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2009 DOE-EM LONG-TERM MONITORING TECHNICAL FORUM SUMMARY REPORT
The U. S. Department of Energy's (DOE) Office of Environmental Management (EM) has the responsibility for cleaning up 60 sites in 22 states that were associated with the legacy of the nation's nuclear weapons program and other research and development activities. These sites are unique and many of the technologies needed to successfully disposition the associated wastes have yet to be developed or would require significant re-engineering to be adapted for future EM cleanup efforts. In 2008, the DOE-EM Engineering and Technology Program (EM-22) released the Engineering and Technology Roadmap in response to Congressional direction and the need to focus on longer term activities required for the completion of the aforementioned cleanup program. One of the strategic initiatives included in the Roadmap was to enhance long term performance monitoring as defined by 'Develop and deploy cost effective long-term strategies and technologies to monitor closure sites (including soil, groundwater, and surface water) with multiple contaminants (organics, metals and radionuclides) to verify integrated long-term cleanup performance'. To support this long-term monitoring (LTM) strategic initiative, EM 22 and the Savannah River National Laboratory (SRNL) organized and held an interactive symposia, known as the 2009 DOE-EM Long-Term Monitoring Technical Forum, to define and prioritize …
Date:
September 30, 2009
Creator:
Mayer, J.
Object Type:
Report
System:
The UNT Digital Library
2009 River Corridor Closure Contractor Revegetation and Mitigation Monitoring Report
This document details the results of revegetation and mitigation monitoring conducted in 2009, including 25 revegetation/restoration projects, one revegetation/mitigation project, and three bat mitigation projects.
Date:
September 30, 2009
Creator:
Lindsey, C. T.; Gano, K. A. & Teel, R. D.
Object Type:
Report
System:
The UNT Digital Library
Accurate Wind Characterization in Complex Terrain Using the Immersed Boundary Method
This paper describes an immersed boundary method (IBM) that facilitates the explicit resolution of complex terrain within the Weather Research and Forecasting (WRF) model. Two different interpolation methods, trilinear and inverse distance weighting, are used at the core of the IBM algorithm. Functional aspects of the algorithm's implementation and the accuracy of results are considered. Simulations of flow over a three-dimensional hill with shallow terrain slopes are preformed with both WRF's native terrain-following coordinate and with both IB methods. Comparisons of flow fields from the three simulations show excellent agreement, indicating that both IB methods produce accurate results. However, when ease of implementation is considered, inverse distance weighting is superior. Furthermore, inverse distance weighting is shown to be more adept at handling highly complex urban terrain, where the trilinear interpolation algorithm breaks down. This capability is demonstrated by using the inverse distance weighting core of the IBM to model atmospheric flow in downtown Oklahoma City.
Date:
September 30, 2009
Creator:
Lundquist, K A; Chow, F K; Lundquist, J K & Kosovic, B
Object Type:
Article
System:
The UNT Digital Library
Aviation Security: A National Strategy and Other Actions Would Strengthen TSA's Efforts to Secure Commercial Airport Perimeters and Access Controls
A letter report issued by the Government Accountability Office with an abstract that begins "Incidents of airport workers using access privileges to smuggle weapons through secured airport areas and onto planes have heightened concerns regarding commercial airport security. The Transportation Security Administration (TSA), along with airports, is responsible for security at TSA-regulated airports. To guide risk assessment and protection of critical infrastructure, including airports, the Department of Homeland Security (DHS) developed the National Infrastructure Protection Plan (NIPP). GAO was asked to examine the extent to which, for airport perimeters and access controls, TSA (1) assessed risk consistent with the NIPP; (2) implemented protective programs, and evaluated its worker screening pilots; and (3) established a strategy to guide decision making. GAO examined TSA documents related to risk assessment activities, airport security programs, and worker screening pilots; visited nine airports of varying size; and interviewed TSA, airport, and association officials."
Date:
September 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Cavity Light-Emitting Diode for Durable, High-Brightness and High-Efficiency Lighting Applications: First Budget Period Technical Report
A COLED device consists of a top electrode (anode) and a bottom electrode (cathode) separated by a thin dielectric layer. In this metal/dielectric stack, numerous small wells, or cavities, are etched through the top electrode and the dielectric layer. These cavities are subsequently filled with LEP molecules. When a voltage is applied between the top and bottom electrodes, holes (from the top electrode) and electrons (from the bottom electrode) are injected into the polymer. Light emission is generated upon recombination of holes and electrons within the polymer along the perimeters of cavities. Figure 1 compares the structures of the COLED and the traditional OLED. The existing COLED fabrication process flow is illustrated in Figure 2. A COLED can potentially be 5 times more efficient and can operate at as much as 100 times higher current density with much longer lifetime than an OLED. To fully realize these potential advantages, the COLED technology must overcome the following technical barriers, which were the technical focused points for Years 1 and 2 (Phase I) of this project: (1) Construct optimum thickness dielectric layer: In the traditional OLED structure, the optimal thickness of the LEP film is approximately 80-100 nm. In a COLED device, …
Date:
September 30, 2009
Creator:
Shi, Yijian
Object Type:
Report
System:
The UNT Digital Library
Contam airflow models of three large buildings: Model descriptions and validation
Airflow and pollutant transport models are useful for several reasons, including protection from or response to biological terrorism. In recent years they have been used for deciding how many biological agent samplers are needed in a given building to detect the release of an agent; to figure out where those samplers should be located; to predict the number of people at risk in the event of a release of a given size and location; to devise response strategies in the event of a release; to determine optimal trade-offs between sampler characteristics (such as detection limit and response time); and so on. For some of these purposes it is necessary to model a specific building of interest: if you are trying to determine optimal sampling locations, you must have a model of your building and not some different building. But for many purposes generic or 'prototypical' building models would suffice. For example, for determining trade-offs between sampler characteristics, results from one building will carry over other, similar buildings. Prototypical building models are also useful for comparing or testing different algorithms or computational pproaches: different researchers can use the same models, thus allowing direct comparison of results in a way that is …
Date:
September 30, 2009
Creator:
Black, Douglas R. & Price, Phillip N.
Object Type:
Report
System:
The UNT Digital Library
Continuation of Research, Commercialization, and Workforce Development in the Polymer/Electronics Recycling Industry
The MARCEE Project was established to understand the problems associated with electronics recycling and to develop solutions that would allow an electronics recycling industry to emerge. While not all of the activities have been funded by MARCEE, but through private investment, they would not have occurred had the MARCEE Project not been undertaken. The problems tackled and the results obtained using MARCEE funds are discussed in detail in this report.
Date:
September 30, 2009
Creator:
Croucher, Mel; Gupta, Rakesh; GangaRao, Hota; Cairns, Darran; Wang, Jinzing; Shi, Xiaodong et al.
Object Type:
Report
System:
The UNT Digital Library
Contract Management: Extent of Federal Spending under Cost-Reimbursement Contracts Unclear and Key Controls Not Always Used
A letter report issued by the Government Accountability Office with an abstract that begins "Federal agencies obligate billions of dollars annually using cost-reimbursement contracts. This type of contract involves high risk for the government because of the potential for cost escalation and because the government pays a contractor's costs of performance regardless of whether the work is completed. As such, cost-reimbursement contracts are suitable only when the cost of the work to be done cannot be estimated with sufficient accuracy to use fixed-price contracts. Agencies may use this contract type only if certain conditions are met. At your request, GAO assessed (1) the extent of agencies' obligations under these contracts, (2) the rationales for using this contract type, (3) determinations that contractors' accounting systems are adequate for determining costs applicable to the contracts, and (4) procedures for monitoring contractor cost controls. GAO analyzed federal procurement data and contract files and interviewed contracting and other government officials."
Date:
September 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Control of Computer Room Air Conditioning using IT Equipment Sensors
The goal of this demonstration was to show how sensors in IT equipment could be accessed and used to directly control computer room air conditioning. The data provided from the sensors is available on the IT network and the challenge for this project was to connect this information to the computer room air handler's control system. A control strategy was developed to enable separate control of the chilled water flow and the fans in the computer room air handlers. By using these existing sensors in the IT equipment, an additional control system is eliminated (or could be redundant) and optimal cooling can be provided saving significant energy. Using onboard server temperature sensors will yield significant energy reductions in data centers. Intel hosted the demonstration in its Santa Clara, CA data center. Intel collaborated with IBM, HP, Emerson, Wunderlich-Malec Engineers, FieldServer Technologies, and LBNL to install the necessary components and develop the new control scheme. LBNL also validated the results of the demonstration.
Date:
September 30, 2009
Creator:
Bell, Geoffrey C.; Storey, Bill & Patterson, Michael K.
Object Type:
Report
System:
The UNT Digital Library
Conversion of Hydrogen Sulfide in Coal Gases to Liquid Elemental Sulfur with Monolithic Catalysts
Removal of hydrogen sulfide (H{sub 2}S) from coal gasifier gas and sulfur recovery are key steps in the development of Department of Energy's (DOE's) advanced power plants that produce electric power and clean transportation fuels with coal and natural gas. These plants will require highly clean coal gas with H{sub 2}S below 1 ppmv and negligible amounts of trace contaminants such as hydrogen chloride, ammonia, alkali, heavy metals, and particulate. The conventional method of sulfur removal and recovery employing amine, Claus, and tail-gas treatment is very expensive. A second generation approach developed under DOE's sponsorship employs hot-gas desulfurization (HGD) using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process (DSRP). However, this process sequence does not remove trace contaminants and is targeted primarily towards the development of advanced integrated gasification combined cycle (IGCC) plants that produce electricity (not both electricity and transportation fuels). There is an immediate as well as long-term need for the development of cleanup processes that produce highly clean coal gas for next generation power plants. To this end, a novel process is now under development at several research organizations in which the H{sub 2}S in coal gas is directly oxidized to elemental sulfur over a …
Date:
September 30, 2009
Creator:
Kwon, K. C.
Object Type:
Report
System:
The UNT Digital Library
Corrective Action Decision Document/Closure Report for Corrective Action Unit 482: Area 15 U15a/e Muckpiles and Ponds Nevada Test Site
This Corrective Action Decision Document /Closure Report (CADD/CR) was prepared by the Defense Threat Reduction Agency (DTRA) for Corrective Action Unit (CAU) 482 U15a/e Muckpiles and Ponds. This CADD/CR is consistent with the requirements of the Federal Facility Agreement and Consent Order agreed to by the State of Nevada, the U.S. Department of Energy, and the U.S. Department of Defense. Corrective Action Unit 482 is comprised of three Corrective Action Sites (CASs) and one adjacent area: CAS 15-06-01, U15e Muckpile; CAS 15-06-02, U15a Muckpile; CAS 15-38-01, Area 15 U15a/e Ponds; and Drainage below the U15a Muckpile. The purpose of this CADD/CR is to provide justification and documentation supporting the recommendation for closure with no further corrective action, by placing use restrictions on the three CASs and the adjacent area of CAU 482. To support this recommendation, a corrective action investigation (CAI) was performed in September 2002. The purpose of the CAI was to fulfill the following data needs as defined during the Data Quality Objective (DQO) process: (1) Determine whether contaminants of concern (COCs) are present. (2) If COCs are present, determine their nature and extent. (3) Provide sufficient information and data to determine appropriate corrective actions. The CAU 482 …
Date:
September 30, 2009
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
Cost-Effective Fabrication Routes for the Production of Quantum Well Structures and Recovery of Waste Heat from Heavy Duty Trucks
The primary objectives of Phase I were: (a) carry out cost, performance and system level models, (b) quantify the cost benefits of cathodic arc and heterogeneous nanocomposites over sputtered material, (c) evaluate the expected power output of the proposed thermoelectric materials and predict the efficiency and power output of an integrated TE module, (d) define market acceptance criteria by engaging Caterpillar's truck OEMs, potential customers and dealers and identify high-level criteria for a waste heat thermoelectric generator (TEG), (e) identify potential TEG concepts, and (f) establish cost/kWatt targets as well as a breakdown of subsystem component cost targets for the commercially viable TEG.
Date:
September 30, 2009
Creator:
Willigan, Rhonda
Object Type:
Report
System:
The UNT Digital Library
Cryptographic Trust Management Requirements Specification: Version 1.1
The Cryptographic Trust Management (CTM) Project is being developed for Department of Energy, OE-10 by the Pacific Northwest National Laboratory (PNNL). It is a component project of the NSTB Control Systems Security R&D Program.
Date:
September 30, 2009
Creator:
Edgar, Thomas W.
Object Type:
Report
System:
The UNT Digital Library
Cybersecurity: Current Legislation, Executive Branch Initiatives, and Options for Congress
This report identifies cybersecurity policy issues that have been proposed for priority consideration. The report lists and synopsizes current legislation that has been developed to address various aspects of the cybersecurity problem. It then lists the current status of the legislation and compares legislation with existing executive branch initiatives. Finally, analysis of information contained in executive branch initiatives and congressional legislation is used to further highlight related considerations for Congress.
Date:
September 30, 2009
Creator:
Theohary, Catherine A. & Rollins, John
Object Type:
Report
System:
The UNT Digital Library
Data Assimilation Tools for CO2 Reservoir Model Development – A Review of Key Data Types, Analyses, and Selected Software
Pacific Northwest National Laboratory (PNNL) has embarked on an initiative to develop world-class capabilities for performing experimental and computational analyses associated with geologic sequestration of carbon dioxide. The ultimate goal of this initiative is to provide science-based solutions for helping to mitigate the adverse effects of greenhouse gas emissions. This Laboratory-Directed Research and Development (LDRD) initiative currently has two primary focus areas—advanced experimental methods and computational analysis. The experimental methods focus area involves the development of new experimental capabilities, supported in part by the U.S. Department of Energy’s (DOE) Environmental Molecular Science Laboratory (EMSL) housed at PNNL, for quantifying mineral reaction kinetics with CO2 under high temperature and pressure (supercritical) conditions. The computational analysis focus area involves numerical simulation of coupled, multi-scale processes associated with CO2 sequestration in geologic media, and the development of software to facilitate building and parameterizing conceptual and numerical models of subsurface reservoirs that represent geologic repositories for injected CO2. This report describes work in support of the computational analysis focus area. The computational analysis focus area currently consists of several collaborative research projects. These are all geared towards the development and application of conceptual and numerical models for geologic sequestration of CO2. The software being …
Date:
September 30, 2009
Creator:
Rockhold, Mark L.; Sullivan, E. C.; Murray, Christopher J.; Last, George V. & Black, Gary D.
Object Type:
Report
System:
The UNT Digital Library
DOJ's Civil Rights Division: Opportunities Exist to Improve Its Case Management System and Better Meet Its Reporting Needs
Correspondence issued by the Government Accountability Office with an abstract that begins "The Civil Rights Division (Division) of the Department of Justice (DOJ) is the primary federal entity charged with enforcing federal statutes prohibiting discrimination on the basis of race, sex, disability, religion, and national origin in such areas as voting, employment, housing, public accommodations, the rights of institutionalized persons, and education. Each year, the Division initiates thousands of matters, which may consist of the investigation of an allegation of discrimination, and participates in hundreds of cases to carry out its broad enforcement responsibilities. Over the past 20 years, the Division has used various case management systems to manage its workload. In October 2000, the Division implemented the Interactive Case Management System (ICM) as its official system to track, count, and capture performance measurement information for all matters and cases from their inception to their conclusion and to assist staff in their casework. According to Division documentation, ICM was also designed to serve as a tool for senior management to oversee the work of the Division and to assist senior managers in reporting accurate matter and case data at all levels of the organization, improving accountability, analyzing the Division's performance, …
Date:
September 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Effect of Concrete Waste Form Properties on Radionuclide Migration
Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation) the mechanism of contaminant release, the significance of contaminant release pathways, how waste form performance is affected by the full range of environmental conditions within the disposal facility, the process of waste form aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility, the effect of waste form aging on chemical, physical, and radiological properties and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the waste forms come in contact with groundwater. Numerous sets of tests were initiated in fiscal years (FY) 2006-2009 to evaluate (1) diffusion of iodine (I) and technetium (Tc) from concrete into uncontaminated soil after 1 and 2 years, (2) I and rhenium (Re) diffusion from contaminated soil into fractured concrete, (3) I and Re (set 1) and Tc (set 2) diffusion from fractured concrete into uncontaminated soil, (4) evaluate the moisture distribution profile within the sediment half-cell, (5) the reactivity and speciation of uranium (VI) (U(VI)) compounds in concrete porewaters, (6) the …
Date:
September 30, 2009
Creator:
Mattigod, Shas V.; Bovaird, Chase C.; Wellman, Dawn M.; Skinner, De'Chauna J.; Cordova, Elsa A. & Wood, Marcus I.
Object Type:
Report
System:
The UNT Digital Library
The Effectiveness of the Compton Radiography Snout Electron Deflection Yoke and its Application as an Electron Spectrometer
None
Date:
September 30, 2009
Creator:
Mackinnon, A. J.; Copsey, B. & Celeste, J.
Object Type:
Report
System:
The UNT Digital Library
Efficiency Improvement through Reduction in Friction and Wear in Powertrain Systems
The objective of this project is to improve the efficiency of truck drivelines through reduction of friction and parasitic losses in transmission and drive axles. Known efficiencies for these products exceeded 97 percent, so the task was not trivial. The project relied on a working relationship between modeling and hardware testing. Modeling was to shorten the development cycle by guiding the selection of materials, processes and strategies. Bench top and fixture tests were to validate the models. Modeling was performed at a world class, high academic level, but in the end, modeling did not impact the hardware development as much as intended. Insights leading to the most significant accomplishments came from bench top and fixture tests and full scale dynamometer tests. A key development in the project was the formulation of the implementation strategy. Five technical elements with potential to minimize friction and parasitic losses were identified. These elements included churning, lubrication, surface roughness, coatings and textures. An interesting fact is that both Caterpillar and Eaton independently converged on the same set of technical elements in formulating their implementation strategies. Exploiting technical elements of the implementation strategy had a positive impact on transmission and drive axle efficiencies. During one dynamometer …
Date:
September 30, 2009
Creator:
Killian, Michael
Object Type:
Report
System:
The UNT Digital Library
Emergency Preparedness: Improved Planning and Coordination Necessary for Development of Integrated Public Alert and Warning System
Testimony issued by the Government Accountability Office with an abstract that begins "A comprehensive system to alert the American people in times of hazard allows people to take action to save lives. The Federal Emergency Management Agency (FEMA) is the agency within the Department of Homeland Security (DHS) responsible for the current Emergency Alert System (EAS) and the development of the new Integrated Public Alert and Warning System (IPAWS). In this testimony, based on its report released today, GAO discusses (1) the current status of EAS, (2) the progress made by FEMA in implementing an integrated alert and warning system, and (3) coordination issues involved in implementing an integrated alert and warning system. GAO conducted a survey of states, reviewed FEMA and other documentation, and interviewed industry stakeholders and officials from federal agencies responsible for public alerting."
Date:
September 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Engineering Evaluation of Proposed Alternative Salt Transfer Method for the Molten Salt Reactor Experiement for the Oak Ridge National Laboratory
This evaluation was performed by Pro2Serve in accordance with the Technical Specification for an Engineering Evaluation of the Proposed Alternative Salt Transfer Method for the Molten Salt Reactor Experiment at the Oak Ridge National Laboratory (BJC 2009b). The evaluators reviewed the Engineering Evaluation Work Plan for Molten Salt Reactor Experiment Residual Salt Removal, Oak Ridge National Laboratory, Oak Ridge, Tennessee (DOE 2008). The Work Plan (DOE 2008) involves installing a salt transfer probe and new drain line into the Fuel Drain Tanks and Fuel Flush Tank and connecting them to the new salt transfer line at the drain tank cell shield. The probe is to be inserted through the tank ball valve and the molten salt to the bottom of the tank. The tank would then be pressurized through the Reactive Gas Removal System to force the salt into the salt canisters. The Evaluation Team reviewed the work plan, interviewed site personnel, reviewed numerous documents on the Molten Salt Reactor (Sects. 7 and 8), and inspected the probes planned to be used for the transfer. Based on several concerns identified during this review, the team recommends not proceeding with the salt transfer via the proposed alternate salt transfer method. The …
Date:
September 30, 2009
Creator:
Carlberg, Jon A.; Roberts, Kenneth T.; Kollie, Thomas G.; Little, Leslie E. & Brady, Sherman D.
Object Type:
Report
System:
The UNT Digital Library
Enrichment of By-Product Materials from Steel Pickling Acid Regeneration Plants (TRP 9942)
A new process for manufacturing an enriched, iron-based product (strontium hexaferrite) in existing steel pickling acid regeneration facilities was evaluated. Process enhancements and equipment additions were made to an existing acid regeneration plant to develop and demonstrate (via pilot scale testing and partial-capacity production trials) the viability of a patented method to produce strontium-based compounds that, when mixed with steel pickling acid and roasted, would result in a strontium hexaferrite powder precursor which could then be subjected to further heat treatment in an atmosphere that promotes rapid, relatively low-temperature formation of discrete strontium hexaferrite magnetic domains yielding an enriched iron-based product, strontium hexaferrite, that can be used in manufacturing hard ferrite magnets.
Date:
September 30, 2009
Creator:
Lu Swan, Delta Ferrites LLC
Object Type:
Report
System:
The UNT Digital Library
ENVIRONMENTAL PROBLEMS ASSOCIATED WITH DECOMMISSIONING THE CHERNOBYL NUCLEAR POWER PLANT COOLING POND
Decommissioning of nuclear power plants and other nuclear fuel cycle facilities has been an imperative issue lately. There exist significant experience and generally accepted recommendations on remediation of lands with residual radioactive contamination; however, there are hardly any such recommendations on remediation of cooling ponds that, in most cases, are fairly large water reservoirs. The literature only describes remediation of minor reservoirs containing radioactive silt (a complete closure followed by preservation) or small water reservoirs resulting in reestablishing natural water flows. Problems associated with remediation of river reservoirs resulting in flooding of vast agricultural areas also have been described. In addition, the severity of environmental and economic problems related to the remedial activities is shown to exceed any potential benefits of these activities. One of the large, highly contaminated water reservoirs that require either remediation or closure is Karachay Lake near the MAYAK Production Association in the Chelyabinsk Region of Russia where liquid radioactive waste had been deep well injected for a long period of time. Backfilling of Karachay Lake is currently in progress. It should be noted that secondary environmental problems associated with its closure are considered to be of less importance since sustaining Karachay Lake would have presented …
Date:
September 30, 2009
Creator:
Farfan, E.
Object Type:
Article
System:
The UNT Digital Library
Evaluation and Enhancement of Carbon Dioxide Flooding Through Sweep Improvement
Carbon dioxide displacement is a common improved recovery method applied to light oil reservoirs (30-45{degrees}API). The economic and technical success of CO{sub 2} floods is often limited by poor sweep efficiency or large CO{sub 2} utilization rates. Projected incremental recoveries for CO{sub 2} floods range from 7% to 20% of the original oil in place; however, actual incremental recoveries range from 9% to 15% of the original oil in place, indicating the potential for significant additional recoveries with improved sweep efficiency. This research program was designed to study the effectiveness of carbon dioxide flooding in a mature reservoir to identify and develop methods and strategies to improve oil recovery in carbon dioxide floods. Specifically, the project has focused on relating laboratory, theoretical and simulation studies to actual field performance in a CO{sub 2} flood in an attempt to understand and mitigate problems of areal and vertical sweep efficiency. In this work the focus has been on evaluating the status of existing swept regions of a mature CO{sub 2} flood and developing procedures to improve the design of proposed floods. The Little Creek Field, Mississippi has been studied through laboratory, theoretical, numerical and simulation studies in an attempt to relate performance …
Date:
September 30, 2009
Creator:
Hughes, Richard
Object Type:
Report
System:
The UNT Digital Library