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in subjects: "High-Level Radioactive Wastes"  
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CRYSTALLIZATION IN HIGH-LEVEL WASTE GLASSES U.S. DEPARTMENT OF ENERGY OFFICE OF RIVER PROTECTION WTP ENGINEERING DIVISION

Description: Various circumstances influence crystallization in glassmaking, for example: (1) crystals nucleate and grow before the glass-forming melt occurs; (2) crystals grow or dissolve in flowing melt and during changing temperature; (3) crystals move under the influence of gravity; (4) crystals agglomerate and interact with gas bubbles; (5) high-level wastes (HLW) are mixtures of a large number of components in unusual proportions; (6) melter processing of HLW and the slow cooling of HLW glass in canis… more
Date: August 19, 2009
Creator: AA, KRUGER & PR, HRMA
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Alternative HEPA Filter Full-Scale Single Element Testing

Description: Conventional disposable glass-fiber high efficiency particulate air (HEPA) filters are used throughout the Department of Energy complex in various process systems. Alternative filter media is being addressed that would have a long life on the HLW tanks.
Date: January 15, 2003
Creator: Adamson, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Testing and modeling of seepage into underground openings in aheterogeneous fracture system at Yucca Mountain, Nevada

Description: We discuss field activities designed to characterize seepage into an underground opening at the potential site for geologic storage of high-level radioactive waste (HLRW) at Yucca Mountain, Nevada, and the use of these data for development and calibration of a model for predicting seepage into planned HLRW emplacement drifts. Air-injection tests were conducted to characterize the permeability of the fractured rock, and liquid-release tests (LRTs) were conducted and seepage monitored to characte… more
Date: March 25, 2002
Creator: Ahlers, C. F.; Trautz, R. C.; Cook, P. J. & Finsterle, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tanks Focus Area Site Needs Assessment FY 2000

Description: This document summarizes the Tanks Focus Area (TFA's) process of collecting, analyzing, and responding to high-level radioactive tank waste science and technology needs developed from across the DOE complex in FY 2000. The document also summarizes each science and technology need, and provides an initial prioritization of TFA's projected work scope for FY 2001 and FY 2002.
Date: March 10, 2000
Creator: Allen, Robert W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Complexants for actinide element coordination and immobilization

Description: The goal of this project is to develop inorganic metal oxide clusters known as polyoxoanions (POAs) as complexants for the immobilization of actinide (An) ions from high-level waste (HLW). A diverse array of rugged isopolyoxoanions, [M{sub x}O{sub y}]{sup z{minus}}, and heteropolyoxoanions, [X{sub a}M{sub b}O{sub c}]{sup d{minus}}, comprised of M = V, Mo, W and X = Si, P polyhedra will be investigated for their ability to incarcerate An ions. The research combines two objectives--An-POA coordin… more
Date: March 14, 2000
Creator: Antonio, M.R.; Soderholm, L.; Williams, C.W. & Francesconi, L.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Operational envelope for studies using magnetite to remove strontium and actinides from SRS tank waste.

Description: This work discusses the operational envelope developed for tests involving in-situ formed magnetite to remove strontium (Sr) and actinide from Savannah River Site (SRS) waste solution. These tests will be performed at Argonne National Laboratory (ANL) in support of the SRS effort for HLW treatment. The operational envelope was developed in consultations with key personnel at SRS. Four elements of the operational envelope were identified: (1) waste simulant composition, (2) radionuclide concentr… more
Date: August 26, 2002
Creator: Arafat, H. A.; Gelis, A. V. & Vandegrift, G. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TRANSPORTATION CASK RECEIPT AND RETURN FACILITY WORKER DOSE ASSESSMENT

Description: The purpose of this design calculation is to estimate radiation doses received by personnel working in the Transportation Cask Receipt and Return Facility (TCRRF) of the repository including the personnel at the security gate and cask staging areas. This calculation is required to support the preclosure safety analysis (PCSA) to ensure that the predicted doses are within the regulatory limits prescribed by the U.S. Nuclear Regulatory Commission (NRC). The Cask Receipt and Return Facility receiv… more
Date: February 24, 2005
Creator: Arakali, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spatial analysis of hypocenter to fault relationships for determining fault process zone width in Japan.

Description: Preliminary investigation areas (PIA) for a potential repository of high-level radioactive waste must be evaluated by NUMO with regard to a number of qualifying factors. One of these factors is related to earthquakes and fault activity. This study develops a spatial statistical assessment method that can be applied to the active faults in Japan to perform such screening evaluations. This analysis uses the distribution of seismicity near faults to define the width of the associated process zone.… more
Date: September 1, 2004
Creator: Arnold, Bill Walter; Roberts, Barry L.; McKenna, Sean Andrew & Coburn, Timothy C. (Abilene Christian University, Abilene, TX)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Processing of High Level Waste: Spectroscopic Characterization of Redox Reactions in Supercritical Water - Final Report

Description: Current efforts are focused on the oxidative dissolution of chromium compounds found in Hanford tank waste sludge. Samples of chromium oxides and hydroxides with varying degrees of hydration are being characterized using Raman, FTIR, and XPS spectroscopic techniques. Kinetics of oxidation reactions at subcritical and supercritical temperatures are being followed by Raman spectroscopy using a high temperature stainless steel cell with diamond windows. In these reactions both hydrogen peroxide an… more
Date: November 15, 2000
Creator: Arrington, C. A., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparing to Submit a License Application for Yucca Mountain

Description: In 1982, the U.S. Congress passed the Nuclear Waste Policy Act, a Federal law that established U.S. policy for the permanent disposal of spent nuclear fuel and high-level radioactive waste. Congress amended the Act in 1987, directing the Department of Energy to study only Yucca Mountain, Nevada as the site for a permanent geologic repository. As the law mandated, the Department evaluated Yucca Mountain to determine its suitability as the site for a permanent geologic repository. Decades of scie… more
Date: March 14, 2005
Creator: Arthur, W.J. & Voegele, M.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Speciation, Dissolution, and Redox Reactions of Chromium Relevant to Pretreatment and Separation of High-Level Tank Wastes

Description: Chromium, one of the problematic elements in tank sludges, is considered the most important constituent in defining the total volume of high-level radioactive waste (HLW) glass. Current sludge washing processes (e.g. caustic leaching, 3 M NaOH) are not effective in removing Cr. This inefficient removal would result in production of an unacceptably large volume of HLW glass and thus a tremendous increase in the cost of waste disposal. This proposed research seeks to develop fundamental data for … more
Date: April 20, 2005
Creator: B., Clark Sue; Rai, Dhanpat & Rao, Linfeng
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Ammonium Molybdophosphate (AMP) on Strontium, Actinides, and RCRA Metals in SRS Simulated Waste

Description: High Level Waste samples contain elevated concentrations of radioactive cesium requiring marked dilution of the waste to facilitate handling in non-shielded facilities. The authors developed a sample treatment protocol, using ammonium molybdophosphate (AMP) to remove sufficient cesium to allow handling of the samples with minimal dilution. The sample treatment protocol includes the following steps: pH adjust the sample to the range of 0.01 to 1.0 M acidity; mix 30 mL of acidified sample with 40… more
Date: April 30, 2004
Creator: BARNES, MARKJ
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ACCELERATOR TRANSMUTATION OF WASTE TECHNOLOGY AND IMPLEMENTATION SCENARIOS

Description: During 1999, the U.S. Department of Energy, in conjunction with its nuclear laboratories, a national steering committee, and a panel of world experts, developed a roadmap for research, development, demonstration, and deployment of Accelerator-driven Transmutation of Waste (ATW). The ATW concept that was examined in this roadmap study was based on that developed at the Los Alamos National Laboratory (LANL) during the 1990s. The reference deployment scenario in the Roadmap was developed to treat … more
Date: November 1, 2000
Creator: BELLER, D. & TUYLE, G. VAN
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Level Waste Tank Closure Modeling with Geographic Information Systems (GIS)

Description: Waste removal from 49 underground storage tanks located in two tank farms involves three steps: bulk waste removal, water washing to remove residual waste, and in some cases chemical cleaning to remove additional residual waste. Not all waste can be completely removed by these processes-resulting in some residual waste loading following cleaning. Completely removing this residual waste would be prohibitively expensive; therefore, it will be stabilized by filling the tanks with grout. Acceptable… more
Date: July 29, 2004
Creator: BOLLINGER, JAMES
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Level Waste FLYGT Mixer, A Case History for Modal Analysis

Description: There are many tools available to help diagnose equipment vibration problems around the Savannah River Site. With the advancement of technology surrounding vibration analysis, modal analysis, an old, proven engineering modeling technique, can now be performed using the multi-channel machinery analyzer found in most predictive maintenance programs. The use of modal analysis can help eliminate problems with plant equipment that include failure to maintain tolerances, noisy equipment operation, ma… more
Date: April 10, 2001
Creator: Badger, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technical Review of Retrieval and Closure Plans for the INEEL INTEC Tank Farm Facility

Description: The purpose of this report is to document the conclusions of a technical review of retrieval and closure plans for the Idaho National Energy and Environmental Laboratory (INEEL) Idaho Nuclear Technology and Engineering Center (INTEC) Tank Farm Facility. In addition to reviewing retrieval and closure plans for these tanks, the review process served as an information exchange mechanism so that staff in the INEEL High Level Waste (HLW) Program could become more familiar with retrieval and closure … more
Date: September 28, 2001
Creator: Bamberger, Judith A.; Burks, Barry L.; Quigley, Keith D. & Falter, Diedre D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MEASUREMENT AND CALCULATION OF RADIONUCLIDE ACTIVITIES IN SAVANNAH RIVER SITE HIGH LEVEL WASTE SLUDGE FOR ACCEPTANCE OF DEFENSE WASTE PROCESSING FACILITY GLASS IN A FEDERAL REPOSITORY

Description: This paper describes the results of the analyses of High Level Waste (HLW) sludge slurry samples and of the calculations necessary to decay the radionuclides to meet the reporting requirement in the Waste Acceptance Product Specifications (WAPS) [1]. The concentrations of 45 radionuclides were measured. The results of these analyses provide input for radioactive decay calculations used to project the radionuclide inventory at the specified index years, 2015 and 3115. This information is necessa… more
Date: December 31, 2008
Creator: Bannochie, C; David Diprete, D & Ned Bibler, N
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Studies Related to Chemical Mechanisms of Gas Formation in Hanford High-Level Nuclear Wastes

Description: The objective of this work is to develop a more detailed mechanistic understanding of the thermal reactions that lead to gas production in certain high-level waste storage tanks at the Hanford, Washington site. Prediction of the combustion hazard for these wastes and engineering parameters for waste processing depend upon both a knowledge of the composition of stored wastes and the changes that they undergo as a result of thermal and radiolytic decomposition. Since 1980 when Delagard first demo… more
Date: April 8, 2002
Creator: Barefield, E. Kent; Liotta, Charles L. & Neumann, Henry M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strontium and Actinides Removal from Savannah River Site Actual Waste Samples by Freshly Precipitated Manganese Oxide

Description: The authors investigated the performance of freshly precipitated manganese oxide and monosodium titanate (MST) for the removal of strontium (Sr) and actinides from actual high-level waste. Manganese oxide precipitation occurs upon addition of a reductant such as formate (HCO2-) or peroxide (H2O2) to a waste solution containing permanganate (MnO4-). Tests described in this document address the capability of manganese oxide treatment to remove Rs, Pu, and Np from actual high-level waste containin… more
Date: October 30, 2003
Creator: Barnes, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strontium and Actinides Removal from Savannah River Site Actual Waste Samples by Freshly Precipitated Manganese Oxide

Description: The authors investigated the performance of freshly precipitated manganese oxide and monosodium titanate (MST) for the removal of strontium (Sr) and actinides from actual high-level waste. Manganese oxide precipitation occurs upon addition of a reductant such as formate (HCO2-) or peroxide (H2O2) to a waste solution containing permanganate (MnO4-). An addition of non-radioactive strontium typically precedes the MnO4- and reductant addition, which serves primarily to isotopically dilute the stro… more
Date: October 18, 2002
Creator: Barnes, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeling corrosion and constituent release from a metal waste form.

Description: Several ANL ongoing experimental programs have measured metal waste form (MWF) corrosion and constituent release. Analysis of this data has initiated development of a consistent and quantitative phenomenology of uniform aqueous MWF corrosion. The effort so far has produced a preliminary fission product and actinide release model based on measured corrosion rates and calibrated by immersion test data for a 90 C J-13 and concentrated J-13 solution environment over 1-2 year exposure times. Ongoing… more
Date: December 4, 2000
Creator: Bauer, T. H.; Fink, J. K.; Abraham, D. P.; Johnson, I.; Johnson, S. G. & Wigeland, R. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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AGING SYSTEM DESIGN DEVELOPMENT STRATEGY

Description: This plan provides an overview, work to date, and the path forward for the design development strategy of the Aging cask for aging commercial spent nuclear fuel (CSNF) at the Yucca Mountain Project (YMP) repository site. Waste for subsurface emplacement at the repository includes US Department of Energy (DOE) high-level radioactive waste (HLW), DOE SNF, commercial fuel in dual-purpose canisters (DPCs), uncanistered bare fuel, naval fuel, and other waste types. Table 1-1 lists the types of radio… more
Date: February 7, 2005
Creator: Beesley, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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