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Record of Technical Change No.2 for ``Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada''

Description: This Record of Technical Change provides updates to the technical information included in ``Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada.''
Date: November 19, 1999
Creator: /NV, USDOE
Partner: UNT Libraries Government Documents Department
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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 canisters provides an opportunity for a variety of crystalline forms to precipitate; (7) settling of crystals in a HLW glass melter may produce undesirable sludge at the melter bottom; and (8) crystallization of the glass product may increase, but also ruin chemical durability. The conclusions are: (1) crystal growth and dissolution typically proceed in a convective medium at changing temperature; (2) to represent crystallization or dissolution the kinetics must be expressed in the form of rate equations, such as dC/dt = f(C,T) and the temperature dependence of kinetic coefficients and equilibrium concentrations must be accounted for; and (3) non-equilibrium phenomena commonly occur - metastable crystallization, periodic distribution of crystals; and dendritic crystal growth.
Date: August 19, 2009
Creator: AA, KRUGER & PR, HRMA
Partner: UNT Libraries Government Documents Department
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IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM

Description: Technetium-99 (Tc-99) can bring a serious environmental threat because of its high fission yield, long half-life, and high solubility and mobility in the ground water. The present work investigated the immobilization of Tc-99 (surrogated by Re) by heat-treating mixtures of an iron-phosphate glass with 1.5 to 6 wt.% KReO{sub 4} at {approx}1000 C. The Re retention in the glass was as high as {approx}1.2 wt. % while the loss of Re by evaporation during melting was {approx}50%. Re was uniformly distributed within the glass. The normalized Re release by the 7-day Product Consistency Test was {approx}0.39 g/m{sup 2}, comparable with that in phosphate-bonded ceramics and borosilicate glasses. These results suggest that iron-phosphate glass can provide a good matrix for immobilizing Tc-99.
Date: March 19, 2012
Creator: AA, KRUGER; PR, HRMA; K, XU; J, CHOI; W, UM & J, HEO
Partner: UNT Libraries Government Documents Department
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[News Article: Baltimore Committee]

Description: A news article covering the ninth Annual Meeting of the National Cooperative Vaccine Development Groups for AIDS (NCVDG) and the contributions David Baltimore is making to AIDS research and HIV vaccine development.
Date: May 19, 1997
Creator: AIDS Weekly Plus
Partner: UNT Libraries Special Collections
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Accident and Off Normal Response and Recovery from Multi Canister Overpack (MCO) Processing Events

Description: In the process of removing spent nuclear fuel (SNF) from the K Basins through its subsequent packaging, drymg, transportation and storage steps, the SNF Project must be able to respond to all anticipated or foreseeable off-normal and accident events that may occur. Response procedures and recovery plans need to be in place, personnel training established and implemented to ensure the project will be capable of appropriate actions. To establish suitable project planning, these events must first be identified and analyzed for their expected impact to the project. This document assesses all off-normal and accident events for their potential cross-facility or Multi-Canister Overpack (MCO) process reversal impact. Table 1 provides the methodology for establishing the event planning level and these events are provided in Table 2 along with the general response and recovery planning. Accidents and off-normal events of the SNF Project have been evaluated and are identified in the appropriate facility Safety Analysis Report (SAR) or in the transportation Safety Analysis Report for Packaging (SARP). Hazards and accidents are summarized from these safety analyses and listed in separate tables for each facility and the transportation system in Appendix A, along with identified off-normal events. The tables identify the general response time required to ensure a stable state after the event, governing response documents, and the events with potential cross-facility or SNF process reversal impacts. The event closure is predicated on stable state response time, impact to operations and the mitigated annual occurrence frequency of the event as developed in the hazard analysis process.
Date: September 19, 2000
Creator: ALDERMAN, C.A.
Partner: UNT Libraries Government Documents Department
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Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6

Description: This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.
Date: April 19, 2000
Creator: ARD, K.E.
Partner: UNT Libraries Government Documents Department
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STATUS OF THE DEVELOPMENT OF IN-TANK/AT-TANK SEPARATIONS TECHNOLOGIES FOR FOR HIGH-LEVEL WASTE PROCESSING FOR THE U.S. DEPARTMENT OF ENERGY

Description: Within the U.S. Department of Energy's (DOE) Office of Technology Innovation and Development, the Office of Waste Processing manages a research and development program related to the treatment and disposition of radioactive waste. At the Savannah River (South Carolina) and Hanford (Washington) Sites, approximately 90 million gallons of waste are distributed among 226 storage tanks (grouped or collocated in 'tank farms'). This waste may be considered to contain mixed and stratified high activity and low activity constituent waste liquids, salts and sludges that are collectively managed as high level waste (HLW). A large majority of these wastes and associated facilities are unique to the DOE, meaning many of the programs to treat these materials are 'first-of-a-kind' and unprecedented in scope and complexity. As a result, the technologies required to disposition these wastes must be developed from basic principles, or require significant re-engineering to adapt to DOE's specific applications. Of particular interest recently, the development of In-tank or At-Tank separation processes have the potential to treat waste with high returns on financial investment. The primary objective associated with In-Tank or At-Tank separation processes is to accelerate waste processing. Insertion of the technologies will (1) maximize available tank space to efficiently support permanent waste disposition including vitrification; (2) treat problematic waste prior to transfer to the primary processing facilities at either site (i.e., Hanford's Waste Treatment and Immobilization Plant (WTP) or Savannah River's Salt Waste Processing Facility (SWPF)); and (3) create a parallel treatment process to shorten the overall treatment duration. This paper will review the status of several of the R&D projects being developed by the U.S. DOE including insertion of the ion exchange (IX) technologies, such as Small Column Ion Exchange (SCIX) at Savannah River. This has the potential to align the salt and sludge processing life cycle, thereby reducing …
Date: September 19, 2011
Creator: Aaron, G. & Wilmarth, B.
Partner: UNT Libraries Government Documents Department
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Search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV

Description: The results of a search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV with subsequent decay to dilepton (e{mu}, ee, and {mu}{mu}) channels are presented. One event is observed with an expected background of 0.56 {plus_minus} 0.13 events with an integrated luminosity of approximately 14 pb{sup {minus}1}. Assuming equal strengths for the WWZ and WW{gamma} gauge boson coupling parameters {kappa} and {lambda}, limits on the CP-conserving anomalous coupling constants are {minus}2.6 < {delta}{kappa} < 2.8 and {minus}2.1 {lambda} < 2.1 at the 95% confidence level.
Date: July 19, 1995
Creator: Abachi, S.
Partner: UNT Libraries Government Documents Department
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A PORTABLE BANDSAW FOR HOT CELL USE

Description: A commercial light-weight portable bandsaw was fitted with a grip to permit it to be maneuvered remotely in a hot cell by means of a General Mills manipulator The bandsaw was supported in various positions to make cuts on typical pieces. Photographs show the saw in operation. (auth)
Date: February 19, 1958
Creator: Abbatiello, A. A.
Partner: UNT Libraries Government Documents Department
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A Change in the Optical Polarization Associated with a Gamma-Ray Flare in the Blazar 3C 279

Description: It is widely accepted that strong and variable radiation detected over all accessible energy bands in a number of active galaxies arises from a relativistic, Doppler-boosted jet pointing close to our line of sight. The size of the emitting zone and the location of this region relative to the central supermassive black hole are, however, poorly known, with estimates ranging from light-hours to a light-year or more. Here we report the coincidence of a gamma ({gamma})-ray flare with a dramatic change of optical polarization angle. This provides evidence for co-spatiality of optical and {gamma}-ray emission regions and indicates a highly ordered jet magnetic field. The results also require a non-axisymmetric structure of the emission zone, implying a curved trajectory for the emitting material within the jet, with the dissipation region located at a considerable distance from the black hole, at about 10{sup 5} gravitational radii.
Date: August 19, 2011
Creator: Abdo, A. A.
Partner: UNT Libraries Government Documents Department
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Fermi-LAT Discovery of GeV Gamma-ray Emission from the Young Supernova Remnant Cassiopeia A

Description: We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. These observations reveal a source with no discernible spatial extension detected at a significance level of 12.2{sigma} above 500 MeV at a location that is consistent with the position of the remnant of the supernova explosion that occurred around 1680 in the Cassiopeia constellation - Cassiopeia A. The gamma-ray flux and spectral shape of the source are consistent with a scenario in which the gamma-ray emission originates from relativistic particles accelerated in the shell of this remnant. The total content of cosmic rays (electrons and protons) accelerated in Cas A can be estimated as W{sub CR} {approx_equal} (1-4) x 10{sup 49} erg thanks to the well-known density in the remnant assuming that the observed gamma-ray originates in the SNR shell(s). The magnetic field in the radio-emitting plasma can be robustly constrained as B {ge} 0.1 mG, providing new evidence of the magnetic field amplification at the forward shock and the strong field in the shocked ejecta.
Date: August 19, 2011
Creator: Abdo, A. A.
Partner: UNT Libraries Government Documents Department
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The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data

Description: We report on the first Fermi Large Area Telescope (LAT) measurements of the so-called 'extra-galactic' diffuse {gamma}-ray emission (EGB). This component of the diffuse {gamma}-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions discussed in the literature. The derivation of the EGB is based on detailed modelling of the bright foreground diffuse Galactic {gamma}-ray emission (DGE), the detected LAT sources and the solar {gamma}-ray emission. We find the spectrum of the EGB is consistent with a power law with differential spectral index {gamma} = 2.41 {+-} 0.05 and intensity, I(&gt; 100 MeV) = (1.03 {+-} 0.17) x 10{sup -5} cm{sup -2} s{sup -1} sr{sup -1}, where the error is systematics dominated. Our EGB spectrum is featureless, less intense, and softer than that derived from EGRET data.
Date: August 19, 2011
Creator: Abdo, A. A.
Partner: UNT Libraries Government Documents Department
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[RE: Exhibition Space at Regional Institute Team Meeting February 1 - 4, 1990, Chattanooga, Tennessee]

Description: A memo from Julie Abel, program associate for the Getty Center for Education in the Arts, to Jack Davis and William McCarter, co-directors of North Texas Institute for Educators on the Visual Arts. The memo is in regards to reserved exhibition space in the Bessie Smith room at the Radisson Read House, where reach regional institute can display any materials or information on their consortium.
Date: December 19, 1989
Creator: Abel, Julie
Partner: UNT Libraries Special Collections
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[RE: FY97 Rig Budgets and Final FY97 Grant Payments, December 19, 1996]

Description: Photocopy of a letter from Julie Abel, the Getty Center, to the Regional Institute Directors. In regards to the FY97 budgets and grant payments. Abel writes that to facilitate the FY97 grant funding, the Center will limit their analysis to the RIG's core program budgeting only.
Date: December 19, 1996
Creator: Abel, Julie
Partner: UNT Libraries Special Collections
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[RE: Goals 2000 Grants]

Description: Photocopy of a memo from Julie Abel, program assocation for the Getty Center for Education in the Arts, to the Regional Institute Directors. The memo is in regards to the directors getting in contact with their Goals 2000 Arts Education Leadership Fund project director to ensure that the programs and DBAE are part of their states reform plans. Enclosed with Abel's memo is a memo from Vicki Rosenberg regarding the important of participating in the states planning process.
Date: December 19, 1995
Creator: Abel, Julie
Partner: UNT Libraries Special Collections
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[RE: National Conference Inivitation Letters to RIG Funders, September 19, 1994]

Description: Photocopy of a letter from Julie Abel, Getty Center, to the Regional Institute Directors, in regards to an attached sample letter sent to all the RIG Funders, inviting them to the Getty Center's National Conference. Abel writes that each person will receive his or her own invitation with exhibit booth information.
Date: September 19, 1994
Creator: Abel, Julie
Partner: UNT Libraries Special Collections
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[Letter to Dr. R. William McCarter from Julie Anne Abel, with attached grant offer letter - July 19, 1996]

Description: A letter to Dr. R. William McCarter from Julie Anne Abel regarding a grant from the Getty Education Institute for the Arts to the North Texas Institute for Educators on the Visual Arts (NTIEVA). A five-page offer letter has been attached.
Date: July 19, 1996
Creator: Abel, Julie A.
Partner: UNT Libraries Special Collections
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