16 Matching Results

Search Results

Results: 1 - 16
open access

Computer Modeling of Saltstone Landfills by Intera Environmental Consultants

Description: This report summaries the computer modeling studies and how the results of these studies were used to estimate contaminant releases to the groundwater. These modeling studies were used to improve saltstone landfill designs and are the basis for the current reference design. With the reference landfill design, EPA Drinking Water Standards can be met for all chemicals and radionuclides contained in Savannah River Plant waste salts.
Date: August 9, 2001
Creator: Albenesius, E.L.
Partner: UNT Libraries Government Documents Department
open access

A Parallel Two-fluid Code for Global Magnetic Reconnection Studies

Description: This paper describes a new algorithm for the computation of two-dimensional resistive magnetohydrodynamic (MHD) and two-fluid studies of magnetic reconnection in plasmas. It has been implemented on several parallel platforms and shows good scalability up to 32 CPUs for reasonable problem sizes. A fixed, nonuniform rectangular mesh is used to resolve the different spatial scales in the reconnection problem. The resistive MHD version of the code uses an implicit/explicit hybrid method, while the … more
Date: August 9, 2001
Creator: Breslau, J. A. & Jardin, S. C.
Partner: UNT Libraries Government Documents Department
open access

Development of a New Shielding Model for JB-Line Dose Rate Calculations

Description: This report describes the shielding model development for the JB-Line Upgrade project. The product of this effort is a simple-to-use but accurate method of estimating the personnel dose expected for various operating conditions on the line. The current techniques for shielding calculations use transport codes such as ANISN which, while accurate for geometries which can be accurately approximated as one dimensional slabs, cylinders or spheres, fall short in calculating configurations in which tw… more
Date: August 9, 2001
Creator: Buckner, M. R.
Partner: UNT Libraries Government Documents Department
open access

Uncertainties Affecting BOSFN for the Mark 15 Assembly

Description: Technical and transient protection limits are specified on the nominal burnout safety factor, BOSFN, to avoid significant release of fission products caused by local film boiling burnout. The risk of fission product release, BOR, due to film boiling burnout is statistically determined where allowances are made to account for differences between the nominal assembly and the actual assembly. This report describes the calculational model behind BOR and how the specific numerical values were estima… more
Date: August 9, 2001
Creator: Hamm, L.L.
Partner: UNT Libraries Government Documents Department
open access

Results of High Harmonic Fast Wave Heating Experiments on NSTX

Description: The study of high-harmonic fast-wave (HHFW) heating and current drive is being conducted on the National Spherical Torus Experiment (NSTX) device to determine the physics of applying radio-frequency (rf) waves at high harmonics (approximately 10-20) of the ion cyclotron frequency in this high-beta plasma regime and to extend the performance of the NSTX plasma. The magnetic field of this low aspect ratio device is lower (less than or equal to 0.35 T for this work) than that for the typical moder… more
Date: August 9, 2001
Creator: Hosea, J. C.; Bell, R. E.; Bitter, M.; Bonoli, P.; Carter, M.; Gates, D. et al.
Partner: UNT Libraries Government Documents Department
open access

A History of Federal Estate, Gift, and Generation-Skipping Taxes

Description: This report details the history of the three federal transfer taxes, tracing their development from their eighteenth century roots to the present.
Date: August 9, 2001
Creator: Luckey, John R.
Partner: UNT Libraries Government Documents Department
open access

A History of Federal Estate, Gift, and Generation-Skipping Taxes

Description: In this report, the history of the federal transfer taxes, has been divided into four parts: (1) the federal death and gift taxes utilized in the period 1789 to 1915; (2) the development of the modern estate and gift taxes from 1916 through 1975; (3) the creation and refinement of a unified estate and gift tax system, supplemented by a generation-skipping transfer tax; and (4) the phase out and repeal of the estate and generation-skipping taxes, with the gift tax being retained as a device to p… more
Date: August 9, 2001
Creator: Luckey, John R.
Partner: UNT Libraries Government Documents Department
open access

Symmetric Rock Fall on Waste Package

Description: The objective of this calculation is to determine the structural response of the Naval SNF (spent nuclear fuel) Waste Package (WP) and the emplacement pallet (EP) subjected to the rock fall DBE (design basis event) dynamic loads. The scope of this calculation is limited to reporting the calculation results in terms of stress intensities and residual stresses in the WP, and stress intensities and maximum permanent downward displacements of the EP-lifting surface. The information provided by the … more
Date: August 9, 2001
Creator: Mastilovic, Sreten
Partner: UNT Libraries Government Documents Department
open access

The Mark 15 Marco Library and Recent Updating of the Marco Code

Description: This report discusses two tasks: (1) introduction of the Mark 15-MARCO library within the context of an overview of the methodology of MARCO and (2) assessment of the accuracy of MARCO calculations of the Mark 15 MOC at beginning of cycle.
Date: August 9, 2001
Creator: Parks, P. B. & Willard, R. G.
Partner: UNT Libraries Government Documents Department
open access

On Plasma Rotation Induced by Traveling Fast Alfvin Waves

Description: Absorption of fast Alfven waves by the minority fundamental ion-cyclotron resonance, coupled with finite banana width physics, generates torque distributions and ultimately rotational shear layers in the bulk plasma, even when the toroidal wavenumber k(subscript ''phi'') = n/R of the fast wave vanishes (n=0) and cyclotron absorption introduces no angular momentum nor canonical angular momentum [F.W. Perkins, R.B. White, P.T. Bonoli, and V.S. Chan, Phys. Plasmas 8 (2001) 2181]. The present work … more
Date: August 9, 2001
Creator: Perkins, F. W.; White, R. B. & Chan, V. S.
Partner: UNT Libraries Government Documents Department
open access

Senate Committee Activity: Action on Measures Referred, 1973-2000

Description: This report discusses the use of committees as crucial centers of policymaking, oversight of federal agencies, and public education is an organizing principle of the contemporary Congress.
Date: August 9, 2001
Creator: Petersen, R. Eric & Beth, Richard S.
Partner: UNT Libraries Government Documents Department
open access

Calcite Precipitation and Trace Metal Partitioning in Groundwater and the Vadose Zone: Remediation of Strontium-90 and Other Divalent Metals and Radionuclides in Arid Western Environments

Description: Radionuclide and metal contaminants are present in the vadose zone and groundwater throughout the U.S. Department of Energy (DOE) weapons complex. Demonstrating in situ immobilization of these contaminants in vadose zones or groundwater plumes is a cost-effective remediation strategy. However, the implementation of in situ remediation requires definition of the mechanism that controls sequestration of the contaminants. One such mechanism for metals and radionuclides is co-precipitation of these… more
Date: August 9, 2001
Creator: Smith, Robert W.; Colwell, F. S.; Ingram, Jani C.; Ferris, F. Grant & Reysenbach, Anna-Louise
Partner: UNT Libraries Government Documents Department
open access

Report of Iridium/{sup 238}PuO{sub 2} Compatibility Test

Description: This study indicates that the chemical purity of the fuel used presently to fabricate fueled clad vent sets will not present any special problems to the performance of the fueled clad vent sets as intended. However, cation impurities in the fuel can have a deleterious effect on the iridium cladding and vents and should be minimized as much as practical.
Date: August 9, 2001
Creator: Taylor, D. H.
Partner: UNT Libraries Government Documents Department
open access

Mass Transit: FTA Could Relieve New Starts Program Funding Constraints

Description: A letter report issued by the General Accounting Office with an abstract that begins "The Federal Transit Administration's (FTA) New Starts program has provided state and local agencies with more than $6 billion in the last eight years to help design and construct transit projects. Although the funding for this program is higher than it has ever been, the demand for these resources is also extremely high. FTA was directed to prioritize projects for funding by evaluating, rating, and recommendin… more
Date: August 9, 2001
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Deposit Summary

Description: Deposit summary of $35.00 made on August 9, 2001.
Date: August 9, 2001
Partner: UNT Libraries Special Collections
Back to Top of Screen