States

A probabilistic risk assessment of the LLNL Plutonium Facility`s evaluation basis fire operational accident. Revision 1 (open access)

A probabilistic risk assessment of the LLNL Plutonium Facility`s evaluation basis fire operational accident. Revision 1

The Lawrence Livermore National Laboratory (LLNL) Plutonium Facility conducts numerous programmatic activities involving plutonium to include device fabrication, development of improved and/or unique fabrication techniques, metallurgy research, and laser isotope separation. A Safety Analysis Report (SAR) for the building 332 Plutonium Facility was completed in July 1994 to address operational safety and acceptable risk to employees, the public, government property, and the environmental. This paper outlines the PRA analysis of the Evaluation Basis Fire (EBF) operational accident. The EBF postulates the worst-case programmatic impact event for the Plutonium Facility.
Date: February 27, 1995
Creator: Brumburgh, G.P.
Object Type: Article
System: The UNT Digital Library
Tank 241-BY-103 Tank Characterization Plan. Revision 1 (open access)

Tank 241-BY-103 Tank Characterization Plan. Revision 1

This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations and WHC 222-S Laboratory. The scope of this plan is to provide guidance for the sampling and analysis of samples for tank 241-BY-103.
Date: February 27, 1995
Creator: Schreiber, R. D.
Object Type: Report
System: The UNT Digital Library
Test Plan for Westinghouse Hanford Company`s Hedgehog Shielded Container, Docket 94-39-7A, Type A Container (open access)

Test Plan for Westinghouse Hanford Company`s Hedgehog Shielded Container, Docket 94-39-7A, Type A Container

This report documents the US Department of Transportation Specification 7A Type A (DOT-7A) compliance testing to be followed for qualification of the Westinghouse Hanford Company`s Hedgehog Shielded Container for use as a Type A packaging. The packaging configurations being tested are intended for liquids and solids, and for air transportation.
Date: February 27, 1995
Creator: Kelly, D. L.
Object Type: Report
System: The UNT Digital Library
Startup and Operation of a Metal Hydride Based Isotope Separation Process (open access)

Startup and Operation of a Metal Hydride Based Isotope Separation Process

Production scale separation of tritium from other hydrogen isotopes at the Savannah River Site (SRS) in Aiken, SC, has been accomplished by several methods. These methods include thermal diffusion (1957--1986), fractional absorption (1964--1968), and cryogenic distillation (1967-present). Most recently, the Thermal Cycling Absorption Process (TCAP), a metal hydride based hydrogen isotope separation system, began production in the Replacement Tritium Facility (RTF) on April 9, 1994. TCAP has been in development at the Savannah River Technology Center since 1980. The production startup of this semi-continuous gas chromatographic separation process is a significant accomplishment for the Savannah River Site and was achieved after years of design, development, and testing.
Date: February 27, 1995
Creator: Scogin, J. H. & Poore, A. S.
Object Type: Article
System: The UNT Digital Library
Tank 241-U-103 headspace gas and vapor characterization results for samples collected in February 1995 (open access)

Tank 241-U-103 headspace gas and vapor characterization results for samples collected in February 1995

Significant changes have been made to all of the original vapor characterization reports. This report documents specific headspace gas and vapor characterization results for all vapor sampling events to date. In addition, changes have been made to the original vapor reports to qualify the data based on quality assurance issues associated with the performing laboratories.
Date: September 27, 1995
Creator: Huckaby, J. L. & Bratzel, D.R.
Object Type: Report
System: The UNT Digital Library
The contact-temperature ignition (CTI) criteria for propagating chemical reactions including the effect of moisture and application to Hanford waste (open access)

The contact-temperature ignition (CTI) criteria for propagating chemical reactions including the effect of moisture and application to Hanford waste

To assure the continued absence of uncontrolled condensed-phase chemical reactions in connection with the Hanford waste materials, efforts have been underway including both theoretical and experimental investigations to clarify the requirements for such reactions. This document defines the differences and requirements for homogeneous runaway and propagating chemical reactions incuding a discussion of general contact-temperature ignition (CTI) condition for propagating reactions that include the effect of moisture. The CTI condition implies that the contact temperature or interface temperature between reacted and unreacted materials must exceed the ignition temperature and is compared to experimental data including both synthetic ferrocyanide and surrogate organic materials. In all cases, the occurrences of ignition accompanied by self-propagating reactions are consistent with the theoretical anticipations of the CTI condition.
Date: September 27, 1995
Creator: Cash, R.J.
Object Type: Report
System: The UNT Digital Library
Interdisciplinary study of reservoir compartments. Quarterly technical progress report, October 1, 1994--December 31, 1994 (open access)

Interdisciplinary study of reservoir compartments. Quarterly technical progress report, October 1, 1994--December 31, 1994

This DOE research project was established to document the integrated team approach for solving reservoir engineering problems. A field study integrating the disciplines of geology, geophysics, and petroleum engineering will be the mechanism for documenting the integrated approach. This is an area of keen interest to the oil and gas industry. The goal will be to provide tools and approaches that can be used to detect reservoir compartments, reach a better reserve estimate, and improve profits early in the life of a field. Brief summaries are provided for the following six tasks: reservoir selection and data gathering; outcrop/core/log analysis/and correlations; internal architecture description; seismic analysis; detailed reservoir engineering evaluation; and permeability experimental work. Where appropriate reports by the research professors and the research assistants are included in the appendix.
Date: January 27, 1995
Creator: Van Kirk, C.W.
Object Type: Report
System: The UNT Digital Library
Letter report: Ari Patrinos -- ARM summary (open access)

Letter report: Ari Patrinos -- ARM summary

This letter report provides a summary of the authors` views on ARM. ARM is a highly focused program designed to improve understanding of the transport of infrared and solar radiation through the atmosphere. The program pays particular attention to the interaction of radiation with the three phases of water. The goals of ARM are usually articulated in terms of improvements in climate models. The authors agree that ARM can indeed make significant contributions to the understanding of climate change. In addition they believe that the results of the program will have wide applicability to a broad range of problems, including more accurate short-term and seasonal weather forecasting.
Date: July 27, 1995
Creator: MacDonald, G.J.; Ruderman, M.A. & Treiman, S.B.
Object Type: Report
System: The UNT Digital Library
The gene identification problem: An overview for developers (open access)

The gene identification problem: An overview for developers

The gene identification problem is the problem of interpreting nucleotide sequences by computer, in order to provide tentative annotation on the location, structure, and functional class of protein-coding genes. This problem is of self-evident importance, and is far from being fully solved, particularly for higher eukaryotes, Thus it is not surprising that the number of algorithm and software developers working in this area is rapidly increasing. The present paper is an overview of the field, with an emphasis on eukaryotes, for such developers.
Date: March 27, 1995
Creator: Fickett, J.W.
Object Type: Article
System: The UNT Digital Library
A comparison of interface tracking methods (open access)

A comparison of interface tracking methods

In this Paper we provide a direct comparison of several important algorithms designed to track fluid interfaces. In the process we propose improved criteria by which these methods are to be judged. We compare and contrast the behavior of the following interface tracking methods: high order monotone capturing schemes, level set methods, volume-of-fluid (VOF) methods, and particle-based (particle-in-cell, or PIC) methods. We compare these methods by first applying a set of standard test problems, then by applying a new set of enhanced problems designed to expose the limitations and weaknesses of each method. We find that the properties of these methods are not adequately assessed until they axe tested with flows having spatial and temporal vorticity gradients. Our results indicate that the particle-based methods are easily the most accurate of those tested. Their practical use, however, is often hampered by their memory and CPU requirements. Particle-based methods employing particles only along interfaces also have difficulty dealing with gross topology changes. Full PIC methods, on the other hand, do not in general have topology restrictions. Following the particle-based methods are VOF volume tracking methods, which are reasonably accurate, physically based, robust, low in cost, and relatively easy to implement. Recent enhancements …
Date: March 27, 1995
Creator: Kothe, D.B. & Rider, W. J.
Object Type: Article
System: The UNT Digital Library
Shielded Cells D&D and Dismantlement System Requirements (open access)

Shielded Cells D&D and Dismantlement System Requirements

This document describes the basis for the development of the System for Highly Radioactive Equipment Dismantlement or SHRED. It is the result of a thorough investigation into current and past dismantlement practices at shielded cell facilities around the DOE complex. This information has been used to formulate the development requirements for the SHRED.
Date: March 27, 1995
Creator: Witherspoon, R.L.
Object Type: Report
System: The UNT Digital Library
Petroleum supply monthly, February 1995, with data for December 1994 (open access)

Petroleum supply monthly, February 1995, with data for December 1994

Data presented in the Petroleum Supply Monthly (PSM) describe the supply and disposition of petroleum products in the US and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the US (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics. The tables and figures in the Summary Statistics section of the PSM present a time series of selected petroleum data on a US level. The detailed Statistics tables of the PSM present statistics for the most current month available as well as year-to-date. In most cases, the statistics are presented for several geographic areas--the US (50 States and the District of Columbia), five PAD Districts, and 12 Refining Districts. 16 figs., 66 tabs.
Date: February 27, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Fire hazard analysis of the radioactive mixed waste trenchs (open access)

Fire hazard analysis of the radioactive mixed waste trenchs

This Fire Hazards Analysis (FHA) is intended to assess comprehensively the risk from fire associated with the disposal of low level radioactive mixed waste in trenches within the lined landfills, provided by Project W-025, designated Trench 31 and 34 of the Burial Ground 218-W-5. Elements within the FHA make recommendations for minimizing risk to workers, the public, and the environment from fire during the course of the operation`s activity. Transient flammables and combustibles present that support the operation`s activity are considered and included in the analysis. The graded FHA contains the following elements: description of construction, protection of essential safety class equipment, fire protection features, description of fire hazards, life safety considerations, critical process equipment, high value property, damage potential--maximum credible fire loss (MCFL) and maximum possible fire loss (MPFL), fire department/brigade response, recovery potential, potential for a toxic, biological and/or radiation incident due to a fire, emergency planning, security considerations related to fire protection, natural hazards (earthquake, flood, wind) impact on fire safety, and exposure fire potential, including the potential for fire spread between fire areas. Recommendations for limiting risk are made in the text of this report and printed in bold type. All recommendations are repeated in a …
Date: April 27, 1995
Creator: McDonald, K.M.
Object Type: Report
System: The UNT Digital Library
Engineer/Constructor Management Plan B-Plant Canyon Ventilation Upgrade Project W-059 (open access)

Engineer/Constructor Management Plan B-Plant Canyon Ventilation Upgrade Project W-059

This document provides the conceptual design for Project W-059, B Plant Canyon Ventilation Upgrade.
Date: April 27, 1995
Creator: Condron, J.D.
Object Type: Report
System: The UNT Digital Library
3D metal forming applications of ALE techniques (open access)

3D metal forming applications of ALE techniques

A three-dimensional arbitrary Lagrange-Eulerian (ALE) code is being developed for use as a general purpose tool for metal forming analyses. The focus of the effort is on the processes of forging, extrusion, casting and rolling. The ALE approach was chosen as an efficient way to deal with the large deformations and complicated flows associated with these processes. A prototype version of the software package, ALE3D, exists and is being applied to the enumerated processes. It is a finite element code which treats fluid and elastic-plastic response on an unstructured mesh. The prototype version includes heat transfer and the option of either implicit or explicit time integration of the dynamic equations. The status of the code is described. Several examples of application of the code to typical forming simulations are presented with discussions of the advantages and disadvantages of the ALE approach.
Date: January 27, 1995
Creator: Couch, R.; McCallen, R.; Otero, I. & Sharp, R.
Object Type: Article
System: The UNT Digital Library
Environmental Assessment of Oklahoma abandoned drilling and production sites and associated public education/outreach activities. Quarterly technical progress report, February 8, 1995--March 30, 1995. First quarter of 1995 (open access)

Environmental Assessment of Oklahoma abandoned drilling and production sites and associated public education/outreach activities. Quarterly technical progress report, February 8, 1995--March 30, 1995. First quarter of 1995

The purpose of this project was to conduct environmental assessments of abandoned oil and gas drilling sites where no responsible owner can be found and transfer environmental technology to oil and gas operators; and provide a comprehensive public education program concerned with the oil and gas industries.
Date: April 27, 1995
Creator: Terry, M.
Object Type: Report
System: The UNT Digital Library
Progress report on the evaluation of porous cathode for the electrochemical reduction of nitrates and nitrites in liquid wastes (open access)

Progress report on the evaluation of porous cathode for the electrochemical reduction of nitrates and nitrites in liquid wastes

This report describes the experimental and modeling work performed to evaluate porous cathodes for the electrochemical reduction of nitrites in liquid wastes. The experiments were done using the MP{dagger} cell with two different porous cathodes: nickel foam and TySAR{trademark}SB{double_dagger}. The experimental results are compared with each other and to those obtained with a planar nickel cathode. The results show that the ammonia production reaction is the dominant cathodic reaction ({approximately}80% efficiency) for all three electrodes. The temperature range used in this study was 29-37 {circ}C while the catholyte feed was either 0.6M NaNO{sub 2} or 1.9M NaNO{sub 3}, both supported by a 1.33 M NaOH solution. All experiments used a constant current density of 0.25 A/cm{sup 2}. The experimental results suggest that the porous nickel electrode at lower temperatures ({approximately}31{circ}C) is the most efficient of the three electrodes for the reduction of nitrates and nitrites. The porous nickel electrode exhibited the highest conversion of nitrates and nitrites, and the lowest overpotential for a given current density. The partial current fractions at known catholyte concentrations were used to extract the exchange-current densities for the five cathodic reactions. Using these kinetic parameters, dynamic simulations of the four hour experiments were performed. Agreement …
Date: December 27, 1995
Creator: Hobbs, D. T.; Jha, K.; Weidner, J. W. & White, R. E.
Object Type: Report
System: The UNT Digital Library
Gamma Ray Burst Optical Counterpart Search Experiment (GROCSE) (open access)

Gamma Ray Burst Optical Counterpart Search Experiment (GROCSE)

GROCSE (Gamma-Ray Optical Counterpart Search Experiments) is a system of automated telescopes that search for simultaneous optical activity associated with gamma ray bursts in response to real-time burst notifications provided by the BATSE/BACODINE network. The first generation system, GROCSE 1, is sensitive down to Mv {approximately} 8.5 and requires an average of 12 seconds to obtain the first images of the gamma ray burst error box defined by the BACODINE trigger. The collaboration is now constructing a second generation system which has a 4 second slewing time and can reach Mv {approximately} 14 with a 5 second exposure. GROCSE 2 consists of 4 cameras on a single mount. Each camera views the night sky through a commercial Canon lens (f/1.8, focal length 200 mm) and utilizes a 2K x 2K Loral CCD. Light weight and low noise custom readout electronics were designed and fabricated for these CCDs. The total field of view of the 4 cameras is 17.6 x 17.6 {degree}. GROCSE II will be operated by the end of 1995. In this paper, the authors present an overview of the GROCSE system and the results of measurements with a GROCSE 2 prototype unit.
Date: October 27, 1995
Creator: Park, Hye-Sook; Ables, Elden; Bionta, Richard M.; Ott, Linda; Parker, Eric; Akerlof, Carl et al.
Object Type: Article
System: The UNT Digital Library
Results from GROCSE I: A real-time search for gamma ray burst optical counterparts (open access)

Results from GROCSE I: A real-time search for gamma ray burst optical counterparts

The GROCSE I experiment (Gamma-Ray Optical Counterpart Search Experiment) is a rapid slewing wide field of view optical telescope at Lawrence Livermore National Laboratory which responds to triggers from the BATSE GRB data telemetry stream that have been processed and distributed by the BACODINE network. GROCSE 1 has been in continuous automated operation since January 1994. As of October 1995, sky images for 22 GRB triggers have been recorded, in some cases while the burst was still emitting gamma rays. The preliminary analysis of eight of these events are presented here. No optical counterparts have yet been detected. Limits for optical emission are given.
Date: October 27, 1995
Creator: Lee, B.; Akerlof, C. & Ables, E.
Object Type: Article
System: The UNT Digital Library
Radcalc for Windows. Volume 2: Technical manual (open access)

Radcalc for Windows. Volume 2: Technical manual

Radcalc for Windows is a user-friendly menu-driven Windows-compatible software program with applications in the transportation of radioactive materials. It calculates the radiolytic generation of hydrogen gas in the matrix of low-level and high-level radioactive waste using NRC-accepted methodology. It computes the quantity of a radionuclide and its associated products for a given period of time. In addition, the code categorizes shipment quantities as radioactive, Type A or Type B, limited quantity, low specific activity, highway route controlled, and fissile excepted using DOT definitions and methodologies, as outlined in 49 CFR Subchapter C. The code has undergone extensive testing and validation. Volume I is a User`s Guide, and Volume II is the Technical Manual for Radcalc for Windows
Date: September 27, 1995
Creator: Green, J.R.
Object Type: Report
System: The UNT Digital Library
Solute travel time in the vadose zone under RWMC at INEL (open access)

Solute travel time in the vadose zone under RWMC at INEL

Solute transport in the vadose zone under the Radioactive Waste Management Complex (RWMC) at the Idaho National Engineering Laboratory (INEL) is considered. The objective is to assess the relative importance of variables involved in modeling the travel time of a conservative solute from ground surface to water table. The vadose zone under RWMC is composed of several layers of basalt flows interceded with sediment layers. The thickness of the layers varies with location. The hydraulic properties also vary. The extents of the variations are large, with standard deviations exceed mean in some instances. The vadose zone is idealized as composed of horizontal layers. Solute transport starts at the ground surface and moves vertically downwards to the water table. The perceived process is one-dimensional. This study used VS2DT, a computer code developed by the US Geological Survey, for simulating solute transport in variably saturated porous media.
Date: February 27, 1995
Creator: Liou, J. C. P. & Tian, J.
Object Type: Report
System: The UNT Digital Library
An assessment of the viability of storing FFTF sodium in tank cars (open access)

An assessment of the viability of storing FFTF sodium in tank cars

Current FFTF Transition Project plans call for construction of a Sodium Storage Facility to store the plant sodium until it is processed either as product or waste. This report evaluates an alternative concept which would store the sodium in rail tank cars. It is concluded that utilizing a simple facility for offloading the FFTF sodium to standard industrial tank cars is not technically viable. Mitigation of potential radioactive sodium spills requires that the offload facility incorporate many of the features of the sodium storage facility. With these mitigation features incorporated, there is no significant cost or schedule advantage for the option of storing the FFTF sodium in tank cars when compared to the currently planned SSF. In addition, it is believed that the tank car option results in higher risk to project success because of unknowns associated with technical, regulatory, and public perception issues. It is therefore recommended that the project proceed with definitive design of the SSF.
Date: January 27, 1995
Creator: Young, M.W. & Burke, T.M.
Object Type: Report
System: The UNT Digital Library
Microbial Physiology of Subsurface Aquifers at SRS (open access)

Microbial Physiology of Subsurface Aquifers at SRS

This report describes a rapid screening procedure used to test the enzymatic capabilities of bacterial consortia in groundwater from well clusters P-24, P-28, and P-29.
Date: September 27, 1995
Creator: Fliermans, C.B.; House, J. & Franck, M.M.
Object Type: Report
System: The UNT Digital Library
Diverse topics in crystalline beams (open access)

Diverse topics in crystalline beams

Equations of motion are presented, appropriate to interacting charged particles of diverse charge and mass, subject to the external forces produced by various kinds of magnetic fields and radio-frequency (rf) electric fields in storage rings. These equations are employed in the molecular dynamics simulations to study the properties of crystalline beams. The two necessary conditions for the formation and maintenance of crystalline beams are summarized. The transition from ID to 2D, and from 2D to 3D is explored, and the scaling behavior of the heating rates is discussed especially in the high temperature limit. The effectiveness of various cooling techniques in achieving crystalline states has been investigated. Crystalline beams made of two different species of ions via sympathetic cooling are presented, as well as circulating ``crystal balls`` bunched in all directions by magnetic focusing and rf field. By numerically reconstructing the original experimental conditions of the NAP-M ring, it is found that only at extremely low beam intensities, outside of the range of the original measurement, proton particles can form occasionally-passing disks. The proposed New ASTRID ring is shown to be suitable for the formation and maintenance of crystalline beams of all dimensions.
Date: November 27, 1995
Creator: Wei, Jie; Draeseke, A.; Sessler, A. M. & Li, Xiao-Ping
Object Type: Article
System: The UNT Digital Library