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Guidelines for beamline and front-end radiation shielding design at the Advanced Photon Source.

Description: Shielding for the APS will be such that the individual radiation worker dose will be as low as reasonably achievable (ALARA). The ALARA goals for the APS are to keep the total of the work-related radiation exposure (exposure coming from other than natural or medical sources) as far below 500 person-mrem per year, collective total effective dose equivalent, as reasonably achievable. For an individual APS radiation worker, the goal is to keep the maximum occupational total effective dose equivale… more
Date: September 11, 2008
Creator: Fernandez, P. & Division, X-Ray Science
Partner: UNT Libraries Government Documents Department
open access

User's Manual for RESRAD-OFFSITE Version 2.

Description: The RESRAD-OFFSITE code is an extension of the RESRAD (onsite) code, which has been widely used for calculating doses and risks from exposure to radioactively contaminated soils. The development of RESRAD-OFFSITE started more than 10 years ago, but new models and methodologies have been developed, tested, and incorporated since then. Some of the new models have been benchmarked against other independently developed (international) models. The databases used have also expanded to include all the… more
Date: September 5, 2007
Creator: Yu, C.; Gnanapragasam, E.; Biwer, B. M.; Kamboj, S.; Cheng, J. J.; Klett, T. et al.
Partner: UNT Libraries Government Documents Department
open access

Trip report for field visit to Fayetteville Shale gas wells.

Description: This report describes a visit to several gas well sites in the Fayetteville Shale on August 9, 2007. I met with George Sheffer, Desoto Field Manager for SEECO, Inc. (a large gas producer in Arkansas). We talked in his Conway, Arkansas, office for an hour and a half about the processes and technologies that SEECO uses. We then drove into the field to some of SEECO's properties to see first-hand what the well sites looked like. In 2006, the U.S. Department of Energy's (DOE's) National Energy Tech… more
Date: September 30, 2007
Creator: Veil, J. A. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department
open access

Soil carbon response to rising temperature

Description: No Description Available.
Date: September 7, 2012
Creator: Montz, A.; Kotamarthi, V. R. & Bellout, H.
Partner: UNT Libraries Government Documents Department
open access

A validation study of existing neutronics tools against ZPPR-21 and ZPPR-15 critical experiments.

Description: A study was performed to validate the existing tools for fast reactor neutronics analysis against previous critical experiments. The six benchmark problems for the ZPPR-21 critical experiments phases A through F specified in the Handbook of Evaluated Criticality Safety Benchmark Experiments were analyzed. Analysis was also performed for three loading configurations of the ZPPR-15 Phase A experiments. As-built core models were developed in XYZ geometries using the reactor loading records and dra… more
Date: September 30, 2007
Creator: Yang, W.S. & Kim, S.J. (Nuclear Engineering Division)
Partner: UNT Libraries Government Documents Department
open access

Generation IV Nuclear Energy System Initiative. Pin Core Subassembly Design for the Gas-Cooled Fast Reactor.

Description: This handbook demonstrates the application of a tool for measuring and monitoring the impact of a development project in the Department of Quezaltenango, Guatemala. That project itself presently is a demonstration. It explores the technical feasibility and the commercial possibilities of direct geothermal heat applications to the processing of agricultural produce - with the eventual purpose of expanding agricultural exports from Guatemala. The handbook focuses on an early stage of the geotherm… more
Date: September 15, 1986
Partner: UNT Libraries Government Documents Department
open access

Water use in the development and operation of geothermal power plants.

Description: Geothermal energy is increasingly recognized for its potential to reduce carbon emissions and U.S. dependence on foreign oil. Energy and environmental analyses are critical to developing a robust set of geothermal energy technologies. This report summarizes what is currently known about the life cycle water requirements of geothermal electric power-generating systems and the water quality of geothermal waters. It is part of a larger effort to compare the life cycle impacts of large-scale geothe… more
Date: September 17, 2010
Creator: Clark, C. E.; Harto, C. B.; Sullivan, J. L.; Wang, M. Q. (Energy Systems) & EVS), (
Partner: UNT Libraries Government Documents Department
open access

Progress report on development of intermediate fidelity full assembly analysis methods.

Description: While high fidelity modeling capabilities for various physics phenomena are being pursued under advanced modeling and simulation initiatives under the DOE Office of Nuclear Energy, they generally rely on high-performance computation facilities and are too expensive to be used for parameter-space exploration or design analysis. One-dimensional system codes have been used for a long time and have reached a degree of maturity, but limit their validity to specific applications. Thus, an intermediat… more
Date: September 30, 2011
Creator: Hu, R. & Fanning, T. H. (Nuclear Engineering Division)
Partner: UNT Libraries Government Documents Department
open access

Sistemas Eolicos Pequenos para Generacion de Electricidad; Una guia para consumidores en los EE.UU.

Description: This Spanish version of the popular Small Wind Electric Systems: A U.S. Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind reso… more
Date: September 1, 2007
Partner: UNT Libraries Government Documents Department
open access

Framework for managing wastes from oil and gas exploration and production (E&P) sites.

Description: Oil and gas companies operate in many countries around the world. Their exploration and production (E&P) operations generate many kinds of waste that must be carefully and appropriately managed. Some of these wastes are inherently part of the E&P process; examples are drilling wastes and produced water. Other wastes are generic industrial wastes that are not unique to E&P activities, such as painting wastes and scrap metal. Still other wastes are associated with the presence of work… more
Date: September 15, 2007
Creator: Veil, J. A.; Puder, M. G. & Division, Environmental Science
Partner: UNT Libraries Government Documents Department
open access

ZPR-3 Assembly 11 : A cylindrical sssembly of highly enriched uranium and depleted uranium with an average {sup 235}U enrichment of 12 atom % and a depleted uranium reflector.

Description: Over a period of 30 years, more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited for nuclear data validation and to form the basis for criticality safety benchmarks. A number of the Argonne ZPR/ZPPR crit… more
Date: September 30, 2010
Creator: Lell, R. M.; McKnight, R. D.; Tsiboulia, A.; Rozhikhin, Y.; Security, National & Engineering, Inst. of Physics and Power
Partner: UNT Libraries Government Documents Department
open access

Th/U-233 multi-recycle in PWRs.

Description: The use of thorium in current or advanced light water reactors (LWRs) has been of interest in recent years. These interests have been associated with the need to increase nuclear fuel resources and the perceived non-proliferation advantages of the utilization of thorium in the fuel cycle. Various options have been considered for the use of thorium in the LWR fuel cycle including: (1) its use in a once-through fuel cycle to replace non-fissile uranium or to extend fuel burnup due to its attracti… more
Date: September 7, 2010
Creator: Yun, D.; Kim, T. K.; Taiwo, T. A. & Division, Nuclear Engineering
Partner: UNT Libraries Government Documents Department
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