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HIGH ALUMINUM HLW (HIGH LEVEL WASTE ) GLASSES FOR HANFORDS WTP (WASTE TREATMENT PROJECT)
This paper presents the results of glass formulation development and melter testing to identify high waste loading glasses to treat high-Al high level waste (HLW) at Hanford. Previous glass formulations developed for this HLW had high waste loadings but their processing rates were lower that desired. The present work was aimed at improving the glass processing rate while maintaining high waste loadings. Glass formulations were designed, prepared at crucible-scale and characterized to determine their properties relevant to processing and product quality. Glass formulations that met these requirements were screened for melt rates using small-scale tests. The small-scale melt rate screening included vertical gradient furnace (VGF) and direct feed consumption (DFC) melter tests. Based on the results of these tests, modified glass formulations were developed and selected for larger scale melter tests to determine their processing rate. Melter tests were conducted on the DuraMelter 100 (DMIOO) with a melt surface area of 0.11 m{sup 2} and the DuraMelter 1200 (DMI200) HLW Pilot Melter with a melt surface area of 1.2 m{sup 2}. The newly developed glass formulations had waste loadings as high as 50 wt%, with corresponding Al{sub 2}O{sub 3} concentration in the glass of 26.63 wt%. The new glass formulations …
Date:
January 4, 2010
Creator:
AA, KRUGER; BW, BOWAN; I, JOSEPH; H, GAN; WK, KOT; KS, MATLACK et al.
Object Type:
Article
System:
The UNT Digital Library
MELT RATE ENHANCEMENT FOR HIGH ALUMINUM HLW (HIGH LEVEL WASTE) GLASS FORMULATION FINAL REPORT 08R1360-1
This report describes the development and testing of new glass formulations for high aluminum waste streams that achieve high waste loadings while maintaining high processing rates. The testing was based on the compositions of Hanford High Level Waste (HLW) with limiting concentrations of aluminum specified by the Office of River Protection (ORP). The testing identified glass formulations that optimize waste loading and waste processing rate while meeting all processing and product quality requirements. The work included preparation and characterization of crucible melts and small scale melt rate screening tests. The results were used to select compositions for subsequent testing in a DuraMelter 100 (DM100) system. These tests were used to determine processing rates for the selected formulations as well as to examine the effects of increased glass processing temperature, and the form of aluminum in the waste simulant. Finally, one of the formulations was selected for large-scale confirmatory testing on the HLW Pilot Melter (DM1200), which is a one third scale prototype of the Hanford Tank Waste Treatment and Immobilization Plant (WTP) HLW melter and off-gas treatment system. This work builds on previous work performed at the Vitreous State Laboratory (VSL) for Department of Energy (DOE) to increase waste loading …
Date:
January 4, 2010
Creator:
AA, KRUGER; KS, MATLACK; W, KOT; IL, PEGG; I, JOSEPH; T, BARDAKCI et al.
Object Type:
Report
System:
The UNT Digital Library
Optical simulation for imaging reconnaissance and intelligence sensors OSIRIS: High fidelity sensor simulation test bed; Modified user`s manual
The OSIRIS program is an imaging optical simulation program which has been developed to predict the output of space-borne sensor systems. The simulation is radiometrically precise and includes highly realistic laser, atmosphere, and earth background models, as well as detailed models of optical components. This system was developed by Rockwell Power Services for the Los Alamos National Laboratory. It is based upon the LARC (Los Alamos Radiometry Code, also by Rockwell), and uses a similar command structure and 3d coordinate system as LARC. At present OSIRIS runs on the Cray I computer under the CTSS operating s stem, and is stored in the OSIRIS root directory on LANL CTSS mass storage.
Date:
January 4, 1988
Creator:
Abernathy, M. F. & Puccetti, M. G.
Object Type:
Report
System:
The UNT Digital Library
Boring-Tool.
Patent for "a boring tool for boring scarred and worn engine cylinders" (lines 14-15) that allows for more customization when cutting.
Date:
January 4, 1921
Creator:
Adams, George Reese.
Object Type:
Patent
System:
The Portal to Texas History
Public Interest Obligations Advisory Committee Home Page
By Executive Order No. 13038, President Clinton established the Advisory Committee on Public Interest Obligations of Digital Television Broadcasters (PIAC). The Committee studied and recommended the public interest responsibilities that should accompany the broadcasters' receipt of digital television licenses. NTIA serves as the Secretariat for the Advisory Committee.
Date:
January 4, 1999
Creator:
Advisory Committee on Public Interest Obligations of Digital Television Broadcasters
Object Type:
Website
System:
The UNT Digital Library
Transatlantic Regulatory Cooperation: A Possible Role for Congress
This report focuses on the creation of the Transatlantic Economic Council; the role of legislatures in the regulatory process; and the Transatlantic Legislators' Dialogue and its new role as an advisor to transatlantic regulatory efforts.
Date:
January 4, 2010
Creator:
Ahearn, Raymond J. & Morelli, Vincent
Object Type:
Report
System:
The UNT Digital Library
Photoluminescence Studies of Lateral Composition Modulated Short-Period AlAs/InAs Superlattices
We present low temperature photoluminescence data for a series of spontaneous lateral composition modulation in (AlAs){sub m}/(InAs){sub n} short period superlattices on InP with differing average lattice constants, i.e., varying global strain. The low temperature photoluminescence peak energies were found to be much lower than the corresponding energy expected for the equivalent In{sub x}Al{sub 1{minus}x}As alloy. The bandgap energy reductions are found to approach 500 meV and this reduction is found to correlated with the strength of the composition modulation wave amplitude.
Date:
January 4, 1999
Creator:
Ahrenkiel, S. P.; Follstaedt, D. M.; Jones, E. D.; Lee, S. R.; Mascarenhas, A.; Mirecki-Millunchick, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Cyclization Phenomena in the Sol-Gel Polymerization of a,w-Bis(triethoxysilyl)alkanes and Incorporation of the Cyclic Structures into Network Silsesquioxane Polymers
Intramolecular cyclizations during acid-catalyzed, sol-gel polymerizations of ct,co- bis(tietioxysilyl)aWmes substintidly lengtien gelties formonomers witietiylene- (l), propylene- (2), and butylene-(3)-bridging groups. These cyclizations reactions were found, using mass spectrometry and %i NMR spectroscopy, to lead preferentially to monomeric and dimeric products based on six and seven membered disilsesquioxane rings. 1,2- Bis(triethoxysilyl)ethane (1) reacts under acidic conditions to give a bicyclic drier (5) that is composed of two annelated seven membered rings. Under the same conditions, 1,3- bis(triethoxysilyl)propane (2), 1,4-bis(triethoxysilyl)butane (3), and z-1,4- bis(triethoxysilyl)but-2-ene (10) undergo an intramolecular condensation reaction to give the six membemd and seven membered cyclic disilsesquioxanes 6, 7, and 11. Subsequently, these cyclic monomers slowly react to form the tricyclic dirners 8,9 and 12. With NaOH as polymerization catalyst these cyclic silsesquioxanes readily ~aeted to afford gels that were shown by CP MAS z%i NMR and infr=d spectroscopes to retain some cyclic structures. Comparison of the porosity and microstructwe of xerogels prepared from the cyclic monomers 6 and 7 with gels prepared directly from their acyclic precursors 2 and 3, indicate that the final pore structure of the xerogels is markedly dependent on the nature of the precursor. In addition, despite the fact that the monomeric cyclic disilsesquioxane …
Date:
January 4, 1999
Creator:
Alam, T.M.; Carpenter, J.P.; Dorhout, P.K.; Greaves, J.; Loy, D.A.; Shaltout, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Vehicle-Wheel
Patent for a vehicle wheel with a tire that is improved with a spring cushion.
Date:
January 4, 1921
Creator:
Allan, William N.
Object Type:
Patent
System:
The Portal to Texas History
Fabrication of a simple materials system for study of Hg in a stainless steel.
The Spallation Neutron Source (SNS), currently under construction at Oak Ridge National Laboratory, is expected to employ a Hg target encased in a stainless steel. Little is known about the metallurgical behavior of this materials engineering system, which will occur in a service environment involving elevated temperatures and intense radiation. Under normal equilibrium conditions, however, Hg is known to be insoluble in and non-reactive with solid Fe and Cr but to form one or more intermetallics with Ni. Hg has been implanted into alloy 304L. For implantations at 400 and 500 C to a fluence of 3 x 10{sup 16} cm{sup {minus}2} sub-micron sized precipitates of Hg are formed, as judged, for example, from their solidification behavior on cooling during TEM observation. The formation of such a system of microtargets and possible studies employing them as in situ TEM specimens are discussed, which can provide useful empirical information in conjunction with SNS target development.
Date:
January 4, 1999
Creator:
Allen, C. W.
Object Type:
Article
System:
The UNT Digital Library
Multistage Infrared Emitters Based on InAsSb Strained Layers Grown by Metal-Organic Chemical Vapor Deposition
We report on the metal-organic chemical vapor deposition (MOCVD) of mid-infrared InAaSb multistage emitters using a high speed rotating disk reactor. The devices contain AlAsSb cladding and strained InAsSb active regions. These emitters have multistage, type I InAsSb/InAsP quantum well active regions. A semi-metal GaAsSb/InAs layer acts as an internal electron source for the multistage injection lasers and AlAsSb is the electron confinement layer. These structures are the first MOCVD multistage devices. Broadband LED's produced 2 mW average power at 3.7 {micro}m and 80 K and 0.1 mW at 4.3 {micro}m and 300K. A multistage, 3.8-3.9 {micro}m laser structure operated up to T=180 K. At 80 K, peak-power > 100 mW/facet and a high slope-efficiency (48%) were observed in these gain guided lasers.
Date:
January 4, 1999
Creator:
Allerman, A. A.; Baucom, K. C.; Biefeld, R. M. & Kurtz, S. R.
Object Type:
Article
System:
The UNT Digital Library
Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Deliverable 1.4.4: Ferron Sandstone lithofacies and case-study areas, Emery and Sevier Counties, Utah
The types of dominantly sandstone lithofacies that characterize the Cretaceous Ferron Sandstone reservoir types were tentatively identified before the project began. These reservoir types were defined and mapped at the regional scale and are the subject of the detailed, highly focused case studies. The purpose of conducting detailed case-study analysis is to develop a comprehensive, interdisciplinary, and quantitative characterization of fluvial-deltaic reservoirs which will allow realistic inter-well and reservoir-scale modeling to be used for improved oil-field development in actual reservoirs world-wide. The resulting benefits and value may: (1) increase recoverable reserves by identifying untapped compartments created by reservoir heterogeneity, (2) reduce development costs by more efficiently siting infill drilling locations, (3) increase deliverability by exploiting the reservoir along optimal fluid-flow paths, (4) enhance the application of new technologies, such as horizontal drilling, by identifying optimal drilling directions to maximize fluid-flow, and (5) identify reservoir trends for field extension drilling. Various geologic studies of the Ferron Sandstone were reviewed to compile a list of locations and types of lithofacies in the Ferron Sandstone to be examined in greater detail as part of the subsequent case studies. Preliminary regional interpretations were also used to help select the type and location of lithofacies …
Date:
January 4, 1996
Creator:
Allison, M. L.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Authorization Basis Document For the Proposed Biological Safety Level 3 (BSL-3) Facility (B368) at Lawrence Livermore National Laboratory Revision 2
The Lawrence Livermore National Laboratory Integrated Safety Management (ISM) System Description (LLNL 2002) and the Task Plan for the Preparation of Authorization Basis Documentation for the proposed Biosafety Level 3 Laboratory at Lawrence Livermore National Laboratory (DOE 2002a) require a PABD be prepared for the proposed BSL-3 Facility. NNSA-OAK approval is required prior to its construction. This Preliminary Authorization Basis Documentation (PABD) formalizes and documents the hazard evaluation and its results for the Biosafety level 3 (BSL-3) facility. The PABD for the proposed BSL-3 facility provides the following information: (1) BSL-3 facility's site description; (2) general description of the BSL-3 facility and its operations; (3) identification of facility hazards; (4) generic hazard analysis; (5) identification of controls important to safety; and (6) safety management programs. The PABD characterizes the level of intrinsic potential hazard associated with a facility and provides the basis for its hazard classification. The hazard classification determines the level of safety documentation required and the level of review and approval for the safety analysis. The hazards of primary concern associated with the BSL-3 facility are biological. The hazard classification is determined by comparing facility inventories of biological materials and activities with the BSL-3 threshold established by the …
Date:
January 4, 2005
Creator:
Altenbach, T & Nguyen, S
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY1999: An Overview
This is a funding level summary of each of the 13 annual appropriation acts for FY1999 appears in the summaries of annual appropriations spending section of this report.
Date:
January 4, 1999
Creator:
Anderson, J. Michael
Object Type:
Report
System:
The UNT Digital Library
Use of Gadolinium as a Primary Criticality Control in Disposing Waste Containing Plutonium at SRS
Use of gadolinium as a neutron poison has been proposed for disposing of several metric tons of excess plutonium at the Savannah River Site (SRS). The plutonium will first be dissolved in nitric acid in small batches. Gadolinium nitrate will then be added to the plutonium nitrate solution. The Gd-poisoned plutonium solution will be neutralized and transferred to large under-ground tanks. The pH of small batches of neutralized plutonium solution will be adjusted prior to addition of the glass frit for eventual production as glass logs. The use of gadolinium as the neutron poison would minimize the number of glass logs generated from this disposition. The primary criticality safety concerns regarding the disposal process are: (1) maintaining neutron moderation under all processing conditions since gadolinium has a very large absorption cross section for thermal neutrons, (2) characteristics of plutonium and gadolinium precipitation during the neutralization process, (3) mixing characteristics of the precipitate to ensure that plutonium would remain homogeneously mixed with gadolinium, and (4) potential separation of plutonium and gadolinium during nitric and formic acids addition. A number of experiments were conducted at the Savannah River National Laboratory to study the behavior of plutonium and gadolinium at various stages of …
Date:
January 4, 2005
Creator:
Andrew, Vincent
Object Type:
Article
System:
The UNT Digital Library
Reimbursement of Local Private Nonprofit Organizations Under the Stafford Act
None
Date:
January 4, 2006
Creator:
Angelheart, Ann
Object Type:
Report
System:
The UNT Digital Library
Well-Drill Machine.
Patent for improvements in well-drill machine by improving its operating and feed mechanisms.
Date:
January 4, 1910
Creator:
Anthony, Russell
Object Type:
Patent
System:
The Portal to Texas History
Cleanup Verification Package for the 118-F-3, Minor Construction Burial Ground
This cleanup verification package documents completion of remedial action for the 118-F-3, Minor Construction Burial Ground waste site. This site was an open field covered with cobbles, with no vegetation growing on the surface. The site received irradiated reactor parts that were removed during conversion of the 105-F Reactor from the Liquid 3X to the Ball 3X Project safety systems and received mostly vertical safety rod thimbles and step plugs.
Date:
January 4, 2007
Creator:
Appel, M. J.
Object Type:
Report
System:
The UNT Digital Library
Wire Array Z-Pinch Insights for Enhanced X-Ray Production
Comparisons of measured total radiated x-ray power from annular wire-array z-pinches with a variety of models as a function of wire number, array mass, and load radius are reviewed. The data, which are comprehensive, have provided important insights into the features of wire-array dynamics that are critical for high x-ray power generation. Collectively, the comparisons of the data with the model calculations suggest that a number of underlying dynamical mechanisms involving cylindrical asymmetries and plasma instabilities contribute to the measured characteristics. For example, under the general assumption that the measured risetime of the total-radiated-power pulse is related to the thickness of the plasma shell formed on axis, the Heuristic Model [IEEE Trans. Plasma Sci., 26, 1275 (1998)] agrees with the measured risetime under a number of specific assumptions about the way the breakdown of the wires, the wire-plasma expansion, and the Rayleigh-Taylor instability in the r-z plane, interact. Likewise, in the high wire-number regime (where the wires are calculated to form a plasma shell prior to significant radial motion of the shell) the comparisons show that the variation in the power of the radiation generated as a function of load mass and array radius can be simulated by the 2-D …
Date:
January 4, 1999
Creator:
Apruzese, J. P.; Chittenden, J. P.; Greenly, J. B.; Haines, M. G.; Mock, R. C.; Mosher, D. et al.
Object Type:
Article
System:
The UNT Digital Library
NATO and the European Union
Report which discusses issues related to the North Atlantic Trade Organization (NATO) and the European Union (EU) including the level of involvement of the entities in using political and military actions to defend against terrorism and proliferation, the types of military forces necessary, the role of the EU in crisis management, the appropriateness of decision-making procedures to respond to emerging threats, and the role of other international institutions.
Date:
January 4, 2005
Creator:
Archick, Kristin & Gallis, Paul E.
Object Type:
Report
System:
The UNT Digital Library
High Temperature Dynamic Hohlraums on the Pulsed Power Driver Z
In the concept of the dynamic hohlraum an imploding z-pinch is optically thick to its own radiation. Radiation may be trapped inside the pinch to give a radiation temperature inside the pinch greater than that outside the pinch. The radiation is typically produced by colliding an outer Z-pinch liner onto an inner liner. The collision generates a strongly radiating shock, and the radiation is trapped by the outer liner. As the implosion continues after the collision the radiation temperature may continue to increase due to ongoing PdV (pressure times change in volume) work done by the implosion. In principal the radiation temperature may increase to the point at which the outer liner burns through, becomes optically thin, and no longer traps the radiation. One application of the dynamic hohlraum is to drive an ICF (inertial confinement fusion) pellet with the trapped radiation field. Members of the dynamic hohlraum team at Sandia National Labs have used the pulsed power driver Z (20 LMA, 100 ns) to create a dynamic hohlraum with temperature linearly ramping from 100 to 180 eV over 5 ns. On this shot zp214 a nested tungsten wire array of 4 and 2 cm diameters with masses of 2 …
Date:
January 4, 1999
Creator:
Armijo, J.; Chandler, G.A.; Cooper, G.; Derzon, M.S.; Fehl, D.; Gilliland, T. et al.
Object Type:
Article
System:
The UNT Digital Library
Middle-Breaker and Turning-Plow.
Patent for improvements in middle-breakers and turning-plows by providing an attachment for the middle breakers or turning plow, in which it will permit lateral adjustment of the wheel, by the use of a compound axle of adjustable length. (Lines 10-15) Illustration is included.
Date:
January 4, 1910
Creator:
Armstrong, Josiah B. C.
Object Type:
Patent
System:
The Portal to Texas History
The Budget for Fiscal Year 2008
This report discusses the Food and Drug Administration's (FDA's) FY2009 budget request of $2.676 billion that would provide a 17.9% increase ($406 million) over FY2008. It includes an overview and breakdowns for specific programs: Foods Program, Human Drugs Program, Biologics program, Animal Drugs and Feed Program, and the Devices and Radiological Health Program.
Date:
January 4, 2008
Creator:
Austin, D. Andrew
Object Type:
Report
System:
The UNT Digital Library
CONDENSING ECONOMIZERS FOR SMALL COAL-FIRED BOILERS AND FURNACES PROJECT REPORT - JANUARY 1994
Condensing economizers increase the thermal efficiency of boilers by recovering sensible and latent heat from exhaust gas. These economizers are currently being used commercially for this purpose in a wide range of applications. Performance is dependent upon application-specific factors affecting the utility of recovered heat. With the addition of a condensing economizer boiler efficiency improvements up to 10% are possible. Condensing economizers can also capture flue gas particulates. In this work, the potential use of condensing economizers for both efficiency improvement and control of particulate emissions from small, coal water slurry-fired boilers was evaluated. Analysis was done to predict heat transfer and particulate capture by mechanisms including: inertial impaction, interception, diffusion, thermophoretic forces, and condensation growth. Shell-and-tube geometries were considered with flue gas on the outside of Teflon-covered tubes. Experimental studies were done with both air- and water-cooled economizers refit to a small boiler. Two experimental arrangements were used including oil-firing with injection of flyash upstream of the economizer and direct coal water slurry firing. Firing rates ranged from 27 to 82 kW (92,000 to 280,000 Btu/hr). Inertial impaction was found to be the most important particulate capture mechanism and removal efficiencies to 95% were achieved. With the addition of …
Date:
January 4, 1994
Creator:
BUTCHER,T.A.
Object Type:
Report
System:
The UNT Digital Library