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Hondo Anvil Herald (Hondo, Tex.), Vol. 128, No. 49, Ed. 1 Thursday, December 7, 2000
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 7, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 114, No. 35, Ed. 1 Thursday, September 7, 2000
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 7, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 49, Ed. 1 Thursday, December 7, 2000
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
December 7, 2000
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 36, Ed. 1 Thursday, September 7, 2000
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
September 7, 2000
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Products of an Artificially Induced Hydrothermal System at Yucca Mountain
Studies of mineral deposition in the recent geologic past at Yucca Mountain, Nevada, address competing hypotheses of hydrothermal alteration and deposition from percolating groundwater. The secondary minerals being studied are calcite-opal deposits in fractures and lithophysal cavities of ash-flow tuffs exposed in the Exploratory Studies Facility (ESF), a 7.7-km tunnel excavated by the Yucca Mountain Site Characterization Project within Yucca Mountain. An underground field test in the ESF provided information about the minerals deposited by a short-lived artificial hydrothermal system and an opportunity for comparison of test products with the natural secondary minerals. The heating phase lasted nine months, followed by a nine-month cooling period. Natural pore fluids were the only source of water during the thermal test. Condensation and reflux of water driven away from the heater produced fluid flow in certain fractures and intersecting boreholes. The mineralogic products of the thermal test are calcite-gypsum aggregates of less than 4-micrometer crystals and amorphous silica as glassy scale less than 0.2 mm thick and as mounds of tubules with diameters less than 0.7 micrometers. The minute crystal sizes of calcite and gypsum from the field test are very different from the predominantly coarser calcite crystals (up to cm scale) in …
Date:
August 7, 2000
Creator:
Levy, S.
Object Type:
Report
System:
The UNT Digital Library
Reference Design Description for a Geologic Repository
One of the current major national environmental problems is the safe disposal of large quantities of spent nuclear fuel and high-level radioactive waste materials, which are rapidly accumulating throughout the country. These radioactive byproducts are generated as the result of national defense activities and from the generation of electricity by commercial nuclear power plants. At present, spent nuclear fuel is accumulating at over 70 power plant sites distributed throughout 33 states. The safe disposal of these high-level radioactive materials at a central disposal facility is a high national priority. This Reference Design Description explains the current design for a potential geologic repository that may be located at Yucca Mountain in Nevada for the disposal of spent nuclear fuel and high-level radioactive waste materials. This document describes a possible design for the three fundamental parts of a repository: a surface facility, subsurface repository, and waste packaging. It also presents the current conceptual design of the key engineering systems for the final four phases of repository processes: operations, monitoring, closure, and postclosure. In accordance with current law, this design does not include an interim storage option. In addition, this Reference Design Description reviews the expected long-term performance of the potential repository. It …
Date:
October 7, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Analysis of an Information Monitoring and Diagnostic System to Improve Building Operations
None
Date:
June 7, 2000
Creator:
Piette, Mary Ann; Kinney, Satkartar & Haves, Philip
Object Type:
Article
System:
The UNT Digital Library
COPA Commission
The COPA Commission, a congressionally appointed panel, was mandated by the Child Online Protection Act, which was approved by Congress in October 1998. The primary purpose of the Commission is to "identify technological or other methods that will help reduce access by minors to material that is harmful to minors on the Internet."
Date:
March 7, 2000
Creator:
COPA Commission
Object Type:
Website
System:
The UNT Digital Library
Impact of Parameter Uncertainty, Variability, and Conceptual Model Errors on Predictions of Flow Through Fractured Porous Media
Model predictions are affected by uncertainty in input parameters, stochastic variability in formation properties, computational roundoff and cancellation errors, and errors in the conceptual model. The source, nature, and relative magnitude of these errors vary considerably, depending on the physical processes involved, the quality and amount of available characterization data, and the overall objective of the study. We examined various types of uncertainties and their propagation with a predictive model that simulates a water pulse flowing through an unsaturated, fractured porous medium. The propagation of the water pulse depends not only on the hydraulic properties of the fracture network, but also on the strength of fracture-matrix interactions and the storage capacity of the matrix. Different predicted variables (such as local saturation changes, total amount of water retarded in the matrix, or first arrival of water at a certain depth) depend on different parameters and thus show different uncertainty structures. The strong nonlinearities inherent in such a system require the use of Monte Carlo simulations. These simulations investigate the spread of model predictions as a result of changes in spatial variability and uncertainty in key input parameters. We also discuss the role of conceptual-model formulation and parameter estimation in the development …
Date:
September 7, 2000
Creator:
Finsterle, S.
Object Type:
Report
System:
The UNT Digital Library
Longevity of Emplacement Drift Ground Support Materials
The purpose of this analysis is to evaluate the factors affecting the longevity of emplacement drift ground support materials and to develop a basis for selection of materials for ground support that will function throughout the preclosure period. The Development Plan (DP) for this analysis is given in CRWMS M&O (Civilian Radioactive Waste Management System Management and Operating Contractor) (1999a). The candidate materials for ground support are steel (carbon steel, ductile cast iron, galvanized steel, and stainless steel, etc.) and cement. Steel will mainly be used for steel sets, lagging, channels, rock bolts, and wire mesh. Cement usage is only considered in the case of grouted rock bolts. The candidate materials for the invert structure are steel and crushed rock ballast. The materials shall be evaluated for the repository emplacement drift environment under a specific thermal loading condition based on the proposed License Application Design Selection (LADS) design. The analysis consists of the following tasks: (1) Identify factors affecting the longevity of ground control materials for use in emplacement drifts. (2) Review existing documents concerning behavior of candidate ground control materials during the preclosure period. The major criteria to be considered for steel are mechanical and thermal properties, and durability, …
Date:
January 7, 2000
Creator:
Tang, D.
Object Type:
Report
System:
The UNT Digital Library
Micromirror Arrays for Adaptive Optics
The long-range goal of this project is to develop the optical and mechanical design of a micromirror array for adaptive optics that will meet the following criteria: flat mirror surface ({lambda}/20), high fill factor (> 95%), large stroke (5-10 {micro}m), and pixel size {approx}-200 {micro}m. This will be accomplished by optimizing the mirror surface and actuators independently and then combining them using bonding technologies that are currently being developed.
Date:
August 7, 2000
Creator:
Carr, E.J.
Object Type:
Report
System:
The UNT Digital Library
Spent Nuclear Fuel (SNF) Removal Campaign Plan
The overall operation of the Spent Nuclear Fuel Project will include fuel removal, sludge removal, debris removal, and deactivation transition activities. Figure 1-1 provides an overview of the current baseline operating schedule for project sub-systems, indicating that a majority of fuel removal activities are performed over an approximately three-and-one-half year time period. The purpose of this document is to describe the strategy for operating the fuel removal process systems. The campaign plan scope includes: (1) identifying a fuel selection sequence during fuel removal activities, (2) identifying MCOs that are subjected to extra testing (process validation) and monitoring, and (3) discussion of initial MCO loading and monitoring in the Canister Storage Building (CSB). The campaign plan is intended to integrate fuel selection requirements for handling special groups of fuel within the basin (e.g., single pass reactor fuel), process validation activities identified for process systems, and monitoring activities during storage.
Date:
August 7, 2000
Creator:
PAJUNEN, A.L.
Object Type:
Report
System:
The UNT Digital Library
Phase Startup Initiative Phases 3 and 4 Test Plan and Test Specification ( OCRWM)
Construction for the Spent Nuclear Fuel (SNF) Project facilities is continuing per the Level III Baseline Schedule, and installation of the Fuel Retrieval System (FRS) and Integrated Water Treatment System (IWTS) in K West Basin is now complete. In order to accelerate the project, a phased start up strategy to initiate testing of the FRS and IWTS early in the overall project schedule was proposed (Williams 1999). Wilkinson (1999) expands the definition of the original proposal into four functional testing phases of the Phased Startup Initiative (PSI). Phases 1 and 2 are based on performing functional tests using dummy fuel. This test plan provides overall guidance for Phase 3 and 4 tests, which are performed using actual irradiated N fuel assemblies. The overall objective of the Phase 3 and 4 testing is to verify how the FRS and IWTS respond while processing actual fuel. Conducting these tests early in the project schedule will allow identification and resolution of equipment and process problems before they become activities on the start-up critical path. The specific objectives of this test plan are to: Define the Phase 3 and 4 test scope for the FRS and IWTS; Provide detailed test requirements that can be …
Date:
August 7, 2000
Creator:
PAJUNEN, A.L. & LANGEVIN, M.J.
Object Type:
Report
System:
The UNT Digital Library
Plutonium Disposition by Immobilization
The ultimate goal of the Department of Energy (DOE) Immobilization Project is to develop, construct, and operate facilities that will immobilize between 17 to 50 tonnes (MT) of U.S. surplus weapons-usable plutonium materials in waste forms that meet the ''spent fuel'' standard and are acceptable for disposal in a geologic repository. Using the ceramic can-in-canister technology selected for immobilization, surplus plutonium materials will be chemically combined into ceramic forms which will be encapsulated within large canisters of high level waste (HLW) glass. Deployment of the immobilization capability should occur by 2008 and be completed within 10 years. In support of this goal, the DOE Office of Fissile Materials Disposition (MD) is conducting development and testing (D&T) activities at four DOE laboratories under the technical leadership of Lawrence Livermore National Laboratory (LLNL). The Savannah River Site has been selected as the site for the planned Plutonium Immobilization Plant (PIP). The D&T effort, now in its third year, will establish the technical bases for the design, construction, and operation of the U. S. capability to immobilize surplus plutonium in a suitable and cost-effective manner. Based on the D&T effort and on the development of a conceptual design of the PIP, automation is …
Date:
March 7, 2000
Creator:
Gould, T.; DiSabatino, A. & Mitchell, M.
Object Type:
Article
System:
The UNT Digital Library
High Energy Gamma Rays from p+X, X=Cu, Ag, Au at 34 MeV
In this paper we present results from the measurement of the gamma ray yield in the reaction of 34-MeV protons on Cu, Ag and Au. The protons were produced by the University of Washington superconducting linac. The gamma rays were measured using a large NaI and two large BaF{sub 2} detectors. Angular distributions were obtained for each of the three targets. Data for the Cu and Ag target were taken at six lab angles between 35 and 135 degrees, while data were taken at eight lab angles between 35 and 135 degrees for the Au target. The data were compared to several models. These included Hauser-Feshbach and direct-semidirect (DSD) calculations. We also compared the measurements to proton-nucleus bremsstrahlung calculations. The bremsstrahlung calculations greatly underpredicted the cross section and produced an angular distribution which was too flat. The Hauser-Feshbach calculations reproduced the yield of the softer portion of the spectrum reasonably well for all three targets. The DSD calculations reproduced the yield and angular distributions quite well for energies above about 20 MeV. However, the yields were underpredicted in the 15-18 MeV region, which suggests that multistep mechanisms may be needed for this target.
Date:
March 7, 2000
Creator:
Luke, S. J.; Dietrich, F. S.; Chadwick, M. B.; Gossett, C. A.; Kaplan, M. S.; McLain, B. T. et al.
Object Type:
Article
System:
The UNT Digital Library
Interim Safety Basis for Fuel Supply Shutdown Facility
This ISB, in conjunction with the IOSR, provides the required basis for interim operation or restrictions on interim operations and administrative controls for the facility until a SAR is prepared in accordance with the new requirements or the facility is shut down. It is concluded that the risks associated with tha current and anticipated mode of the facility, uranium disposition, clean up, and transition activities required for permanent closure, are within risk guidelines.
Date:
September 7, 2000
Creator:
BENECKE, M.W.
Object Type:
Report
System:
The UNT Digital Library
Heavy Vehicle Propulsion System Materials Program Semiannual Progress Report for October 1999 Through March 2000
The purpose of the Heavy Vehicle Propulsion System Materials Program is the development of materials: ceramics, intermetallics, metal alloys, and metal and ceramic coatings, to support the dieselization of class 1-3 trucks to realize a 35% fuel-economy improvement over current gasoline-fueled trucks and to support commercialization of fuel-flexible LE-55 low-emissions, high-efficiency diesel engines for class 7-8 trucks. The Office of Transportation Technologies, Office of Heavy Vehicle Technologies (OTT OHVT) has an active program to develop the technology for advanced LE-55 diesel engines with 55% efficiency and low emissions levels of 2.0 g/bhp-h NOx and 0.05 g/bhp-h particulates. The goal is also for the LE-55 engine to run on natural gas with efficiency approaching that of diesel fuel. The LE-55 program is being completed in FY 1997 and, after approximately 10 years of effort, has largely met the program goals of 55% efficiency and low emissions. However, the commercialization of the LE-55 technology requires more durable materials than those that have been used to demonstrate the goals. Heavy Vehicle Propulsion System Materials will, in concert with the heavy duty diesel engine companies, develop the durable materials required to commercialize the LE-55 technologies. OTT OHVT also recognizes a significant opportunity for reduction …
Date:
December 7, 2000
Creator:
Johnson, D. R.
Object Type:
Report
System:
The UNT Digital Library
Particle Tracking Model and Abstraction of Transport Processes
The purpose of the transport methodology and component analysis is to provide the numerical methods for simulating radionuclide transport and model setup for transport in the unsaturated zone (UZ) site-scale model. The particle-tracking method of simulating radionuclide transport is incorporated into the FEHM computer code and the resulting changes in the FEHM code are to be submitted to the software configuration management system. This Analysis and Model Report (AMR) outlines the assumptions, design, and testing of a model for calculating radionuclide transport in the unsaturated zone at Yucca Mountain. In addition, methods for determining colloid-facilitated transport parameters are outlined for use in the Total System Performance Assessment (TSPA) analyses. Concurrently, process-level flow model calculations are being carrier out in a PMR for the unsaturated zone. The computer code TOUGH2 is being used to generate three-dimensional, dual-permeability flow fields, that are supplied to the Performance Assessment group for subsequent transport simulations. These flow fields are converted to input files compatible with the FEHM code, which for this application simulates radionuclide transport using the particle-tracking algorithm outlined in this AMR. Therefore, this AMR establishes the numerical method and demonstrates the use of the model, but the specific breakthrough curves presented do not …
Date:
April 7, 2000
Creator:
Robinson, B.
Object Type:
Report
System:
The UNT Digital Library
Meeting Summary, Credit Trading Work Group
OAK-B135 Credit Trading Work Group Meeting Summary. The purpose of the meeting is to: (1) Provide an opportunity for NWCC Work Group Members, NWCC Members, and invited expert participants to hear an overview of the draft NWCC Credit Trading Report and to critically review and discuss the report's recommendations and principles. (2) Hear presentations from several perspectives of other experts on credit trading which provide: (a) a brief summary of credit trading activities they are involved in, and (b) critical responses to the NWCC draft report. (3) Identify how the report can be improved at the big picture level. Attempt to resolve issues or concerns if necessary. (4) Discuss the recommendations and credit trading principles in detail and attempt to reach consensus on these sections for presentation to the NWCC. (5) Discuss if any of the outreach and communication recommendations in the report should be conducted by the NWCC.
Date:
December 7, 2000
Creator:
Bryan, Kevin
Object Type:
Report
System:
The UNT Digital Library
Debris Characterization Diagnostic for the National Ignition Facility
Generation of debris from targets and by x-ray ablation of surrounding materials will be a matter of concern for experimenters and the operations staff at the National Ignition Facility (NIF). Target chamber and final optics protection, for example debris shield damage, and efficient facility operation drive the interest for the NIF staff. Experimenters are primarily concerned with diagnostic survivability, separation of mechanical versus radiation induced test object response in the case of effects tests, and radiation transport through the debris field when the net radiation output is used to benchmark computer codes. In addition, radiochemical analysis of activated capsule debris during ignition shots can provide a measure of the ablator. Conceptual design of the Debris Monitor and Rad-Chem Station, one of the NIF core diagnostics, is presented. Methods of debris collection, particle size and mass analysis, impulse measurement, and radiochemical analysis are given. A description of recent experiments involving debris collection and impulse measurement on the OMEGA and Pharos lasers is also provided.
Date:
June 7, 2000
Creator:
Miller, M. C.; Celeste, J. R.; Suter, L. J.; Tobin, M. T.; Grun, J.; Davis, J. F. et al.
Object Type:
Article
System:
The UNT Digital Library
Laboratory Astrophysics using a Spare XRS Microcalorimeter
The XRS instrument on Astro-E is a fully self-contained microcalorimeter x-ray instrument capable of acquiring, optimally filtering, and characterizing events for 32 independent pixels. We have recently integrated a full engineering model XRS detector system into a laboratory cryostat for use on the electron beam ion trap (EBIT) at Lawrence Livermore National Laboratory. The detector system contains a microcalorimeter array with 32 instrumented pixels heat sunk to 60 mK using an adiabatic demagnetization refrigerator. The instrument has a composite resolution of 8 eV at 1 keV and 11 eV at 6 keV with a minimum of 98% quantum efficiency and a total collecting area of 13 mm{sup 2}. This will allow high spectral resolution, broadband observations of plasmas with known ionization states that are produced in the EBIT experiment. Unique to our instrument are exceptionally well characterized 1000 Angstrom thick aluminum on polyimide infrared blocking filters. The detailed transmission function including the edge tine structure of these filters has been measured in our laboratory using a variable spaced grating spectrometer. This will allow the instrument to perform the first broadband absolute flux measurements with the EBIT instrument. The instrument performance as well as the results of preliminary measurements of Fe …
Date:
August 7, 2000
Creator:
Porter, F. S.; Audley, M. D.; Beiersdorfer, P.; Boyce, K. R.; Brekosky, R. P.; Brown, G. V. et al.
Object Type:
Article
System:
The UNT Digital Library
Replacement Saltwell Pumping System Document Bibliography
This document bibliography is prepared to identify engineering documentation developed during the design of the Replacement Saltwell Pumping System. The bibliography includes all engineering supporting documents and correspondence prepared prior to the deployment of the system in the field. All documents referenced are available electronically through the Records Management Information System (RMIS). Major components of the Replacement Saltwell Pumping System include the Sundyne Canned Motor Pump, the Water Filter Skid, the Injection Water Skid and the Backflow Preventer Assembly. Drawing H-14-104498 provides an index of drawings (fabrication details, P&IDs, etc.) prepared to support development of the Replacement Saltwell Pumping System. Specific information pertaining to new equipment can be found in Certified Vendor Information (CVI) File 50124. This CVI file has been established specifically for new equipment associated with the Replacement Saltwell Pumping System.
Date:
December 7, 2000
Creator:
BELLOMY, J.R.
Object Type:
Report
System:
The UNT Digital Library
300 Area Liquid Effluent Facilities (LEF) Authorization Envelope
The purpose of this document is to establish the facility Authorization Envelope (AE) for the 300 Liquid Effluent Facilities (LEP )Project and identify the requirements related to the maintenance of the AE as Specified in HNF-PRO-2701, Authorization Envelope and Authorization Agreement. The 300 LEF Project consists of two separate facilities operating under one management organization. They are the 310 Facility and the 340 Facility. The AE documents the limits of operations for all 300 LEF Project activities.
Date:
April 7, 2000
Creator:
WRIGHT, E.J. & STORDEUR, R.T.
Object Type:
Report
System:
The UNT Digital Library
The National Ignition Facility Project: An Update
The National Ignition Facility (NIT) consists of 192 forty-centimeter-square laser beams and a 10-m-diameter target chamber. Physical construction began in 1997. The Laser and Target Area Building and the Optics Assembly Building were the first major construction activities, and despite several unforeseen obstacles, the buildings are now 92% complete and have been done on time and within cost. Prototype component development and testing has proceeded in parallel. Optics vendors have installed full-scale production lines and have done prototype production runs. The assembly and integration of the beam path infrastructure has been reconsidered and a new approach has been developed. This paper will discuss the status of the NIF project and the plans for completion. It will also include summary information on Laser MegaJoule (LMJ) provided by M. Andre, LMJ Project Director.
Date:
December 7, 2000
Creator:
Hogan, W.J.; Moses, E.; Warner, B.; Sorem, M.; Soures, J. & Hands, J.
Object Type:
Article
System:
The UNT Digital Library