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Nuclear Energy: NRC Has Made Progress in Implementing Its Reactor Oversight and Licensing Processes but Continues to Face Challenges

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The Nuclear Regulatory Commission (NRC) is responsible for overseeing the nation's 104 commercial nuclear power reactors to ensure they are operated safely. Since 2000, NRC has used a formal Reactor Oversight Process (ROP) to oversee safety. NRC is also responsible for licensing the construction and operation of new reactors. Electric power companies have announced plans to submit 20 applications in the next … more
Date: October 3, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Agricultural Quarantine Inspection Program: Management Problems May Increase Vulnerability of U.S. Agriculture to Foreign Pests and Diseases

Description: Testimony issued by the Government Accountability Office with an abstract that begins "U.S. agriculture generates over $1 trillion in economic activity annually, but concerns exist about its vulnerability to foreign pests and diseases. Under the agricultural quarantine inspection (AQI) program, passengers and cargo are inspected at U.S. ports of entry to intercept prohibited material and pests. The Homeland Security Act of 2002 transferred responsibility for inspections from the U.S. Department… more
Date: October 3, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Software Engineering Processes Used to Develop the NIF Integrated Computer Control System

Description: We have developed a new target platform to study Laser Plasma Interaction in ignition-relevant condition at the Omega laser facility (LLE/Rochester)[1]. By shooting an interaction beam along the axis of a gas-filled hohlraum heated by up to 17 kJ of heater beam energy, we were able to create a millimeter-scale underdense uniform plasma at electron temperatures above 3 keV. Extensive Thomson scattering measurements allowed us to benchmark our hydrodynamic simulations performed with HYDRA [1]. As… more
Date: October 3, 2007
Creator: Ludwigsen, A P; Carey, R W; Demaret, R D; Lagin, L J; Reddi, U P & Van Arsdall, P J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Target Diagnostic Instrument-Based Controls Framework for the National Ignition Facility (NIF)

Description: The extreme physics of targets shocked by NIF's 192-beam laser are observed by a diverse suite of diagnostics including optical backscatter, time-integrated and gated X-ray sensors, and laser velocity interferometry. Diagnostics to diagnose fusion ignition implosion and neutron emissions are being planned. Many diagnostics will be developed by collaborators at other sites, but ad hoc controls could lead to unreliable and costly operations. An instrument-based controls (I-BC) framework for both … more
Date: October 3, 2007
Creator: Shelton, R. T.; O'Brien, D. W.; Kamperschroer, J. H. & Nelson, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CRITICALITY CURVES FOR PLUTONIUM HYDRAULIC FLUID MIXTURES

Description: This Calculation Note performs and documents MCNP criticality calculations for plutonium (100% {sup 239}Pu) hydraulic fluid mixtures. Spherical geometry was used for these generalized criticality safety calculations and three geometries of neutron reflection are: {sm_bullet}bare, {sm_bullet}1 inch of hydraulic fluid, or {sm_bullet}12 inches of hydraulic fluid. This document shows the critical volume and critical mass for various concentrations of plutonium in hydraulic fluid. Between 1 and 2 ga… more
Date: October 3, 2007
Creator: WD, WITTEKIND
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CAD Model and Visual Assisted Control System for NIF Target Area Positioners

Description: The National Ignition Facility (NIF) target chamber contains precision motion control systems that reach up to 6 meters into the target chamber for handling targets and diagnostics. Systems include the target positioner, an alignment sensor, and diagnostic manipulators (collectively called positioners). Target chamber shot experiments require a variety of positioner arrangements near the chamber center to be aligned to an accuracy of 10 micrometers. Positioners are some of the largest devices i… more
Date: October 3, 2007
Creator: Tekle, E. A.; Wilson, E. F. & Paik, T. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

NIF ICCS Test Controller for Automated & Manual Testing

Description: The National Ignition Facility (NIF) Integrated Computer Control System (ICCS) is a large (1.5 MSLOC), hierarchical, distributed system that controls all aspects of the NIF laser [1]. The ICCS team delivers software updates to the NIF facility throughout the year to support shot operations and commissioning activities. In 2006, there were 48 releases of ICCS: 29 full releases, 19 patches. To ensure the quality of each delivery, thousands of manual and automated tests are performed using the ICC… more
Date: October 3, 2007
Creator: Zielinski, J S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Scalable File Systems for High Performance Computing Final Report

Description: Simulations of mode I interlaminar fracture toughness tests of a carbon-reinforced composite material (BMS 8-212) were conducted with LSDYNA. The fracture toughness tests were performed by U.C. Berkeley. The simulations were performed to investigate the validity and practicality of employing decohesive elements to represent interlaminar bond failures that are prevalent in carbon-fiber composite structure penetration events. The simulations employed a decohesive element formulation that was veri… more
Date: October 3, 2007
Creator: Brandt, S A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Capture and Storage

Description: Carbon capture and sequestration (CCS) is the long-term isolation of carbon dioxide from the atmosphere through physical, chemical, biological, or engineered processes. This includes a range of approaches including soil carbon sequestration (e.g., through no-till farming), terrestrial biomass sequestration (e.g., through planting forests), direct ocean injection of CO{sub 2} either onto the deep seafloor or into the intermediate depths, injection into deep geological formations, or even direct … more
Date: October 3, 2007
Creator: Friedmann, S.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

EMSL Bimonthly Report: June 2007 through July 2007

Description: The W.R. Wiley Environmental Molecular Sciences Laboratory (EMSL) is a U.S. Department of Energy (DOE) national scientific user facility located at Pacific Northwest National Laboratory (PNNL) in Richland, Washington. PNNL operates EMSL for the DOE Office of Biological and Environmental Research. At one location, EMSL offers a comprehensive array of leading-edge resources in six research facilities. Access to the capabilities and instrumentation in EMSL facilities is obtained through a peer-rev… more
Date: October 3, 2007
Creator: Showalter, Mary Ann
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Demographics of 2007 TDNA Board of Directors]

Description: Texas Daily Newspaper Association's Demographics of 2007 Board of Directors. A map of the state of Texas with the locations of TDNA board members, their home town and where their newspapers circulate. The key on the left side corresponds with the map, the number, their average circulations per week, the newspaper company, and the board member who is apart of TDNA.
Date: October 3, 2007
Creator: Texas Daily Newspaper Association
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

[2007 Election Timetable for 2008 Board of Directors]

Description: The 2007 election timetable for the Texas Daily Newspaper Association 2008 Board of Directors starting in October 15, 2007 and going until November 27, 2007. The first item on the agenda are letters to the TDNA president outlining the nomination process, with the news release announcing the new board members of 2008.
Date: October 3, 2007
Creator: Texas Daily Newspaper Association
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Control of Asymmetric Magnetic Perturbations in Tokamaks

Description: The sensitivity of tokamak plasmas to very small deviations from the axisymmetry of the magnetic field |δ→(over)Β/→(over)Β|≈ 10–4 is well known. What was not understood until very recently is the importance of the perturbation to the plasma equilibrium in assessing the effects of externally produced asymmetries in the magnetic field, even far from a stability limit. DIII-D and NSTX experiments find that when the deleterious effects of asymmetries are mitigated, the external asymmetric field was… more
Date: October 3, 2007
Creator: Park, Jong-kyu; Schaffer, Michael J.; Menard, Jonathan E. & Boozer, Allen H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactivity-Worth Estimates of the Osmose Samples in the Minerve Reactor r1-uo2 Configuration.

Description: An initial series of calculations of the reactivity-worth of the OSMOSE samples in the MINERVE reactor with the R1-UO2 core configuration were completed. The reactor model was generated using the REBUS code developed at Argonne National Laboratory. The calculations are based on the specifications for fabrication, so they are considered preliminary until sampling and analysis have been completed on the fabricated samples. The estimates indicate a range of reactivity effect from -22 pcm to +25 pc… more
Date: October 3, 2007
Creator: Klann, R. T. & Perret, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electron Cooling and Electron-Ion Colliders at Bnl.

Description: Superconducting Energy Recovery Linacs (ERL) have significant potential uses in various fields, including High Energy Physics and Nuclear Physics. Brookhaven National Laboratory (BNL) is pursuing some of the potential applications in this area and the technology issues that are associated with these applications. The work addressed in this paper is carried out at BNL towards applications in electron cooling of high-energy hadron beams and electron-nucleon colliders. The common issues for these … more
Date: October 3, 2007
Creator: Ben-Zvi, Ilan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

German Foreign and Security Policy: Trends and Transatlantic Implications

Description: This report provides the trends and transatlantic implications of the German foreign and security policy, noting that Under Merkel's leadership, Germany has sought to boost transatlantic cooperation in areas ranging from economic and trade relations, climate change policy, and global counter-terrorism and non-proliferation policy, to peacekeeping, reconstruction and stabilization efforts in Afghanistan, the Middle East, Africa, and the Balkans.
Date: October 3, 2007
Creator: Belkin, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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