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[Deposit Summary and a Letter to Michael Milliken]

Description: Deposit summary of $45.00 made on May 9, 2001, and a letter to Michael Milliken from Daniel C. Graney, membership chair of the San Antonio Club regarding membership dues.
Date: May 9, 2001
Partner: UNT Libraries Special Collections
open access

Reconciliation Report

Description: Reconciliation report with an ending account balance of $425.00 reconciled for the period ending on May 9, 2001.
Date: May 9, 2001
Partner: UNT Libraries Special Collections
open access

Three-Dimensional Analysis of Voids in AM60B Magnesium Tensile Bars Using Computed Tomography Imagery

Description: In an effort to increase automobile fuel efficiency as well as decrease the output of harmful greenhouse gases, the automotive industry has recently shown increased interest in cast light metals such as magnesium alloys in an effort to increase weight savings. Currently several magnesium alloys such as AZ91 and AM60B are being used in structural applications for automobiles. However, these magnesium alloys are not as well characterized as other commonly used structural metals such as aluminum. … more
Date: May 1, 2001
Creator: Waters, A M
Partner: UNT Libraries Government Documents Department
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Comparison of Machining with Long-Pulse Green and Ultrashort Pulse Lasers

Description: (1) LLNL measured the material removal rate from stainless steel, silicon carbide, rhenium, N5, hastalloy X, and titanium as a function of pulse fluence at a wavelength of 810 nm for pulse durations of 150 fs, 1.5 ps, 20 ps, and 500 ps. The spot size of the beam used was 150 microns in diameter and the nominal material thickness was 1-2 mm. These experiments were performed on the existing 1 kHz laser system. Holes of different penetration depths were obtained to ascertain change in removal rate… more
Date: May 18, 2001
Creator: Wynne, A E & Stuart, B C
Partner: UNT Libraries Government Documents Department
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Why Model-Based Engineering and Manufacturing Makes Sense for the Plants and Laboratories of the Nuclear Weapon Complex

Description: The purpose of this White Paper is to outline the benefits we expect to receive from Model-Based Engineering and Manufacturing (MBE/M) for the design, analysis, fabrication, and assembly of nuclear weapons for upcoming Life Extension Programs (LEPs). Industry experiences with model-based approaches and the NNSA/DP investments and experiences, discussed in this paper, indicate that model-based methods can achieve reliable refurbished weapons for the stockpile with less cost and time. In this the… more
Date: May 15, 2001
Creator: Franklin, K. W.; Howell, L. N., Jr.; Lewis, D. G.; Neugebauer, C. A.; O'Brien, D. W. & Schilling, S. A.
Partner: UNT Libraries Government Documents Department
open access

25 Can Verification Report for the LLNL Plutonium Packaging System (PuPS)

Description: This document reports the results of the 25 Can Verification Run. The 25 Can Verification Run was performed as outlined in Section 1.d of SRS Acceptance Criteria (Reference 1). The run was performed over the period of February 16 to the 28, 2001. Each of these cans was welded with a dummy Inner Can containing about 5 kg of surrogate material. The cans were then analyzed using radiography and metallography of samples taken at four locations of the weld. The radiographs were examined for porosity… more
Date: May 7, 2001
Creator: Riley, D C & Dodson, K E
Partner: UNT Libraries Government Documents Department
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A Report of the Joint Development of a Prototype Communications Link to Share Nuclear Accident Dispersion and Dose Assessment Modeling Products Between JAERI/WSPEEDI and LLNL/NARAC

Description: In June of 1997, under an umbrella Memorandum of Understanding between the Japan Atomic Energy Research Institute (JAERI) and the U.S. Department of Energy (US/DOE) concerning matters of nuclear research and development, a Specific Memorandum of Agreement (SMA) entitled ''A Collaborative Programme of Development of a Prototype Communication Link to Share Atmospheric Dispersion and Dose Assessment Modelling Products'' was signed. This SMA formalized an informal collaborative exchange between the… more
Date: May 1, 2001
Creator: Sullivan, Thomas J.; Belles, Richard D.; Ellis, James S.; Chino, Masamichi & Nagai, Haruyasu
Partner: UNT Libraries Government Documents Department
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Workshop on the Increased Use of Ethanol and Alkylates in Automotive Fuels in California

Description: The goals of the Workshop are to: (1) Review the existing state of knowledge on (a) physicochemical properties, multi-media transport and fate, exposure mechanisms and (b) release scenarios associated with the production, distribution, and use of ethanol and alkylates in gasoline; (2) Identify key regulatory, environmental, and resource management issues and knowledge gaps associated with anticipated changes in gasoline formulation in California; and (3) Develop a roadmap for addressing issues/… more
Date: May 4, 2001
Creator: Rice, D W
Partner: UNT Libraries Government Documents Department
open access

2000 Engineering Annual Summary

Description: No Description Available.
Date: May 24, 2001
Creator: Gerich, C
Partner: UNT Libraries Government Documents Department
open access

Simulating Marvel with the Stun Code

Description: MARVEL, a nuclear-driven shock-tube experiment, consisted of a 2.2 kiloton nuclear explosive detonated 176 meters underground at one end of a 122-meter long, 1-meter diameter horizontal tunnel. Vaporization of material in the immediate vicinity of the explosive provided the source of high-energy driver gas. The driven gas was the ambient atmospheric air in the tunnel. The event was staged as an experimental and calculational study of the time dependent .ow of energy in the tunnel and surroundin… more
Date: May 23, 2001
Creator: Glenn, L A
Partner: UNT Libraries Government Documents Department
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March 2001 Working Group Meeting on Heavy Vehicle Aerodynamic Drag: Presentations and Summary of Comments and Conclusions

Description: A Working Group Meeting on Heavy Vehicle Aerodynamic Drag was held at Lawrence Livermore National Laboratory on March 28 and 29, 2001. The purpose of the meeting was to present and discuss technical details on the experimental and computational work in progress and future project plans. Due to the large participation from industry and other research organizations, a large portion of the meeting (all of the first day and part of the second day) was devoted to the presentation and discussion of i… more
Date: May 14, 2001
Creator: Greenman, R.; Dunn, T.; Owens, J.; Laskowski, G.; Flowers, D.; Browand, F. et al.
Partner: UNT Libraries Government Documents Department
open access

A Note on Differencing the Viscous Dissipation Terms for a Newtonian Fluid

Description: We compare two finite difference approximations for the viscous dissipation terms in the energy equation. We focus on the strain produced by the every-other-zone (e.g., hour-glass and herringbone) modes in the velocity field. Care must be exercised to produce a viscous dissipation rate consistent with the viscous forces. The examples given are for a rectangular staggered grid, but similar considerations apply to other types of grids. Also, these considerations apply to certain algebraic eddy vi… more
Date: May 30, 2001
Creator: Cloutman, L
Partner: UNT Libraries Government Documents Department
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Methods for Addressing Uncertainty and Variability to Characterize Potential Health Risk from Trichloroethylene-Contaminated Ground Water at Beale Air Force Base in California:Integration of Uncertainty and Variability in Pharmacokinetics and Dose-Response

Description: Traditional estimates of health risk are typically inflated, particularly if cancer is the dominant endpoint and there is fundamental uncertainty as to mechanism(s) of action. Risk is more realistically characterized if it accounts for joint uncertainty and interindividual variability within a systematic probabilistic framework to integrate the joint effects on risk of distributed parameters of all (linear as well as nonlinear) risk-extrapolation models involved. Such a framework was used to ch… more
Date: May 24, 2001
Creator: Bogen, K T
Partner: UNT Libraries Government Documents Department
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Synthesis and Properties of a New Explosive, 4-Amino-3,5-Dinitro-lH-Pyrazole (LLM-116)

Description: A novel synthesis of the title compound was achieved by direct amination using Vicarious Nucleophilic Substitution (VNS) methodology. Reaction of 1,1,1-trimethylhydrazinium iodide with 3,5-dinitropyrazole in DMSO produces 4-amino-3,s-dinitro-1H-pyrazole as a 1:1 crystal solvate with DMSO. Recrystallization from water yields the monohydrated crystal. Recrystallization of the monohydrate from butyl acetate yields the compound in pure form. Crystallographic data and results of small-scale safety t… more
Date: May 22, 2001
Creator: Schmidt, R. D.; Lee, G. S.; Pagoria, P. F.; Mitchell, A. R. & Gilardi, R.
Partner: UNT Libraries Government Documents Department
open access

AMRH and High Energy Reinicke Problem

Description: The authors describe AMRH results on a version of the Reinicke problem specified by the V and V group of LLNL's A-Div. The simulation models a point explosion with heat conduction. The problem specification requires that the heat conduction be replaced with diffusive radiation transport. The matter and radiation energy densities are tightly coupled.
Date: May 14, 2001
Creator: Shestakov, A I & Greenough, J A
Partner: UNT Libraries Government Documents Department
open access

An Assessment of the Current Day Impact of Various Materials Associated with the U.S. Nuclear Test Program in the Marshall Island

Description: Different stable elements, and some natural and man-made radionuclides, were used as tracers or associated in other ways with nuclear devices that were detonated at Bikini and Enewetak Atolls as part of the U.S. nuclear testing program from 1946 through 1958. The question has been raised whether any of these materials dispersed by the explosions could be of sufficient concentration in either the marine environment or on the coral islands to be of a health concern to people living, or planning t… more
Date: May 1, 2001
Creator: Robison, W L; Noshkin, V E; Hamilton, T F; Conrado, C L & Bogen, K T
Partner: UNT Libraries Government Documents Department
open access

Modeling the use of Self-Focused Beams to Overcome the Effects of Target Emissions in Advanced Hydrodynamic Radiography Machines

Description: In the machines being developed for advanced hydrodynamic radiography, an electron beam of several kA current and 20 Mev particle energy is focused to less than a millimeter diameter onto a high atomic number target to produce bremstrahlung X-rays. Several pulses occur during a period of about 2 {micro}s. A plasma plume is predicted to move upstream from the target . If the final focus onto the target is in vacuum, then the plasma from an early pulse may neutralize the self-electric field of a … more
Date: May 1, 2001
Creator: Lauer, E
Partner: UNT Libraries Government Documents Department
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Hydrogen Induced Cracking in Titanium Drip Shield of High-Level Waste Repository

Description: Both qualitative and quantitative assessments have been conducted to evaluate the effects of hydrogen induced cracking on the drip shield. The basic premise of the assessments is that failure will occur once the hydrogen content exceeds a certain limit or critical value, H{sub c}. Potential mechanisms for hydrogen absorption in the drip shield have been identified to be general passive corrosion and galvanic couple with steel components. Both qualitative and quantitative evaluations indicated t… more
Date: May 30, 2001
Creator: Lu, S C
Partner: UNT Libraries Government Documents Department
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Addendum to the 200 West Area Dust Mitigation Strategies: Treatment of the Dust Source Area

Description: This document describes the source area for the blowing dust encountered in the southwest portion of the 200 West Area. Strategies for short-term stabilization of the entire source area, short-term stabilization of a portion of the source area based on levels of respirable dust, and long-term stabilization of the entire source area are provided. An separate evaluation of aerosolized water as a means of reducing airborne dust is also provided.
Date: May 14, 2001
Creator: Becker, James M. & Sackschewsky, Michael R.
Partner: UNT Libraries Government Documents Department
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Evaluation of the Hydrologic Source Term from Underground Nuclear Tests on Pahute Mesa at the Nevada Test Site: The CHESHIRE Test

Description: The objectives of this report are to develop, summarize, and interpret a series of detailed unclassified simulations that forecast the nature and extent of radionuclide release and near-field migration in groundwater away from the CHESHIRE underground nuclear test at Pahute Mesa at the NTS over 1000 yrs. Collectively, these results are called the CHESHIRE Hydrologic Source Term (HST). The CHESHIRE underground nuclear test was one of 76 underground nuclear tests that were fired below or within 1… more
Date: May 1, 2001
Creator: Pawloski, G. A.; Tompson, A. F. B.; Carle, S. F.; Bourcier, W. L.; Bruton, C. J.; Daniels, J. I. et al.
Partner: UNT Libraries Government Documents Department
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Identification of Process Hazards and Accident Scenarios for Site 300 B-Division Firing Areas, Lawrence Livermore National Laboratory

Description: This report describes a hazard and accident analysis conducted for Site 300 operations to support update of the ''Site 300 B-Division Firing Areas Safety Analysis Report'' (SAR) [LLNL 1997]. A significant change since the previous SAR is the construction and the new Contained Firing Facility (CFF). Therefore, this hazard and accident analysis focused on the hazards associated with bunker operations to ensure that the hazards at CFF are properly characterized in the updated SAR. Hazard tables we… more
Date: May 4, 2001
Creator: Lambert, H & Johnson, G
Partner: UNT Libraries Government Documents Department
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Vadose Zone Transport Field Study: FY 2002 Test Plan

Description: The primary objective of the Vadose Zone Transport Field Study is to obtain hydrologic, geophysical, and geochemical data from controlled field studies to reduce the uncertainty in vadose-zone conceptual models and to facilitate the calibration of numerical models for water flow and contaminant transport through Hanford's heterogeneous vadose zone. A secondary objective is to evaluate advanced, cost-effective characterization methods with the potential to assess changing conditions in the vados… more
Date: May 1, 2001
Creator: Ward, Anderson L. & Gee, Glendon W.
Partner: UNT Libraries Government Documents Department
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Laboratory Directed Research and Development FY 2000 Annual Report

Description: This Annual Report provides an overview of the FY2000 Laboratory Directed Research and Development (LDRD) Program at Lawrence Livermore National Laboratory (LLNL) and presents a summary of the results achieved by each project during the year.
Date: May 24, 2001
Creator: Al-Ayat, R
Partner: UNT Libraries Government Documents Department
open access

The Cleaning of Aluminum Frame Assembly Units

Description: The Brulin immersion and the precision cleaning experiments have shown that neither the Brulin solution nor the precision cleaning in AstroPak causes the smut formation on aluminum surfaces. The acid-bath cleaning in GTC is the primary source of the smut formation. The current GTC acid formulation etches the aluminum matrix quite aggressively, but does not appear to appreciably attack the Si particles. Therefore, this acid-bath cleaning will leave the cast-aluminum part surfaces with many protr… more
Date: May 16, 2001
Creator: Shen, T H
Partner: UNT Libraries Government Documents Department
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