States

327 SNF fuel return to K-Basin quality process plan (open access)

327 SNF fuel return to K-Basin quality process plan

The B and W Hanford Company`s (BWHC) 327 Facility, in the 300 Area of the Hanford Site, contains Spent Nuclear Fuel (SNF) single fuel element canisters (SFEC) and fuel remnant canisters (FRC) which are to be returned to K-Basin. Seven shipments of up to six fuel canisters will be loaded into the CNS 1-13G Cask and transported to 105-KE.
Date: September 22, 1998
Creator: Ham, J. E.
Object Type: Report
System: The UNT Digital Library
2000 Census: Analysis of Fiscal Year 2000 Amended Budget Request (open access)

2000 Census: Analysis of Fiscal Year 2000 Amended Budget Request

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Bureau of the Census' fiscal year (FY) 2000 budget, focusing on: (1) an overall analysis of the key changes in assumptions resulting in the $1.7 billion request increase; (2) details on the components of this increase and which changes, according to the bureau, are related and which are not related to the inability to use statistical sampling; and (3) the process the bureau used for developing the increase in the original FY 2000 budget request and the amended budget request."
Date: September 22, 1999
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Acceptance Test Procedure for AMS-4 Continuous Air Monitors (CAM) at 241-AN Exhausters (open access)

Acceptance Test Procedure for AMS-4 Continuous Air Monitors (CAM) at 241-AN Exhausters

This supporting document provides detailed instruction for ensuring the existing alarms and interlocks are in an acceptable condition prior to performing the functional test of the AMS-4 installation.
Date: September 22, 1999
Creator: FREEMAN, R.D.
Object Type: Report
System: The UNT Digital Library
Actively Biased p-Channel MOSFET Studied with Scanning Capacitance Microscopy (open access)

Actively Biased p-Channel MOSFET Studied with Scanning Capacitance Microscopy

Scanning capacitance microscopy (SCM) was used to study the cross section of an operating p-channel MOSFET. We discuss the novel test structure design and the modifications to the SCM hardware that enabled us to perform SCM while applying dc bias voltages to operate the device. The results are compared with device simulations performed with DAVINCI.
Date: September 22, 1999
Creator: Nakakura, Craig Y.; Hetherington, Dale L.; Shaneyfelt, Marty R.; Dodd, Paul E. & De Wolf, P.
Object Type: Article
System: The UNT Digital Library
Activity Management System user reference manual. Revision 1 (open access)

Activity Management System user reference manual. Revision 1

The Activity Management System (AMS) was developed in response to the need for a simple-to-use, low-cost, user interface system for collecting and logging Hanford Waste Vitrification Plant Project (HWVP) activities. This system needed to run on user workstations and provide common user access to a database stored on a local network file server. Most important, users wanted a system that provided a management tool that supported their individual process for completing activities. Existing system treated the performer as a tool of the system. All AMS data is maintained in encrypted format. Users can feel confident that any activities they have entered into the database are private and that, as the originator, they retain sole control over who can see them. Once entered into the AMS database, the activities cannot be accessed by anyone other than the originator, the designated agent, or by authorized viewers who have been explicitly granted the right to look at specific activities by the originator. This user guide is intended to assist new AMS users in learning how to use the application and, after the initial learning process, will serve as an ongoing reference for experienced users in performing infrequently used functions. Online help screens provide …
Date: September 22, 1994
Creator: Gates, T. A. & Burdick, M. B.
Object Type: Report
System: The UNT Digital Library
Advanced reactors transition fiscal year 1995 multi-year program plan WBS 7.3 (open access)

Advanced reactors transition fiscal year 1995 multi-year program plan WBS 7.3

This document describes in detail the work to be accomplished in FY-1995 and the out years for the Advanced Reactors Transition (WBS 7.3). This document describes specific milestones and funding profiles. Based upon the Fiscal Year 1995 Multi-Year Program Plan, DOE will provide authorization to perform the work outlined in the FY 1995 MYPP. Following direction given by the US Department of Energy (DOE) on December 15, 1993, Advanced Reactors Transition (ART), previously known as Advanced Reactors, will provide the planning and perform the necessary activities for placing the Fast Flux Test Facility (FFTF) in a radiologically and industrially safe shutdown condition. The DOE goal is to accomplish the shutdown in approximately five years. The Advanced Reactors Transition Multi-Year Program Plan, and the supporting documents; i.e., the FFTF Shutdown Program Plan and the FFTF Shutdown Project Resource Loaded Schedule (RLS), are defined for the life of the Program. During the transition period to achieve the Shutdown end-state, the facilities and systems will continue to be maintained in a safe and environmentally sound condition. Additionally, facilities that were associated with the Office of Nuclear Energy (NE) Programs, and are no longer required to support the Liquid Metal Reactor Program will be …
Date: September 22, 1994
Creator: Loika, E. F.
Object Type: Report
System: The UNT Digital Library
Aging tests of ethylene contaminated argon/ethane (open access)

Aging tests of ethylene contaminated argon/ethane

We report on aging tests of argon/ethane gas with a minor (1800 ppM) component of ethylene. The measurements were first conducted with the addition of alcohol to test the suppression of aging by this additive, with exposure up to {approx}1.5 C/cm. Tests have included: a proportional tube with ethanol, another with isopropyl alcohol, and for comparison a tube has also been run with ethanol and argon/ethane from CDF`s old (ethylene-free) ethane supply. The aging test with ethanol showed no difference between the ethylene-free and the ethylene tube. Furthermore, raw aging rates of argon/ethane and argon/ethane/ethylene were measured by exposing tubes without the addition of alcohol to about 0.1 C/cm. Again, no significant difference was observed. In conclusion, we see no evidence that ethylene contamination up to 1800 ppM has any adverse effect on wire aging. However, this level of ethylene does seem to significantly suppress the gas gain.
Date: September 22, 1994
Creator: Atac, M. & Bauer, G.
Object Type: Report
System: The UNT Digital Library
Alternatives for high-level waste forms, containers, and container processing systems (open access)

Alternatives for high-level waste forms, containers, and container processing systems

This study evaluates alternatives for high-level waste forms, containers, container processing systems, and onsite interim storage. Glass waste forms considered are cullet, marbles, gems, and monolithic glass. Small and large containers configured with several combinations of overpack confinement and shield casks are evaluated for these waste forms. Onsite interim storage concepts including canister storage building, bore holes, and storage pad were configured with various glass forms and canister alternatives. All favorable options include the monolithic glass production process as the waste form. Of the favorable options the unshielded 4- and 7-canister overpack options have the greatest technical assurance associated with their design concepts due to their process packaging and storage methods. These canisters are 0.68 m and 0.54 m in diameter respectively and 4.57 m tall. Life-cycle costs are not a discriminating factor in most cases, varying typically less than 15 percent.
Date: September 22, 1995
Creator: Crawford, T.W.
Object Type: Report
System: The UNT Digital Library
Assessing the Long-Term Hydrologic Impact of Land Use Change Using a GIS-NPS Model and the World Wide Web (open access)

Assessing the Long-Term Hydrologic Impact of Land Use Change Using a GIS-NPS Model and the World Wide Web

Assessment of the long-term hydrologic impacts of land use change is important for optimizing management practices to control runoff and non-point source (NPS) pollution associated with watershed development. Land use change, dominated by an increase in urban/impervious areas, can have a significant impact on water resources. Non-point source (NPS) pollution is the leading cause of degraded water quality in the US and urban areas are an important source of NPS pollution. Despite widespread concern over the environmental impacts of land use changes such as urban sprawl, most planners, government agencies and consultants lack access to simple impact-assessment tools that can be used with readily available data. Before investing in sophisticated analyses and customized data collection, it is desirable to be able to run initial screening analyses using data that are already available. In response to this need, we developed a long-term hydrologic impact assessment technique (L-THIA) using the popular Curve Number (CN) method that makes use of basic land use, soils and long-term rainfall data. Initially developed as a spreadsheet application, the technique allows a user to compare the hydrologic impacts of past, present and any future land use change. Consequently, a NPS pollution module was incorporated to develop the …
Date: September 22, 1999
Creator: Bhaduri, B.; Engel, B.; Harbor, J.; Jones, D. & Lim, K.J.
Object Type: Article
System: The UNT Digital Library
Assessment of historical leak model methodology as applied to the REDOX high-level waste tank SX-108 (open access)

Assessment of historical leak model methodology as applied to the REDOX high-level waste tank SX-108

Using the Historical Leak Model approach, the estimated leak rate (and therefore, projected leak volume) for Tank 241-SX-108 could not be reproduced using the data included in the initial document describing the leak methodology. An analysis of parameters impacting tank heat load calculations strongly suggest that the historical tank operating data lack the precision and accuracy required to estimate tank leak volumes using the Historical Leak Model methodology.
Date: September 22, 1999
Creator: Jones, T. E.
Object Type: Report
System: The UNT Digital Library
Attrition Resistant Iron-Based Fischer-Tropsch Catalysts. (open access)

Attrition Resistant Iron-Based Fischer-Tropsch Catalysts.

The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO and H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. Iron-based (Fe) catalysts are preferred catalysts for F-T when using low CO/H{sub 2} ratio synthesis gases derived from modern coal gasifiers. This is because in addition to reasonable F-T activity, the F-T catalysts also possess high water gas shift (WGS) activity. However, a serious problem with the use of Fe catalysts in a SBCR is their tendency to undergo attrition. This can cause fouling/plugging of downstream filters and equipment, making the separation of catalyst from the oil/wax product very difficult if not impossible, and results in a steady loss of catalyst from the reactor. The objectives of this research are to develop a better understanding of the parameters affecting attrition resistance of Fe F-T catalysts suitable for use in SBCRs and to incorporate this understanding into the design of novel Fe catalysts having superior attrition resistance. Catalyst preparations will be based on the use …
Date: September 22, 1997
Creator: Jothimurugesan, K.; Goodwin, J. S.; Spivey, J. J. & Gangwal, S. K.
Object Type: Report
System: The UNT Digital Library
B-Cell waste classification sampling and analysis plan (open access)

B-Cell waste classification sampling and analysis plan

This report documents the methods used to collect and analyze samples to obtain data necessary to verify and/or determine the radionuclide content of the 324 Facility B-Cell decontamination and decommissioning waste stream.
Date: September 22, 1999
Creator: Hobart, R. L.
Object Type: Report
System: The UNT Digital Library
Brookhaven National Laboratory Enviromental Monitoring Plan (open access)

Brookhaven National Laboratory Enviromental Monitoring Plan

Triennial update that describes the BNL Environmental Monitoring Program for all media (air, surface water, ground water, etc.) in accordance with DOE ORDER 5400.5
Date: September 22, 1999
Creator: Daum, M.; Dorsch, W. M.; Fry, J.; Green, T.; Lee, R.; Naidu, J. et al.
Object Type: Report
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 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 were focused on the following: Detailed workings of the team; Proposal to FETC for Phase II; Permitting and Environmental Work; and Engineering Progress.
Date: September 22, 1999
Creator: Calderon, Albert
Object Type: Report
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: (i) making coke of such quality as to be suitable for use in hard-driving, large blast furnaces; (ii) providing proof that such process is continuous and environmentally closed to prevent emissions; (iii) 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; and (iv) demonstrating that coke can be produced economically, at a level competitive with coke imports. The activities of the past quarter were focused on the following: � Consolidation of the project team-players; � Recruiting Koppers Industries as an additional stakeholder; � Developing a closed system for the production of binder pitch from tar in the Calderon coking process as the incentive for Koppers to join the team; � Gathering appropriate equipment for conducting a set of experiments at bench scale to simulate tar quality produced from the Calderon coking process for the production of binder pitch; and � Further progress made in the design of the commercial coking reactor.
Date: September 22, 1998
Creator: CALDERON, ALBERT
Object Type: Report
System: The UNT Digital Library
Characterization of Tank 17 Residual Waste (open access)

Characterization of Tank 17 Residual Waste

Plans are to close Tank 17, a type IV waste tank in the F-area Tank Farm, by filling it with pumpable backfills. Most of the waste was removed from the tank in the late 1980s, and the remainder of the waste was removed in a short spray washing campaign that began on 11 April 1997. More details on the planned closure can be found in the Closure Plan for the High-Level Waste (HLW) Tanks and the specific closure module for Tank 17. To show that closure of the tank is environmentally sound, a performance evaluation has been performed for Tank 17. The performance evaluation projected the concentration of contaminants at various locations and times after closure. This report documents the basis for the inventories of contaminants that were used in the Tank 17 performance evaluation.
Date: September 22, 1997
Creator: D'Entremont, P. & Thomas Caldwell, T.
Object Type: Report
System: The UNT Digital Library
Chemical vapor deposition of refractory ternary nitrides for advanced diffusion barriers (open access)

Chemical vapor deposition of refractory ternary nitrides for advanced diffusion barriers

Refractory ternary nitride films for diffusion barriers in microelectronics have been grown using chemical vapor deposition. Thin films of titanium-silicon-nitride, tungsten-boron-nitride, and tungsten-silicon-nitride of various compositions have been deposited on 150 mm Si wafers. The microstructure of the films are either fully amorphous for the tungsten based films, or nauocrystalline TiN in an amorphous matrix for titanium-silicon-nitride. All films exhibit step coverages suitable for use in future microelectronics generations. Selected films have been tested as diffusion barriers between copper and silicon, and generally perform extremely weH. These fiIms are promising candidates for advanced diffusion barriers for microelectronics applications. The manufacturing of silicon wafers into integrated circuits uses many different process and materials. The manufacturing process is usually divided into two parts: the front end of line (FEOL) and the back end of line (BEOL). In the FEOL the individual transistors that are the heart of an integrated circuit are made on the silicon wafer. The responsibility of the BEOL is to wire all the transistors together to make a complete circuit. The transistors are fabricated in the silicon itself. The wiring is made out of metal, currently aluminum and tungsten, insulated by silicon dioxide, see Figure 1. Unfortunately, silicon will …
Date: September 22, 1998
Creator: Custer, Jonathan S.; Fleming, James G.; Roherty-Osmun, Elizabeth & Smith, Paul Martin
Object Type: Article
System: The UNT Digital Library
(Chemically vapor deposited diamond films) (open access)

(Chemically vapor deposited diamond films)

The NATO-ASI on Diamond and Diamond-Like Films and Coatings'' was an opportunity for us to learn the latest research results from ongoing programs in the leading laboratories of the world and relate them to our work. Specific examples are given in the comprehensive report which follows. The meeting format provided an ideal environment to meet and interact with our international counterparts. It is clear that our studies are well regarded, and that we have established an excellent reputation in a short time. New opportunities for collaboration were identified. A panel discussion at the end of the meeting addressed the needs and opportunities in the synthesis of CVD diamond. The key scientific needs are those related to modeling the nucleation and growth processes and to elucidation of the critical roles of atomic hydrogen and the mechanisms of carbon addition to the growing surfaces. The development and more extensive use of in situ diagnostics for both surface and gas phases are important to solving these issues. The more immediate practical questions concern the identification of the growth-rate-limiting steps, the relation of growth parameters to the resulting film structure, and the dependence of properties on structure.
Date: September 22, 1990
Creator: Clausing, R.E. & Heatherly, L. Jr.
Object Type: Report
System: The UNT Digital Library
Computational Modeling of Heterogeneous Reactive Materials at the Mesoscale (open access)

Computational Modeling of Heterogeneous Reactive Materials at the Mesoscale

The mesoscopic processes of consolidation, deformation and reaction of shocked porous energetic materials are studied using shock physics analysis of impact on a collection of discrete ''crystals.'' Highly resolved three-dimensional CTH simulations indicate that rapid deformation occurs at material contact points causing large amplitude fluctuations of stress states with wavelengths of the order of several particle diameters. Localization of energy produces ''hot-spots'' due to shock focusing and plastic work near internal boundaries as material flows into interstitial regions. Numerical experiments indicate that ''hot-spots'' are strongly influenced by multiple crystal interactions. Chemical reaction processes also produce multiple wave structures associated with particle distribution effects. This study provides new insights into the micromechanical behavior of heterogeneous energetic materials strongly suggesting that initiation and sustained reaction of shocked heterogeneous materials involves states distinctly different from single jump state descriptions.
Date: September 22, 1999
Creator: BAER, MARVIN R.
Object Type: Article
System: The UNT Digital Library
Crop Insurance: USDA Needs a Better Estimate of Improper Payments to Strengthen Controls Over Claims (open access)

Crop Insurance: USDA Needs a Better Estimate of Improper Payments to Strengthen Controls Over Claims

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on crop insurance, focusing on: (1) the extent to which crop insurance claims are paid in error--either unintentionally or fraudulently--and, to the extent practical, a comparison of the rate at which claims are paid in error with rates for other types of insurance; (2) the insurance companies' and the Department of Agriculture's Risk Management Agency's (RMA) quality controls to ensure that accurate claims payments are made; and (3) the proposals being considered to reduce insurance companies' administrative requirements and the potential impact of these proposals on the operations of the crop insurance program."
Date: September 22, 1999
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
CSER 94-004: Criticality safety of double-shell waste storage tanks (open access)

CSER 94-004: Criticality safety of double-shell waste storage tanks

This criticality safety evaluation covers double-shell waste storage tanks (DSTs), double-contained receiver tanks (DCRTs), vault tanks, and the 242-A Evaporator located in the High Level Waste (HLW) Tank Farms on the Hanford Site. Limits and controls are specified and the basis for ensuring criticality safety is discussed. A minimum limit of 1,000 is placed upon the solids/plutonium mass ratio in incoming waste. The average solids/Pu mass ratio over all waste in tank farms is estimated to be about 74,500, about 150 times larger than required to assure subcriticality in homogeneous waste. PFP waste in Tank-102-SY has an estimated solids/Pu mass ratio of 10,000. Subcriticality is assured whenever the plutonium concentration is less than 2.6 g. The median reported plutonium concentration for 200 samples of waste solids is about 0.01 g (0.038 g/gal). A surveillance program is proposed to increase the knowledge of the waste and provide added assurance of the high degree of subcriticality.
Date: September 22, 1994
Creator: Rogers, C. A.
Object Type: Report
System: The UNT Digital Library
DEFORMATION MONITORING ANALYSIS (open access)

DEFORMATION MONITORING ANALYSIS

None
Date: September 22, 1998
Creator: Lin, M. & Kicker, D.
Object Type: Report
System: The UNT Digital Library
Density of simulated americium/curium melter feed solution (open access)

Density of simulated americium/curium melter feed solution

Vitrification will be used to stabilize an americium/curium (Am/Cm) solution presently stored in F-Canyon for eventual transport to Oak Ridge National Laboratory and use in heavy isotope production programs. Prior to vitrification, a series of in-tank oxalate precipitation and nitric/oxalic acid washes will be used to separate these elements and lanthanide fission products from the bulk of the uranium and metal impurities present in the solution. Following nitric acid dissolution and oxalate destruction, the solution will be denitrated and evaporated to a dissolved solids concentration of approximately 100 g/l (on an oxide basis). During the Am/Cm vitrification, an airlift will be used to supply the concentrated feed solution to a constant head tank which drains through a filter and an in-line orifice to the melter. Since the delivery system is sensitive to the physical properties of the feed, a simulated solution was prepared and used to measure the density as a function of temperature between 20 to 70{degrees} C. The measured density decreased linearly at a rate of 0.0007 g/cm3/{degree} C from an average value of 1.2326 g/cm{sup 3} at 20{degrees} C to an average value of 1.1973g/cm{sup 3} at 70{degrees} C.
Date: September 22, 1997
Creator: Rudisill, T.S.
Object Type: Report
System: The UNT Digital Library
Design analysis of 2,000 lb JIB crane for chemical lab (open access)

Design analysis of 2,000 lb JIB crane for chemical lab

A 2,000 lbf jib crane is needed to replace an existing 1,000 lbf jib crane in the Chemical Lab (Building MO-733). The existing 1,000 lbf jib crane (to be replaced) has a 174 boom (I-beam). The crane is attached to the wall through two brackets (about 8 1/2-ft apart). The boom is attached to the lower bracket, and a supporting rod is attached to the upper bracket. The supporting rod is attached to the boom at about 8-ft from the free end. After preliminary studies and discussions, it was decided to construct the new jib crane from two perpendicular I-beams (L-shape) without a supporting rod. The crane is to be supported on the wall through the two lower existing brackets (about 5-ft apart). The boom is to be 20-ft long cantilever (the horizontal I-beam). The vertical I-beam is to be attached to the lower two existing brackets to support the jib crane to the wall. This construction is to be similar to another existing 1,000 lbf jib crane (L-shape) in the lab. The purpose of this document is to perform a design analysis for the proposed 2,000 lbf jib crane to determine suitable sizes of members and configuration of the …
Date: September 22, 1999
Creator: Ziada, H. H.
Object Type: Report
System: The UNT Digital Library