Serial/Series Title
Chemical Processing Department Monthly Report
11
Federal Emergency Management Information System (FEMIS)
3
Hanford Works Monthly Report
3
Proceedings of the Workshop on Geothermal Reservoir Engineering
3
Fiscal Year 1997
2
Fiscal Year 2005
2
Fiscal Year 2006
2
Fiscal Year 2008
2
Irradiation Processing Department Monthly Record Report
2
Mound Laboratory Monthly Health Information Report
2
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Energy Saving Melting and Revert Reduction Technology (Energy-SMARRT): Surface/Near Surface Indication - Characterization of Surface Anomalies from Magnetic Particle and Liquid Penetrant Indications
The systematic study and characterization of surface indications has never been conducted. Producers and users of castings do not have any data on which they can reliably communicate the nature of these indications or their effect on the performance of parts. Clearly, the ultimate intent of any work in this area is to eliminate indications that do in fact degrade properties. However, it may be impractical physically and/or financially to eliminate all surface imperfections. This project focused on the ones that actually degrade properties. The initial work was to identify those that degrade properties. Accurate numerical simulations of casting service performance allow designers to use the geometric flexibility of castings and the superior properties of steel to produce lighter weight and more energy efficient components for transportation systems (cars and trucks), construction, and mining. Accurate simulations increase the net melting energy efficiency by improving casting yield and reducing rework and scrap. Conservatively assuming a 10% improvement in yield, approximately 1.33 x 1012 BTU/year can be saved with this technology. In addition, CO2 emissions will be reduced by approximately 117,050 tons per year.
Date:
February 20, 2014
Creator:
Griffin, John
Object Type:
Report
System:
The UNT Digital Library
241-AY-102 Leak Detection Pit Drain Line Inspection Report
This document provides a description of the design components, operational approach, and results from the Tank AY-102 leak detection pit drain piping visual inspection. To perform this inspection a custom robotic crawler with a deployment device was designed, built, and operated by IHI Southwest Technologies, Inc. for WRPS to inspect the 6-inch leak detection pit drain line.
Date:
January 20, 2014
Creator:
Boomer, Kayle D.; Engeman, Jason K.; Gunter, Jason R.; Joslyn, Cameron C.; Vazquez, Brandon J.; Venetz, Theodore J. et al.
Object Type:
Report
System:
The UNT Digital Library
Atomic-Scale Chemical, Physical and Electronic Properties of the Subsurface Hydride of Palladium
We employed low-temperature, extreme-high vacuum scanning tunneling microscopy (STM) to investigate the roles of subsurface hydride (H) and deuteride (D) in the surface reconstruction and surface reactivity of Pd{110}. Specifically, we gained the ability to tailor the surface structure of Pd{110} both by preparation method and by deposition of deuterium from the gas phase. We observed thiophene at low coverage on Pd{110} to determine its adsorption orientation and electronic structure through scanning tunneling spectroscopy (STS) – namely, conductance spectroscopy and differential conductance imaging. We developed the methods necessary to coadsorb D adatoms with thiophene molecules, and to induce the reaction of individual molecules with predefined subsurface H or D features. In the case of Pd{110}, we found a much more pronounced effect from subsurface D, as it is influenced by the surface directionality. These experiments facilitate an understanding of the role of surface and subsurface H and D in heterogeneous catalytic processes, specifically in the hydrodesulfuization (HDS) of thiophene, an important and ubiquitous component found to be detrimental to petroleum refining.
Date:
January 20, 2014
Creator:
Weiss, Paul
Object Type:
Report
System:
The UNT Digital Library
Local Optical Spectroscopies for Subnanometer Spatial Resolution Chemical Imaging
The evanescently coupled photon scanning tunneling microscopes (STMs) have special requirements in terms of stability and optical access. We have made substantial improvements to the stability, resolution, and noise floor of our custom-built visible-photon STM, and will translate these advances to our infrared instrument. Double vibration isolation of the STM base with a damping system achieved increased rigidity, giving high tunneling junction stability for long-duration and high-power illumination. Light frequency modulation with an optical chopper and phase-sensitive detection now enhance the signal-to-noise ratio of the tunneling junction during irradiation.
Date:
January 20, 2014
Creator:
Weiss, Paul
Object Type:
Report
System:
The UNT Digital Library
Noble Gas Concept Of Operation
None
Date:
January 20, 2014
Creator:
Carrigan, C R
Object Type:
Report
System:
The UNT Digital Library
Strategies for Probing Nanometer-Scale Electrocatalysts: From Single Particles to Catalyst-Membrane Architectures
The project primary objectives are to prepare and elucidate the promoting properties of materials that possess high activity for the conversion of hydrogen and related small molecules (water, oxygen, carbon monoxide and methanol) in polymer electrolyte fuel cells. One area of research has focused on the study of catalyst materials. Protocols were developed for probing the structure and benchmarking the activity of Pt and Pt bimetallic nanometer-scale catalyst against Pt single crystal electrode standards. A second area has targeted fuel cell membrane and the advancement of simple methods mainly based on vibrational spectroscopy that can be applied broadly in the study of membrane structure and transport properties. Infrared and Raman methods combined with least-squares data modeling were applied to investigate and assist the design of robust, proton conductive membranes, which resist reactant crossover.
Date:
January 20, 2014
Creator:
Korzeniewski, Carol
Object Type:
Report
System:
The UNT Digital Library
Final Report for DUSEL R&D: BetaCage: A Screener of Ultra-Low-Level Radioactive Surface Contamination
The eventual full-size, radiopure BetaCage will be a low-background, atmospheric-pressure neon drift chamber with unprecedented sensitivity to emitters of low-energy electrons and alpha particles. We expect that the prototype BetaCage already developed will be an excellent screener of alpha particles. Both the prototype and final BetaCage will provide new infrastructure for rare-event science.
Date:
December 20, 2013
Creator:
Golwala, Sunil R.
Object Type:
Report
System:
The UNT Digital Library
FINAL TECHNICAL REPORT: Underwater Active Acoustic Monitoring Network For Marine And Hydrokinetic Energy Projects
This project saw the completion of the design and development of a second generation, high frequency (90-120 kHz) Subsurface-Threat Detection Sonar Network (SDSN). The system was deployed, operated, and tested in Cobscook Bay, Maine near the site the Ocean Renewable Power Company TidGen™ power unit. This effort resulted in a very successful demonstration of the SDSN detection, tracking, localization, and classification capabilities in a high current, MHK environment as measured by results from the detection and tracking trials in Cobscook Bay. The new high frequency node, designed to operate outside the hearing range of a subset of marine mammals, was shown to detect and track objects of marine mammal-like target strength to ranges of approximately 500 meters. This performance range results in the SDSN system tracking objects for a significant duration - on the order of minutes - even in a tidal flow of 5-7 knots, potentially allowing time for MHK system or operator decision-making if marine mammals are present. Having demonstrated detection and tracking of synthetic targets with target strengths similar to some marine mammals, the primary hurdle to eventual automated monitoring is a dataset of actual marine mammal kinematic behavior and modifying the tracking algorithms and parameters which …
Date:
December 20, 2013
Creator:
Stein, Peter J. & Edson, Patrick L.
Object Type:
Report
System:
The UNT Digital Library
Lawrence Livermore National Laboratory Experimental Test Site, Site 300, Biological Review, January 1, 2009 through December 31, 2012
None
Date:
December 20, 2013
Creator:
Paterson, L. E. & Woollett, J. S.
Object Type:
Report
System:
The UNT Digital Library
Microstructure and Property Evolution in Advanced Cladding and Duct Materials Under Long-Term Irradiation at Elevated Temperature: Critical Experiments
The in-service degradation of reactor core materials is related to underlying changes in the irradiated microstructure. During reactor operation, structural components and cladding experience displacement of atoms by collisions with neutrons at temperatures at which the radiation-induced defects are mobile, leading to microstructure evolution under irradiation that can degrade material properties. At the doses and temperatures relevant to fast reactor operation, the microstructure evolves by microchemistry changes due to radiation-induced segregation, dislocation loop formation and growth, radiation induced precipitation, destabilization of the existing precipitate structure, as well as the possibility for void formation and growth. These processes do not occur independently; rather, their evolution is highly interlinked. Radiation-induced segregation of Cr and existing chromium carbide coverage in irradiated alloy T91 track each other closely. The radiation-induced precipitation of Ni-Si precipitates and RIS of Ni and Si in alloys T91 and HCM12A are likely related. Neither the evolution of these processes nor their coupling is understood under the conditions required for materials performance in fast reactors (temperature range 300-600°C and doses to 200 dpa and beyond). Further, predictive modeling is not yet possible, as models for microstructure evolution must be developed along with experiments to characterize these key processes and provide …
Date:
December 20, 2013
Creator:
Was, Gary; Jiao, Zhijie; Allen, Todd & Yang, Yong
Object Type:
Report
System:
The UNT Digital Library
Saltstone 3QCY13 TCLP Results
A Saltstone waste form was prepared in the Savannah River National Laboratory (SRNL) from a Tank 50H sample and Z-Area premix material for the third quarter of calendar year 2013 (3QCY13). After a 63 day cure, samples of the saltstone were collected, and the waste form was shown to meet the South Carolina Hazardous Waste Management Regulations (SCHWMR) R.61-79.261.24 and R.61-79.268.48(a) requirements for a nonhazardous waste form with respect to RCRA metals and underlying hazardous constituents. These analyses met all quality assurance specifications of USEPA SW-846.
Date:
December 20, 2013
Creator:
Miller, D. H.
Object Type:
Report
System:
The UNT Digital Library
Understanding the Subsurface Reactive Transport of Transuranic Contaminants at DOE Sites
Our primary hypothesis is that actinides can interact with surfaces in fundamentally different ways than other metals, metalloids, and oxyanions and that this fundamental difference requires new approaches to studying and modeling transuranic sorption to minerals and geomedia. This project supports a key mission of the SBR program to develop sufficient scientific understanding such that DOE sites will be able to incorporate coupled physical, chemical, and biological processes into decision making for environmental management and long-term stewardship, while also supporting DOE’s commitment to education, training, and collaboration with DOE user facilities.
Date:
December 20, 2013
Creator:
Barnett, Mark O.; Albrecht-Schmitt, Thomas E.; Saiers, James E. & Shuh, David K.
Object Type:
Report
System:
The UNT Digital Library
Verification & Validation of High-Order Short-Characteristics-Based Deterministic Transport Methodology on Unstructured Grids
The research team has developed a practical, high-order, discrete-ordinates, short characteristics neutron transport code for three-dimensional configurations represented on unstructured tetrahedral grids that can be used for realistic reactor physics applications at both the assembly and core levels. This project will perform a comprehensive verification and validation of this new computational tool against both a continuous-energy Monte Carlo simulation (e.g. MCNP) and experimentally measured data, an essential prerequisite for its deployment in reactor core modeling. Verification is divided into three phases. The team will first conduct spatial mesh and expansion order refinement studies to monitor convergence of the numerical solution to reference solutions. This is quantified by convergence rates that are based on integral error norms computed from the cell-by-cell difference between the code’s numerical solution and its reference counterpart. The latter is either analytic or very fine- mesh numerical solutions from independent computational tools. For the second phase, the team will create a suite of code-independent benchmark configurations to enable testing the theoretical order of accuracy of any particular discretization of the discrete ordinates approximation of the transport equation. For each tested case (i.e. mesh and spatial approximation order), researchers will execute the code and compare the resulting numerical …
Date:
December 20, 2013
Creator:
Azmy, Yousry & Wang, Yaqi
Object Type:
Report
System:
The UNT Digital Library
Evaluation of CD Scribed Strip from the 1st Continental Disc
None
Date:
November 20, 2013
Creator:
Shen, T. H. & Dye, T. Y.
Object Type:
Report
System:
The UNT Digital Library
METHODS OF PREVENTING THE SPREAD OF ZINC CONTAMINATION DURING VACUUM PROCESSING
Radioactive zinc, {sup 65}Zn, was detected after a thermal vacuum process that extracted a desired product from articles out of a commercial light water reactor. While the facility is designed to handle radioactive materials, the location of the {sup 65}Zn was in an area that is not designed for gamma emitting contaminants. A series of experiments were conducted to entrain the contaminant in an easily replaceable trap within the process piping. The experiments were conducted with increasing levels of complexity. Initially a simple apparatus was developed to determine the effect of substrate temperature on the vapor capture, this was followed by experiments to determine the effect of filter pore size on pumping and trapping, finally the interactive effects of both pore size and temperature were evaluated. The testing was conducted on a system that used a roughing vacuum pump using model and prototypic materials. It was determined that heating the substrate to nominally 200°C resulted in effective trapping on the model as well as prototypic material.
Date:
November 20, 2013
Creator:
Korinko, P.; Stoner, K. & Duncan, A.
Object Type:
Article
System:
The UNT Digital Library
Plasmon Messurements with a Seeded X-ray Laser
None
Date:
November 20, 2013
Creator:
Fletcher, L. B.; Galtier, E.; Heimann, P.; Lee, H. J.; Nagler, B.; Welch, J. et al.
Object Type:
Article
System:
The UNT Digital Library
SOLVENT HOLD TANK SAMPLE RESULTS FOR MCU-13-1403/1404/1405/1406/1407/1408: QUARTERLY SAMPLE FROM SEPTEMBER 2013
Savannah River National Laboratory (SRNL) analyzed solvent samples from the Modular Caustic-Side Solvent Extraction Unit (MCU) in support of continuing operations. A quarterly analysis of the solvent is required to maintain solvent composition within specifications. Analytical results of the analyses of Solvent Hold Tank (SHT) samples MCU-13-1403, MCU-13-1404, MCU-13-1405, MCU-13-1406, MCU-13-1407, and MCU-13-1408 received on September 17, 2013 are reported. This sample was taken after the addition of the Next Generation Solvent (NGS) cocktail to produce a NGS-MCU blended solvent. The results show that the solvent contains a slight excess of Isopar� L and a deficit concentration of modifier and TiDG when compared to the target composition. Addition of TiDG trim is recommended. SRNL also analyzed the SHT sample for {sup 137}Cs content and determined the measured value is within tolerance and that the value has returned to levels observed in 2011. In contrast to what was observed in the heel prior to adding the NGS cocktail, no organic impurities were detected in these solvent samples.
Date:
November 20, 2013
Creator:
Fondeur, F. & Taylor-Pashow, K.
Object Type:
Report
System:
The UNT Digital Library
All Weather Calibration of Wide Field Optical and NIR Surveys
None
Date:
September 20, 2013
Creator:
Burke, David L.; Saha, Abhijit; Claver, Jenna; Axelrod, T.; Claver, Chuck; DePoy, Darren et al.
Object Type:
Article
System:
The UNT Digital Library
Automatic Alignment of the Advanced Radiographic Capability for the National Ignition Facility
None
Date:
September 20, 2013
Creator:
Wilhelmsen, K.; Bliss, E.; Brunton, G.; Fishler, B.; Heebner, J.; Lowe-Webb, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Ensemble Feature Selection in Scientific Data Analysis
None
Date:
September 20, 2013
Creator:
Sisto, A & Kamath, C
Object Type:
Report
System:
The UNT Digital Library
Final Report on ORDER No. 5312-20110620-JOHNSON-01ITER: Core Imaging X-Ray Spectrometer Conceptual Design Review Support
None
Date:
September 20, 2013
Creator:
Beiersdorfer, P
Object Type:
Report
System:
The UNT Digital Library
High Speed, Low Cost Fabrication of Gas Diffusion Electrodes for Membrane Electrode Assemblies
Fabrication of membrane electrode assemblies (MEAs) depends on creating inks or pastes of catalyst and binder, and applying this suspension to either the membrane (catalyst coated membrane) or gas diffusion media (gas diffusion electrode) and respectively laminating either gas diffusion media or gas diffusion electrodes (GDEs) to the membrane. One barrier to cost effective fabrication for either of these approaches is the development of stable and consistent suspensions. This program investigated the fundamental forces that destabilize the suspensions and developed innovative approaches to create new, highly stable formulations. These more concentrated formulations needed fewer application passes, could be coated over longer and wider substrates, and resulted in significantly lower coating defects. In March of 2012 BASF Fuel Cell released a new high temperature product based on these advances, whereby our customers received higher performing, more uniform MEAs resulting in higher stack build yields. Furthermore, these new materials resulted in an “instant” increase in capacity due to higher product yields and material throughput. Although not part of the original scope of this program, these new formulations have also led us to materials that demonstrate equivalent performance with 30% less precious metal in the anode. This program has achieved two key milestones …
Date:
September 20, 2013
Creator:
DeCastro, Emory S.; Tsou, Yu-Min & Liu, Zhenyu
Object Type:
Report
System:
The UNT Digital Library
Opportunities for Process Monitoring Techniques at Delayed Access Facilities
Except for specific cases where the International Atomic Energy Agency (IAEA) maintains a continuous presence at a facility (such as the Japanese Rokkasho Reprocessing Plant), there is always a period of time or delay between the moment a State is notified or aware of an upcoming inspection, and the time the inspector actually enters the material balance area or facility. Termed by the authors as “delayed access,” this period of time between inspection notice and inspector entrance to a facility poses a concern. Delayed access also has the potential to reduce the effectiveness of measures applied as part of the Safeguards Approach for a facility (such as short-notice inspections). This report investigates the feasibility of using process monitoring to address safeguards challenges posed by delayed access at a subset of facility types.
Date:
September 20, 2013
Creator:
Curtis, Michael M.; Gitau, Ernest TN; Johnson, Shirley J.; Schanfein, Mark & Toomey, Christopher
Object Type:
Report
System:
The UNT Digital Library
Optimizing Blocker Usage On NIF Using Image Analysis And Machine Learning*
None
Date:
September 20, 2013
Creator:
Kegelmeyer, L M; Senecal, J G; Conder, A D; Lane, L A; Nostrand, M C & Whitman, P K
Object Type:
Article
System:
The UNT Digital Library