Resource Type

States

436 Matching Results

Results open in a new window/tab.

Electricity: The Road Toward Restructuring (open access)

Electricity: The Road Toward Restructuring

This report talks about Electricity regulation and transmission issues. It also includes the history of the California Electricity Crisis.
Date: May 11, 2000
Creator: Abel, Amy & Parker, Larry
System: The UNT Digital Library
Polycube oxidation and factors affecting the concentrations of gaseous products (open access)

Polycube oxidation and factors affecting the concentrations of gaseous products

The polycubes stored at the Hanford Plutonium Finishing Plant (PFP) have been identified in a Vulnerability Assessment as material that requires a stabilization process in support of the Defense Nuclear Facility Safety Board Recommendation 94-1. The baseline plan involves a pyrolysis process to separate out the plutonium and uranium oxides before the remaining material is packaged for interim storage, in accordance with the Record of Decision (ROD), issued June 25, 1996, for the Plutonium Finishing Plant Stabilization Final Environmental Impact Statement, DOE/EIS-0244-F. The polycubes were manufactured at Hanford in the 1960s for use in criticality studies to determine the hydrogen-to-fissile atom ratios for neutron moderation. A mixture of plutonium and/or uranium oxides and a polystyrene (vinyl benzene) matrix, cast into the shape of cubes, the polycubes simulated solutions containing high concentrations of fissile materials. The polycubes varied in size, typically 1/2 x 2 x 2 in. up to 2 x 2 x 2 in., and were sealed with a coating of aluminum paint and/or tape (PVC or Shurtape). The estimated 1,600 polycubes (calculated 179,165 grams net weight) stored at PFP were packed in vented food cans with five to eight cubes per can to accommodate gas generation by radiolysis. Some …
Date: May 4, 2000
Creator: Abrefah, J.; MacFarlan, P. J. & Sell, R. L.
System: The UNT Digital Library
Reduction of Tropical Cloudiness by Soot (open access)

Reduction of Tropical Cloudiness by Soot

Measurements and models show that enhanced aerosol concentrations can augment cloud albedo not only by increasing total droplet cross-sectional area, but also by reducing precipitation and thereby increasing cloud water content and cloud coverage. Aerosol pollution is expected to exert a net cooling influence on the global climate through these conventional mechanisms. Here we demonstrate an opposite mechanism through which aerosols can reduce cloud cover and thus significantly offset aerosol-induced radiative cooling at the top of the atmosphere on a regional scale. In model simulations the daytime clearing of trade cumulus is hastened and intensified by solar heating in dark haze (as found over much of the northern Indian Ocean during the northeast monsoon).
Date: May 8, 2000
Creator: Ackerman, A. S.; Toon, O. B.; Stevens, D. E.; Heymsfield, A. J. & Ramanathan, V.
System: The UNT Digital Library
Tank Characterization Report for Single Shell Tank (SST) 241-TX-118 (open access)

Tank Characterization Report for Single Shell Tank (SST) 241-TX-118

None
Date: May 5, 2000
Creator: Adams, M. R.
System: The UNT Digital Library
FACT (Version 2.0) - Subsurface Flow and Contaminant Transport Documentation and User's Guide (open access)

FACT (Version 2.0) - Subsurface Flow and Contaminant Transport Documentation and User's Guide

This report documents a finite element code designed to model subsurface flow and contaminant transport, named FACT. FACT is a transient three-dimensional, finite element code designed to simulate isothermal groundwater flow, moisture movement, and solute transport in variably saturated and fully saturated subsurface porous media.
Date: May 5, 2000
Creator: Aleman, S. E.
System: The UNT Digital Library
Contained rocket motor burn demonstrations in X-tunnel: Final report for the DoD/DOE Joint Demilitarization Technology Program (open access)

Contained rocket motor burn demonstrations in X-tunnel: Final report for the DoD/DOE Joint Demilitarization Technology Program

Three low-pressure rocket motor propellant burn tests were performed in a large, sealed test chamber located at the X-tunnel complex on the Department of Energy's Nevada Test Site in the period May--June 1997. NIKE rocket motors containing double base propellant were used in two tests (two and four motors, respectively), and the third test used two improved HAWK rocket motors containing composite propellant. The preliminary containment safety calculations, the crack and burn procedures used in each test, and the results of various measurements made during and after each test are all summarized and collected in this document.
Date: May 1, 2000
Creator: Allendorf, S. W.; Bellow, B. W. & Boehm, R. f.
System: The UNT Digital Library
Container Refurbishment Cycle Time Reduction (CTR) Project (open access)

Container Refurbishment Cycle Time Reduction (CTR) Project

In mid-1999, a Cycle Time Reduction (CTR) project was initiated by senior management to improve the overall efficiency of the Container Refurbishment process. A cross-functional team was formed by the Industrial Engineering Services group within Product Certification Organization to evaluate the current process and to propose necessary changes for improvement. The CTR team efforts have resulted in increased productivity equaling approximately $450K per year. The effort also significantly reduced the wait time required necessary to start assembly work on the shop floor. Increasing daily production time and identifying delays were key team goals. Following is a brief summary of accomplishments: (A) Productivity Improvements: (1) Reduced Radcon survey time for empty containers: (i) 50% at 9720-3 (ii) 67% at 9204-2 and (iii) 100% at 9212; (2) Eliminated container inspections at 9720-3; (3) Reduced charged time (includes hands-on labor and support functions) per empty container by 25%; (4) Reduced cycle time to refurbish a container by 25%. (Dramatic wait time reduction -Assembly); (5) Reduced the time for 9212 to receive empty, refurbished containers by 67-80%; (6) Reduced the time for 9204-2E to receive empty, refurbished containers from 1 day to immediate; (7) Implemented software to track time charged per container for continuous …
Date: May 15, 2000
Creator: Aloi, Tim; Anthony, Perry; Blair, Tom; Forester, Celina; Hall, Ken; Hawk, Todd et al.
System: The UNT Digital Library
Post-remediation biomonitoring of pesticides and other contaminants in marine waters and sediment near the United Heckathorn Superfund Site, Richmond, California (open access)

Post-remediation biomonitoring of pesticides and other contaminants in marine waters and sediment near the United Heckathorn Superfund Site, Richmond, California

Marine sediment remediation at the United Heckathorn Superfund Site was completed in April 1997. Water and mussel tissues were sampled in February 1999 from four stations near Lauritzen Canal in Richmond, California, for Year 2 of post-remediation monitoring of marine areas near the United Heckathorn Site. Dieldrin and dichlorodiphenyl trichloroethane (DDT) were analyzed in water samples, tissue samples from resident mussels, and tissue samples from transplanted mussels deployed for 4 months. Concentrations of dieldrin and total DDT in water and total DDT in tissue were compared with Year 1 of post-remediation monitoring, and with preremediation data from the California State Mussel Watch program (tissues) and the Ecological Risk Assessment for the United Heckathorn Superfund Site (tissues and water). Mussel tissues were also analyzed for polychlorinated biphenyls (PCB), which were detected in sediment samples. Chlorinated pesticide concentrations in water samples were similar to preremediation levels and did not meet remediation goals. Mean dieidrin concentrations in water ranged from 0.62 rig/L to 12.5 ng/L and were higher than the remediation goal (0.14 ng/L) at all stations. Mean total DDT concentrations in water ranged from 14.4 ng/L to 62.3 ng/L and exceeded the remediation goal (0.59 ng/L) at all stations. The highest concentrations …
Date: May 26, 2000
Creator: Antrim, LD & Kohn, NP
System: The UNT Digital Library
Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California (open access)

Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California

Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California
Date: May 26, 2000
Creator: Antrim, Lyle D. & Kohn, Nancy P.
System: The UNT Digital Library
Failure analysis of beryllium tile assembles following high heat flux testing for the ITER program (open access)

Failure analysis of beryllium tile assembles following high heat flux testing for the ITER program

The following document describes the processing, testing and post-test analysis of two Be-Cu assemblies that have successfully met the heat load requirements for the first wall and dome sections for the ITER (International Thermonuclear Experimental Reactor) fusion reactor. Several different joint assemblies were evaluated in support of a manufacturing technology investigation aimed at diffusion bonding or brazing a beryllium armor tile to a copper alloy heat sink for fusion reactor applications. Judicious selection of materials and coatings for these assemblies was essential to eliminate or minimize interactions with the highly reactive beryllium armor material. A thin titanium layer was used as a diffusion barrier to isolate the copper heat sink from the beryllium armor. To reduce residual stresses produced by differences in the expansion coefficients between the beryllium and copper, a compliant layer of aluminum or aluminum-beryllium (AlBeMet-150) was used. Aluminum was chosen because it does not chemically react with, and exhibits limited volubility in, beryllium. Two bonding processes were used to produce the assemblies. The primary process was a diffusion bonding technique. In this case, undesirable metallurgical reactions were minimized by keeping the materials in a solid state throughout the fabrication cycle. The other process employed an aluminum-silicon layer …
Date: May 1, 2000
Creator: B. C. Odegard, Jr.; Cadden, C. H. & Yang, N. Y. C.
System: The UNT Digital Library
Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Construction Acceptance Test Procedures (open access)

Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Construction Acceptance Test Procedures

None
Date: May 1, 2000
Creator: BAZINET, G.D.
System: The UNT Digital Library
Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Factory Acceptance Test procedures (open access)

Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Factory Acceptance Test procedures

None
Date: May 1, 2000
Creator: BAZINET, G.D.
System: The UNT Digital Library
Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Procurement Specifications [SEC 1 and 2] (open access)

Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Procurement Specifications [SEC 1 and 2]

This specification section defines the welding, brazing, thermal treatment, examination and testing requirements for carbon steel, and stainless steel piping.
Date: May 1, 2000
Creator: BAZINET, G.D.
System: The UNT Digital Library
Tank 241-SY-102 January 2000 Compatibility Grab Samples Analytical Results for the Final Report [SEC 1 and 2] (open access)

Tank 241-SY-102 January 2000 Compatibility Grab Samples Analytical Results for the Final Report [SEC 1 and 2]

This document is the format IV, final report for the tank 241-SY-102 (SY-102) grab samples taken in January 2000 to address waste compatibility concerns. Chemical, radiochemical, and physical analyses on the tank SY-102 samples were performed as directed in Comparability Grab Sampling and Analysis Plan for Fiscal Year 2000 (Sasaki 1999). No notification limits were exceeded. Preliminary data on samples 2SY-99-5, -6, and -7 were reported in ''Format II Report on Tank 241-SY-102 Waste Compatibility Grab Samples Taken in January 2000'' (Lockrem 2000). The data presented here represent the final results.
Date: May 11, 2000
Creator: BELL, K.E.
System: The UNT Digital Library
Canister Storage Building (CSB) Acceptance for Beneficial Use Index Roadmap of Supporting Documents (open access)

Canister Storage Building (CSB) Acceptance for Beneficial Use Index Roadmap of Supporting Documents

None
Date: May 9, 2000
Creator: BLACK, D.M.
System: The UNT Digital Library
Technical Evaluation for the Determination of CGI Designation for Safety Class Items Incorporated in Hose-in-Hose Transfer Line Assemblies (open access)

Technical Evaluation for the Determination of CGI Designation for Safety Class Items Incorporated in Hose-in-Hose Transfer Line Assemblies

The purpose of this technical evaluation is to determine whether the secondary hoses are to be categorized as Commercial Grade Items (CGI) or Engineered Equipment. This determination will identify whether or not use of the CGI Dedication process is appropriate.
Date: May 16, 2000
Creator: BUCHANAN, J.R.
System: The UNT Digital Library
Defense Outsurcing: OMB Circular A-76 Policy and Options for Congress-Proceedings of a CRS Seminar (open access)

Defense Outsurcing: OMB Circular A-76 Policy and Options for Congress-Proceedings of a CRS Seminar

None
Date: May 30, 2000
Creator: Bailey Grasso, Valerie
System: The UNT Digital Library
Neurological Diagnostic Accelerometer (open access)

Neurological Diagnostic Accelerometer

None
Date: May 26, 2000
Creator: Balls, J.D.
System: The UNT Digital Library
Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation (open access)

Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation

Circulating Fluidized Bed Combustion (CFBC) and Fluidized Bed Combustion (FBC) with recirculation are widely used technologies in the US for power generation. They have the advantage of fuel flexibility, and low NO{sub x} and SO{sub x} emissions. Typically, as partially combusted fuel is circulated in the system, only a split stream of this circulating stream is rejected, with remainder recycled to the combustor. As a consequence, there is unburned carbon and partially used, valuable, calcium hydroxide in the reject stream. If these useful materials in the reject stream can be recovered and sent back to the combustor, the efficiency of the system will be increased significantly and the equivalent emissions will be lower. This project studies an innovative concept to incorporate triboelectric separation into CFBC/FBC systems in order to preferentially split its recycle/reject streams based on material compositions of the particles. The objective is to answer whether useful constituents, like carbon, calcium carbonate and calcium hydroxide or oxide, can be selectively separated from combustion ash at elevated temperatures. Laboratory experimental studies are performed at temperatures from 25 C to 210 C, the data from which are presented in the form of recovery curves. These curves present quality-versus-quantity information useful for …
Date: May 25, 2000
Creator: Ban, Heng & Stencel, J.M.
System: The UNT Digital Library
Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation (open access)

Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation

Circulating Fluidized Bed Combustion (CFBC) and Fluidized Bed Combustion (FBC) with recirculation are widely used technologies in the US for power generation. They have the advantage of fuel flexibility, and low NO{sub x} and SO{sub x} emissions. Typically, as partially combusted fuel is circulated in the system, only a split stream of this circulating stream is rejected, with remainder recycled to the combustor. As a consequence, there is unburned carbon and partially used, valuable, calcium hydroxide in the reject stream. If these useful materials in the reject stream can be recovered and sent back to the combustor, the efficiency of the system will be increased significantly and the equivalent emissions will be lower. This project studies an innovative concept to incorporate triboelectric separation into CFBC/FBC systems in order to preferentially split its recycle/reject streams based on material compositions of the particles. The objective is to answer whether useful constituents, like carbon, calcium carbonate and calcium hydroxide or oxide, can be selectively separated from combustion ash at elevated temperatures. Laboratory experimental studies are performed at temperatures from 25 C to 210 C, the data from which are presented in the form of recovery curves. These curves present quality-versus-quantity information useful for …
Date: May 25, 2000
Creator: Ban, Heng & Stencel, J.M.
System: The UNT Digital Library
Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation (open access)

Preferential recycling/rejection in CFBC/FBC systems using triboelectrostatic separation

Circulating Fluidized Bed Combustion (CFBC) and Fluidized Bed Combustion (FBC) with recirculation are widely used technologies in the US for power generation. They have the advantage of fuel flexibility, and low NO{sub x} and SO{sub x} emissions. Typically, as partially combusted fuel is circulated in the system, only a split stream of this circulating stream is rejected, with remainder recycled to the combustor. As a consequence, there is unburned carbon and partially used, valuable, calcium hydroxide in the reject stream. If these useful materials in the reject stream can be recovered and sent back to the combustor, the efficiency of the system will be increased significantly and the equivalent emissions will be lower. This project studies an innovative concept to incorporate triboelectric separation into CFBC/FBC systems in order to preferentially split its recycle/reject streams based on material compositions of the particles. The objective is to answer whether useful constituents, like carbon, calcium carbonate and calcium hydroxide or oxide, can be selectively separated from combustion ash at elevated temperatures. Laboratory experimental studies are performed at temperatures from 25 C to 210 C, the data from which are presented in the form of recovery curves. These curves present quality-versus-quantity information useful for …
Date: May 25, 2000
Creator: Ban, Heng & Stencel, J.M.
System: The UNT Digital Library
Energy transfer properties and mechanisms [Ion-imaging measurements of the collision step-size distribution]. Final report (open access)
B1 magnet harmonics (open access)

B1 magnet harmonics

During the B0 Overpass construction for the CDF detector at Fermilab, 33 B1 magnets were measured using a bucked tangential coil. Measurements were made on the midplane, at the centerline and at {+-} 1 inch horizontal displacement. Since the coil was only 62 inches long, measurements were made at four longitudinal positions. Because of the design of the Main Ring, it was sufficient to combine data from all positions and report the harmonic spectrum for the magnet as a whole. For modeling the Scrounge-atron, it is more useful to treat each measurement position separately. The author reports here an analysis of the harmonic spectra at each probe position, based on the original data.
Date: May 30, 2000
Creator: Barnes, P. D.
System: The UNT Digital Library
Groundwater monitoring plan for the Hanford Site 200 Area Treated Effluent Disposal Facility (open access)

Groundwater monitoring plan for the Hanford Site 200 Area Treated Effluent Disposal Facility

Seven years of groundwater monitoring at the 200 Area Treated Effluent Disposal Facility (TEDF) have shown that the uppermost aquifer beneath the facility is unaffected by TEDF effluent. Effluent discharges have been well below permitted and expected volumes. Groundwater mounding from TEDF operations predicted by various models has not been observed, and waterlevels in TEDF wells have continued declining with the dissipation of the nearby B Pond System groundwater mound. Analytical results for constituents with enforcement limits indicate that concentrations of all these are below Practical Quantitation Limits, and some have produced no detections. Likewise, other constituents on the permit-required list have produced results that are mostly below sitewide background. Comprehensive geochemical analyses of groundwater from TEDF wells has shown that most constituents are below background levels as calculated by two Hanford Site-wide studies. Additionally, major ion proportions and anomalously low tritium activities suggest that groundwater in the aquifer beneath the TEDF has been sequestered from influences of adjoining portions of the aquifer and any discharge activities. This inference is supported by recent hydrogeologic investigations which indicate an extremely slow rate of groundwater movement beneath the TEDF. Detailed evaluation of TEDF-area hydrogeology and groundwater geochemistry indicate that additional points of …
Date: May 17, 2000
Creator: Barnett, DB
System: The UNT Digital Library