. Technical status report No. 12, February-March 1981
Progress in the photovoltaic/thermal (PV/T) research program is indicated on a Milestone Chart, and a monthly history of the funds expended is graphed. Technical progress includes computer simulation of crude oil dewatering process, a simplified technique for predicting long term collector performance, PV/T concentrator collector testing, and participation in national standards development. Appended are a paper describing the collector performance calculation technique, a description of the PV/T concentrator, and a report for testing PV/T collectors. (LEW)
Date:
1981-04~
Creator:
unknown
System:
The UNT Digital Library
Probability of pipe fracture in the primary coolant loop of a PWR plant. Volume 9. PRAISE computer code user's manual. Load Combination Program Project I final report
The PRAISE (Piping Reliability Analysis Including Seismic Events) computer code estimates the influence of earthquakes on the probability of failure at a weld joint in the primary coolant system of a pressurized water reactor. Failure, either a through-wall defect (leak) or a complete pipe severance (a large-LOCA), is assumed to be caused by fatigue crack growth of an as-fabricated interior surface circumferential defect. These defects are assumed to be two-dimensional and semi-elliptical in shape. The distribution of initial crack sizes is a function of crack depth and aspect ratio. PRAISE treats the inter-arrival times of operating transients either as a constant or exponentially distributed according to observed or postulated rates. Leak rate and leak detection models are also included. The criterion for complete pipe severance is exceedance of a net section critical stress. Earthquakes of various intensity and arbitrary occurrence times can be modeled. PRAISE presently assumes that exactly one initial defect exists in the weld and that the earthquake of interest is the first earthquake experienced at the reactor. PRAISE has a very modular structure and can be tailored to a variety of crack growth and piping reliability problems. Although PRAISE was developed on a CDC-7600 computer, it was, …
Date:
June 1, 1981
Creator:
Lim, E.Y.
System:
The UNT Digital Library
Assessment of pulverized-coal-fired combustor performance
During the fifth quarterly period of the program, efforts have continued to focus on the analytical tool development and verification task, and on the bench-scale experimental reactor studies for the screening of key combustion variables. In previous quarters, the selection, upgrading and verification of the required furnace heat transfer models have been reported. These models are now fully operational and have been used to complete a series of screening studies to identify those parameters which most significantly affect the thermal performance of combustion systems. In this present period, the multizone furnace heat transfer model has been further refined by the development of a separate but fully coupled submodel for the calculation of char burnout. This aspect of combustor performance is believed to be an important consideration in the conversion of furnaces to coal firing. Char burnout will not only impact the amount of unburned carbon at the stack, but will also affect local heat transfer levels through the extension of heat-release zones and modification of the properties of the radiating species. In the experimental portion of the program, efforts have focused on the modification of the reactor feed system and measurement techniques in order to alleviate problems leading to poor …
Date:
January 1, 1981
Creator:
Richter, W.; Clark, W. & Payne, R.
System:
The UNT Digital Library
MESOI: an interactive Lagrangian trajectory puff diffusion model
MESOI is an interactive Lagrangian trajectory puff diffusion model based on an earlier model by Start and Wendell at the Air Resources Laboratory Field Office at Idaho Falls, Idaho. Puff trajectories are determined using spatially and temporally varying wind fields. Diffusion in the puffs is computed as a function of distance traveled and atmospheric stability. Exposures are computed at nodes of a 31 by 31 grid. There is also provision for interpolation of short term exposures at off-grid locations. This report discusses: the theoretical bases of the model, the numerical approach used in the model, and the sensitivity and accuracy of the model. It contains a description of the computer program and a listing of the code. MESOI is written in FORTRAN. A companion report (Athey, Allwine and Ramsdell, 1981) contains a user's guide to MESOI and documents utility programs that maintain the data files needed by the model.
Date:
December 1, 1981
Creator:
Ramsdell, J.V. & Athey, G.F.
System:
The UNT Digital Library
Cell-module and fuel-conditioner development. 8th quarterly report, July-September 1981
Progress on the second Phase of a six Phase program to develop commercially viable on-site integrated energy systems (OS/IES) using phosphoric acid fuel cell (PAFC) modules to convert fuel to electricity is reported. Phase II is a planned two year effort to develop appropriate fuel cell module and fuel conditioner conceptual designs. The fuel cell module development effort comprises three coordinated tasks: (1) design of large cell stacks; (2) stack fabrication; and (3) stack testing. The results of pretesting and performance testing of Stack 564 are reported. The pretesting was done in the new 2 kW loop at ERC. The design features, progress in fabrication and plans for assembly of Stack 800 are given. The status of endurance testing of Stack 560 is reported. The design, fabrication, test procedures and preliminary tests of the 10 kW counterflow reformer and the reformer test stand are described. Results of vendor contacts to define the performance and cost of fuel conditioning system components are reported, and the results of burner tests and continuing development of the BOLTAR program are reported. (WHK)
Date:
October 1, 1981
Creator:
Hoover, Jr., D. Q.
System:
The UNT Digital Library
Reconnaissance of the Hot Springs Mountains and adjacent areas, Churchill County, Nevada
A geological reconnaissance of the Hot Springs Mountains and adjacent areas, which include parts of the Brady-Hazen and the Stillwater-Soda Lake Known Geothermal Resource Areas (KGRA's), resulted in a reinterpretation of the nature and location of some Basin and Range faults. This reconnaissance took place during June-December 1975. In addition, the late Cenozoic stratigraphy has been modified, chiefly on the basis of radiometric dates of volcanic rocks by US Geological Survey personnel and others. The Hot Springs Mountains are in the western part of the Basin and Range province, which is characterized by east-west crustal extension and associated normal faulting. In the surrounding Trinity, West Humboldt, Stillwater, and Desert Mountains, Cenozoic rocks overlie basement rocks of Paleozoic and Mesozoic age. A similar relation is inferred in the Hot Springs Mountains. Folding and faulting have taken place from the late Tertiary to the present.
Date:
January 1, 1981
Creator:
Voegtly, N.E.
System:
The UNT Digital Library
Synthetic inactivators of kallikrein
Reagents were developed which bind covalently to side chains of kallikrein, thereby inactivating the enzyme. Both temporary and irreversible inhibitors have been synthesized. (ACR)
Date:
January 1, 1981
Creator:
Shaw, E.
System:
The UNT Digital Library