Laser Drilling: Drilling with the Power of Light Phase 1: Feasibility Study (open access)

Laser Drilling: Drilling with the Power of Light Phase 1: Feasibility Study

A laser drilling research team was formed from members of academia, industry and national laboratory to explore the feasibility of using modern high-powered lasers to drill and complete oil and gas wells. The one-year Phase 1 study discussed in this report had the goals of quantifying the amount of pulsed infrared laser energy needed to spall and melt rock of varying lithologies and to investigate the possibility of accomplishing the same task in water under atmospheric conditions. Previous work by some members of this team determined that continuous wave lasers of varying wavelengths have more than enough power to cut, melt and vaporize rock. Samples of sandstone, limestone, and shale were prepared for laser beam interaction with a 1.6 kW pulsed Nd:YAG laser beam to determine how the beam's size, power, repetition rate, pulse width, exposure time and energy can affect the amount of energy transferred to the rock for the purposes of spallation, melting and vaporization. The purpose of the laser rock interaction experiment was to determine the threshold parameters required to remove a maximum rock volume from the samples while minimizing energy input. Absorption of radiant energy from the laser beam gives rise to the thermal energy transfer …
Date: September 1, 2001
Creator: Gahan, Brian C.; Parker, Richard A.; Graves, Ramona; Batarseh, Samih; Reed, Claude B.; Xu, Zhiyue et al.
Object Type: Report
System: The UNT Digital Library
Remote-Handled Transuranic Content Codes (open access)

Remote-Handled Transuranic Content Codes

The Remote-Handled Transuranic (RH-TRU) Content Codes (RH-TRUCON) document representsthe development of a uniform content code system for RH-TRU waste to be transported in the 72-Bcask. It will be used to convert existing waste form numbers, content codes, and site-specificidentification codes into a system that is uniform across the U.S. Department of Energy (DOE) sites.The existing waste codes at the sites can be grouped under uniform content codes without any lossof waste characterization information. The RH-TRUCON document provides an all-encompassing|description for each content code and compiles this information for all DOE sites. Compliance withwaste generation, processing, and certification procedures at the sites (outlined in this document foreach content code) ensures that prohibited waste forms are not present in the waste. The contentcode gives an overall description of the RH-TRU waste material in terms of processes and|packaging, as well as the generation location. This helps to provide cradle-to-grave traceability ofthe waste material so that the various actions required to assess its qualification as payload for the72-B cask can be performed. The content codes also impose restrictions and requirements on themanner in which a payload can be assembled.The RH-TRU Waste Authorized Methods for Payload Control (RH-TRAMPAC), Appendix 1.3.7of the 72-B Cask Safety Analysis …
Date: August 1, 2001
Creator: Solutions, Washington TRU
Object Type: Report
System: The UNT Digital Library
Thermal-neutron capture for A=26-35 (open access)

Thermal-neutron capture for A=26-35

The prompt gamma-ray data of thermal- neutron captures fornuclear mass number A=26-35 had been evaluated and published in "ATOMICDATA AND NUCLEAR DATA TABLES, 26, 511 (1981)". Since that time themanyexperimental data of the thermal-neutron captures have been measuredand published. The update of the evaluated prompt gamma-ray data is verynecessary for use in PGAA of high-resolution analytical prompt gamma-rayspectroscopy. Besides, the evaluation is also very needed in theEvaluated Nuclear Structure Data File, ENSDF, because there are no promptgamma-ray data in ENSDF. The levels, prompt gamma-rays and decay schemesof thermal-neutron captures for nuclides (26Mg, 27Al, 28Si, 29Si, 30Si,31P, 32S, 33S, 34S, and 35Cl) with nuclear mass number A=26-35 have beenevaluated on the basis of all experimental data. The normalizationfactors, from which absolute prompt gamma-ray intensity can be obtained,and necessary comments are given in the text. The ENSDF format has beenadopted in this evaluation. The physical check (intensity balance andenergy balance) of evaluated thermal-neutron capture data has been done.The evaluated data have been put into Evaluated Nuclear Structure DataFile, ENSDF. This evaluation may be considered as an update of the promptgamma-ray from thermal-neutron capture data tables as published in"ATOMIC DATA AND NUCLEAR DATA TABLES, 26, 511 (1981)".
Date: June 1, 2001
Creator: Chunmei, Z. & Firestone, R.B.
Object Type: Report
System: The UNT Digital Library
Electronic Surface Structures of Coal and Mineral Particles (open access)

Electronic Surface Structures of Coal and Mineral Particles

Surface science studies related to tribocharging and charge separation studies were performed on electrostatic beneficiation of coal. In contrast to other cleaning methods, electrostatic beneficiation is a dry cleaning process requiring no water or subsequent drying. Despite these advantages, there is still uncertainty in implementing large scale commercial electrostatic beneficiation of coal. The electronic surface states of coal macerals and minerals are difficult to describe due to their chemical complexity and variability [1]. The efficiency in separation of mineral particles from organic macerals depends upon these surface states. Therefore, to further understand and determine a reason for the bipolar charging observed in coal separation, surface analysis studies using Ultra-violet Photoelectron Spectroscopy (UPS) and X-ray Photoelectron Spectroscopy (XPS) were performed on coal samples and several materials that are used or considered for use in tribocharging. Electrostatic charging is a surface phenomenon, so the electronic surface states of the particles, which are influenced by the environmental conditions, determine both polarity and magnitude of tribocharging. UPS was used to measure the work function of the materials as typically used in ambient air. XPS was used to determine the surface chemistry in the form of contamination and degree of oxidation under the same environmental …
Date: April 1, 2001
Creator: Mazumder, M.K.; Lindquist, D.A.; Tennal, K.B.; Trigwell, Steve; Farmer, Steve; Nutsukpul, Albert et al.
Object Type: Report
System: The UNT Digital Library
Development of the INEEL Site Wide Vadose Zone Roadmap (open access)

Development of the INEEL Site Wide Vadose Zone Roadmap

The INEEL Vadose Zone Roadmap was developed to identify inadquacies in current knowledge, to assist in contaminant management capabilities relative to the INEEL vadose zone, and to ensure that ongoing and planned Science and Technology developments will meet the risk management challenges facing the INEEL in coming years. The primary objective of the Roadmap is to determine the S&T needs that will facilitate monitoring, characterization, prediction, and assessment activities necessary to support INEEL risk management decisions and to ensure that long-term stewardship of contaminated sites at the INEEL is achieved. The mission of the Roadmap is to insure that the long-term S&T strategy is aligned with site programs, that it takes advantage of progress made to date, and that it can assist in meeting the milestones and budgets of operations.
Date: September 1, 2001
Creator: Yonk, Alan Keith
Object Type: Report
System: The UNT Digital Library
The Application of System Dynamics to the Integration of National Laboratory Research and K-12 Education (open access)

The Application of System Dynamics to the Integration of National Laboratory Research and K-12 Education

The Idaho National Engineering and Environmental Laboratory (INEEL) is dedicated to finding solutions to problems related to the environment, energy, economic competitiveness, and national security. In an effort to attract and retain the expertise needed to accomplish these challenges, the INEEL is developing a program of broad educational opportunities that makes continuing education readily available to all laboratory employees, beginning in the K–12 environment and progressing through post-graduate education and beyond. One of the most innovative educational approaches being implemented at the laboratory is the application of STELLA© dynamic learning environments, which facilitate captivating K–12 introductions to the complex energy and environmental challenges faced by global societies. These simulations are integrated into lesson plans developed by teachers in collaboration with INEEL scientists and engineers. This approach results in an enjoyable and involved learning experience, and an especially positive introduction to the application of science to emerging problems of great social and environmental consequence.
Date: August 1, 2001
Creator: Mills, James Ignatius & Zounar Harbour, Elda D
Object Type: Article
System: The UNT Digital Library
Wax Point Determinations Using Acoustic Resonance Spectroscopy (open access)

Wax Point Determinations Using Acoustic Resonance Spectroscopy

The thermodynamic characterization of the wax point of a given crude is essential in order to maintain flow conditions that prevent plugging of undersea pipelines. This report summarizes the efforts made towards applying an Acoustic Cavity Resonance Spectrometer (ACRS) to the determination of pressures and temperatures at which wax precipitates from crude. Phillips Petroleum Company, Inc., the CRADA participant, supplied the ACRS. The instrumentation was shipped to Dr. Thomas Schmidt of ORNL, the CRADA contractor, in May 2000 after preliminary software development performed under the guidance of Dr. Samuel Colgate and Dr. Evan House of the University of Florida, Gainesville, Fl. Upon receipt it became apparent that a number of modifications still needed to be made before the ACRS could be precisely and safely used for wax point measurements. This report reviews the sequence of alterations made to the ACRS, as well as defines the possible applications of the instrumentation once the modifications have been completed. The purpose of this Cooperative Research and Development Agreement (CRADA) between Phillips Petroleum Company, Inc. (Participant) and Lockheed Martin Energy Research Corporation (Contractor) was the measurement of the formation of solids in crude oils and petroleum products that are commonly transported through pipelines. This …
Date: June 1, 2001
Creator: Bostick, D. T.; Jubin, R. T. & Schmidt, T. W.
Object Type: Report
System: The UNT Digital Library
Habitat Evaluation Procedures (HEP) Report : Ladd Marsh, 2001 Technical Report. (open access)

Habitat Evaluation Procedures (HEP) Report : Ladd Marsh, 2001 Technical Report.

Since the mid-1980s, the Oregon Department of Fish and Wildlife (ODFW) has been participating in the Bonneville Power Administration's (BPA's) efforts to mitigate for the negative impacts to fish and wildlife resulting from the development and operation of the 7 Columbia Basin Federal Hydropower System. BPA's mitigation obligations were formally recognized and mandated by the Northwest Power Act of 1980 and are guided by the Northwest Power Planning Council's (NWPPC's) Columbia Basin Fish and Wildlife Program. BPA funds fish and wildlife projects throughout the Basin to meet the habitat and population restorative goals and objectives outlined in the NWPPC's Fish and Wildlife Program and to fulfill its mitigation responsibilities under the Power Act. Impacts to wildlife resulting from hydrofacility construction/inundation were estimated using Habitat Evaluation Procedures (HEP) in the mid and late 1980s and are documented in BPA' s Wildlife Loss Assessments (Rasmussen and Wright 1990,a,b,c,d) and in the U.S. Army Corps of Engineers Lower Snake River Wildlife Habitat Compensation Evaluation (ACOE 1991). The loss assessments provided estimates of lost habitat quality and quantity for the target species selected to represent the habitat cover types impacted by hydropower construction/inundation. The NWPPC incorporated these losses into their Fish and Wildlife Program, …
Date: October 1, 2001
Creator: Wildlife, Oregon Department of Fish and
Object Type: Report
System: The UNT Digital Library
Effects of Alloy Chemistry, Cold Work, and Water Chemistry on Corrosion Fatigue and Stress Corrosion Cracking of Nickel Alloys and Welds. (open access)

Effects of Alloy Chemistry, Cold Work, and Water Chemistry on Corrosion Fatigue and Stress Corrosion Cracking of Nickel Alloys and Welds.

Reactor vessel internal components made of nickel-base alloys are susceptible to environmentally assisted cracking (EAC). A better understanding of the causes and mechanisms of this cracking may permit less conservative estimates of damage accumulation and requirements on inspection intervals. The objective of this work is to evaluate and compare the resistance of Alloys 600 and 690 and their welds, such as Alloys 82, 182, 52, and 152, to EAC in simulated light water reactor environments. The existing crack growth rate (CGR) data for these alloys under cyclic and constant loads have been evaluated to establish the effects of alloy chemistry, cold work, and water chemistry. The experimental fatigue CGRs are compared with CGRs that would be expected in air under the same mechanical loading conditions to obtain a qualitative understanding of the degree and range of conditions for significant environmental enhancement in growth rates. The existing stress corrosion cracking (SCC) data on Alloys 600 and 690 and Alloy 82, 182, and 52 welds have been compiled and analyzed to determine the influence of key parameters on growth rates in simulated PWR and BWR environments. The SCC data for these alloys have been evaluated with correlations developed by Scott and by …
Date: April 1, 2001
Creator: Chopra, O. K.; Soppet, W. K.; Shack, W. J. & Technology, Energy
Object Type: Report
System: The UNT Digital Library
A monitoring sensor management system for grid environments (open access)

A monitoring sensor management system for grid environments

Large distributed systems, such as computational grids,require a large amount of monitoring data be collected for a variety oftasks, such as fault detection, performance analysis, performance tuning,performance prediction and scheduling. Ensuring that all necessarymonitoring is turned on and that the data is being collected can be avery tedious and error-prone task. We have developed an agent-basedsystem to automate the execution of monitoring sensors and the collectionof event data.
Date: June 1, 2001
Creator: Tierney, Brian; Crowley, Brian; Gunter, Dan; Lee, Jason & Thompson, Mary
Object Type: Article
System: The UNT Digital Library
Habitat Evaluation Procedures (HEP) Report; Big Island - The McKenzie River, Technical Report 1998-2001. (open access)

Habitat Evaluation Procedures (HEP) Report; Big Island - The McKenzie River, Technical Report 1998-2001.

The Big Island site is located in the McKenzie River flood plain, containing remnant habitats of what was once more common in this area. A diverse array of flora and fauna, representing significant wildlife habitats, is present on the site. Stands of undisturbed forested wetlands, along with riparian shrub habitats and numerous streams and ponds, support a diversity of wildlife species, including neotropical migratory songbirds, raptors, mammals, reptiles, and amphibians (including two State-listed Sensitive Critical species). The project is located in eastern Springfield, Oregon (Figure 1). The project area encompasses 187 acres under several ownerships in Section 27 of Township 17S, Range 2W. Despite some invasion of non-native species, the site contains large areas of relatively undisturbed wildlife habitat. Over several site visits, a variety of wildlife and signs of wildlife were observed, including an active great blue heron rookery, red-Legged frog egg masses, signs of beaver, and a bald eagle, Wildlife habitat values resulting from the purchase of this site will contribute toward the goal of mitigating for habitat lost as outlined in the Bonneville Power Administration's (BPA) Mitigation and Enhancement Plan for the Willamette River Basin. Under this Plan, mitigation goals and objectives were developed as a result …
Date: March 1, 2001
Creator: Sieglitz, Greg
Object Type: Report
System: The UNT Digital Library
X-ray Measurements of a Thermo Scientific P385 DD Neutron Generator (open access)

X-ray Measurements of a Thermo Scientific P385 DD Neutron Generator

Idaho National Laboratory is experimenting with electrical neutron generators, as potential replacements for californium-252 radioisotopic neutron sources in its PINS prompt gamma-ray neutron activation analysis (PGNAA) system for the identification of military chemical warfare agents and explosives. In addition to neutron output, we have recently measured the x-ray output of the Thermo Scientific P385 deuterium-deuterium neutron generator. X-rays are a normal byproduct from a neutron generator and depending on their intensity and energy they can interfere with gamma rays from the object under test, increase gamma-spectrometer dead time, and reduce PGNAA system throughput. The P385 x-ray energy spectrum was measured with a high-purity germanium (HPGe) detector, and a broad peak is evident at about 70 keV. To identify the source of the x-rays within the neutron generator assembly, it was scanned by collimated scintillation detectors along its long axis. At the strongest x-ray emission points, the generator also was rotated 60° between measurements. The scans show the primary source of x-ray emission from the P385 neutron generator is an area 60 mm from the neutron production target, in the vicinity of the ion source. Rotation of the neutron generator did not significantly alter the x-ray count rate, and the x-ray …
Date: August 1, 2001
Creator: Seabury, E. H.; Chichester, D. L.; Caffrey, A. J.; Simpson, J.; Lemchak, M. & Wharton, C. J.
Object Type: Article
System: The UNT Digital Library
Data Management Guide for FEMIS Version 1.5 (open access)

Data Management Guide for FEMIS Version 1.5

The Federal Emergency Management System (FEMIS) is an emergency management planning and response tool. The FEMIS Data Management Guide provides the information needed to manage the data used to support the administrative, user-environment, database management, and operational capabilities of FEMIS.
Date: December 1, 2001
Creator: Bower, John C.; Burnett, Robert A.; Carter, Richard J.; Holter, Nancy A.; Hoza, Mark; Johnson, Daniel M. et al.
Object Type: Text
System: The UNT Digital Library
Phase-Dependent Carrier Processes in Silicon-Based Photovoltaic Materials: Preprint (open access)

Phase-Dependent Carrier Processes in Silicon-Based Photovoltaic Materials: Preprint

Presented at the 2001 NCPV Program Review Meeting: Comparative studies of dynamics of photoexcited carriers in range of Si-based materials of interest for PV applications.
Date: October 1, 2001
Creator: Dexheimer, S. L.; Myers, K. E.; Liu, J.; Wang, Q. & Nelson, B. P.
Object Type: Article
System: The UNT Digital Library
Energy Matters - Fall 2001 (open access)

Energy Matters - Fall 2001

Quarterly newsletter from DOE's Office of Industrial Technologies to promote the use of energy-efficient industrial systems. This issue's focus is alternative power sources.
Date: October 1, 2001
Creator: unknown
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Light-Biasing Electron-Beam-Induced-Current Measurements for Multijunction Solar Cells: Preprint (open access)

Light-Biasing Electron-Beam-Induced-Current Measurements for Multijunction Solar Cells: Preprint

Presented at the 2001 NCPV Program Review Meeting: Results using light-biasing EBIC are illustrated for dual-junction InGaP/InGaAs solar cells.
Date: October 1, 2001
Creator: Romero, M. J.; Olson, J. M. & Al-Jassim, M. M.
Object Type: Article
System: The UNT Digital Library
Buildings for the 21st Century, Fall 2001 (open access)

Buildings for the 21st Century, Fall 2001

The Buildings for the 21st Century newsletter is produced by the Office of Building Technology, State and Community Programs and contains information on building programs, events, products, and initiatives, with a focus on energy efficiency and renewable energy. The fall issue includes information on weatherization, Boise's geothermal heating system, the BTS Core Databook, the Solar Decathlon, a Rebuild America partnership, the BigHorn Home Improvement Center, AIA's Top Ten Buildings, a sub-CFL procurement program, the U.S. investment in energy efficient research, new efficiency standards, PNNL's building software, and a calendar of meetings and conferences.
Date: October 1, 2001
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Thin Film Partnership National Research Teams: Preprint (open access)

Thin Film Partnership National Research Teams: Preprint

Presented at the 2001 NCPV Program Review Meeting: The Thin Film Partnership has organized three National Research Teams in CIS, CdTe, and amorphous silicon.
Date: October 1, 2001
Creator: Zweibel, K.
Object Type: Article
System: The UNT Digital Library
Performance Summary for the First Solar CdTe 1-kW System: Preprint (open access)

Performance Summary for the First Solar CdTe 1-kW System: Preprint

Presented at the 2001 NCPV Program Review Meeting: Describes performance of 1-kWac CdTe PV array from First Solar operated at NREL from 6/95 to 14/00. This paper describes the performance of a 1-kW{sub ac} CdTe PV array from First Solar (formerly Solar Cells, Inc.) operated at NREL from June 1995 to November 2000. The PV array operating efficiencies over the 5.5-year period were calculated from 15-minute averages to determine changes in seasonal and annual performance. Performance measurements of each module were also made before installing the modules outdoors and again in August 2000 using NREL's indoor SPIRE 240A pulsed solar simulator and the Standard Outdoor Measurement System (SOMS). Although some modules showed increases in efficiency and others decreases, the average efficiency of the modules in the PV array did not change. For modules that showed changes in efficiency, analysis of module I-V parameters indicated that the changes in efficiency were primarily a consequence of changes in fill factor.
Date: October 1, 2001
Creator: Marion, B.; del Cueto, J.; McNutt, P. & Rose, D.
Object Type: Article
System: The UNT Digital Library
Final Report on LLNL Subcontract B503962 Atlas (open access)

Final Report on LLNL Subcontract B503962 Atlas

Determining and characterizing the effectiveness of run-time optimization techniques is particularly relevant to modern sparse linear algebra software libraries that tend to hide from the user the internal storage format. For instance, a certain storage structure may dictate a particular algorithmic approach. Once a general scheme of access has been found based on a storage structure, one promising idea involves analyzing the sparsity pattern of the matrix operand to find places where the efficient static optimization techniques may be re-used. There are numerous ways in which this can be done, and it is almost certain that there will be no provably best way. In this case, it will also be necessary to search the space of available options during run-time. We have experimented with a variety of techniques for optimizing sparse matrix vector multiplication to take instruction sets, functional units, and memory hierarchies into account on the Power 3 architecture. Sparse matrix-vector multiplication is of course the inner loop in any iterative solver, even multigrid, since it includes all the interpolation, restriction, and smoothing operations. The structural properties of the application leads to sparse matrices that feature a sufficiently regular pattern, so that the automatic optimization techniques already integrated in …
Date: July 1, 2001
Creator: Dongarra, J & Falgout, R
Object Type: Report
System: The UNT Digital Library
Concentrating Photovoltaics: Collaborative Opportunities within DOEs CSP and PV Programs; Preprint (open access)

Concentrating Photovoltaics: Collaborative Opportunities within DOEs CSP and PV Programs; Preprint

Presented at the 2001 NCPV Program Review Meeting: DOEs Concentrating Solar Power program is investigating the viability of concentrating PV converters as an alternative to thermal conversion devices.
Date: October 1, 2001
Creator: Mehos, M.; Lewandowski, A.; Symko-Davies, M. & Kurtz, S.
Object Type: Article
System: The UNT Digital Library
Louis Stokes Laboratories, Building 50, National Institutes of Health, Bethesda, Maryland: Laboratories for the 21st Century Case Studies (open access)

Louis Stokes Laboratories, Building 50, National Institutes of Health, Bethesda, Maryland: Laboratories for the 21st Century Case Studies

This case study was prepared by participants in the Laboratories for the 21st Century program, a joint endeavor of the U.S. Environmental Protection Agency and the U.S. Department of Energy's Federal Energy Management Program. The goal of this program is to foster greater energy efficiency in new laboratory buildings for both the public and the private sectors. Retrofits of existing laboratories are also encouraged. The energy-efficient features of the new laboratories in Building 50 at the National Institutes of Health in Bethesda, Maryland, include extensive use of daylighting, variable-air-volume control of the ventilation air supply and exhaust air system, and a unique energy recovery system that makes use of large desiccant energy wheels. With nearly 300,000 gross square feet, the building is estimated to use much less energy than traditional research facilities consume because of its energy-efficient design and features.
Date: December 1, 2001
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Highlighting High Performance: Department of Environmental Protection; Cambria Office Building, Ebensburg, Pennsylvania (open access)

Highlighting High Performance: Department of Environmental Protection; Cambria Office Building, Ebensburg, Pennsylvania

The 36,000-square-foot Cambria Office building in Ebensbug, Pennsylvania houses the Pennsylvania Department of Environmental Protection. Designers of the energy-efficient building used integrated design to minimize energy use and pollution created in the production of the materials they used, and reduced the overall pollution and environmental impact the building will create over its lifetime. The building also employs daylighting and renewable energy technologies.
Date: October 1, 2001
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Highlighting High Performance: Four Times Square (open access)

Highlighting High Performance: Four Times Square

4 Times Square is a 48-story environmentally responsible building in New York City. Developed by the Durst Organization, the building is the first project of its size to adopt standards for energy efficiency, indoor ecology, sustainable materials, and responsible construction, operations, and maintenance procedures. Designers used a whole-building approach--considering how the building's systems can work together most efficiently--and educated tenants on the benefits of the design.
Date: November 1, 2001
Creator: unknown
Object Type: Text
System: The UNT Digital Library