WorldCat Identities

United States Department of Energy Savannah River Site

Works: 8,471 works in 9,578 publications in 1 language and 31,413 library holdings
Genres: Periodicals  Conference proceedings 
Roles: Researcher
Classifications: TD195.N83, 333.75
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Most widely held works by United States
Biodiversity and coarse woody debris in southern forests proceedings of the Workshop on Coarse Woody Debris in Southern Forests: Effects on Biodiversity, Athens, GA, October 18-20, 1993 by Workshop on Coarse Woody Debris in Southern Forests: Effects on Biodiversity ( )
2 editions published in 1996 in English and held by 198 WorldCat member libraries worldwide
Savannah River Site environmental report for ( )
in English and held by 145 WorldCat member libraries worldwide
Production of short-rotation woody crops grown with a range of nutrient and water availability : establishment report and first-year responses ( Book )
1 edition published in 2004 in English and held by 51 WorldCat member libraries worldwide
Modeling the corrosion of high-level waste containers CAM-CRM interface ( )
9 editions published in 1998 in English and held by 30 WorldCat member libraries worldwide
This paper describes the off-gas analysis of samples collected during the radioactive vitrification experiments. Production and characterization of the Hanford waste-containing LAW and HAW glasses are presented in related reports from this conference
Shrapnel impact probability and diagnostic port failure analysis for LLNL's explosives testing contained firing facility (CFF) ( )
5 editions published in 1998 in English and held by 20 WorldCat member libraries worldwide
The text of the paper will include an overview of the methodology used to determine the credible scenarios, summary of the analysis of the results, challenges overcome during compliance and implementation, and cost savings due to reduced operational expanses
Integrated demonstration of molten salt oxidation with salt recycle for mixed waste treatment ( )
5 editions published between 1997 and 1998 in English and held by 20 WorldCat member libraries worldwide
The Savannah River Site (SRS), a 803 km² U.S. Department of Energy (DOE) facility in south-western South Carolina, incorporates pollution prevention as a fundamental component of its Environmental Management System. A comprehensive pollution prevention program was implemented as part of an overall business strategy to reduce waste generation and pollution releases, minimize environmental impacts, and to reduce future waste management and pollution control costs. In fiscal years 1995 through 1997, the Site focused on implementing specific waste reduction initiatives identified while benchmarking industry best practices. These efforts resulted in greater than $25 million in documented cost avoidance. While these results have been dramatic to date, the Site is further challenged to maximize resource utilization and deploy new technologies and practices to achieve further waste reductions. The Site has elected to target a site-wide reduction of contaminated work spaces in fiscal year 1998 as the primary source reduction initiative. Over 120,900 m² of radiologically contaminated work areas (approximately 600 separate inside areas) exist at SRS. Reduction of these areas reduces future waste generation, minimizes worker exposure, and reduces surveillance and maintenance costs. This is a major focus of the Site's As Low As Reasonably Achievable (ALARA) program by reducing sources of worker exposure. The basis for this approach was demonstrated during 1997 as part of a successful Enhanced Work Planning pilot conducted at several specific contamination areas at SRS. An economic-based prioritization process was utilized to develop a model for prioritizing areas to reclaim. In the H-Canyon Separation facility, over 3,900 m² of potentially contaminated area was rolled back to a Radiation Buffer Area. The facility estimated nearly 420 m³ of low level radioactive waste will be avoided each year, and overall cost savings and productivity gains will reach approximately $1 million annually as a result of this effort. During fiscal year 1998, SRS will intensify the reclamation of contaminated work areas through implementation of the Site Rollback Plan. The economic based model was utilized to prioritize areas for reclamation based on achieving a return on investment of over 2:1. Generators have been challenged to exceed planned rollbacks through a DOE imposed Performance Based Incentive with the Site Operator. In the first quarter, over 1,580 m² of contaminated areas have been reclaimed with approximately 7,720 m² remaining to be done before the end of the fiscal year
Waste Vitrification Projects Throughout the US Initiated by SRS ( )
6 editions published in 1998 in English and held by 18 WorldCat member libraries worldwide
Technologies are being developed by the U.S. Department of Energy's (DOE) Nuclear Facility sites to convert high-level, low-level, and mixed wastes to a solid stabilized waste form for permanent disposal. Vitrification is one of the most important and environmentally safest technologies being developed. The Environmental Protection Agency (EPA) has declared vitrification the best demonstrated available technology for high-level radioactive waste and produced a Handbook of Vitrification Technologies for Treatment of Hazardous and Radioactive Waste. The Defense Waste Processing Facility being tested at will soon start vitrifying the high-level waste at. The DOE Office of Technology Development has taken the position that mixed waste needs to be stabilized to the highest level reasonably possible to ensure that the resulting waste forms will meet both current and future regulatory specifications. Vitrification produces durable waste forms at volume reductions up to 97%. Large reductions in volume minimize long-term storage costs making vitrification cost effective on a life cycle basis
Kinetics of and atmospheric effects on gallium removal from a CeO₂ based mixed oxide surrogate ( )
4 editions published in 1998 in English and held by 14 WorldCat member libraries worldwide
Isotopes of americium (Am) and curium (Cm) were produced in the past at the Savannah River Site (SRS) for research, medical, and radiological applications. These highly radioactive and valuable isotopes have been stored in an SRS reprocessing facility for a number of years. Vitrification of this solution will allow the material to be more safely stored until it is transported to the DOE Oak Ridge Reservation for use in research and medical applications. To this end, the Am/Cm Melter 2A pilot system, a full-scale non- radioactive pilot plant of the system to be installed at the reprocessing facility, was designed, constructed and tested. The full- scale pilot system has a frit and aqueous feed delivery system, a dual zone bushing melter, and an off-gas treatment system. The main items which were tested included the dual zone bushing melter, the drain tube with dual heating and cooling zones, glass compositions, and the off-gas system which used for the first time a film cooler/lower melter plenum. Most of the process and equipment were proven to function properly, but several problems were found which will need further work. A system description and a discussion of test results will be given
Savannah River Technology Center monthly report ( )
3 editions published in 1993 in English and held by 12 WorldCat member libraries worldwide
This is a monthly report published by Westinghouse Savannah River Company. Topics discussed in this progress report are: Terrazzo reservoir, Replacement Tritium Facility Final Safety Analysis Report, tritium processing and disposal, separation processes, environmental effects and future impacts, laboratory performance evaluation, groundwater characterization, mixed waste management facility, Raman Spectroscopy, waste processing, Defense Waste Processing Facility, mercury recycling, off-gas components testing, incineration facility blowdown solidification, and weld residual stress minimization study
Savannah River Technology Center. Monthly report ( )
3 editions published in 1994 in English and held by 12 WorldCat member libraries worldwide
This document contains information about the research programs being conducted at the Savannah River Plant. Topics of discussion include: thermal cycling absorption process, development of new alloys, ion exchange, oxalate precipitation, calcination, environmental research, remedial action, ecological risk assessments, chemical analysis of salt cakes, natural phenomena hazards assessment, and sampling of soils and groundwater
Numerical Weather Forecasting at the Savannah River Site ( )
3 editions published in 1998 in English and held by 12 WorldCat member libraries worldwide
Weather forecasts at the Savannah River Site (SRS) are important for applications to emergency response. The fate of accidentally-released radiological materials and toxic chemicals can be determined by providing wind and turbulence input to atmospheric transport models. This operation has been routinely performed at SRS using the WIND System, a system of computer models and monitors which collect data from towers situated throughout the SRS. However, the information provided to these models is spatially homogeneous (in one or two dimensions) with an elementary forecasting capability. This paper discusses the use of an advanced three-dimensional prognostic numerical model to provide space and time-dependent meteorological data for use in the WIND System dispersion models. The extensive meteorological data collection at SRS serves as a ground truth for further model development as well as for use in other applications
Measurement of high energy neutrons via Lu(n, xn) reactions ( )
3 editions published in 1997 in English and held by 12 WorldCat member libraries worldwide
While the use of platinum and platinum alloys for melting glass has a history dating back hundreds of years, its use for vitrification of radioactive materials has developed only within the last few years. Platinum-rhodium alloy has recently been utilized for both the containment and heating of small quantities of actinide materials during the vitrification process. Small, platinum alloy, melter systems are planned for use at the Savannah River Site (SRS) to vitrify residual actinide materials. The primary example is the SRS program to vitrify the contents of F-canyon Tank 17.1. This tank contains the majority of americium (Am) and curium (Cm) in the DOE complex. Other actinides by be verified in the future and include uranium (U) and plutonium (Pu)
Time domain reflectometry (TDR) instrumentation used for in-situ plasma vitrification ( )
3 editions published in 1997 in English and held by 12 WorldCat member libraries worldwide
The Savannah River Site (SRS) has a 40-plus year history of producing and processing tritium primarily for use in nuclear weapons. This gas is stored at high pressures in reservoirs that are manufactured and sealed through the use of special resistance welding processes. There is an interest in maintaining the quality and consistency of these welds to avoid leaks in the reservoirs. The reasons for this are the limited supply and high cost of producing tritium, the necessity of assuring nuclear safety and to promote weapon system reliability. Precisely machined 304-L and 316 stainless steel components are the materials used in the fabrication of the reservoir. This presentation will include a survey of sensors for use in resistance welding processes. The results of the application of the analog laser position sensor will be presented along with data indicating how the displacement parameter defines the weld process. Opportunities to close the control loop by taking sensor data into the weld controller will be discussed
Corrosion Evaluation of Aluminum Alloys in Deionized Water ( )
2 editions published between 2004 and 2005 in English and held by 10 WorldCat member libraries worldwide
Spent nuclear fuels from foreign and domestic research and test reactors being returned to SRS are now stored with other nuclear materials in the L-basin at the Savannah River Site (SRS). Recent efforts have consolidated the fuel storage systems and L-basin has become the SRS site for water storage of spent nuclear fuels. Corrosion surveillance of coupons in this basin is being performed to provide assurance of safe storage of spent fuel. This paper describes the highlights of recent studies on these aluminum coupons after immersion for more than 7 years in L-basin. Selected coupons were metallurgically characterized to establish the existence of general corrosion and pitting. Pitting was observed on galvanically coupled samples and also on intentionally creviced coupons, thus demonstrating that localized concentration cells were formed during the exposure period. In these cases, the susceptibility to pitting was not attributed to aggressive basin water chemistry but to local condition s (crevices and galvanic coupling) that allowed the development of oxygen and/or metal ion concentration cells that produced locally aggressive waters. General corrosion was also observed on some of the coupons that had not been treated to enhance the protective oxide prior to exposure in the basin water. These observations demonstrate that, even when the basin water chemistry is rigorously controlled, localized aggressive conditions can develop. Although this demonstration does not suggest significant deterioration of the stored spent nuclear fuels, it does illustrate the potential for corrosion induced degradation and thus the importance of a routine surveillance program
2 editions published between 1995 and 2005 in English and held by 9 WorldCat member libraries worldwide
STREAM is an emergency response code that predicts downstream pollutant concentrations for releases from the SRS area to the Savannah River. The STREAM code uses an algebraic equation to approximate the solution of the one dimensional advective transport differential equation. This approach generates spurious oscillations in the concentration profile when modeling long duration releases. To improve the capability of the STREAM code to model long-term releases, its calculation module was replaced by the WASP5 code. WASP5 is a US EPA water quality analysis program that simulates one-dimensional pollutant transport through surface water. Test cases were performed to compare the revised version of STREAM with the existing version. For continuous releases, results predicted by the revised STREAM code agree with physical expectations. The WASP5 code was benchmarked with the US EPA 1990 and 1991 dye tracer studies, in which the transport of the dye was measured from its release at the New Savannah Bluff Lock and Dam downstream to Savannah. The peak concentrations predicted by the WASP5 agreed with the measurements within {+-}20.0%. The transport times of the dye concentration peak predicted by the WASP5 agreed with the measurements within {+-}3.6%. These benchmarking results demonstrate that STREAM should be capable of accurately modeling releases from SRS outfalls
Characterization of Radionuclides in Purex Waste Sludges from F-Area High Level Waste Tanks ( )
3 editions published in 2003 in English and held by 9 WorldCat member libraries worldwide
This document will develop a radionuclide distribution for the sludge fraction of sludge-contaminated waste stored in the F-Area Tank Farm in accordance with the methodology outlined in WSRC IS SRS Waste Acceptance Criteria Manual, Procedure 2.02, Revision 7. This document also describes the methodology for application of radionuclide distributions representative of the sludge and supernate fractions of sludge-contaminated waste to individual waste packages
2 editions published between 2006 and 2007 in English and held by 9 WorldCat member libraries worldwide
Fluidized Bed Steam Reforming (FBSR) is being considered as a potential technology for the immobilization of a wide variety of high sodium low activity wastes (LAW) such as those existing at the Hanford site, at the Idaho National Laboratory (INL), and the Savannah River Site (SRS). The addition of clay, charcoal, and a catalyst as co-reactants with the waste denitrates the aqueous wastes and forms a granular mineral waste form that can subsequently be made into a monolith for disposal if necessary. The waste form produced is a multiphase mineral assemblage of Na-Al-Si (NAS) feldspathoid minerals with cage and ring structures and iron bearing spinel minerals. The mineralization occurs at moderate temperatures between 650-750 C in the presence of superheated steam. The cage and ring structured feldspathoid minerals atomically bond radionuclides like Tc-99 and Cs-137 and anions such as SO{sub 4}, I, F, and Cl. The spinel minerals stabilize Resource Conservation and Recovery Act (RCRA) hazardous species such as Cr and Ni. Granular mineral waste forms were made from (1) a basic Hanford Envelope A low activity waste (LAW) simulant and (2) an acidic INL simulant commonly referred to as sodium bearing waste (SBW) in pilot scale facilities at the Science Applications International Corporation (SAIC) Science and Technology Applications Research (STAR) facility in Idaho Falls, ID. The FBSR waste forms were characterized and the durability tested via ASTM C1285 (Product Consistency Test), the Environmental Protection Agency (EPA) Toxic Characteristic Leaching Procedure (TCLP), and the Single Pass Flow Through (SPFT) test. The results of the SPFT testing and the activation energies for dissolution are discussed in this study
2 editions published between 2006 and 2007 in English and held by 9 WorldCat member libraries worldwide
Over the past three decades, much progress has been made in the remediation of chlorinated solvents from the subsurface. Yet these pervasive contaminants continue to present a significant challenge to the U.S. Department of Energy (DOE), other federal agencies, and other public and private organizations. The physical and chemical properties of chlorinated solvents make it difficult to rapidly reach the low concentrations typically set as regulatory limits. These technical challenges often result in high costs and long remediation time frames. In 2003, the DOE through the Office of Environmental Management funded a science-based technical project that uses the U.S. Environmental Protection Agency's technical protocol (EPA, 1998) and directives (EPA, 1999) on Monitored Natural Attenuation (MNA) as the foundation on which to introduce supporting concepts and new scientific developments that will support remediation of chlorinated solvents based on natural attenuation processes. This project supports the direction in which many site owners want to move to complete the remediation of their site(s), that being to complete the active treatment portion of the remedial effort and transition into MNA. The overarching objective of the effort was to examine environmental remedies that are based on natural processes--remedies such as Monitored Natural Attenuation (MNA) or Enhanced Attenuation (EA). The research program did identify several specific opportunities for advances based on: (1) mass balance as the central framework for attenuation based remedies, (2) scientific advancements and achievements during the past ten years, (3) regulatory and policy development and real-world experience using MNA, and (4) exploration of various ideas for integrating attenuation remedies into a systematic set of ''combined remedies'' for contaminated sites. These opportunities are summarized herein and are addressed in more detail in referenced project documents and journal articles, as well as in the technical and regulatory documents being developed within the ITRC. Three topic areas were identified for development during this project. These areas are: mass balance, Enhanced Attenuation (EA), and new characterization and monitoring tools and approaches to support MNA and EA. Each of these topics is documented in stand alone reports, WSRC-STI-2006-00082, WSRC-STI-2006-00083, and WSRC-STI-2006-00084, respectively. In brief, the mass balance efforts are examining methods and tools to allow a site to be evaluated in terms of a system where the inputs and processes within the system are compared to the outputs from the system, as well as understanding what attenuation processes may be occurring and how likely they are to occur within a system. Enhanced Attenuation is a new concept that is a transition step between primary treatments and MNA, when the natural attenuation processes are not sufficient to allow direct transition from the primary treatment to MNA. EA technologies are designed to either boost the level of the natural attenuation processes or decrease the loading of contaminants to the system for a period of time sufficient to allow the remedial goals to be met over the long-term. For characterization and monitoring, a phased approach based on documenting the site specific mass balance was developed. Tools and techniques to support the approach included direct measures of the biological processes and various tools to support cost-effective long-term monitoring of systems where the natural attenuation processes are the main treatment remedies. The effort revealed opportunities for integrating attenuation mechanisms into a systematic set of ''combined remedies'' for contaminated sites
Analysis of soil and water at the Four Mile Creek seepline near the F- and H-Areas of SRS ( )
4 editions published between 1990 and 2000 in English and held by 9 WorldCat member libraries worldwide
Until 1988, solutions containing sodium hydroxide, nitride acid, low levels of radionuclides (mostly tritiated water) and some metals were discharged to unlined seepage basins at the F and H Areas of the Savannah River Site (SRS) as part of normal operations (Killian et al, 1987a,b). The basins are now being closed according to the Resource Conservation and Recovery Act (RCRA). As part of the closure, a Part B Post-Closure Care Permit is being prepared. The information included in this report will fulfill some of the data requirements for that Part B permit. Several soil and water samples were collected along the Four Mile Creek (FMC) seepline at the F & H Areas of the Savannah River Site. The samples were analyzed for concentrations of metals, radionuclides, and inorganic constituents. The goal of the work reported herein is to document the impacts from the basins of FMC has been completed in a phased approach
Superconducting thermoelectric generator ( )
3 editions published between 1992 and 1996 in English and held by 9 WorldCat member libraries worldwide
This invention is comprised of an apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a higher thermal conductivity than that of the superconducting material. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials, establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device
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controlled identity United States. Department of Energy

United States. Dept. of Energy. Savannah River Site
English (78)