Resource Type

7 Matching Results

Results open in a new window/tab.

Hanford Site radionuclide national emission standards for hazardous air pollutants unregistered stack (power exhaust) source assessment (open access)

Hanford Site radionuclide national emission standards for hazardous air pollutants unregistered stack (power exhaust) source assessment

On February 3, 1993, the US Department of Energy, Richland Operations Office received a Compliance Order and Information Request from the Director of the Air and Toxics Division of the US Environmental Protection Agency, Region 10. The Compliance Order requires the Richland Operations Office to evaluate all radionuclide emission points at the Hanford Site to determine which are subject to continuous emission measurement requirements in 40 Code of Federal Regulations (CFR) 61, Subpart H, and to continuously measure radionuclide emissions in accordance with 40 CFR 61.93. This evaluation provides an assessment of the 39 unregistered stacks, under Westinghouse Hanford Company`s management, and their potential radionuclide emissions, i.e., emissions with no control devices in place. The evaluation also determined if the effective dose equivalent from any of these stack emissions exceeded 0.1 mrem/yr, which will require the stack to have continuous monitoring. The result of this assessment identified three stacks, 107-N, 296-P-26 and 296-P-28, as having potential emissions that would cause an effective dose equivalent greater than 0.1 mrem/yr. These stacks, as noted by 40 CFR 61.93, would require continuous monitoring.
Date: August 4, 1994
Creator: Davis, W. E.
System: The UNT Digital Library
The effect of azimuthal inert material on the CMS hadron calorimeter (open access)

The effect of azimuthal inert material on the CMS hadron calorimeter

The baseline design for the CMS hadronic calorimeter (HCAL) calls for barrel wedges subtending an azimuthal range of 1/18 of 2 {pi}. These wedges will each have about 1 cm of inert material which is required to make a self supporting structure. Therefore, it is expected that there will be about 2 cm of inert material between active elements in the CMS calorimeter. Since the inner radius of the HCAL modules is at 1.95 m, there is about 3% of the azimuth which is inert and possibly projective. Previous studies for the SDC endcap have indicated that such a level of inert material is largely benign. However, it is necessary to examine the specific case of CMS, both in the barrel and in the endcap.
Date: August 4, 1994
Creator: Green, D.
System: The UNT Digital Library
RHIC Timeline System (open access)

RHIC Timeline System

None
Date: August 4, 1994
Creator: R., Conkling C. & Oerter, B. R.
System: The UNT Digital Library
Improved radioimmunotherapy of hematologic malignancies. Progress report, November 1, 1993--October 31, 1994 (open access)

Improved radioimmunotherapy of hematologic malignancies. Progress report, November 1, 1993--October 31, 1994

This report summaries progress made during the time interval between November 1, 1993 and October 31, 1994 and briefly describes studies on the metabolism of antibodies targeting B cell antigens, retention of labeled antibodies by human B cell lymphocytes, and tissue distribution of Chloramine T and tyramine cellobiose labeled antibodies in mice harboring a human erythroleukemia tumor transplant.
Date: August 4, 1994
Creator: Press, O. W.
System: The UNT Digital Library
Integrated test plan for a shallow high resolution compressional seismic reflection demonstration (open access)

Integrated test plan for a shallow high resolution compressional seismic reflection demonstration

This integrated test plan describes the demonstration of a surface high resolution seismic reflection acquisition system using swept source technology. Compressional wave data will be collected along a previously occupied seismic line associated with a recent seismic survey north of the 300 Area. The swept source system will be employed testing two very different high resolution vibrator sources, one with a frequency range from 10 to 500 Hz and a smaller unit with a range from 20 to 1,500 Hz. This will enable a precursory comparison of two vibrator data sets with standard impulse data. The data will be evaluated for the presence of reflected energy, signal strength, frequency content and signal-to-noise ratio. If the water table can be distinguished from the Hanford/Ringold formation contact, then the high permeability Hanford-filled channels can be mapped. Next, if details on the configuration of the Ringold middle mud can be discerned, this will allow detecting fluid pathway through the mud and confirm the depositional nature of this unit. Finally, by mapping the extent of the lower confining mud unit, areas where the polluted unconfined and lower confined aquifers communicate might be located. Another source and acquisition method will also be tested by gathering …
Date: August 4, 1994
Creator: Narbutovskih, S. M.
System: The UNT Digital Library
Interphase transport and multistage separations. Final report, September 1, 1984--August 31, 1994 (open access)

Interphase transport and multistage separations. Final report, September 1, 1984--August 31, 1994

This report gives a summary of the research accomplished under this project which included: Collocation analysis of multistage separation systems; Heat and mass transport fundamentals; Fractionation tray modeling; and Computational and statistical methods. The large equation sets encountered in tray-by-tray modeling of distillation systems are a major obstacle in computer-aided process engineering. The authors addressed this difficulty by approximating the multistage equations with much smaller sets, obtained by orthogonal polynomial interpolation over the stages. A new approach to column design was initiated when they discovered how to extend their collocation formulas to modules containing non-integer numbers of stages. This extension proved equally useful for column simulations in the presence of more than one liquid phase. They also investigated strategies to handle locally steep concentration profiles and high-purity separations. As a basis for realistic modeling of fractionating trays, a comprehensive comparison of various computation methods for multicomponent mass transfer was undertaken. A theoretical study was carried out for asymptotic forms for heat and mass transfer rates in boundary layers. Newton`s method was used in several of the computational algorithms for equation solving, parametric sensitivity analysis and nonlinear parameter estimation. The authors investigated modifications of the Newton method designed to achieve convergence …
Date: August 4, 1994
Creator: Stewart, W. E.
System: The UNT Digital Library
Mathematical modeling of liquid/liquid hollow fiber membrane contactor accounting for interfacial transport phenomena: Extraction of lanthanides as a surrogate for actinides (open access)

Mathematical modeling of liquid/liquid hollow fiber membrane contactor accounting for interfacial transport phenomena: Extraction of lanthanides as a surrogate for actinides

This report is divided into two parts. The second part is divided into the following sections: experimental protocol; modeling the hollow fiber extractor using film theory; Graetz model of the hollow fiber membrane process; fundamental diffusive-kinetic model; and diffusive liquid membrane device-a rigorous model. The first part is divided into: membrane and membrane process-a concept; metal extraction; kinetics of metal extraction; modeling the membrane contactor; and interfacial phenomenon-boundary conditions-applied to membrane transport.
Date: August 4, 1994
Creator: Rogers, J. D.
System: The UNT Digital Library