105-KE Basin isolation barrier leak rate test analytical development. Revision 1 (open access)

105-KE Basin isolation barrier leak rate test analytical development. Revision 1

This document provides an analytical development in support of the proposed leak rate test of the 105-KE Basin. The analytical basis upon which the K-basin leak test results will be used to determine the basin leakage rates is developed in this report. The leakage of the K-Basin isolation barriers under postulated accident conditions will be determined from the test results. There are two fundamental flow regimes that may exist in the postulated K-Basin leakage: viscous laminar and turbulent flow. An analytical development is presented for each flow regime. The basic geometry and nomenclature of the postulated leak paths are denoted.
Date: May 9, 1995
Creator: Irwin, J. J.
Object Type: Report
System: The UNT Digital Library
200 Area Treated Effluent Disposal Facility operational test specification. Revision 2 (open access)

200 Area Treated Effluent Disposal Facility operational test specification. Revision 2

This document identifies the test specification and test requirements for the 200 Area Treated Effluent Disposal Facility (200 Area TEDF) operational testing activities. These operational testing activities, when completed, demonstrate the functional, operational and design requirements of the 200 Area TEDF have been met. The technical requirements for operational testing of the 200 Area TEDF are defined by the test requirements presented in Appendix A. These test requirements demonstrate the following: pump station No.1 and associated support equipment operate both automatically and manually; pump station No. 2 and associated support equipment operate both automatically and manually; water is transported through the collection and transfer lines to the disposal ponds with no detectable leakage; the disposal ponds accept flow from the transfer lines with all support equipment operating as designed; and the control systems operate and status the 200 Area TEDF including monitoring of appropriate generator discharge parameters.
Date: February 9, 1995
Creator: Crane, A.F.
Object Type: Report
System: The UNT Digital Library
Advanced radiation techniques for inspection of diesel engine combustion chamber materials components. Final report (open access)

Advanced radiation techniques for inspection of diesel engine combustion chamber materials components. Final report

Heavy duty truck engines must meet stringent life cycle cost and regulatory requirements. Meeting these requirements has resulted in convergence on 4-stroke 6-in-line, turbocharged, and after-cooled engines with direct-injection combustion systems. These engines provide much higher efficiencies (42%, fuel consumption 200 g/kW-hr) than automotive engines (31%, fuel consumption 270 g/kW-hr), but at higher initial cost. Significant near-term diesel engine improvements are necessary and are spurred by continuing competitive, Middle - East oil problems and Congressional legislation. As a result of these trends and pressures, Caterpillar has been actively pursuing a low-fuel consumption engine research program with emphasis on product quality through process control and product inspection. The goal of this project is to combine the nondestructive evaluation and computational resources and expertise available at LLNL with the diesel engine and manufacturing expertise of the Caterpillar Corporation to develop in-process monitoring and inspection techniques for diesel engine combustion chamber components and materials. Early development of these techniques will assure the optimization of the manufacturing process by design/inspection interface. The transition from the development stage to the manufacturing stage requires a both a thorough understanding of the processes and a way of verifying conformance to process standards. NDE is one of the …
Date: October 9, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The advantages of including professionals from different fields of study in the solution of today`s water-related problems (open access)

The advantages of including professionals from different fields of study in the solution of today`s water-related problems

This report presents the details of a meeting of the American Society of Civil Engineers pertaining to water resources and quality. This report suggests an interdisciplinary approach to solving today`s problems dealing with water resources.
Date: May 9, 1995
Creator: Renshaw, A.
Object Type: Article
System: The UNT Digital Library
Analysis of distributed cooled high power millimeter wave windows (open access)

Analysis of distributed cooled high power millimeter wave windows

The sectional high-frequency (100--170 GHz) distributed cooled window has been investigated both electromagnetically and thermally previously using computational electromagnetics (EM) and thermal codes. Recent data describes the relationship to some experimental data for the window. Results are presented for time domain CW EM analyses and CW thermal and stress calculations.
Date: September 9, 1995
Creator: Nelson, S. D.; Caplan, M. & Reitter, T. A.
Object Type: Article
System: The UNT Digital Library
BCP selector valves and limit switches (open access)

BCP selector valves and limit switches

This Acceptance Test Procedure (ATP) has been prepared to demonstrate that the Electrical/Instrumentation systems for the BCP stream function as required by project criteria. Specifically, the test will verify the operation of the solenoid valves and associated limit switches installed for the BCP portion of W-OO7H. This equipment is part of the B-Plant Process Condensate Treatment Facility.
Date: January 9, 1995
Creator: Rippy, G. L.
Object Type: Report
System: The UNT Digital Library
Bench- and pilot-scale thermal desorption treatability studies on pesticide-contaminated soils from Rocky Mountain Arsenal (open access)

Bench- and pilot-scale thermal desorption treatability studies on pesticide-contaminated soils from Rocky Mountain Arsenal

Thermal desorption is being considered as a potential remediation technology for pesticide-contaminated soils at the Rocky Mountain Arsenal (RMA) in Denver, Colorado. From 1988 through 1992, numerous laboratory- and bench-scale indirect-heated thermal desorption (IHTD) treatability studies have been performed on various soil medium groups from the arsenal. RMA has contracted Argonne National Laboratory to conduct a pilot-scale direct-fired thermal desorption (DFTD) treatability study on pesticide-contaminated RMA soil. The purpose of this treatability study is to evaluate the overall effectiveness of the DFTD technology on contaminated RMA soils and to provide data upon which future conceptual design assumptions and cost estimates for a full-scale system can be made. The equipment used in the DFTD treatability study is of large enough scale to provide good full-scale design parameters and operating conditions. The study will also provide valuable-emissions and materials-handling data. Specifically this program will determine if DFTD can achieve reductions in soil contamination below the RMA preliminary remediation goals (PRGs), define system operating conditions for achieving the PRGs, and determine the fate of arsenic and other hazardous metals at these operating conditions. This paper intends to compare existing data from a bench-scale IHTD treatability study using equipment operated in the batch mode …
Date: March 9, 1995
Creator: Swanstrom, C.P. & Besmer, M.
Object Type: Article
System: The UNT Digital Library
Capacitive deionization of water: An innovative new process (open access)

Capacitive deionization of water: An innovative new process

The capacitive deionization of water with a stack of carbon aerogel electrodes has been successfully demonstrated for the first time. Unlike ion exchange, one of the more conventional deionization processes, no chemicals were required for regeneration of the system. Electricity was used instead. Water with various anions and cations was pumped through the electrochemical cell. After polarization, ions were electrostatically removed from the water and held in the electric double layers formed at electrode surfaces. The water leaving the cell was purified, as desired.
Date: January 9, 1995
Creator: Farmer, J.; Fix, D. & Mack, G.
Object Type: Article
System: The UNT Digital Library
Continuous contour phase plates for tailoring the focal plane irradiance profile (open access)

Continuous contour phase plates for tailoring the focal plane irradiance profile

We present fully continuous phase screens for producing super-Gaussian focal-plane irradiance profiles. Such phase screens are constructed with the assumption of either circular symmetric near-field and far-field profiles or a separable phase screen in Cartesian co-ordinates. In each case, the phase screen is only a few waves deep. Under illumination by coherent light, such phase screens produce high order super-Gaussian profiles in the focal plane with high energy content effects of beam aberrations on the focal profiles and their energy content are also discussed.
Date: August 9, 1995
Creator: Dixit, S. N.; Rushford, M. C.; Thomas, I. M. & Perry, M. D.
Object Type: Article
System: The UNT Digital Library
Design of a mid-IR immersion echelle grating spectrograph for remote sensing (open access)

Design of a mid-IR immersion echelle grating spectrograph for remote sensing

We describe the design of a silicon immersion grating spectrograph for the remote detection of chemicals in the atmosphere. The instrument is designed to operate in the two atmospheric windows from 2.3 to 2.5 and 2.8 and 4.2 microns at a resolution of 0.1 cm{sup {minus}1}. This is achieved by cross dispersing a high order silicon immersion echelle (13.5 grooves/mm) and a first order concave grating operating in a reflective configuration to generate a two-dimensional spectrum in the image plane with diffraction limited performance.
Date: May 9, 1995
Creator: Thomas, N.L.; Lewis, I.T. & Stevens, C.G.
Object Type: Article
System: The UNT Digital Library
Direct aromatization of methane. Quarterly technical progress report No. 12, July 1, 1995--September 30, 1995 (open access)

Direct aromatization of methane. Quarterly technical progress report No. 12, July 1, 1995--September 30, 1995

Further investigations of the initiation of pyrolysis by a solid surface using a variety of catalysts with different surface areas and compositions were carried out during this reporting period. The effects of catalyst surface area, reaction temperature, and presence of ethane have been addressed. In general, catalysts such as {alpha}-A1{sub 2}O{sub 3},SiC, or hexaaluminates were found able to lower the reaction temperature but led to increased {open_quotes}tar{close_quotes} formation. The addition of ethane increased further the conversion at the higher temperatures and lowered the amount of {open_quotes}tar{close_quotes}. There appears to be no correlation between catalytic surface area and activity/selectivity for methane conversion.
Date: November 9, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Discrete-fracture modeling of thermal-hydrological processes at Yucca Mountain and the LLNL G-Tunnel heater test (open access)

Discrete-fracture modeling of thermal-hydrological processes at Yucca Mountain and the LLNL G-Tunnel heater test

An in situ heater test was performed at G-Tunnel, Nevada Nuclear Test Site, to investigate the thermal-hydrological response of unsaturated, fractured volcanic tuff under conditions similar to those at Yucca Mountain. The NUFT flow and transport code was used to model the test using discrete-fracture and equivalent-continuum approaches. Nonequilibrium fracture flow and thermal buoyant gas-phase convection were found to be the likely causes for observed lack of condensate imbibition into the matrix. The potential repository at Yucca Mountain was also modeled. Disequilibrium fracture flow is predicted to occur for less than a hundred years after emplacement followed by a period of fracture-matrix equilibrium, during which the equivalent-continuum and discrete-fracture models give almost identical results.
Date: November 9, 1995
Creator: Nitao, J. J. & Buscheck, T. A.
Object Type: Article
System: The UNT Digital Library
Dose rate estimates in the first optical enclosure due to particle beam loss in the insertion device transition region during injection (open access)

Dose rate estimates in the first optical enclosure due to particle beam loss in the insertion device transition region during injection

The particle beam, during injection into the storage ring, can be partly lost in one of the transition regions between the storage-ring vacuum chamber and the insertion-device (ID) straight section. The transition region is a copper interface between a standard aluminum vacuum chamber and an insertion-device vacuum chamber. This can be a problem, at least in the first few insertion devices where the injected beam is still unstable. It may create higher photon and neutron dose rates in the first optical enclosures of the upstream ID beamlines adjacent to this region. This report presents the results of the dose rate estimates for such an event and some recommendations for mitigation.
Date: May 9, 1995
Creator: Job, P. K. & Moe, H. J.
Object Type: Report
System: The UNT Digital Library
Effect of a fluorinated nickel surface on the decomposition of perfluorodiethoxymethane (open access)

Effect of a fluorinated nickel surface on the decomposition of perfluorodiethoxymethane

Perfluoropolyethers (PFPEs) are a commercial class of lubricants widely used in computer and aerospace industries. This is a study of the degradation of a perfluorinated ether in the presence of a metal fluoride. Perfluorodiethoxymethane (PFDEM) is a PFPE analog. Temperature programmed desorption shows no contribution of PFDEM toward nickel fluoride on an NiF{sub 2} surface obtained by CF{sub 3}I adsorption. Higher coverages of nickel fluoride do not show any evidence of NiF{sub 2} contribution from PFDEM. The results do not agree with the idea that a fluorinated surface might induce decomposition of PFPEs, leading to addition fluoride formation on the surface. The metal fluoride bond strength is not a legitimate concern for decomposition of PFE lubricants. Impurity in PFPEs might be the cause of initial surface fluoridation leading to breakdown of PFPEs which could cause additional metal fluoride formation. It is clear that the reaction of PFPEs with metals does not involve a direct formation of a simple M-F bond; results do not show any C-F bond cleavage of the fluorinated ether and do not support a proposed autocatalytic mechanism.
Date: November 9, 1995
Creator: Sreevidya, S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effect of ELMs on the SOL plasma in DIII-D (open access)

Effect of ELMs on the SOL plasma in DIII-D

We have studied the evolution of the edge plasma in VH-mode discharges in DIII-D as the discharge evolves from the ELM-free H-mode phase through the VH-mode phase to the final ELMing H-mode phase, by following the changes in the radial profiles of the density and temperature, in the core plasma near the separatrix and in the scrape-off-layer (SOL) plasma outside the separatrix. The electron density and temperature profiles in the SOL do not show any significant difference between the ELM-free H-mode and VH-mode phases. In the ELMing phase, the, density profile broadens during an ELM, forming a high density (n{sub e} > 1 x 10{sup 19}/m{sup 3}) plateau that extends out into the SOL to the limit of the measurement. This density plateau persists between the ELMs, although the density in the SOL does relax somewhat between the ELMs, with a characteristic time that can be larger than ten milliseconds, much longer than the sonic particle flow time to the divertor plates. The time average density scale length measured at the separatrix increases by about a factor of two after the ELMs begin. This density scale length increases with the ELM background, as measured by the photo-diodes nearest to, but …
Date: May 9, 1995
Creator: Jong, R. A.; Porter, G. D. & Groebner, R. J.
Object Type: Article
System: The UNT Digital Library
Effects of ethanol on small engines and the environment (open access)

Effects of ethanol on small engines and the environment

With the support of the Missouri Corn Merchandising Council and the Department of Energy, Northwest Missouri State University conducted an applied research project to investigate the effects of the commercially available ethanol/gasoline fuel blend on small engines. The study attempted to identify any problems when using the 10% ethanol/gasoline blend in engines designed for gasoline and provide solutions to the problems identified. Fuel economy, maximum power, internal component wear, exhaust emissions and engine efficiency were studied.
Date: January 9, 1995
Creator: Bettis, M. D.
Object Type: Report
System: The UNT Digital Library
Electrically conductive adhesive Flip Chip Attach Project. Annual report, October 1, 1994--October 1, 1995 (open access)

Electrically conductive adhesive Flip Chip Attach Project. Annual report, October 1, 1994--October 1, 1995

This annual report details activities for TRP Flip Chip Attached Project. The IBM/Universal Instruments team has completed the first year effort on the Electrically Conductive Adhesive Flip Chip Attach project. IBM-Yorktown has worked closely with IBM Endicott to develop a Polymer Metal Solvent Paste (PMSP) that can be processed to form a cylindrically shaped deposit. IBM Endicott has done extensive work on bonding. This work has identified the key parameters to bond a Polymer Metal Composite (PMC) bumped die to a substrate.
Date: November 9, 1995
Creator: Woychik, C.G.
Object Type: Report
System: The UNT Digital Library
Engineering Task Plan for a vapor treatment system on Tank 241-C-103 (open access)

Engineering Task Plan for a vapor treatment system on Tank 241-C-103

This Engineering Task Plan describes tasks and responsibilities for the design, fabrication, test, and installation of a vapor treatment system (mixing system) on Tank 241-C-103. The mixing system is to be installed downstream of the breather filter and will use a mixing blower to reduce the chemical concentrations to below allowable levels.
Date: March 9, 1995
Creator: Conrad, R.B.
Object Type: Report
System: The UNT Digital Library
An Estimate on the Effects of Triplet Magnet Misalignments in RHIC (open access)

An Estimate on the Effects of Triplet Magnet Misalignments in RHIC

None
Date: October 9, 1995
Creator: J., Wei; Harrison, M.; Peggs, S.; Thompson, P.A. & Trbojevic, D.
Object Type: Report
System: The UNT Digital Library
Experimental characterization of high-brightness electron photoinjector (open access)

Experimental characterization of high-brightness electron photoinjector

Operational experience of the emittance compensated photoinjector at the Brookhaven Accelerator Test Facility (ATF) is presented in this paper. The photoinjector has demonstrated the stability and reliability required for UV and X-ray FEL applications. The RF gun has been routinely running at more than 100 MV/m peak acceleration field; the laser system of the photoinjector has achieved 2% peak to peak energy stability, 0.5% point stability and better than 2 ps timing jitter. The highest measured quantum efficiency of the Cu cathode is 0.05%. The electron beam bunch length was measured to be 10 ps using a linac RF phase scan. The normalized rms emittance for a 0.5 nC charge was measured, to be from 1 to 2 mm-mrad, which agrees with PARMELA simulations.
Date: October 9, 1995
Creator: Wang, X. J.; Babzien, M.; Batchelor, K.; Ben-Zvi, Ilan; Pogorelsky, R. M. I.; Qui, X. et al.
Object Type: Article
System: The UNT Digital Library
Feasibility of organo-beryllium target mandrels using organo-germanium PECVD as a surrogate (open access)

Feasibility of organo-beryllium target mandrels using organo-germanium PECVD as a surrogate

Inertial Confinement Fusion capsules incorporating beryllium are becoming attractive for use in implosion experiments designed for modest energy gain. This paper explores the feasibility of chemical vapor deposition of organo-beryllium precursors to form coating materials of interest as ablators and fuel containers. Experiments were performed in a surrogate chemical system utilizing tetramethylgermane as the organometallic precursor. Coatings with up to 60 mole percent germanium were obtained. These coatings compare favorably with those previously reported in the literature and provide increasing confidence that a similar deposition process with an organo-beryllium precursor would be successful.
Date: March 9, 1995
Creator: Brusasco, R.M.; Dittrich, T. & Cook, R.C.
Object Type: Article
System: The UNT Digital Library
Generation of Pseudotachylites in Shock Experiments: Implications for Impact Cratering Products and Processes (open access)

Generation of Pseudotachylites in Shock Experiments: Implications for Impact Cratering Products and Processes

Meteorite impacts produce enormous pressure and strain in rocks. While the role of pressure on the formation of shock metamorphic features has been well studied, the role of strain and strain rate has not been fully appreciated. We shock loaded single-crystal quartz in Al capsules up to 56 GPa using a novel capsule design that allows for significant strain of the sample but 100% recovery of material. We have made features analogous to type A pseudotachylites at pressures of 42--56 GPa. These pseudotachylites contain Al, Si and minor Al{sub 2}O{sub 3} in a matrix of SiO{sub 2} class and cut the sample along radial and concentric fractures. Our results suggest that strain heating is an important energy sink in the formation of large impact craters.
Date: August 9, 1995
Creator: Fiske, P. S.; Nellis, W. J.; Lorenzana, H.; Lipp, M.; Kikuchi, M. & Syono, Y.
Object Type: Article
System: The UNT Digital Library
Glow discharge optical emission of plutonium and plutonium waste (open access)

Glow discharge optical emission of plutonium and plutonium waste

The application of glow discharges to the analysis of nonconducting materials such as glasses and ceramics is of great interest due to the number of advantages afforded by their direct solids capabilities. These types of samples, by their chemical nature, pose difficulties in dissolution for their subsequent analysis by common spectroscopic instrumental methods such as inductively coupled plasma atomic emission (ICP-AES). The ability of the glow discharge to sputter-atomize and excite solid nonconducting materials greatly reduces sample preparation time, cost, and complexity of an analysis. In comparison with x-ray spectroscopies, GD also provides the advantage of a relatively uniform sample atomization rate, resulting in a lowering of matrix effects. In a traditional direct current glow discharge (dc-GD), the material to be analyzed must first be ground and thoroughly mixed with a conductive host matrix and pressed into a solid pellet. Additionally, atmospheric gases which are often trapped in the sample upon pressing can degrade the quality of the plasma and obscure analytical results by reducing sputtering rates and affecting excitation conditions. Internal standardization has been carried out in both atomic absorption and emission dc-GD analyses in order to improve precision and accuracy which are affected by these problems.
Date: November 9, 1995
Creator: Marcus, R. K. & Spencer, W. A.
Object Type: Report
System: The UNT Digital Library
Initial results from the Lick Observatory laser guide star adaptive optics system (open access)

Initial results from the Lick Observatory laser guide star adaptive optics system

We present initial results from the sodium-layer laser guide star adaptive optics system developed for the 3-m Shane telescope at Lick Observatory.
Date: June 9, 1995
Creator: Olivier, S. S.; An, Jong & Avicola, K.
Object Type: Article
System: The UNT Digital Library