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Thermodynamic Modeling of Hanford Waste Tank 241-AN-107

Description: The high level waste storage double-shell tanks at the Hanford site are highly basic. The high basicity is a key factor in controlling the chemical behavior of different components of the waste and in influencing the corrosion rate of the carbon steel primary tanks. However, the introduction of atmospheric CO2 can act to reduce the pH of the tank wastes over time and possibly alter the corrosion rate of the carbon steel tanks. In order to at least partially address this issue for waste tank 241… more
Date: September 7, 2005
Creator: Felmy, Andrew R.
Partner: UNT Libraries Government Documents Department
open access

Increasing Safety and Reducing Environmental Damage Risk from Aging High-Level Radioactive Waste Tanks

Description: Cracks of various shapes and sizes exist in large high-level waste (HLW) tanks at several DOE sites. There is justifiable concern that these cracks could grow to become unstable causing a substantial release of liquid contaminants to the environment. Accurate prediction of crack growth behavior in the tanks, especially during accident scenarios, is not possible with existing analysis methodologies. This research project responds to this problem by developing an improved ability to predict crack… more
Date: June 1, 2005
Creator: Steffler, Eric D.; McClintock, Frank A.; Lloyd, W. Randolph; Rashid, Mark M. & Williamson, Richard L.
Partner: UNT Libraries Government Documents Department
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Physical Properties of Hanford Transuranic Waste Sludge

Description: Equipment that was purchased in the abbreviated year 1 of this project has been used during year 2 to study the fundamental behavior of materials that simulate the behavior of the Hanford transuranic waste sludge. Two significant results have been found, and each has been submitted for publication. Both studies found non-DLVO behavior in simulant systems. These separate but related studies were performed concurrently. It was previously shown in Rassat et al.'s report Physical and Liquid Chemica… more
Date: June 1, 2005
Creator: Berg, John C.
Partner: UNT Libraries Government Documents Department
open access

Characterization of Actinides in Simulated Alkaline Tank Waste Sludges and Leachates

Description: Removal of waste-limiting components of sludge (Al, Cr, S, P) in underground tanks at Hanford by treatment with concentrated alkali has proven less efficacious for Al and Cr removal than had been hoped. More aggressive treatments of sludges, for example, contact with oxidants targeting Cr(III), have been tested in a limited number of samples and found to improve leaching efficiency for Cr. Oxidative alkaline leaching can be expected to have at best a secondary influence on the mobilization of A… more
Date: June 1, 2005
Creator: Nash, Kenneth L.
Partner: UNT Libraries Government Documents Department
open access

Sandia National Laboratories, California Quality Assurance Project Plan for Environmental Monitoring Program.

Description: This Quality Assurance Project Plan (QAPP) applies to the Environmental Monitoring Program at the Sandia National Laboratories/California. This QAPP follows DOE Quality Assurance Management System Guide for Use with 10 CFR 830 Subpart A, Quality Assurance Requirements, and DOE O 414.1C, Quality Assurance (DOE G 414.1-2A June 17, 2005). The Environmental Monitoring Program is located within the Environmental Operations Department. The Environmental Operations Department is responsible for ensuri… more
Date: September 1, 2005
Creator: Holland, Robert C.
Partner: UNT Libraries Government Documents Department
open access

Final Report: RPP-WTP Semi-Integrated Pilot Plant

Description: In August 2004 the last of the SIPP task testing ended--a task that formally began with the issuance of the RPP-WTP Test Specification in June 2003. The planning for the task was a major effort in itself and culminated with the input of all stakeholders, DOE, Bechtel National, Inc., Washington Group International, in October 2003 at Hanford, WA (Appendix A). This report documents the activities carried out as a result of that planning. Campaign IV, the fourth and final step towards the Semi-Int… more
Date: June 1, 2005
Creator: Duignan, M. R.; Adamson, D. J.; Calloway, T. B.; Fowley, M. D.; Qureshi, Z. H.; Steimke, J. L. et al.
Partner: UNT Libraries Government Documents Department
open access

Fission-Product Separation Based on Room-Temperature Ionic-Liquids

Description: During the previous funding cycle for this project, we investigated the electrochemistry of Cs(I) in air and moisture-stable ionic liquids both with and without the addition of BOBCalixC6. These investigations revealed that the electrochemical windows of the dialkylimidazolium bis[(trifluoromethyl)sulfonyl]imide ionic liquids do not permit the direct electrochemical reduction of Cs(I), even when Hg electrodes are employed, because these organic cations are reduced at less negative potentials th… more
Date: June 1, 2005
Creator: Hussey, Charles L.
Partner: UNT Libraries Government Documents Department
open access

DWPF Recycle Evaporator Shielded Cells Testing

Description: Testing was performed to determine the feasibility and processing characteristics of evaporation of actual Defense Waste Processing Facility (DWPF) recycle material. Samples of the Off Gas Condensate Tank (OGCT) and Slurry Mix Evaporator Condensate Tank (SMECT) were transferred from DWPF to the Savannah River National Lab (SRNL) Shielded Cells and blended with De-Ionized (DI) water and a small amount of Slurry Mix Evaporator (SME) product. A total of 3000 mL of this feed was concentrated to app… more
Date: July 1, 2005
Creator: Fellinger, T. L.; Herman, D. T. & Stone, M.E
Partner: UNT Libraries Government Documents Department
open access

High Level Waste System Impacts from Small Column Ion Exchange Implementation

Description: The objective of this task is to identify potential waste streams that could be treated with the Small Column Ion Exchange (SCIX) and perform an initial assessment of the impact of doing so on the High-Level Waste (HLW) system. Design of the SCIX system has been performed as a backup technology for decontamination of High-Level Waste (HLW) at the Savannah River Site (SRS). The SCIX consists of three modules which can be placed in risers inside underground HLW storage tanks. The pump and filter … more
Date: August 18, 2005
Creator: McCabe, D. J.; Hamm, L. L.; Aleman, S. E.; Peeler, D. K.; Herman, C. C. & Edwards, T. B.
Partner: UNT Libraries Government Documents Department
open access

Sludge Batch 4 Simulant Flowsheet Studies with ARP and MCU: Impact of MCU Organics

Description: Two facilities for treating the salt currently being stored in the High Level Waste (HLW) tanks are currently planned to begin operations during the processing of Sludge Batch 4 (SB4). The Immobilization Technology Section (ITS) of the Savannah River National Laboratory (SRNL) was requested by the Defense Waste Processing Facility (DWPF) via Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 (Washburn, 2004) to evaluate the impacts on DWPF processing for streams from the Actinide Removal Proce… more
Date: July 1, 2005
Creator: Baich, M. A.; Herman, C. C.; Eibling, R. E.; Williams, M. F. & Smith, F. G.
Partner: UNT Libraries Government Documents Department
open access

Saltstone Clean Cap Formulation

Description: The current operation strategy for using Saltstone Vault 4 to receive 0.2 Ci/gallon salt solution waste involves pouring a clean grout layer over the radioactive grout prior to initiating pour into another cell. This will minimize the radiating surface area and reduce the dose rate at the vault and surrounding area. The Clean Cap will be used to shield about four feet of Saltstone poured into a Z-Area vault cell prior to moving to another cell. The minimum thickness of the Clean Cap layer will … more
Date: April 22, 2005
Creator: Langton, C
Partner: UNT Libraries Government Documents Department
open access

Scoping Calculations of Tank 48 Vapor Space Mixing

Description: Scoping calculations to address the mixing behavior of benzene in the vapor space of Tank 48 and estimate maximum benzene concentrations have been completed. The analysis was focused on determining whether a detailed assessment using a computational fluid dynamics (CFD) model of the Tank 48 vapor space could support Safety Class calculations. The calculations included nominal boundary conditions for air inlet and exhaust flows, as well as benzene evolution from the tank liquid surface. Addition… more
Date: October 13, 2005
Creator: Lee, S.
Partner: UNT Libraries Government Documents Department
open access

Characterization and Dessolution Test results for the January 2005 DWPF Off Gas Condensate Tank Samples (U)

Description: The Off Gas Condensate Tank (OGCT) at the Defense Waste Processing Facility (DWPF) collects the condensate from the off-gas system of the melter. The condensate stream contains entrained solids that collect in the OGCT. Water from the OGCT is re-circulated to the Steam Atomized Scrubber and quencher and may provide a mechanism for re-introducing the particulates into the off-gas system. These particulates are thought to be responsible for plugging the downstream High Efficiency Mist Eliminator … more
Date: April 8, 2005
Creator: Fellinger, T
Partner: UNT Libraries Government Documents Department
open access

Determination of Reportable Radionuclides for DWPF Sludge Batch 3 (Macrobatch 4)

Description: The Waste Acceptance Product Specifications (WAPS) 1.2 require that ''The Producer shall report the inventory of radionuclides (in Curies) that have half-lives longer than 10 years and that are, or will be, present in concentrations greater than 0.05 percent of the total inventory for each waste type indexed to the years 2015 and 3115''. As part of the strategy to meet WAPS 1.2, the Defense Waste Processing Facility (DWPF) will report for each waste type, all radionuclides (with half-lives grea… more
Date: May 1, 2005
Creator: Bannochie, C.
Partner: UNT Libraries Government Documents Department
open access

TASK TECHNICAL AND QUALITY ASSURANCE PLAN FOR THE CHARACTERIZATION AND LEACHING OF A THERMOWELL AND CONDUCTIVITY PROBE PIPE SAMPLE FROM TANK 48H

Description: A key component for the accelerated implementation and operation of the Salt Waste Processing Facility (SWPF) is the recovery of Tank 48H. Tank 48H is a type IIIA tank with a maximum capacity of 1.3 million gallons. The material on the Tank 48H internal tank surfaces is estimated to have a total volume of approximately 115 gallons consisting of mostly water soluble solids with approximately 20 wt% insoluble solids (33 Kg TPB). This film is assumed to be readily removable. The material on the in… more
Date: November 2, 2005
Creator: Fondeur, F
Partner: UNT Libraries Government Documents Department
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Physical, Chemical and Structural Evolution of Zeolite - Containing Waste Forms Produced from Metakaolinite and Calcined HLW

Description: During the seventh year of the current grant (DE-FG02-05ER63966) we completed an exhaustive study of cold calcination and began work on the development of tank fill materials to fill empty tanks and control residuals. Cold calcination of low and high NOx low activity waste (LAW) SRS Tank 44 and Hanford AN-107 simulants, respectively with metallic Al + Si powders was evaluated. It was found that a combination of Al and Si powders could be used as reducing agents to reduce the nitrate and nitrite… more
Date: June 1, 2005
Creator: Grutzeck, Michael
Partner: UNT Libraries Government Documents Department
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Validation of Air-Backed Underwater Explosion Experiments with ALE3D

Description: This paper summarizes an exercise carried out to validate the process of implementing LLNL's ALE3D to predict the permanent deformation and rupture of an air-backed steel plate subjected to underwater shock. Experiments were performed in a shock tank at the Naval Science and Technology Laboratory in Visakhapatnam India, and the results are documented in reference. A consistent set of air-backed plates is subjected to shocks from increasing weights of explosives ranging from 10g-80g. At 40g and … more
Date: February 4, 2005
Creator: Leininger, L D
Partner: UNT Libraries Government Documents Department
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Technical Information on the Carbonation of the EBR-II Reactor, Summary Report Part 1: Laboratory Experiments and Application to EBR-II Secondary Sodium System

Description: Residual sodium is defined as sodium metal that remains behind in pipes, vessels, and tanks after the bulk sodium metal has been melted and drained from such components. The residual sodium has the same chemical properties as bulk sodium, and differs from bulk sodium only in the thickness of the sodium deposit. Typically, sodium is considered residual when the thickness of the deposit is less than 5-6 cm. This residual sodium must be removed or deactivated when a pipe, vessel, system, or entire… more
Date: April 1, 2005
Creator: Sherman, Steven R.
Partner: UNT Libraries Government Documents Department
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Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation of Sodium Salts

Description: The purpose of this research involving collaboration between Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL) is to explore new approaches to the separation of sodium hydroxide, sodium nitrate, and other sodium salts from high-level alkaline tank waste. The principal potential benefit is a major reduction in disposed waste volume, obviating the building of expensive new waste tanks and reducing the costs of low-activity waste immobilization. Principles of io… more
Date: June 1, 2005
Creator: Levitskaia, Tatiana G.; Lumetta, Gregg J.; Moyer, Bruce A. & Bonnesen, Peter V.
Partner: UNT Libraries Government Documents Department
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Technetium Chemistry in HLW

Description: Tc contamination is found within the DOE complex at those sites whose mission involved extraction of plutonium from irradiated uranium fuel or isotopic enrichment of uranium. At the Hanford Site, chemical separations and extraction processes generated large amounts of high level and transuranic wastes that are currently stored in underground tanks. The waste from these extraction processes is currently stored in underground High Level Waste (HLW) tanks. However, the chemistry of the HLW in any … more
Date: June 6, 2005
Creator: Hess, Nancy J.; Felmy, Andrew R.; Rosso, Kevin M. & Yuanxian, Xia
Partner: UNT Libraries Government Documents Department
open access

Electron Cross-field Transport in a Miniaturized Cylindrical Hall Thruster

Description: Conventional annular Hall thrusters become inefficient when scaled to low power. Cylindrical Hall thrusters, which have lower surface-to-volume ratio, are more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. The present paper gives a review of the experimental and numerical investigations of electron crossfield transport in the 2.6 cm miniaturized cylindrical Hall thruster (100 W power level). We show that, in order to explain … more
Date: October 14, 2005
Creator: Smirnov Artem, Raitses Yevgeny, Fisch Nathaniel J
Partner: UNT Libraries Government Documents Department
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Next Generation Extractants for Cesium Separation from High-Level Waste: From Fundamental Concepts to Site Implementation

Description: This project unites expertise at Oak Ridge National Laboratory (ORNL) and Texas Tech University (TTU, Prof. Richard A. Bartsch) to answer fundamental questions addressing the problem of cesium removal from high-level tank waste. Efforts focus on novel solvent-extraction systems containing calixcrown extractants designed for enhanced cesium binding and release. Exciting results are being obtained in three areas: (1) a new lipophilic cesium extractant with a high solubility in the solvent; (2) ne… more
Date: July 6, 2005
Creator: Moyer, Bruce A.; Bazelaire, Eve; Bonnesen, Peter V.; Custelcean, Radu; Delmau, Laetitia H.; Ditto, Mary E. et al.
Partner: UNT Libraries Government Documents Department
open access

Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation of Sodium Salts

Description: The purpose of this research involving collaboration between Oak Ridge National Laboratory (ORNL) and Pacific Northwest National Laboratory (PNNL) is to explore new approaches to the separation of sodium hydroxide, sodium nitrate, and other sodium salts from high-level alkaline tank waste. The principal potential benefit is a major reduction in disposed waste volume, obviating the building of expensive new waste tanks and reducing the costs of vitrification. Principles of ion recognition are be… more
Date: September 26, 2005
Creator: Moyer, Bruce A.; Bonnesen, Peter V.; Custelcean, Radu; Delmau, Laetitia H.; Engle, Nancy L.; Kang, Hyun-Ah et al.
Partner: UNT Libraries Government Documents Department
open access

Precipitation and Deposition of Aluminum-Containing Phases in Tank Wastes

Description: In the first phase of our study, we focused on the use of simple organics to raise the solubility of aluminum oxyhydroxides in high alkaline aqueous solvents. In a limited survey of common organic acids, we determined that citric acid had the highest potential to achieve our goal. However, our subsequent investigation revealed that the citric acid appeared to play two roles in the solutions: first, raising the concentration of aluminum in highly alkaline solutions by breaking up or inhibiting '… more
Date: December 1, 2005
Creator: Dabbs, Daniel M. & Aksay, I. A.
Partner: UNT Libraries Government Documents Department
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