241-AN Double Shell Tanks (DST) Integrity Assessment Report (open access)

241-AN Double Shell Tanks (DST) Integrity Assessment Report

This report presents the results of the integrity assessment of the 241-AN double-shell tank farm facility located in the 200 East Area of the Hanford Site. The assessment included the design evaluation and integrity examinations of the tanks and concluded that the facility is adequately designed, is compatible with the waste, and is fit for use. Recommendations including subsequent examinations, are made to ensure the continued safe operation of the tanks.
Date: September 21, 1999
Creator: Jensen, C. E.
Object Type: Report
System: The UNT Digital Library
241-AW Double Shell Tanks (DST) Integrity Assessment Report (open access)

241-AW Double Shell Tanks (DST) Integrity Assessment Report

This report presents the results of the integrity assessment of the 241-AW double-shell tank farm facility located in the 200 East Area of the Hanford Site. The assessment included the design evaluation and integrity examinations of the tanks and concluded that the facility is adequately designed, is compatible with the waste, and is fit for use. Recommendations including subsequent examinations, are made to ensure the continued safe operation of the tanks.
Date: September 21, 1999
Creator: Jensen, C. E.
Object Type: Report
System: The UNT Digital Library
241-AY Double Shell Tanks (DST) Integrity Assessment Report (open access)

241-AY Double Shell Tanks (DST) Integrity Assessment Report

This report presents the results of the integrity assessment of the 241-AY double-shell tank farm facility located in the 200 East Area of the Hanford Site. The assessment included the design evaluation and integrity examinations of the tanks and concluded that the facility is adequately designed, is compatible with the waste, and is fit for use. Recommendations including subsequent examinations. are made to ensure the continued safe operation of the tanks.
Date: September 21, 1999
Creator: JENSEN, C.E.
Object Type: Report
System: The UNT Digital Library
241-AZ Double Shell Tanks (DST) Integrity Assessment Report (open access)

241-AZ Double Shell Tanks (DST) Integrity Assessment Report

This report presents the results of the integrity assessment of the 241-A2 double-shell tank farm facility located in the 200 East Area of the Hanford Site. The assessment included the design evaluation and integrity examinations of the tanks and concluded that the facility is adequately designed, is compatible with the waste, and is fit for use. Recommendations including subsequent examinations, are made to ensure the continued safe operation of the tanks.
Date: September 21, 1999
Creator: JENSEN, C.E.
Object Type: Report
System: The UNT Digital Library
241-SY Double Shell Tanks (DST) Integrity Assessment Report (open access)

241-SY Double Shell Tanks (DST) Integrity Assessment Report

This report presents the results of the integrity assessment of the 241-SY double-shell tank farm facility located in the 200 West Area of the Hanford Site. The assessment included the design evaluation and integrity examinations of the tanks and concluded that the facility is adequately designed, is compatible with the waste, and is fit for use. Recommendations including subsequent examinations, are made to ensure the continued safe operation of the tanks.
Date: September 21, 1999
Creator: JENSEN, C.E.
Object Type: Report
System: The UNT Digital Library
Acceptance test procedure MICON software exhaust fan control modifications (open access)

Acceptance test procedure MICON software exhaust fan control modifications

This acceptance test verifies the MICON program changes for the new automatic transfer switch ATS-2 alarms, the Closed Loop Cooling isolator status, the CB-3 position alarm, and the alarms for the new emergency fan damper backup air compressor.
Date: May 21, 1999
Creator: SILVAN, G.R.
Object Type: Report
System: The UNT Digital Library
Addendum 1 to CSER 94-013 Criticality Evaluation of Loose Powder in the 232-Z Burning Hood [CANCELLED] (open access)

Addendum 1 to CSER 94-013 Criticality Evaluation of Loose Powder in the 232-Z Burning Hood [CANCELLED]

This CSER is no longer needed so it is being canceled
Date: September 21, 1999
Creator: Ramble, A. L.
Object Type: Report
System: The UNT Digital Library
Aerogel Fingerprint Media (open access)

Aerogel Fingerprint Media

A fingerprint medium which is made of an aerogel having a predetermined density. The fingerprint medium may have a midrange density for forming plates or may be crushed forming a powder. The fingerprint medium may further include at least one of a metal and metal oxide to enhance characteristics desirable in a fingerprint medium.
Date: September 21, 1999
Creator: Miller, Fred S. & Andresen, Brian D.
Object Type: Patent
System: The UNT Digital Library
Allocating resources and building confidence in public-safety decisions for nuclear waste sites (open access)

Allocating resources and building confidence in public-safety decisions for nuclear waste sites

There are three basic ways to protect the public from the hazards of exposure to radionuclides in nuclear waste: completely contain the waste; limit the rate at which radionuclides are released; and, once radionuclides are released, minimize their impact by reducing concentrations and retarding transport. A geologic repository system that implements all three provides maximum protection for the public: if one element fails, the others serve to protect. This is ''defense-in-depth.'' Demonstrating confidence in the ability of a designed system to provide the requisite safety to the public must rely on a combination of the following aspects relating to engineered and natural system components: 1 Knowledge or understanding of properties and processes 2 Uniformity of (or ability to understand or control) the range of variability associated with each component 3 Experience over time This paper proposes a tool based on defining a ''confidence region'' determined by these three essential aspects of confidence. The defense-in-depth decision-making tool described identifies the portion of the ultimate confidence region that is not well demonstrated and indicates where there is potential for changing a specific component's confidence region, therefore providing in-formation for decisions on emphasis--either for demonstrating performance or for focusing on further studies. The …
Date: May 21, 1999
Creator: Lew, K L & Wilder, D G
Object Type: Article
System: The UNT Digital Library
Aluminum-fly ash metal matrix composites for automotive parts. [Reports for October 1 to December 1998, and January 31 to March 31, 1999] (open access)

Aluminum-fly ash metal matrix composites for automotive parts. [Reports for October 1 to December 1998, and January 31 to March 31, 1999]

Some highlights are: (1) Material development, process development, and part validation are occurring simultaneously on a fast track schedule. (2) Prior project activity has resulted in a program emphasis on three components--manifolds, mounting brackets, and motor mounts; and three casting techniques--squeeze casting, pressure die casting, and sand casting. (3) With the project focus, it appears possible to offer manifolds and mounting brackets for automotive qualification testing on a schedule in line with the PNGV Year 2004 goal. (4) Through an iterative process of fly ash treatment, MMC ingot preparation, foundry process refinement, and parts production, both foundries (Eck Industries and Thompson Aluminum Casting Company) are addressing the pre-competitive issues of: (a) Optimum castability with fly ash shapes and sizes; (b) Best mechanical properties derived from fly ash shapes and sizes; (c) Effective fly ash classification processes; (d) Mechanical properties resulting from various casting processes and fly ash formulations. Eck and TAC continued experiments with batch ingot provided by both Eck and the University of Wisconsin at Milwaukee. Castings were run that contained varying amounts of fly ash and different size fractions. Components were cast using cenosphere material to ascertain the effects of squeeze casting and to determine whether the pressure …
Date: April 21, 1999
Creator: Weiss, David; Purgert, Robert; Rhudy, Richard & Rohatgi, P.
Object Type: Report
System: The UNT Digital Library
Analysis of Hazardous Biological Materials by MALDI Mass Spectrometry (open access)

Analysis of Hazardous Biological Materials by MALDI Mass Spectrometry

Analysis of Hazardous Biological Materials by MALDI Mass Spectrometry
Date: December 21, 1999
Creator: Wahl, Karen L.; Jarman, Kristin H.; Valentine, Nancy B.; Kingsley, Mark T.; Petersen, Catherine E.; Wunschel, Sharon C. et al.
Object Type: Report
System: The UNT Digital Library
Applications of RESRAD family of computer codes to sites contaminated with radioactive residues. (open access)

Applications of RESRAD family of computer codes to sites contaminated with radioactive residues.

The RESIL4D family of computer codes was developed to provide a scientifically defensible answer to the question ''How clean is clean?'' and to provide useful tools for evaluating human health risk at sites contaminated with radioactive residues. The RESRAD codes include (1) RESRAD for soil contaminated with radionuclides; (2) RESRAD-BUILD for buildings contaminated with radionuclides; (3) RESRAD-CHEM for soil contaminated with hazardous chemicals; (4) RESRAD-BASELINE for baseline risk assessment with measured media concentrations of both radionuclides and chemicals; (5) RESRAD-ECORISK for ecological risk assessment; (6) RESRAD-RECYCLE for recycle and reuse of radiologically contaminated metals and equipment; and (7) RESRAD-OFFSITE for off-site receptor radiological dose assessment. Four of these seven codes (RESRAD, RESRAD-BUILD, RESRAD-RECYCLE, and RESRAD-OFFSITE) also have uncertainty analysis capabilities that allow the user to input distributions of parameters. RESRAD has been widely used in the United States and abroad and approved by many federal and state agencies. Experience has shown that the RESRAD codes are useful tools for evaluating sites contaminated with radioactive residues. The use of RESRAD codes has resulted in significant savings in cleanup cost. Analysis of 19 site-specific uranium guidelines is discussed in the paper.
Date: October 21, 1999
Creator: Yu, C.; Kamboj, S.; Cheng, J. J.; LePoire, D.; Gnanapragasam, E.; Zielen, A. et al.
Object Type: Article
System: The UNT Digital Library
AQUEOUS BIPHASE EXTRACTION FOR PROCESSING OF FINE COAL (open access)

AQUEOUS BIPHASE EXTRACTION FOR PROCESSING OF FINE COAL

None
Date: December 21, 1999
Creator: Osseo-Asare, K.
Object Type: Report
System: The UNT Digital Library
Architecture for nuclear energy in the 21st century (open access)

Architecture for nuclear energy in the 21st century

Global and regional scenarios for future energy demand have been assessed from the perspectives of nuclear materials management. From these the authors propose creation of a nuclear fuel cycle architecture which maximizes inherent protection of plutonium and other nuclear materials. The concept also provides technical and institutional flexibility for transition into other fuel cycle systems, particularly those involving breeder reactors. The system, its implementation timeline, and overall impact are described in the paper.
Date: February 21, 1999
Creator: Arthu, E.D.; Cunningham, P.T. & Wagner, R.L. Jr.
Object Type: Article
System: The UNT Digital Library
Azo Dyes and Their Interfacial Activity: Implications for Multiphase Flow Experiments (open access)

Azo Dyes and Their Interfacial Activity: Implications for Multiphase Flow Experiments

Interfacial effects play an important role in governing multiphase fluid behavior in porous media (Neustadter 1984; Tuck et al. 1988). For instance, several dimensionless numbers have been developed to express important force ratios applicable to multiphase flow in porous media (Morrow and Songkran 1981; Chatzis and Morrow 1984; Wardlaw 1988; Pennell et al. 1996; Dawson and Roberts 1997). These force ratios emphasize the importance of interfacial properties. Our objectives are to provide chemical information regarding the dyes commonly used in multiphase flow visualization studies and to show the surface chemistry effects of the most commonly used dye, Sudan IV, in the tetrachloroethylene (PCE)-water-glass system
Date: April 21, 1999
Creator: Tuck, David M.
Object Type: Article
System: The UNT Digital Library
Ba{sub 1{minus}x}Sr{sub x}TiO{sub 3} thin film sputter-growth processes and electrical property relationships for high frequency devices (open access)

Ba{sub 1{minus}x}Sr{sub x}TiO{sub 3} thin film sputter-growth processes and electrical property relationships for high frequency devices

Precise control of Ba{sub 1{minus}x}Sr{sub x}Ti0{sub 3} (BST) film composition is critical for the production of high-quality BST thin films. Specifically, it is known that nonstoichiometry greatly affects the electrical properties of BST film capacitors. The authors are investigating the composition-microstructure-electrical property relationships of polycrystalline BST films produced by magnetron sputter-deposition using a single target with a Ba/Sr ratio of 50/50 and a (Ba+Sr)/Ti ratio of 1.0. It was determined that the (Ba+Sr)/Ti ratios of these BST films could be adjusted from 0.73 to 0.98 by changing the total (Ar+O{sub 2}) process pressure, while the O{sub 2}/Ar ratio did not strongly affect the metal ion composition. The crystalline quality as well as the measured dielectric constant, dielectric tunability, and electrical breakdown voltage of BST films have been found to be strongly dependent on the composition of the BST films, especially the (Ba+Sr)/Ti ratio. The authors discuss the impact of BST film composition control, through film deposition and process parameters, on the electrical properties of BST capacitors for high frequency devices.
Date: December 21, 1999
Creator: Im, J.; Auciello, O.; Streiffer, S. K.; Baumann, P. K.; Eastman, J. A.; Kaufman, D. Y. et al.
Object Type: Article
System: The UNT Digital Library
Biomedical Applications of the Information-efficient Spectral Imaging Sensor (ISIS) (open access)

Biomedical Applications of the Information-efficient Spectral Imaging Sensor (ISIS)

The Information-efficient Spectral Imaging Sensor (ISIS) approach to spectral imaging seeks to bridge the gap between tuned multispectral and fixed hyperspectral imaging sensors. By allowing the definition of completely general spectral filter functions, truly optimal measurements can be made for a given task. These optimal measurements significantly improve signal-to-noise ratio (SNR) and speed, minimize data volume and data rate, while preserving classification accuracy. The following paper investigates the application of the ISIS sensing approach in two sample biomedical applications: prostate and colon cancer screening. It is shown that in these applications, two to three optimal measurements are sufficient to capture the majority of classification information for critical sample constituents. In the prostate cancer example, the optimal measurements allow 8% relative improvement in classification accuracy of critical cell constituents over a red, green, blue (RGB) sensor. In the colon cancer example, use of optimal measurements boost the classification accuracy of critical cell constituents by 28% relative to the RGB sensor. In both cases, optimal measurements match the performance achieved by the entire hyperspectral data set. The paper concludes that an ISIS style spectral imager can acquire these optimal spectral images directly, allowing improved classification accuracy over an RGB sensor. Compared to …
Date: January 21, 1999
Creator: Gentry, S.M. & Levenson, R.
Object Type: Article
System: The UNT Digital Library
Bundle Binding in Polyelectrolyte Solutions (open access)

Bundle Binding in Polyelectrolyte Solutions

Stiff polyelectrolytes are found to spontaneously form oriented bundles. Conditions under which bundling occurs are found. Molecular dynamics simulations show that divalent counterions are necessary, and the chains must be sufficiently long and stiff. No aggregation occurs for monovalent counterions. For flexible or short chains aggregation occurs, but bundle formation does not. Due to dynamical constraints the systems tend to order into a network of connected bundles, not a single bundle.
Date: January 21, 1999
Creator: Stevens, M.J.
Object Type: Article
System: The UNT Digital Library
Calculation of Shipboard Fire Conditions (open access)

Calculation of Shipboard Fire Conditions

Successful techniques have been developed for simulating some experimental shipboard fires. The experimental fues were staged in Holds 4 and 5 of the Mayo Lykes, a test ship operated by the United States Coast Guard Fire and Safiety Test Detachment at Little Sand Island in Mobile Bay, Alabama. The tests simulated an engine-room or galley fire in the compartment adjacent to simulated hazardous cargo. The purpose of these tests was to determine the effect the fires in Hold 4 had on the cargo in Holds 4 and 5. The simulation is done with CFX, a commercial computational fluid dynamics code. Analyses show that simulations can accurately estimate a maritime fire environment for radioactive materials packaging. Radiative heat transfer dominates the hold-fue environment near the hot bulkhead. Flame temperatures between 800 and 1000°C give heat fluxes and temperatures typical of the measured fire environment for the simulated radioactive materials package. The simulation predicted the occurrence of flow patterns near the calorimeter (simulated radioactive materials package) similar to those observed during the experiment. The simulation was also accurate in predicting a heated fluid layer near the ceiling that increases in thickness as time passes.
Date: May 21, 1999
Creator: Cole, J.K.; Koski, J.A. & Wix, S.D.
Object Type: Article
System: The UNT Digital Library
Calderon cokemaking process/demonstration project (open access)

Calderon cokemaking process/demonstration project

This project deals with the demonstration of a coking process using proprietary technology of Calderon, with the following objectives geared to facilitate commercialization: (1) making coke of such quality as to be suitable for use in hard-driving, large blast furnaces; (2) providing proof that such a process is continuous and environmentally closed to prevent emissions; (3) demonstrating that high-coking-pressure (non-traditional) coal blends which cannot be safely charged into conventional by-product coke ovens can be used in the Calderon process; (4) conducting a blast furnace test to demonstrate the compatibility of the coke produced; and (5) demonstrating that coke can be produced economically, at a level competitive with coke imports. The activities of the past quarter continued to be focused on the following: Drafting of Contracts among the Stakeholders of the Team, Completion and Delivery of Proposal for Phase 2 Permitting and Environmental Work Engineering Progress Preparation of Final Report for Phase 1 DCAA Audit Funding for Phase 2.
Date: December 21, 1999
Creator: Calderon, Albert
Object Type: Report
System: The UNT Digital Library
Characterization of the National Petroleum Reserve No. 3 (NPR-3) Site for Naturally Occurring Radioactive Material(NORM) (open access)

Characterization of the National Petroleum Reserve No. 3 (NPR-3) Site for Naturally Occurring Radioactive Material(NORM)

The National Petroleum Reserve No. 3 site (NPR-3) near Casper, Wyoming is being prepared for transfer to private industry. Remediation of the NPR-3 site has already begun in anticipation of this transfer. This document describes the characterization of the NPR-3 site for Naturally Occurring Radioactive Materials (NORM). Data generated on radionuclide concentrations and radon emanation may be used to determine disposal options and the need for remediation at this site. A preliminary gamma survey of the NPR-3 site was conducted to identify areas of potential NORM contamination. Based on these gamma surveys, two general areas of NORM contamination were found: the North Water Flood area and the BTP-10 produced water discharge steam. A maximum surface exposure rate of 120 {micro}R h{sup -1} was observed in the North Water Flood area, with the highest readings found along the drainage channel from the area. Exposure rates dropped to background quickly with increasing distance from the center of the drainage. The maximum observed exposure rate in the BTP-10 produced water drainage was 40 {micro}R h{sup -1}. Soil and sediment sampling were concentrated in these two areas. All samples were analyzed for concentration of {sup 226}Ra, {sup 228}Ra, and {sup 40}K. Maximum {sup 226}Ra …
Date: January 21, 1999
Creator: White, G. J. & Rood, A. S.
Object Type: Report
System: The UNT Digital Library
Clean Cities Case Study: Barwood Cab Fleet Study Summary (open access)

Clean Cities Case Study: Barwood Cab Fleet Study Summary

Barwood Cab Fleet Study Summary is the second in a new series called ''Alternative Fuel Information Case Studies,'' designed to present real-world experiences with alternative fuels to fleet managers and other industry stakeholders.
Date: May 21, 1999
Creator: Whalen, P.
Object Type: Book
System: The UNT Digital Library
The climatic and hydrologic history of southern Nevada during the late Quaternary (open access)

The climatic and hydrologic history of southern Nevada during the late Quaternary

Understanding climate change during the expected life span of a potential high-level nuclear-waste repository at Yucca Mountain, Nevada, requires estimates of future climate boundary conditions. These climate boundary conditions are governed by changes in the Earth's orbital properties (eccentricity, obliquity, precession) that determine insolation. Subcycles of the 400,000 year insolation-controlled climate cycles last approximately 100,000 years. This report describes the changes which have occurred in the climatic history of Southern Nevada during the past 400,000 years. These changes provide a basis for understanding the changes which may occur during the long-term future in this area.
Date: September 21, 1999
Creator: Forester, R. M.; Bradbury, J. P.; Carter, C.; Elvidge-Tuma, A. B.; Hemphill, M. L.; Lundstrom, S. C. et al.
Object Type: Report
System: The UNT Digital Library
Collectivity of the ''Three-Phonon'' Region in {sup 100}Ru (open access)

Collectivity of the ''Three-Phonon'' Region in {sup 100}Ru

We have studied the quadrupole degree of freedom in a typical vibrational nucleus, {sup 100}Ru. From inelastic neutron scattering at the Van de Graaff accelerator of the University of Kentucky, lifetimes of states in {sup 100}Ru were determined. Absolute transition rates or limits thereon were extracted and compared to the theoretical description of this nucleus.
Date: December 21, 1999
Creator: Genilloud, L.; Brown, T.B.; Corminboeuf, G & Garrett, P.
Object Type: Article
System: The UNT Digital Library