Oxygen self-diffusion in PuO/sub 1.995/ was calculated from rate constants obtained for the parabolic oxidation of the Pu-1 wt % Ga alloy in 500-torr dry air between 250 and 480/degree/C. The activation energy for oxygen vacancy diffusion in the n-type PuO/sub 2-x/ is 22.6 kcal/mole. Results from this investigation are compared with other reported results, and possible explanation for the difference in results is discussed. 21 refs., 5 figs., 1 tab.

A screening study was performed on a laboratory scale downfired combustor to determine the effect of various variables on the effectiveness of the reburning process as a technique for NO{sub x} abatement. The objective was to define optimum conditions under which reburning can be used and to be able to compare the reburning performance of our combustor to those reported by others. For this purpose, a statistically designed parametric investigation was conducted to determine how a set of controlled variables (primary and secondary stoichiometric ratios, location of the reburn zone and primary fuel load) would affect the reduction in NO emissions in a classical reburning configuration. Also, the effects of other variables (NO in the primary zone, temperatures in the primary, reburn and burnout zones and the residence time in the reburn zone) were also investigated. Empirical correlations relating reburning effectiveness to various parameters were derived. There correlations were used to investigate the effect of each individual parameter on reburning effectiveness. An optimum reburn zone stoichiometric ratio was identified at 0.8. At this stoichiometry, a high level of NO reduction (up to 80%) can be achieved beyond which little or no improvement is easily achieved.

This research is directed towards the development of engineering guidelines that define the application of distributed fuel addition as a technique for NO{sub x} abatement. It is expected that multiple fuel and air addition in the post-flame of a combustion process will increase free radical concentrations which destroy nitrogenous species and thus help them decay toward their equilibrium concentrations, which can be very low in that region of the combustor. Screening experiments were conducted on a laboratory scale downfired combustor. The objective was to compare NO{sub x} emissions arising from various combustion configurations, including fuel and/or air staging. Although the primary focus of this research is on NO control, a secondary effort was directed towards the measurement of N{sub 2}O emissions from various coal combustion processes. N{sub 2}O has been identified as a trace gas responsible for stratospheric ozone depletion, and has been hypothesized to arise from combustion processes, in amounts roughly proportional to NO emissions. Results presented in this report showed that the ratio N{sub 2}O/NO was far from constant. The introduction of secondary air into a combustion process was accompanied an increase in N{sub 2}O emissions. The measured N{sub 2}O was always less than 10 ppm even under …

Weekly report of the Texas Agricultural Statistics Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending December 19 to the week ending January 23, during 1986, 1987, and 1988 for broiler eggs set, chicks hatched, and chicks placed.

Because the SLC final IP spot is produced by an aberration-dominated optical system, all components and couplings between dimensions of transverse phase-space must be controlled in the experimental tuning algorithm. For equal emittances epsilon/sub x/ = epsilon/sub y/, this amounts to ten linear optics adjustments. These adjustments are coupled and depend non-linearly on phase-space parameters. A ten-dimensional non-linear fitting program is therefore used to match the lattice in the Final Focus to the input beam. Local orthogonal ''knobs'' are also defined for fine-tweaking around the initial solution, although this is not always practical because of steering from the lenses. The three final waist corrections are however fully orthogonal to the other seven optical adjustments. This means that they do not cause any of the other seven optical distortions. We refer to this as external orthogonality. They can also be made internally orthogonal. This means that each one of the three orthogonalized controls can be applied independently of the two others. It also allows one to simultaneously correct and determine the phase-space at the IP.

Previous USDOE-funded geothermal studies have produced an extensive temperature gradient and heat flow data base for the State of Oregon. One of the important features identified as a result of these studies is a rapid transition from heat flow values on the order of 40 mW/m/sup 2/ in the Willamette Valley and Western Cascades to values of greater than or equal to100 mW/m/sup 2/ in the High Cascades and the eastern portion of the Western Cascades. These data indicate that the Cascade Range in Oregon has potential as a major geothermal province and stimulated much of the later work completed by government agencies and private industry. Additional data generated as a result of this grant and published in DOGAMI Open-File Report 0-86-2 further define the location and magnitude of this transition zone. In addition, abundant data collected from the vicinity of Breitenbush and Austin Hot Springs have permitted the formulation of relatively detailed models of these hydrothermal systems. These models are published in DOGAMI Open-File Report 0-88-5. Task 1.2 of the Deliverables section of Amendment M001 is fulfilled by DOGAMI publication GMS-48, Geologic map of the McKenzie Bridge quadrangle, Lane County, Oregon. This map was printed in October, 1988, and …

This research is directed towards the development of engineering guidelines that define the application of distributed fuel addition as a technique for NOx abatement. It is expected that multiple fuel and air addition in the post-flame of a combustion process will increase free radical concentrations which destroy nitrogenous species and thus help them decay toward their equilibrium concentrations, which can be very low in that region of the combustor. Screening experiments were conducted on a laboratory scale downfired combustor. The objective was to compare NOx emissions arising from various combustion configurations, including fuel and/or air staging. Although the primary focus of this research is on NO control, a secondary effort was directed towards the measurement of N2O emissions from various coal combustion processes. N2O has been identified as a trace gas responsible for stratospheric ozone depletion, and has been hypothesized to arise from combustion processes, in amounts roughly proportional to NO emissions. Results presented in this report showed that the ratio N2O/NO was far from constant. The introduction of secondary air into a combustion process was accompanied an increase in N2O emissions. The measured N2O was always less than 10 ppm even under the most favorable combustion conditions. Reburning with …

A screening study was performed on a laboratory scale downfired combustor to determine the effect of various variables on the effectiveness of the reburning process as a technique for NO{sub x} abatement. The objective was to define optimum conditions under which reburning can be used and to be able to compare the reburning performance of our combustor to those reported by others. For this purpose, a statistically designed parametric investigation was conducted to determine how a set of controlled variables (primary and secondary stoichiometric ratios, location of the reburn zone and primary fuel load) would affect the reduction in NO emissions in a classical reburning configuration. Also, the effects of other variables (NO in the primary zone, temperatures in the primary, reburn and burnout zones and the residence time in the reburn zone) were also investigated. Empirical correlations relating reburning effectiveness to various parameters were derived. There correlations were used to investigate the effect of each individual parameter on reburning effectiveness. An optimum reburn zone stoichiometric ratio was identified at 0.8. At this stoichiometry, a high level of NO reduction (up to 80%) can be achieved beyond which little or no improvement is easily achieved.

Mass volume limits are frequently used in the Separations Areas recovery operations where precise modelling may not be feasible or justified. Mass volume limits also provide a quick, ready and conservative reference to Nuclear Safety personnel when called upon for guidance. Specifically, New Special Recovery Personnel requested mass volume limits directly applicable to the Sample Handling operations. Earlier Nuclear Safety Analysis by J.L. Forstner provided limits at 0%, 2% and 4% {sup 240}Pu that could be applied but were in graphical form and the actual data for the 2% {sup 240}Pu log-log curve could not be found. Further, recently concerns were expressed as to operations personnel reading log-log plots, extracting meaningful information and directly applying as nuclear safety limits. Data included in the attached charts and tables is the author`s attempt to remedy this condition. Table 2 provides mass volume limits that can be extracted in part or completely and directly applied to the Nuclear Criticality Safety Supplements and operating procedures. Figures 1 through 7 are for the purists who prefer graphical representations.

This report discusses how broad should the coverage of Federal civil rights laws be? This was the central issue in the debate over legislation introduced in response to the February 1984 U.S. Supreme Court decision in Grove City College v. Bell.