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2 x 2 Polyethylene Reflected and Moderated Highly Enriched Uranium System with Rhenium
The 2 × 2 array HEU-Re experiment was performed on the Planet universal critical assembly machine on November 4th, 2003 at the Los Alamos Critical Experiments Facility (LACEF) at Los Alamos National Laboratory (LANL). For this experiment, there were 10 ½ units, each full unit containing four HEU foils and two rhenium foils. The top unit contained only two HEU foils and two rhenium foils. A total of 42 HEU foils were used for this experiment. Rhenium is a desirable cladding material for space nuclear power applications. This experiment consisted of HEU foils interleaved with rhenium foils and is moderated and reflected by polyethylene plates. A unit consisted of a polyethylene plate, which has a recess for rhenium foils, and four HEU foils in a single layer in the top recess of each polyethylene plate. The Planet universal criticality assembly machine has been previously used in experiments containing HEU foils interspersed with SiO2 (HEU-MET-THERM-001), Al (HEU-MET-THERM-008), MgO (HEU-MET-THERM-009), Gd foils (HEU-MET-THERM-010), 2 × 2 × 26 Al (HEU-MET-THERM-012), Fe (HEU-MET-THERM-013 and HEU-MET-THERM-015), 2 × 2 × 23 SiO2 (HEU-MET-THERM-014), 2 × 2 × 11 hastalloy plates (HEU-MET-THERM-016), and concrete (HEU-MET-THERM-018). The 2 × 2 array of HEU-Re is considered acceptable …
Date:
September 1, 2010
Creator:
Ellis, A. Nichole; Hutchinson, Jesson; Bess, John D.; Polyakov, Dmitry N.; Glushkov, Evgeny S. & Glushkov, Alexey E.
System:
The UNT Digital Library
10-MW Supercritical-CO2 Turbine (Fact Sheet)
National Renewable Energy Laboratory is one of the 2012 SunShot CSP R&D awardees for their advanced power cycles. This fact sheet explains the motivation, description, and impact of the project.
Date:
September 2012
Creator:
unknown
System:
The UNT Digital Library
100-F Target Analyte List Development for Soil
This report documents the process used to identify source area target analytes in support of the 100-F Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date:
September 18, 2012
Creator:
Ovink, R.
System:
The UNT Digital Library
100-K Target Analyte List Development for Soil
This report documents the process used to identify source area target analytes in support of the 100-K Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date:
September 18, 2012
Creator:
Ovink, R.
System:
The UNT Digital Library
100-N Area Decision Unit Target Analyte List Development for Soil
This report documents the process used to identify source area target analytes in support of the 100-N Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date:
September 18, 2012
Creator:
Ovink, R.
System:
The UNT Digital Library
100-NR-2 Apatite Treatability Test: High-Concentration Calcium-Citrate-Phosphate Solution Injection for In Situ Strontium-90 Immobilization
Following an evaluation of potential strontium-90 (90Sr) treatment technologies and their applicability under 100-NR-2 hydrogeologic conditions, the U.S. Department of Energy (DOE), Fluor Hanford, Inc. (now CH2M Hill Plateau Remediation Company [CHPRC]), Pacific Northwest National Laboratory, and the Washington State Department of Ecology agreed that the long-term strategy for groundwater remediation at the 100-N Area should include apatite as the primary treatment technology. This agreement was based on results from an evaluation of remedial alternatives that identified the apatite permeable reactive barrier (PRB) technology as the approach showing the greatest promise for reducing 90Sr flux to the Columbia River at a reasonable cost. This letter report documents work completed to date on development of a high-concentration amendment formulation and initial field-scale testing of this amendment solution.
Date:
September 1, 2010
Creator:
Vermeul, Vincent R.; Fritz, Brad G.; Fruchter, Jonathan S.; Szecsody, James E. & Williams, Mark D.
System:
The UNT Digital Library
200-BP-1 Prototype Hanford Barrier -- 15 Years of Performance Monitoring
Monitoring is an essential component of engineered barrier system design and operation. A composite capacitive cover, including a capillary break and an evapotranspiration (ET) barrier at the Hanford Site, is generating data that can be used to help resolve these issues. The prototype Hanford barrier was constructed over the 216-B-57 Crib in 1994 to evaluate surface-barrier constructability, construction costs, and physical and hydrologic performance at the field scale. The barrier has been routinely monitored between November 1994 and September 1998 as part of a Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) treatability test of barrier performance for the 200 BP 1 Operable Unit. Since FY 1998, monitoring has focused on a more limited set of key water balance, stability, and biotic parameters. In FY 2009, data collection was focused on: (1) water-balance monitoring, consisting of precipitation, runoff, soil moisture storage, and drainage measurements with evapotranspiration calculated by difference; (2) stability monitoring, consisting of asphalt-layer-settlement, basalt-side-slope-stability, and surface-elevation measurements; (3) vegetation dynamics; and (4) animal use. September 2009 marked 15 years since the start of monitoring and the collection of performance data. This report describes the results of monitoring activities during the period October 1, 2008, through September …
Date:
September 30, 2011
Creator:
Ward, Anderson L.; Draper, Kathryn E.; Link, Steven O. & Clayton, Ray E.
System:
The UNT Digital Library
L-325 Sagebrush Habitat Mitigation Project: Final Compensation Area Monitoring Report
This document provides a review and status of activities conducted in support of the Fluor Daniel Hanford Company (Fluor), now Mission Support Alliance (MSA), Mitigation Action Plan (MAP) for Project L-325, Electrical Utility Upgrades (2007). Three plantings have been installed on a 4.5-hectare mitigation area to date. This review provides a description and chronology of events, monitoring results, and mitigative actions through fiscal year (FY) 2012. Also provided is a review of the monitoring methods, transect layout, and FY 2012 monitoring activities and results for all planting years. Planting densities and performance criteria stipulated in the MAP were aimed at a desired future condition (DFC) of 10 percent mature sagebrush (Artemisia tridentata ssp wyomingensis) cover. Current recommendations for yielding this DFC are based upon a conceptual model planting of 1000 plants/ha (400/ac) exhibiting a 60-percent survival rate after 5 monitoring years (DOE 2003). Accordingly, a DFC after 5 monitoring years would not be less than 600 plants/ha (240/ac). To date, about 8700 sagebrush plants have been grown and transplanted onto the mitigation site. Harsh site conditions and low seedling survival have resulted in an estimated 489 transplants/ha on the mitigation site, which is 111 plants/ha short of the target DFC. …
Date:
September 26, 2013
Creator:
Durham, Robin E. & Becker, James M.
System:
The UNT Digital Library
501(c)(3)s and Campaign Activity: Analysis Under Tax and Campaign Finance Laws
From Summary: "This report examines the restrictions imposed on campaign activity by Section 501(c)(3) organizations under the tax and campaign finance laws."
Date:
September 10, 2013
Creator:
Lunder, Erika, L. & Whitaker, L. Paige
System:
The UNT Digital Library
2006 National Ambient Air Quality Standards (NAAQS) for Fine Particulate Matter (PM2.5): Designating Nonattainment Areas
This report summarizes and describes the EPA's (Environmental Protection Agency) final revisions to the NAAQS (National Ambient Air Quality Standards). The summary also explores how the revisions are contentious in certain areas that may not be meeting those standards which materializes as congressional oversight.
Date:
September 7, 2010
Creator:
Esworthy, Robert
System:
The UNT Digital Library
2009 Groundwater Monitoring Report Central Nevada Test Area, Corrective Action Unit 443
This report presents the 2009 groundwater monitoring results collected by the U.S. Department of Energy (DOE) Office of Legacy Management (LM) for the Central Nevada Test Area (CNTA) Subsurface Corrective Action Unit (CAU) 443. Responsibility for the environmental site restoration of CNTA was transferred from the DOE Office of Environmental Management to LM on October 1, 2006. The environmental restoration process and corrective action strategy for CAU 443 are conducted in accordance with the Federal Facility Agreement and Consent Order entered into by DOE, the U.S. Department of Defense, and the State of Nevada. The corrective action strategy for the site includes proof-of-concept monitoring in support of site closure. This report summarizes investigation activities associated with CAU 443 that were conducted at the site from October 2008 through December 2009. It also represents the first year of the enhanced monitoring network and begins the new 5-year proof-of-concept monitoring period that is intended to validate the compliance boundary
Date:
September 1, 2010
Creator:
unknown
System:
The UNT Digital Library
2009 Site Environmental Report
Each year, Brookhaven National Laboratory (BNL) prepares an annual Site Environmental Report (SER) in accordance with DOE Order 231.1A, Environment, Safety and Health Reporting of the U.S. Department of Energy. The report is written to inform the public, regulators, employees, and other stakeholders of BNL's environmental performance during the calendar year in review. The SER summarizes environmental data; environmental management performance; compliance with applicable DOE, federal, state, and local regulations; and compliance, restoration, and surveillance monitoring program performance. BNL has prepared annual SERs since 1971 and has documented nearly all of its environmental history since the Laboratory's inception in 1947. The report is available in print and as a downloadable file on the BNL web page at http://www.bnl.gov/ewms/ser/. A summary of the SER is also prepared each year to provide a general overview of the report, and is distributed with a CD of the full report.
Date:
September 30, 2010
Creator:
Ratel, K.M. & Laboratory, Brookhaven National
System:
The UNT Digital Library
2010 GLHHFTS Fish Tissue Data Dictionary for Mercury, PFC, PBDE, and PCBs
A document containing fish tissue results from the 2010 Great Lakes Human Health Fish Tissue Study.
Date:
September 2014
Creator:
United States. Office of Science and Technology.
System:
The UNT Digital Library
2010 Northwest Federal Market Assessment Report
The primary intent of this market assessment is to provide insights on the effectiveness of current energy efficiency and renewable energy program offerings available to Federal sites in the region. The level of detail, quality and currency of the data used in this market assessment varies significantly by Federal agency and energy efficiency service provider. Limited access to some Federal sites, limited availability of key points of contact, time/resource constraints, and other considerations limited the total number of Federal agencies and energy efficiency service providers participating in the survey.
Date:
September 1, 2011
Creator:
Scanlon, Tim & Sandusky, William F.
System:
The UNT Digital Library
The 2010 Oil Spill: Natural Resource Damage Assessment Under the Oil Pollution Act
The 2010 Deepwater Horizon oil spill leaked an estimated 4.1 million barrels of oil into the Gulf of Mexico, damaging the waters, shores, and marshes, and the fish and wildlife that live there. When resources in the public trust are harmed by contamination, federal, state, foreign, and tribal governments may seek compensation for damage to natural resources under certain laws. This is done in two steps: first, by assessing the harm; then, by determining how and what restoration will take place. Compensation for natural resource damage is intended to restore the natural resources to their condition before the damage and to compensate the public for the lost use of those resources. This report discusses legislation that provides a framework for assessing and mitigating the damage caused by such spills.
Date:
September 8, 2010
Creator:
Alexander, Kristina
System:
The UNT Digital Library
2010 Remediation Effectiveness Report for the U.S. Department of Energy Oak Ridge Reservation, Oak Ridge, Tennessee - Data and Evaluations
Under the requirements of the Oak Ridge Reservation (ORR) Federal Facility Agreement (FFA) established between the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency, (EPA) and the Tennessee Department of Environment and Conservation (TDEC) in 1992, all environmental restoration activities on the ORR are performed in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). Since the 1990s, the environmental restoration activities have experienced a gradual shift from characterization to remediation. As this has occurred, it has been determined that the assessment of the individual and cumulative performance of all ORR CERCLA remedial actions (RAs) is most effectively tracked in a single document. The Remediation Effectiveness Report (RER) is an FFA document intended to collate all ORR CERCLA decision requirements, compare pre- and post-remediation conditions at CERCLA sites, and present the results of any required post-decision remediation effectiveness monitoring. First issued in 1997, the RER has been reissued annually to update the performance histories of completed actions and to add descriptions of new CERCLA actions. Monitoring information used in the 2010 RER to assess remedy performance was collected and/or compiled by DOE's Water Resources Restoration Program (WRRP). Only data used to assess performance of …
Date:
September 1, 2010
Creator:
Bechtel Jacobs
System:
The UNT Digital Library
2010 River Corridor Closure Contractor Revegetation and Mitigation Monitoring Report
This report documents eh status of revegetation projects and natural resources mitigation efforts conducted for remediated waste sites and other activities associated with CERLA cleanup of National Priorities List waste sites at Hanford. This report contains vegetation monitoring data that were collected in the spring and summer of 2010 from the River Corridor Closure Contract’s revegetation and mitigation areas on the Hanford Site.
Date:
September 30, 2010
Creator:
Lindsey, C. T. & Johnson, A. L.
System:
The UNT Digital Library
The 2011 Mileage-Based User Fee Symposium
Report on Mileage-Based User Fees from the third annual two-day Symposium on Mileage-Based User Fees. Three main topics are addressed in the report: the most likely way to implement mileage-based user fees, state-level research and implementation on mileage-based user fees, and public acceptance of mileage-based user fees.
Date:
September 2011
Creator:
Goodin, Ginger; Wood, Nicholas & Baker, Richard T.
System:
The Portal to Texas History
2011 SAPHIRE 8 Software Quality Assurance Status Report
The Software Quality Assurance engineer position was created in fiscal year 2011 to better maintain and improve the quality of the SAPHIRE 8 development program. This year's Software Quality Assurance tasks concentrated on developing the framework of the SQA program. This report reviews the accomplishments and recommendations for each of the subtasks set forth for JCN V6059: (1) Reviews, Tests, and Code Walkthroughs; (2) Data Dictionary; (3) Metrics; (4) Requirements Traceability Matrix; (5) Provide Oversight on SAPHIRE QA Activities; and (6) Support NRC Presentations and Meetings.
Date:
September 1, 2011
Creator:
Vedros, Kurt G.
System:
The UNT Digital Library
2011 Site Environmental Report
N/A
Date:
September 1, 2012
Creator:
Ratel, K. M.; Pohlot, P.; Lee, R.; Williams, J.; Remien, J.; Green, T. et al.
System:
The UNT Digital Library
2013 LIDAR Campaign at Buena Vista Wind Farm: An Examination of Hill Speedup Flows
None
Date:
September 25, 2013
Creator:
Wharton, S; Qualley, G; Newman, J & Miller, W
System:
The UNT Digital Library
2013 LLNL Nuclear Forensics Summer Program
None
Date:
September 26, 2013
Creator:
Kersting, A. B.
System:
The UNT Digital Library
The 2016 G-20 Summit
This report discusses the 2016 G-20 summit where the leaders of the Group of Twenty (G-20) countries met in Hangzhou, China.
Date:
September 8, 2016
Creator:
Nelson, Rebecca M.
System:
The UNT Digital Library
2017 Hurricanes and Army Corps of Engineers: Background for Flood Response and Recovery
This report outlines the role of the U.S. Army Corps of Engineers in hurricane disaster relief and recovery. This role encompasses emergency response to floods and general disaster recovery, maintaining or repairing flood control structures such as dams that they operate as well as assisting in the repair of non-federally owned flood control structures. Recent activities of the Corps during and after Hurricanes Harvey and Irma are discussed.
Date:
September 15, 2017
Creator:
Carter, Nicole T. & Stern, Charles V.
System:
The UNT Digital Library