100 Matching Results

Search Results

Results: 1 - 24 next
open access

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, April 1-June 30, 1982

Description: The overall objective of the Westinghouse coal gasification program is to demonstrate the viability of the Westinghouse pressurized, fluidized bed, gasification system for the production of medium-Btu fuel gas for syngas, electrical power generation, chemical feedstocks, or industrial fuels and to obtain performance and scaleup data for the process and hardware. Progress reports are presented for the following tasks: (1) operation and maintenance of the process development unit (PDU); (2) proce… more
Date: October 21, 1982
Partner: UNT Libraries Government Documents Department
open access

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, October 1-December 31, 1982

Description: The overall objective of the Westinghouse coal gasification program is to demonstrate the viability of the Westinghouse pressurized, fluidized bed, gasification system for the production of medium-Btu fuel gas for syngas, electrical power generation, chemical feedstocks, or industrial fuels and to obtain performance and scaleup data for the process and hardware. Progress reports are presented for the following tasks: (1) operation and maintenance of the process development unit (PDU); (2) proce… more
Date: April 21, 1983
Partner: UNT Libraries Government Documents Department
open access

Environmental studies group. Annual report for 1978

Description: Group projects included radioecological studies of aquatic and terrestrial systems, land management activities, foodstuff monitoring, dust transport studies including fugitive dust measurements and modeling, and several support programs involving evaluation of the plant's ambient air samplers and airborne tritium monitoring techniques. Some salient results from the several project reports include determination of an appropriate model for mechanically generated fugitive dust dispersion, a r… more
Date: August 21, 1980
Creator: Hunt, D. C. & Hurley, J. D.
Partner: UNT Libraries Government Documents Department
open access

Annual environmental monitoring report: calendar year 1981

Description: The environment locally surrounding Mound was monitored primarily for tritium and plutonium-238. The results are reported for CY-1981. The environmental medium analyzed included air, water, vegetation, foodstuffs, and sediment. The average concentrations of plutonium-238 and tritium were within the applicable standards (adopted by the US DOE) for radioactive species.
Date: April 21, 1982
Creator: Farmer, B. M. & Carfagno, D. G.
Partner: UNT Libraries Government Documents Department
open access

Preliminary planning study for safety relief valve experiments in a Mark III BWR pressure suppression system

Description: In response to a request from the Water Reactor Safety Research Division of the US NRC, a preliminary study is provided which identifies key features and consideration involved in planning a comprehensive in-plant Safety Relief Valve experimental program for a Mark III containment design. The report provides identification of program objectives, measurement system requirements, and some details quantifying expected system response. In addition, a preliminary test matrix is outlined which involv… more
Date: April 21, 1980
Creator: McCauley, E.W. & Holman, G.S.
Partner: UNT Libraries Government Documents Department
open access

Interim report: studies of boron deposition near geothermal power plants

Description: Measurements in the Geysers area from April until October 1979 when the onset of seasonal rains limited field work are presented. Field studies involved the following three basic types of measurements: cooling tower drift deposition, plant ecological studies, and animal population studies. Brief summaries of the data are presented to demonstrate the types of information obtained. (MHR)
Date: April 21, 1980
Creator: Koranda, J.J.
Partner: UNT Libraries Government Documents Department
open access

Lawrence Livermore National Laboratory underground coal gasification data base. [US DOE-supported field tests; data]

Description: The Department of Energy has sponsored a number of field projects to determine the feasibility of converting the nation's vast coal reserves into a clean efficient energy source via underground coal gasification (UCG). Due to these tests, a significant data base of process information has developed covering a range of coal seams (flat subbituminous, deep flat bituminous and steeply dipping subbituminous) and processing techniques. A summary of all DOE-sponsored tests to data is shown. The … more
Date: August 21, 1981
Creator: Cena, R. J. & Thorsness, C. B.
Partner: UNT Libraries Government Documents Department
open access

Modal photon densities

Description: The short wavelength laser code XRASER uses line raidation fields whose dimensions are photons/mode. In this document, we discuss modal photon densities and provide formulas relating these units to units more familiar to the LLNL community.
Date: June 21, 1982
Creator: Hagelstein, P.L.
Partner: UNT Libraries Government Documents Department
open access

Linear induction accelerator parameter options

Description: The principal undertaking of the Beam Research Program over the past decade has been the investigation of propagating intense self-focused beams. Recently, the major activity of the program has shifted toward the investigation of converting high quality electron beams directly to laser radiation. During the early years of the program, accelerator development was directed toward the generation of very high current (>10 kA), high energy beams (>50 MeV). In its new mission, the program has shifted… more
Date: April 21, 1986
Creator: Birx, D.L.; Caporaso, G.J. & Reginato, L.L.
Partner: UNT Libraries Government Documents Department
open access

X-ray diffraction study of reversible deformation mechanisms in the aged uranium-6. 5 niobium alloy

Description: The x-ray diffraction (XRD) data from 200/sup 0/C/2h-aged uranium-6.5 wt % niobium (U-6.5Nb) alloys, taken under stress as a function of strain, revealed a gamma-zero (..gamma../sup 0/)..-->.. alpha prime-prime (..cap alpha..'') thermoelastic martensitic phase transformation. It was concluded that the primary reversible deformation modes consisted of the movement of ..gamma../sup 0//..cap alpha..'' interphase interfaces and ..cap alpha..'' intervariant interfaces. Specimen elasticity at low str… more
Date: June 21, 1985
Creator: Carpenter, D.A.
Partner: UNT Libraries Government Documents Department
open access

Relief valve sizing for the sup 3 He recirculation system of the MP-9 polarized target

Description: This report contains pressure safety analyses for the relief valving of the {sup 3}He pump system, as distinct from the dilution refrigerator (DR). However, in a few instances it has been convenient to include here some aspects of the interaction between the DR and the gas loop proper. The more localized safety aspects of certain elements of the DR, such as the vacuum jacket and window, the Still, and the Phase Separator, will be addressed in a separate analysis.
Date: August 21, 1989
Creator: Hill, D.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of refractory materials for a nuclear waste incinerator

Description: An experiment to find a suitable refractory lining for a nuclear waste incinerator has been completed. Eleven brick and six castable products were analyzed by optical and scanning microscopy. All the materials were fashioned into cup shapes and subjected to temperatures ranging from 800 to 1200/sup 0/C for as long as six weeks. Some of the cups were charged weekly with pellets made from ash materials that would contact an incinerator liner. Refractory products containing a high percentage of al… more
Date: July 21, 1980
Creator: Grotzky, V. K.; Kneale, P. A. & Teter, A. R.
Partner: UNT Libraries Government Documents Department
open access

Literature search for the non-aqueous separation of zinc from fuel rod cladding. [After dissolution in liquid metal]

Description: This report reviews the literature of processes for the nonaqueous separation of zinc from dissolved fuel assembly cladding. The processes considered were distillation, pyrochemical processing, and electrorefining. The last two techniques were only qualitatively surveyed while the first, distillation, was surveyed in detail. A survey of available literature from 1908 through 1978 on the distillation of zinc was performed. The literature search indicated that a zinc recovery rate in excess of 95… more
Date: June 21, 1980
Creator: Sandvig, R. L.; Dyer, S. J.; Lambert, G. A. & Baldwin, C. E.
Partner: UNT Libraries Government Documents Department
open access

New developments in measurement technology relevant to the studies of deep geological repositories in domed salt and basalt

Description: This report briefly describes recent geophysical and geotechnical instrumentation developments relevant to the studies of deep geologic repositories. Special emphasis has been placed on techniques that appear to minimize measurement problems associated with repositories constructed in basalt or domed salt. Included in the listing are existing measurement capabilities and deficiencies that have been identified by a few authors and instrumentation workshops that have assessed the capabilities of … more
Date: May 21, 1980
Creator: Ramirez, A.L. & Mao, N.H.
Partner: UNT Libraries Government Documents Department
open access

Silicon-on ceramic process: silicon sheet growth and device development for the large-area silicon sheet task of the Low-Cost Solar Array Project. Quarterly report No. 14, January 1-March 31, 1980

Description: The purpose of this research program is to investigate the technical and economic feasibility of producing solar-cell-quality sheet silicon by coating inexpensive ceramic substrates with a thin layer of polycrystalline silicon. The coating methods to be developed are directed toward a minimum-cost process for producing solar cells with a terrestrial conversion efficiency of 11% or greater. By applying a graphite coating to one face of a ceramic substrate, molten silicon can be made to wet only … more
Date: April 21, 1980
Creator: Whitehead, A B; Zook, J D; Grung, B L; McHenry, K; Schuldt, S B & Chapman, P W
Partner: UNT Libraries Government Documents Department
open access

Hydrogen absorption by YNi/sub 5/, LaPt/sub 5/, and ThNi/sub 5/ intermetallics

Description: The absorption of H by YNi/sub 5/, LaPt/sub 5/ and ThNi/sub 5/ at pressures above those reported in the literature were studied. These alloys were reported to absorb no significant H/sub 2/ at low pressures. (FS)
Date: February 21, 1980
Creator: Lakner, J. F. & Takeshita, T.
Partner: UNT Libraries Government Documents Department
open access

Mathematical model of a utility firm. Executive summary

Description: The project was aimed at developing an understanding of the economic and behavioral processes that take place within a utility firm, and without it. This executive summary, one of five documents, gives the project goals and objectives, outlines the subject areas of investigation, discusses the findings and results, and finally considers applications within the electric power industry and future research directions. (DLC)
Date: August 21, 1983
Partner: UNT Libraries Government Documents Department
open access

Investigation report of the release of strontium-90 from the Building 3517 Cell Ventilation Improvements construction site on November 29, 1985

Description: This Type B Investigative Report provides an evaluation of all relevant events and activities that led to, were an integral part of, and subsequently resulted from ORNL's November-December 1985 strontium-90 release incident. The impacts were evaluated in terms of radiological doses to ORNL and Rust employees associated with the incident, ORGDP employees who consumed potable water potentially impacted by the incident, and Kingston, Tennessee, residents who also consumed potable water potentially… more
Date: January 21, 1986
Partner: UNT Libraries Government Documents Department
open access

Tevatron damper system

Description: A fast beam damper system is currently being built for the Tevatron. The system is similar to the Super Damper system in the main ring with increased bandwidth and a pulsed high power mode for injection errors. The purpose of this writeup is to describe the basics of the system, and some of the reasoning behind its design. Calculations of expected performance are also included.
Date: December 21, 1983
Creator: Moore, C. & Rice, R.
Partner: UNT Libraries Government Documents Department
open access

Aluminum and polymeric coatings for protection of uranium

Description: Ion-plated aluminum films on uranium will not provide adequate protection for 25 years. Magnetron-plated aluminum films on uranium are much better than ion-plated ones. Kel-F 800 films on uranium can provide adequate protection for 25 years. Their use in production must be delayed until the following factors are sorted out: water permeability in Kel-F 800 must be determined between 30 and 60/sup 0/C; the effect of UF/sub 3/, at the Kel-F/metal interface, on the permeability of water must be ass… more
Date: December 21, 1983
Creator: Colmenares, C.; McCreary, T.; Monaco, S.; Walkup, C.; Gleeson, G.; Kervin, J. et al.
Partner: UNT Libraries Government Documents Department
open access

The Phase 3---Efficient lighting for US Naval ships

Description: The first two phases of this program developed a lighting system that improved the system efficacy from 46 lm/w to 58 lm/w. In addition, the a power factor of 90% was attained which reduced the supply current by 46% as well as reducing the harmonic content below 3%. This system is being demonstrated on board a ship for final acceptance, and is expected to be employed on newly constructed ships. Phase 3 of this program explores the development of a still more efficient lighting system, in which … more
Date: January 21, 1988
Creator: Verderber, R.R.
Partner: UNT Libraries Government Documents Department
open access

Process gas and steam-electric system parameters and advanced reformer concept guidelines for 850/sup 0/C IDC and 950/sup 0/C monolithic HTGR concepts

Description: The following is a description of the endeavors being pursued at ARSD as potential means of directly reducing the reformer plant and/or product costs. Three broad areas are currently under evaluation to achieve the cost reduction objectives and they include: (1) reduced reformer cost by simplifying the design, (2) improving thermochemical performance by enhanced heat transfer and catalyst activity, and (3) modification of process condition assumptions.
Date: January 21, 1982
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen