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Development and testing of an industrial scale coal fired slagging combustion system, Phase 3. Task 2.1, Preliminary systems test plan

Description: The planned effort for the task 2 tests has four major objectives. They are computer controlled combustor operation, optimization of SO2 reduction, combustor materials durability, and testing focused on application to industrial coal fired boilers. Several major advances in the combustor development have occurred since this original plan was proposed in 1991. Some of these advances occurred in tests performed in a project that was completed in June 1992, while others occurred during the design … more
Date: September 11, 1992
Partner: UNT Libraries Government Documents Department
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Analysis of HFIR pressurizer pump overspeed transients and relief valve performance

Description: The pressurizer pump overspeed transients at the High Flux Isotope Reactor (HFIR) fall in the category of {open_quotes}increase in coolant inventory transients.{close_quotes} They are among the accident transients to be performed for Chapter 15 of the HFIR safety analysis report (SAR). The pressurizer pump speed starting to increase inadvertently to reach its maximum speed of 3,560 rpm while the reactor operates under normal conditions is the cause of this transient. Increased primary coolant s… more
Date: September 11, 1992
Creator: Sozer, M. C.
Partner: UNT Libraries Government Documents Department
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Establishment of a viable population of red-cockaded woodpeckers at the Savannah River Site. Annual report, FY1992

Description: The Southeastern Forest Experiment Station (SEFES) began research on the red-cockaded woodpecker (RCW) on the Savannah River Site (SRS) in 1985 with the objective of restoring a viable population. This Project is conducted in cooperation with the Department of Energy, the Savannah River Forest Station (SRFS) and the Savannah River Ecology Laboratory. The program has consisted of two phases. The stabilization phase (1985--1987) focused on preventing the immediate extirpation of the RCW populatio… more
Date: September 11, 1992
Creator: Laves, K. S.
Partner: UNT Libraries Government Documents Department
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Design, synthesis, and characterization of novel fine-particle, unsupported catalysts for coal liquefaction. Technical progress report, April 26, 1991--July 26, 1991: Draft

Description: A series of carbonyl-based homogeneous catalyst precursors has been prepared. These species include: Fe(CO){sub 4}PPh{sub 3}, Fe(CO){sub 3}(PPh{sub 3}){sub 2}, Fe(CO){sub 2}(PPh{sub 3}){sub 2}CS{sub 2}, S{sub 2}Fe{sub 2}(CO){sub 6}, S{sub 2}Fe{sub 3}(CO){sub 9}. Fe(CO){sub 4}PPh{sub 3} was prepared by a combined photochemical and thermal route from triphenylphosphine (PPh{sub 3}) in iron pentacarbonyl (Fe(CO){sub 5}). This preparation procedure, which is selective to the monosubstituted product… more
Date: September 11, 1991
Creator: Klein, M. T.
Partner: UNT Libraries Government Documents Department
open access

Aluminum hydroxide coating thickness measurements and brushing tests on K West Basin fuel elements

Description: Aluminum hydroxide coating thicknesses were measured on fuel elements stored in aluminum canisters in K West Basin using specially developed eddy current probes . The results were used to estimate coating inventories for MCO fuel,loading. Brushing tests successfully demonstrated the ability to remove the coating if deemed necessary prior to MCO loading.
Date: September 11, 1998
Creator: Pitner, A. L.
Partner: UNT Libraries Government Documents Department
open access

Equilibrium and volumetric data and model development for coal fluids. [Quarterly report], April 15, 1991--July 15, 1991

Description: During the present reporting period, experimental measurements were obtained on the solubility of carbon monoxide (CO) in selected hydrocarbons using our static type equilibrium cell. Binary mixtures involving CO + n-eicosane (n-C{sub 20}), n-octacosane (n-C{sub 28}), and n-hexatricontane (n-C{sub 36}) were studied at temperatures from 323.2 to 423.2 K and pressures to 104 bar. These data were analyzed using the Soave-Redlich-Kwong and Peng-Robinson equations of state. While a single interactio… more
Date: September 11, 1991
Creator: Robinson, R. L. Jr. & Gasem, K. A. M.
Partner: UNT Libraries Government Documents Department
open access

Coal desulfurization in a rotary kiln combustor. Final report, March 15, 1990--July 31, 1991

Description: The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed versio… more
Date: September 11, 1992
Creator: Cobb, J. T., Jr.
Partner: UNT Libraries Government Documents Department
open access

X-ray diffraction measurement of residual stresses in delta plutonium

Description: Residual stresses in delta plutonium can be measured by the x-ray diffractometer method. This was accomplished with the aid of an experimental tantalum x-ray target. Preliminary experiments are encouraging and indicate that stresses may be determined precisely and rapidly. Future work will involve determination of x-ray elastic constants, instrument calibration with stress-free standards, higher x-ray power and more sophisticated monochromatization methods. 4 refs., 4 figs., 1 tab.
Date: September 11, 1990
Creator: Steinmeyer, P.A.
Partner: UNT Libraries Government Documents Department
open access

Mathematical modelling of part voltage and weld current in resistance welders

Description: A mathematical model is presented to describe the part voltage and weld current that occur in a single-phase resistance welder. Developing an accurate model of part voltage and current is the first step toward understanding instrumentation, testing, calibration, and measurement requirements. Measurement requirements for dynamic part resistance, calculated from these basic process variables, can ultimately be determined using this analysis. This model utilizes electrical characteristics of the w… more
Date: September 11, 1990
Creator: Destefan, D.E.
Partner: UNT Libraries Government Documents Department
open access

Photoionization and electron transfer in ionic crystals

Description: Three lines of work have been completed since our previously submitted proposal. These are: spectroscopy of Ce{sup 3+} {minus} Na{sup +} pairs in CaF{sub 2} and SrF{sub 2}, photoionization studies of Sm{sup 2+}, Eu{sup 2+} and Yb{sup 2+} in CaF{sub 2} and SrF{sub 2}; and infrared-detected two-photon spectroscopy of MgO:Ni{sup 2+}, and other two-photon spectroscopy studies. These are discussed in this report.
Date: September 11, 1990
Creator: McClure, D.S.
Partner: UNT Libraries Government Documents Department
open access

An information-theoretic look at branch-prediction

Description: Accurate branch-prediction is necessary to utilize deeply pipelined and Very Long Instruction-Word (VLIW) architectures. For a set of program traces we show the upper limits on branch predictability, and hence machine utilization, for important classes of branch-predictors using static (compiletime) and dynamic (runtime) program information. A set of optimal superpredictors'' is derived from these program traces. These optimal predictors compare favorably with other proposed methods of branch-p… more
Date: September 11, 1990
Creator: Ponder, C.G. (Lawrence Livermore National Lab., CA (USA)) & Shebanow, M.C. (Motorola, Inc., Austin, TX (USA))
Partner: UNT Libraries Government Documents Department
open access

Coal desulfurization in a rotary kiln combustor

Description: The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed versio… more
Date: September 11, 1992
Creator: Cobb, J. T., Jr.
Partner: UNT Libraries Government Documents Department
open access

Autoionization of Be-like ions following double electron capture in C sup 4+ , O sup 6+ and Ne sup 8+ ions

Description: This paper describes electron emission following the autoionization of doubly excited states in Be-like ions. The Be-like Auger states are produced by two electron capture in slow C{sup 4+}, O{sup 6+} and Ne{sup 8+} ions. These measurements were performed by means of high resolution Auger electron spectroscopy on different target gases and at different projectile energies. Line assignments and relative cross sections are given for the investigated doubly excited states and the excitation mechan… more
Date: September 11, 1990
Creator: McDonald, J.W.
Partner: UNT Libraries Government Documents Department
open access

Equilibrium and volumetric data and model development for coal fluids

Description: During the present reporting period, experimental measurements were obtained on the solubility of carbon monoxide (CO) in selected hydrocarbons using our static type equilibrium cell. Binary mixtures involving CO + n-eicosane (n-C{sub 20}), n-octacosane (n-C{sub 28}), and n-hexatricontane (n-C{sub 36}) were studied at temperatures from 323.2 to 423.2 K and pressures to 104 bar. These data were analyzed using the Soave-Redlich-Kwong and Peng-Robinson equations of state. While a single interactio… more
Date: September 11, 1991
Creator: Robinson, R. L. Jr. & Gasem, K. A. M.
Partner: UNT Libraries Government Documents Department
open access

Separation of products from mild coal gasification processes

Description: The primary mild coal gasification product mixture containing noncondensible gas, high-boiling hydrocarbon vapors and entrained fines is difficult to process into the desired pure products: gas, liquids, and dry solids. This challenge for mild coal gasification process development has been studied by surveying the technical literature for suitable separations processes and for similar issues in related processes. The choice for a first-stage solids separation step is standard cyclones, arranged… more
Date: September 11, 1991
Creator: Wallman, P. H.
Partner: UNT Libraries Government Documents Department
open access

Design, synthesis, and characterization of novel fine-particle, unsupported catalysts for coal liquefaction

Description: A series of carbonyl-based homogeneous catalyst precursors has been prepared. These species include: Fe(CO){sub 4}PPh{sub 3}, Fe(CO){sub 3}(PPh{sub 3}){sub 2}, Fe(CO){sub 2}(PPh{sub 3}){sub 2}CS{sub 2}, S{sub 2}Fe{sub 2}(CO){sub 6}, S{sub 2}Fe{sub 3}(CO){sub 9}. Fe(CO){sub 4}PPh{sub 3} was prepared by a combined photochemical and thermal route from triphenylphosphine (PPh{sub 3}) in iron pentacarbonyl (Fe(CO){sub 5}). This preparation procedure, which is selective to the monosubstituted product… more
Date: September 11, 1991
Creator: Klein, M.T.
Partner: UNT Libraries Government Documents Department
open access

Pesticide Legislation: Food Quality Protection Act of 1996 (P.L. 104-170)

Description: This report discusses the 104th Congress' significant changes to the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) governing the U.S. sale and use of pesticide products, and the Federal Food, Drug, and Cosmetic Act (FFDCA), which limits presticide residues on food, made under the "Food Quality Protection Act of 1996" (FQPA).
Date: September 11, 1998
Creator: Schierow, Linda-Jo
Partner: UNT Libraries Government Documents Department
open access

Hanford Site liquid waste acceptance criteria

Description: This document provides the waste acceptance criteria for liquid waste managed by Waste Management Federal Services of Hanford, Inc. (WMH). These waste acceptance criteria address the various requirements to operate a facility in compliance with applicable environmental, safety, and operational requirements. This document also addresses the sitewide miscellaneous streams program.
Date: September 11, 1999
Creator: Lueck, K. J.
Partner: UNT Libraries Government Documents Department
open access

Estimation of Damage Preference From Strike Parameters

Description: Estimation of an opponent's damage preference is illustrated by discussing the sensitivity of stability indices and strike parameters to it and inverting the results to study the sensitivity of estimates to uncertainties in strikes. Costs and stability indices do not generally have the monotonicity and sensitivity needed to support accurate estimation. First and second strikes do. Second strikes also have proportionality, although they are not unambiguously interpretable. First strikes are obse… more
Date: September 11, 1998
Creator: Canavan, G. H.
Partner: UNT Libraries Government Documents Department
open access

Final report. Superconducting materials

Description: Our group has discovered a many body effect that explains the surprising divergence of the spin susceptibility which has been measured by neutron scattering experiments on high temperature superconductors and vanadium oxide metals. Electron interactions on nested - i.e., nearly parallel paths - have been analyzed extensively by our group, and such processes provide a physical explanation for many anomalous features that distinguish cuprate superconductors from ordinary metals.
Date: September 11, 1999
Creator: Ruvalds, John
Partner: UNT Libraries Government Documents Department
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