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Methane oxidation over dual redox catalysts (open access)

Methane oxidation over dual redox catalysts

Review and analysis of the literature data on electron transfer itself and electron transfer oxidation of alkyl radicals was done in order to understand the mechanism by which methyl radical can be oxidized to CH{sub 3}{sup +} and further substituted by OH{sup {minus}} to form methanol. This allowed to compare and classify the various possible reaction patterns, understand the mechanism and circumstances of operation of each of them and select those which can be involved in oxidation of methyl radical. As a result an approach that is complementary to catalytic test studies was proposed. It consists of investigation of a set of partial reactions which reproduce a whole catalytic cycle in order to prove the reaction mechanism. Synthesis of new oxide catalysts of the delafossite type, containing concentrated double redox sites, were designed. Synthesis of hydrozincite as a starting material for the preparation of doubly doped zinc oxide was performed.
Date: March 1, 1989
Creator: Klier, Kamil; Herman, Richard G. & Sojka, Zvigniew
System: The UNT Digital Library
LIMB Demonstration Project Extension (open access)

LIMB Demonstration Project Extension

The basic goal of the Limestone Injection Multistage Burner (LIMB) demonstration is to extend LIMB technology development to a full- scale application on a representative wall-fired utility boiler. The successful retrofit of LIMB to an existing boiler is expected to demonstrate that (a) reductions of 50 percent or greater in SO{sub x} and NO{sub x} emissions can be achieved at a fraction of the cost of add-on FGD systems, (b) boiler reliability, operability, and steam production can be maintained at levels existing prior to LIMB retrofit, and (c) technical difficulties attributable to LIMB operation, such as additional slagging and fouling, changes in ash disposal requirements, and an increased particulate load, can be resolved in a cost-effective manner. The primary fuel to be used will be an Ohio bituminous coal having a nominal sulfur content of 3 percent or greater.
Date: March 15, 1989
Creator: unknown
System: The UNT Digital Library
Pulse atmospheric fluidized bed combustion (open access)

Pulse atmospheric fluidized bed combustion

The overall objective of the program is the development of a pulsed atmospheric fluidized-bed combustion (PAFBC) technology to burn coal and to provide heat and steam to commercial, institutional, and small industrial applications at a reasonable price in an environmentally acceptable manner. During this reporting period, a total of eight shakedown and debugging coal combustion tests were performed in the AFBC. A start-up procedure was established, system improvements implemented, and preliminary material and heat balances made based on these tests. The pulse combustor for the AFBC system was fabricated and installed and a series of tests was conducted on the system. 17 figs., 5 tabs.
Date: March 1, 1989
Creator: unknown
System: The UNT Digital Library
L-star pulsed coal combustor for residential space heating (open access)

L-star pulsed coal combustor for residential space heating

This quarter, substantial improvement in the coal carbon conversion was achieved. Specifically, for a scaled-down version of the residential combustor, coal carbon conversions exceeding 97 percent were realized, when utilizing methane as carrier gas for the coal. Design changes include insulation of the combustor, introduction of a flame holder, combustion air preheat and presence of an obstructing plate at the combustor exhaust port. Only the first two changes contributed towards substantial improvement in coal conversion. In addition, monitoring of CH{sub 4} concentration in the exhaust gases gave a real time indication of the combustor performance. Finally, the results of experiments performed in this quarter contributed to design changes that have led to a combustor that has achieved the program goal of > 99 percent conversion of coal carbon. 5 figs., 2 tabs.
Date: March 1, 1989
Creator: unknown
System: The UNT Digital Library
Japanese Refrigerators Field Testing. (open access)

Japanese Refrigerators Field Testing.

Residential refrigerators consume the equivalent of 1700 megawatts (MW) of baseload power in the Bonneville Power Administration (BPA) service area. Japanese manufacturers have designed refrigerator units that appear more energy efficient than some currently available American models. This report summarizes preliminary findings from field testing of 12 refrigerators of Japanese manufacture to evaluate annual kilowatt hour (kWh) use during actual operation. The units have also undergone laboratory testing sponsored by BPA at ETL Testing Laboratories, Inc. in Cortland, New York. A final report of the project -- due at the end of 1989 -- will correlate in detail the results of field and laboratory tests in comparison to performance ratings determined by the manufacturer.
Date: March 1, 1989
Creator: Lou, Albert T.
System: The UNT Digital Library
Final focus test beam alignment: A draft proposal (open access)

Final focus test beam alignment: A draft proposal

The Final Focus Test Beam is a transport line designed to transmit 50 GeV electron beams of SLC emittance (3 {times} 10{sup {minus}10} radian-meters) straight through the central arm of the Beam Switchyard (BSY C line) with a final focus point out in the Research Yard but relatively near the end of the switchyard tunnel. The hardware, methods and procedures outlined in this proposal are dedicated to measuring the placement of mechanical objects with respect to certain defined geometric axes. We wish to emphasize that the very difficult problems of locating the effective magnetic axes of focusing elements, the effective electrical center of beam position monitors and even the effective axis of the incident beam relative to mechanical reference surfaces is outside the scope of this work. Further, this proposal is restricted to the act of measurement and does not consider the vital task of on-line mechanical repositioning of elements that will, in likelihood, be called upon during operation of the system. 16 refs., 16 figs., 4 tabs.
Date: March 1, 1989
Creator: Fischer, G. E. & Ruland, R. E.
System: The UNT Digital Library
Finding the magnetic center of a quadrupole to high resolution: A draft proposal (open access)

Finding the magnetic center of a quadrupole to high resolution: A draft proposal

In a companion proposal it is proposed to align quadrupoles of a transport line to within transverse tolerances of 5 to 10 micrometers. Such a proposal is meaningful only if the effective magnetic center of such lenses can in fact be repeatably located with respect to some external mechanical tooling to comparable accuracy. It is the purpose of this note to describe some new methods and procedures that will accomplish this aim. It will be shown that these methods are capable of yielding greater sensitivity than the more traditional methods used in the past. The notion of the nodal'' point is exploited. 4 refs., 5 figs., 1 tab.
Date: March 1, 1989
Creator: Fischer, G.E.; Cobb, J.K. & Jensen, D.R.
System: The UNT Digital Library
Enhanced durability and reactivity for zinc ferrite desulfurization sorbent (open access)

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-scale, fixed-bed reactor. Durability may be defined as the ability of the sorbent to maintain important physical characteristics such As size, strength, and specific surface area during 10 cycles of sulfidation and oxidation.
Date: March 6, 1989
Creator: Jha, M. C. & Berggren, M. H.
System: The UNT Digital Library
Secondary atomization of single coal-water fuel droplets (open access)

Secondary atomization of single coal-water fuel droplets

The evaporative behavior of single, well characterized droplets of a lignite coal-water slurry fuel (CWSF) and a carbon black in water slurry was studied as a function of heating rate and droplet composition. Induced droplet heating rates were varied from 0 to 10{sup 5} K/s. Droplets studied were between 97 and 170 {mu}m in diameter, with compositions ranging from 25 to 60% solids by weight. The effect of a commercially available surfactant additive package on droplet evaporation rate, explosive boiling energy requirements, and agglomerate formation was assessed. Surfactant concentrations were varied from none to 2 and 4% by weight solution (1.7 and 3.6% by weight of active species on a dry coal basis). The experimental system incorporated an electrodynamic balance to hold single, free droplets, a counterpropagating pulsed laser heating arrangement, and both video and high speed cinematographic recording systems. Data were obtained for ambient droplet evaporation by monitoring the temporal size, weight, and solids concentration changes. 49 refs., 31 figs.
Date: March 1, 1989
Creator: Hassel, G. R. & Scaroni, A. W.
System: The UNT Digital Library
Vibration analysis of APS magnet/support systems based on the finite element method (open access)

Vibration analysis of APS magnet/support systems based on the finite element method

Prediction of the dynamic response of APS magnet/support systems requires knowledge of the free vibrational characteristics, including natural frequencies, modes, and modal damping ratios. A preliminary dynamic analysis of the magnet/support system of a typical section of the APS storage ring, as presented in the APS Conceptual Design Report, was performed to gain insight. The preliminary analysis is based on the assumption that the support girder could be considered rigid relative to the stiffness of the pedestal supports when considering the lower modes and frequencies. Further, only the vertical (in-plane) translational and rocking modes were studied. The subject analysis was performed to include the flexibility of the support girder and to investigate the horizontal (out-of-plane) modes as well. Also, the most up-to-date design of the five magnet sections are studied. Here, it should be noted that in the latest design the positioning of the support pedestals (jack-screws) is different from that in the conceptual design.
Date: March 6, 1989
Creator: Chen, S.S. & Wambsganss, M.W.
System: The UNT Digital Library
Minidoka Dam Wildlife Impact Assessment: Final Report. (open access)

Minidoka Dam Wildlife Impact Assessment: Final Report.

A wildlife impact assessment has been developed for the US Bureau of Reclamation's Minidoka Dam and Reservoir in south central Idaho. This assessment was conducted to fulfill requirements of the Fish and Wildlife Program. Specific objectives of this study included the following: select target wildlife species, and identify their current status and management goals; estimate the net effects on target wildlife species resulting from hydroelectric development and operation; recommend protection, mitigation, and enhancement goals for target wildlife species affected by hydroelectric development and operation; and consult and coordinate impact assessment activities with the Northwest Power Planning Council, Bonneville Power Administration, US Bureau of Reclamation, Bureau of Land Management, Shoshone-Bannock Tribes, US Fish and Wildlife Service, Pacific Northwest Utilities Conference Committee, and other entities expressing interest in the project. 62 refs., 2 figs., 11 tabs.
Date: March 1, 1989
Creator: Martin, Robert C. & Meuleman, G. Allyn
System: The UNT Digital Library
Joint application of AI techniques, PRA and disturbance analysis methodology to problems in the maintenance and design of nuclear power plants (open access)

Joint application of AI techniques, PRA and disturbance analysis methodology to problems in the maintenance and design of nuclear power plants

This final report summarizes the accomplishments of a two year research project entitled Joint Application of Artificial Intelligence Techniques, Probabilistic Risk Analysis, and Disturbance Analysis Methodology to Problems in the Maintenance and Design of Nuclear Power Plants. The objective of this project is to develop and apply appropriate combinations of techniques from artificial intelligence, (AI), reliability and risk analysis and disturbance analysis to well-defined programmatic problems of nuclear power plants. Reactor operations issues were added to those of design and maintenance as the project progressed.
Date: March 1, 1989
Creator: Okrent, D.
System: The UNT Digital Library
Report on the Lake Arrowhead workshop on advanced acceleration concepts (open access)

Report on the Lake Arrowhead workshop on advanced acceleration concepts

We review the present status of the field of New Acceleration Concepts, as presented at the Lake Arrowhead workshop, held at the beginning of 1989. Many new and promising results have been obtained recently, and the field is actively developing. We discuss briefly some of the main results presented at the workshop. 43 refs., 2 tabs.
Date: March 1, 1989
Creator: Pellegrini, C.
System: The UNT Digital Library
Minimal Technologies Application Project: Planning and installation (open access)

Minimal Technologies Application Project: Planning and installation

Intensive and continuous tactical training during the last 35 years at the Hohenfels Training Area in West Germany has caused the loss of vegetative ground cover and has accelerated soil erosion rates, resulting in extensive environmental damage, safety hazards, and unrealistic training habitats. The objectives of this project are to develop and evaluate revegetation procedures for establishing adequate vegetative cover to control erosion at minimal costs and disruption to training activities. This project involved the development and installation of 12 revegetation procedures that combined four seedbed preparation methods and seeding options with three site-closure periods. In March 1987, the four seedbed preparation/seeding options and closure periods were selected, a study site design and location chosen, and specifications for the revegetation procedures developed. A German rehabilitation contractor attempted the specified seedbed preparation and seeding on the 13.5-ha site in June, but abnormally high rainfall, usually wet site conditions, and lack of adequate equipment prevented the contractor from completing six of the 12 planned procedures. Planning and execution of the project has nonetheless provided valuable information on the importance and use of soil analytical results, seed availability and cost data, contractor equipment requirements, and time required for planning future revegetation efforts. Continued …
Date: March 1, 1989
Creator: Zellmer, S.D.; Hinchman, R.R.; Severinghaus, W.D.; Johnson, D.O. & Brent, J.J.
System: The UNT Digital Library
Calculation of integrated luminosity for beams stored in the Tevatron collider (open access)

Calculation of integrated luminosity for beams stored in the Tevatron collider

A model for calculating the integrated luminosity of beams stored in the Tevatron collider will be presented. The model determines the instantaneous luminosity by calculating the overlap integral of bunched beams passing through the interaction region. The calculation accounts for the variation in beam size due to the beta functions and also for effects due to finite longitudinal emittance and non-zero dispersion in the interaction region. The integrated luminosity is calculated for the beams as they evolve due to processes including collisions and intrabeam scattering. The model has been applied to both the extant and upgraded Tevatron collider, but is not limited to them. The original motivation for developing the computer model was to determine the reduction in luminosity due to beams with non-zero longitudinal emittances. There are two effects: the transverse beam size is increased where the dispersion is non-zero; the finite length of the beam bunch combined with an increasing /beta/ function results in an increased transverse beam size at the ends of the bunch. The derivation of a sufficiently useful analytic expression for the luminosity proved to be intractable. Instead, a numerical integration computer program was developed to calculate the luminosity in the presence of a finite …
Date: March 20, 1989
Creator: Finley, D.A.
System: The UNT Digital Library
Mass transport in salt repositories: Steady-state transport through interbeds (open access)

Mass transport in salt repositories: Steady-state transport through interbeds

Salt has long been a candidate for geologic disposal of nuclear waste. Because salt is extremely soluble in water, the existence of rock salt in the ground atest to the long-term stability of the salt. Both bedded salt and salt domes have been considered for nuclear waste disposal in the United States and Europe. While the salt is known to be quite pure in salt domes, bedded salt is interlaced with beds of sediments. Traditionally rock salt has not been considered water-conducting, but sediments layers would be classical porous media, capable of conducting water. Therefore there is interest in determining whether interbeds in bedded salt constitute pathway for radionuclide migration. In this report we consider steady-state migration of radionuclides from a single waste cylinder into a single interbed. Two approaches are used. In 1982 Neretnieks proposed an approach for calculating the steady-state transport of oxidants to a copper container. We have adapted that approach for calculating steady-state radionuclide migration away from the waste package, as a first approximation. We have also analyzed the problem of time-dependent radionuclide diffusion from a container through a backfill layer into a fracture, and we used the steady-state solution from that problem for comparison. Section …
Date: March 1, 1989
Creator: Hwang, Y.; Lee, W. W. L.; Chambre, P. L. & Pigford, T. H. (California Univ., Berkeley, CA (USA). Dept. of Nuclear Engineering)
System: The UNT Digital Library
Tritium production potential of beam research and magnetic fusion program technologies (open access)

Tritium production potential of beam research and magnetic fusion program technologies

Regular replenishment of tritium in the nuclear weapons stockpile is essential to maintain our nuclear deterrent. Nuclear reactor facilities presently used for the production of tritium are aging, and their operation is being curtailed awaiting the repairs and upgrades needed to meet modern standards of safety and environment. To provide improved capability in the future, DOE plans to construct a new production reactor. Alternatives to nuclear reactor methods for the production of tritium, mainly electrically-driven accelerator or fusion systems, have been proposed many times in the past. Given the critical national security implications of maintaining adequate tritium production facilities, it is clearly worthwhile for political decision-makers to have a clear and accurate picture of the technical options that could be made available at various points in the future. The goal of this white paper is to summarize available technical information on a set of non-nuclear-reactor options for tritium production with a minimum of advocacy for any one system of implicit assumptions about politically desirable attributes. Indeed, these various options differ considerably in aspects such as the maturity of the technology, the development cost and timescales required, and the capital and operating costs of a typical ''optimized'' facility.
Date: March 1, 1989
Creator: Lee, J.D. (comp.)
System: The UNT Digital Library
The neutronic and fuel cycle performance of interchangeable 3500 MWth metal and oxide fueled LMRs (open access)

The neutronic and fuel cycle performance of interchangeable 3500 MWth metal and oxide fueled LMRs

This study summarizes the neutronic and fuel cycle analysis performed at Argonne National Laboratory for an oxide and a metal fueled 3500 MWth LMR. The oxide and metal core designs were developed to meet reactor performance specifications that are constrained by requirements for core loading interchangeability and for small burnup reactivity swing. Differences in the computed performance parameters of the oxide and metal cores, arising from basic differences in their neutronic characteristics, were identified and discussed. It is shown that metal and oxide cores designed to the same ground rules exhibit many similar performance characteristics; however, they differ substantially in reactivity coefficients, control strategies, and fuel cycle options. 12 refs., 25 figs.
Date: March 1, 1989
Creator: Fujita, E. K. & Wade, D. C.
System: The UNT Digital Library
Coal liquefaction: A research and development needs assessment: Final report, Volume 2 (open access)

Coal liquefaction: A research and development needs assessment: Final report, Volume 2

Volume II of this report on an assessment of research needs for coal liquefaction contains reviews of the five liquefaction technologies---direct, indirect, pyrolysis, coprocessing, and bioconversion. These reviews are not meant to be encyclopedic; several outstanding reviews of liquefaction have appeared in recent years and the reader is referred to these whenever applicable. Instead, these chapters contain reviews of selected topics that serve to support the panel's recommendations or to illustrate recent accomplishments, work in progress, or areas of major research interest. At the beginning of each of these chapters is a brief introduction and a summary of the most important research recommendations brought out during the panel discussions and supported by the material presented in the review. A review of liquefaction developments outside the US is included. 594 refs., 100 figs., 60 tabs.
Date: March 1, 1989
Creator: Schindler, H. D.; Burke, F. P.; Chao, K. C.; Davis, B. H.; Gorbaty, M. L.; Klier, K. et al.
System: The UNT Digital Library
Wire grid beam-splitter for microwave diagnostics on MTX (Microwave Tokamak Experiment) (open access)

Wire grid beam-splitter for microwave diagnostics on MTX (Microwave Tokamak Experiment)

A wire grid beam splitter for use in high-power microwave diagnostics is discussed. The principle application considered here is the Microwave Tokamak Experiment (140 GHz ECH using 35 ns FEL pulses of about 3 GW peak power, single pulse, with future upgrade to 250 GHz, 8 GW, 50 ns, and 5 kHz repetition rate). The theory of wire grids of infinite extent and excited by a uniform plane wave is extended to consider grids of finite extent and excited by field having a Gaussian distribution. Design criteria based on the numerical simulations for the grid to be used in MTX are included along with other appropriate engineering recommendations. 8 refs., 27 figs., 2 tabs.
Date: March 8, 1989
Creator: Lorbeck, J.A.
System: The UNT Digital Library
Understanding and improving the Fermilab booster high field orbit (open access)

Understanding and improving the Fermilab booster high field orbit

This note is an account of the authors' effort in both understanding the Booster high field orbit and controlling it through displacements of the main combined function magnets. We were able to achieve the second goal with considerable accuracy while having limited success with the first, due to insufficient knowledge of the Booster dynamics. This work was initiated in Spring 1987 with the orbit control via magnet moves the chief purpose. A series of magnet moves in 1987 and 1988 resulting from this study testified to its reliability. The understanding of the Booster orbit in general remains an ongoing process in which we keep modifying our model with the hope of eventually having a quantitative grasp of the closed orbit and being able to manipulate it with more flexibility and accuracy. In this paper we give a brief description of the Booster environment in which the magnet moves are carried out, together with background information concerning the magnet moves. The method we use is discussed. The result of the moves is documented, and our effort to understand the Booster high field orbit is given a detailed account. 12 figs., 5 tabs.
Date: March 1, 1989
Creator: Chao, Y.; Ketcham, L. & Moore, C.D.
System: The UNT Digital Library
Hanford and the tri-cities economy: Review and outlook, March 1989 (open access)

Hanford and the tri-cities economy: Review and outlook, March 1989

The economy of the Tri-Cities, Washington area (primarily, Benton and Franklin Counties) is in transition due to major changes in two Department of Energy programs at Hanford---the abrupt ending of the Basalt Waste Isolation Project (BWIP) in December 1987 and the placing of the N Reactor in ''cold standby'' status in February 1988. This report reviews the economic situation in the Tri-Cities during 1988 and presents forecasts for key economic indicators for 1989. This report will be updated about every six months to review the changes in the area economy and forecast the near-term outlook. 6 figs., 33 tabs.
Date: March 1, 1989
Creator: Scott, M. J.; Belzer, D. B.; March, S. J.; Beck, D. M.; Schultz, R. W. & Harkreader, S. A.
System: The UNT Digital Library
40 CFR 265 interim-status ground-water monitoring plan for the 2101-M pond (open access)

40 CFR 265 interim-status ground-water monitoring plan for the 2101-M pond

This report outlines a ground-water monitoring plan for the 2101-M pond, located in the southwestern part of the 200-East Area on the Hanford Site in south-central Washington State. It has been determined that hazardous materials may have been discharged to the pond. Installation of an interim-status ground-water monitoring system is required under the Resource Conservation and Recovery Act to determine if hazardous chemicals are moving out of the pond. This plan describes the location of new wells for the monitoring system, how the wells are to be completed, the data to be collected, and how those data can be used to determine the source and extent of any ground-water contamination from the 2101-M pond. Four new wells are planned, one upgradient and three downgradient. 35 refs., 12 figs., 9 tabs.
Date: March 1, 1989
Creator: Chamness, M.A.; Luttrell, S.P. & Dudziak, S.
System: The UNT Digital Library
Geothermal Resource Assessment in the Aleutian Islands and Alaska Peninsula: Quarterly Progress Report, January 1--March 30, 1989 (open access)

Geothermal Resource Assessment in the Aleutian Islands and Alaska Peninsula: Quarterly Progress Report, January 1--March 30, 1989

In this report the authors have now completed dating work on 20 rock samples. Analytical results for the dated samples are given in the enclosed table. The results are generally in good agreement with observed stratigraphic relationships and provide a well-constrained time framework for the eruptive history of this volcanic area. The argon extraction and potassium analyses are completed and the argon sample is awaiting mass spectrometry. In addition to documenting the eruptive history of Umnak volcanoes, the K-Ar ages will provide a time framework for the chemical evolution of the magmatic system, when combined with the rock chemistry analyses presently in progress at U.C., Santa Cruz. 1 tab.
Date: March 30, 1989
Creator: Turner, D. L. & Nye, C. J.
System: The UNT Digital Library