Groundwater Monitoring Plan for the Solid Waste Landfill (open access)

Groundwater Monitoring Plan for the Solid Waste Landfill

This monitoring plan includes well and constituent lists, and summarizes sampling, analytical, and quality control requirements. Changes from the previous monitoring plan include elimination of two radionuclides from the analyte list and some minor changes in the statistical analysis.
Date: October 13, 2000
Creator: Lindberg, Jonathan W. & Chou, Charissa J.
Object Type: Report
System: The UNT Digital Library
Preliminary safety assessment for an IFE target fabrication facility (open access)

Preliminary safety assessment for an IFE target fabrication facility

We estimate possible ranges of tritium inventories for an inertial fusion energy (IFE) target fabrication facility producing various types of targets and using various production technologies. Target fill is the key subtask in determining the overall tritium inventory for the plant. By segmenting the inventory into multiple, parallel production lines--each with its own fill canister--and including an expansion tank to limit releases, we are able to ensure that a target fabrication facility would meet the accident dose goals of 10 mSv (1 rem) set forth in the Department of Energy's Fusion Safety Standards. For indirect-drive targets, we calculate release fractions for elements from lithium to bismuth and show that nearly all elements meet the dose goal. Our work suggests directions for future R&D that will help reduce total tritium inventories and increase the flexibility of target fabrication facilities.
Date: October 13, 2000
Creator: Latkowski, J F; Reyes, S; Besenbruch, G E & Goodin, D T
Object Type: Article
System: The UNT Digital Library
Canister Transfer Facility Criticality Calculations (open access)

Canister Transfer Facility Criticality Calculations

The objective of this calculation is to evaluate the criticality risk in the surface facility for design basis events (DBE) involving Department of Energy (DOE) Spent Nuclear Fuel (SNF) standardized canisters (Civilian Radioactive Waste Management System [CRWMS] Management and Operating Contractor [M&O] 2000a). Since some of the canisters will be stored in the surface facility before they are loaded in the waste package (WP), this calculation supports the demonstration of concept viability related to the Surface Facility environment. The scope of this calculation is limited to the consideration of three DOE SNF fuels, specifically Enrico Fermi SNF, Training Research Isotope General Atomic (TRIGA) SNF, and Mixed Oxide (MOX) Fast Flux Test Facility (FFTF) SNF.
Date: October 13, 2000
Creator: Monroe-Rammsy, J. E.
Object Type: Report
System: The UNT Digital Library
Low-enriched uranium-molybdenum fuel plate development. (open access)

Low-enriched uranium-molybdenum fuel plate development.

None
Date: October 13, 2000
Creator: Wiencek, T. C. & Prokofiev, I. G.
Object Type: Article
System: The UNT Digital Library
Wind Powering America - New Jersey (open access)

Wind Powering America - New Jersey

This fact sheet describes the wind energy deployment efforts and green power programs in the state of New Jersey.
Date: October 13, 2000
Creator: O'Dell, K.
Object Type: Book
System: The UNT Digital Library
Relativistic quantum dynamics of many-body systems. (open access)

Relativistic quantum dynamics of many-body systems.

None
Date: October 13, 2000
Creator: Coester, F. & Polyzou, W. N.
Object Type: Article
System: The UNT Digital Library
Disposal of Draeger Tubes at Savannah River Site (open access)

Disposal of Draeger Tubes at Savannah River Site

The Savannah River Site (SRS) is a Department of Energy (DOE) facility located in Aiken, South Carolina that is operated by the Westinghouse Savannah River Company (WSRC). At SRS Draeger tubes are used to identify the amount and type of a particular chemical constituent in the atmosphere. Draeger tubes rely on a chemical reaction to identify the nature and type of a particular chemical constituent in the atmosphere. Disposal practices for these tubes were identified by performing a hazardous waste evaluation per the Resource Conservation and Recovery Act (RCRA). Additional investigations were conducted to provide guidance for their safe handling, storage and disposal. A list of Draeger tubes commonly used at SRS was first evaluated to determine if they contained any material that could render them as a RCRA hazardous waste. Disposal techniques for Draeger tubes that contained any of the toxic contaminants listed in South Carolina Hazardous Waste Management Regulations (SCHWMR) R.61-79. 261.24 (b) and/or contained an acid in the liquid form were addressed.
Date: October 13, 2000
Creator: Malik, N.P.
Object Type: Article
System: The UNT Digital Library
Optimization of PET system design for lesion detection (open access)

Optimization of PET system design for lesion detection

Traditionally, the figures of merit used in designing a PET scanner are spatial resolution, noise equivalent count rate, noise equivalent sensitivity, etc. These measures, however, do not directly reflect the lesion detectability using the PET scanner. Here we propose to optimize PET scanner design directly for lesion detection. The signal-to-noise ratio (SNR) of lesion detection can be easily computed using the theoretical expressions that we have previously derived. Because no time consuming Monte Carlo simulation is needed, the theoretical expressions allow evaluation of a large range of parameters. The PET system parameters can then be chosen to achieve the maximum SNR for lesion detection. The simulation study shown in this paper was focused a single ring PET scanner without depth of interaction measurement. Randoms and scatters were also ignored.
Date: October 13, 2000
Creator: Qi, Jinyi
Object Type: Article
System: The UNT Digital Library
Synthesis of superlow friction carbon films from highly hydrogenated methane plasmas. (open access)

Synthesis of superlow friction carbon films from highly hydrogenated methane plasmas.

In this study, we investigated the friction and wear performance of diamondlike carbon films (DLC) derived from increasingly hydrogenated methane plasmas. The films were deposited on steel substrates by a plasma-enhanced chemical vapor deposition process at room temperature and the tribological tests were performed in dry nitrogen. Tests results revealed a close correlation between the hydrogen in source gas plasma and the friction and wear coefficients of the DLC films. Specifically, films grown in plasmas with higher hydrogen-to-carbon ratios had much lower friction coefficients and wear rates than did films derived from source gases with lower hydrogen-to-carbon ratios. The lowest friction coefficient (0.003) was achieved with a film derived from 25% methane--75% hydrogen, while a coefficient of 0.015 was found for films derived from pure methane. Similar correlations were observed for wear rates. Films derived from hydrogen-rich plasmas had the least wear, while films derived from pure methane suffered the highest wear. We used a combination of surface analytical methods to characterize the structure and chemistry of the DLC films and worn surfaces.
Date: October 13, 2000
Creator: Erdemir, A.; Eryilmaz, O. L.; Nilufer, I. B. & Fenske, G. R.
Object Type: Article
System: The UNT Digital Library