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Sodium Fluozirconate Precipitation Process for Zirconium Fuels. Part 1. Laboratory Development
Precipitation, evaporation, and extraction feed preparation conditions are established for the removal of zirconium and fluoride from fuel dissolver product solutions by the addition of sodium formate. A sparingly soluble complex fluozirconate is formed. Ninety-five to 99% of the zirconium and fluoride is separated from the uranium losses of 0.1% or less. Chemical material balances, based on experimental data, were developed for two flowsheets. In one flowsheet, sufficient nitric acid is added to the combined wash solution and filtrate produced during the precipitation step to destroy the formate ion (which inhibits uranium extraction) and to prevent post-precipitation during the evaporation of these solutions. The other flowsheet calls for addition of sufficient nitric acid to destroy the formate ion, but not enough to prevent post- precipitation during the concentration step. Post-precipitation removes additional zirconium and fluoride, but necessitates an additional solids- separation step. (auth)
Date:
May 15, 1962
Creator:
Newby, B. J.
Object Type:
Report
System:
The UNT Digital Library
Demonstration of innovative applicatiions of technology for cost reductions to the CT-121 FGD process
The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT121 relative to competing technology.
Date:
May 15, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Weld Penetration and Defect Control
Highly engineered designs increasingly require the use of improved materials and sophisticated manufacturing techniques. To obtain optimal performance from these engineered products, improved weld properties and joint reliability are a necessarily. This requirement for improved weld performance and reliability has led to the development of high-performance welding systems in which pre-programmed parameters are specified before any welding takes place. These automated systems however lack the ability to compensate for perturbations which arise during the welding process. Hence the need for systems which monitor and control the in-process status of the welding process. This report discusses work carried out on weld penetration indicators and the feasibility of using these indicators for on-line penetration control.
Date:
May 15, 1992
Creator:
Chin, Bryan A.
Object Type:
Report
System:
The UNT Digital Library
Solar production of industrial process steam for the Lone Star Brewery. 80% review report
The solar steam system for the Lone Star Brewery is described in detail. It consists of a roof-mounted parabolic trough collector field heating Monsanto's Therminol T-55 heat transfer fluid, a solar-fired boiler, a heat transfer fluid circulation pump, and all the associated piping. The comparison of various collectors and heat transfer fluids surveyed is reviewed. Also included are discussions of the system performance analysis, economic analysis, safety analysis, data collection, and environmental impact assessment. Numerous drawings illustrate the system, particularly the parallel trough collectors. (LEW)
Date:
May 15, 1979
Creator:
Deffenbaugh, D. M.; Watkins, P. V.; Hugg, S. B.; Kulesz, J. J.; Decker, H. E. & Powell, R. C.
Object Type:
Report
System:
The UNT Digital Library
Development of tailored ceramics for geologic storage of nuclear wastes. Quarterly progress report, January 1-March 31, 1980
In the second quarter of activities on developing Tailored Ceramic waste forms for SRP waste compositions, emphasis was on the chemistry controlling the incorporation of the waste elements into the crystalline phases of the high-alumina content ceramic and the major factors affecting the consolidation process. Research on the design and synthesis of oxide and phosphate ceramic waste forms has continued with emphasis on fluorite-structure oxides and on rare earth phosphates with the monazite structure. Dissolution studies to date indicate that monazite is very stable.
Date:
May 15, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Safety Calculations for MsSRE
A number of conceivable reactivity accidents were analyzed, using conservatively pessimistic assumptions and approximations, to permit evaluation of reactor safety. Most of the calculations, which are described in detail, were performed by a digital kinetics program, MURGATROYD. Some analog analyses were also made. None of the accidents which were analyzed lead to catastrophic failure of the reactor, which is the primary consideration. Some internal damage to the reactor from undesirably high temperatures could result from extreme cold- slug accidents, premature criticality during filling, or uncontrolled rod withdrawal. Each of these accidents could happen only by compounded failure of protective devices, and in each case there exists means of effective corrective action independent of the primary protection, so that damage is unlikeIy. The calculated response to arbitrary ramp and step additions of reactivity show that damaging pressures could occur only if the addition is the equivalent of a step of about 1% delta k/k or greater. (auth)
Date:
May 15, 1962
Creator:
Haubenreich, P.N. & Engel, J.R.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of selected chemical processes for production of low-cost silicon. Phase III. Eighteenth quarterly progress report, January 1-March 31, 1980
Progress during this report period was marked by the initial operation of the Process Development Unit at about 50% of design capacity with indications that many aspects of the facility operated satisfactorily. However, a downstream constriction, the cause of which is being isolated, led to termination of the run after one-half hour of operation. In the light of observations made during earlier start-up efforts, several modifications of equipment and technique were made for improved operation. Vacuum outgassing experiments (850 to 1100/sup 0/C, 1 to 256 h) were carried out on miniplant-produced granules containing 360 and 3900 ppMw of zinc in the deposited silicon. Treatment of the data so that it can be extrapolated to the expected product of the Experimental Process System Development Unit awaits development of an appropriate model.
Date:
May 15, 1980
Creator:
Blocher, J.M. Jr. & Browning, M.F.
Object Type:
Report
System:
The UNT Digital Library
Innovative Clean Coal Technologies (ICCT): Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process
The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT121 relative to competing technology.
Date:
May 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Emerging materials for solar cell applications: electrodeposited CdTe. Final report, February 14, 1979-February 14, 1980
Thin film gold/polycrystalline cadmium telluride Schottky solar cells made by electrodepositing the semiconductor on an ITO-coated glass substrate serving also as an ohmic contact demonstrated an internal efficiency of 4% over 2 mm/sup 2/ areas. During the year being reported upon, Monosolar devoted mator attention to refining the electroplating process and determining the parameters governing CdTe film stoichiometry, grain size, substrate adhesion, and quality. UCLA acting as a Monosolar sub-contractor characterized both the CdTe films themselves and solar cells made from them. Techniques were developed for making measurements on films often less than 1 micron in thickness. The highest values achieved for efficiency parameters, not necessarily all in the same cell, were V/sub oc/ = 0.5 V, J/sub sc/ = 11 mA/cm/sup 2/, and fill factor = 0.55 before corrections in the absence of anti-reflection coatings. Typical resistivities for n-CdTe films were 10/sup 5/ ..cap omega..-cm. Lifetimes of about 10/sup -10/ sec were measured. Absorption coefficient of these films is in the order of 10/sup 4/ for lambda < 0.7 ..mu..m. Measured energy gap for these CdTe films is 1.55 eV, sightly higher than the 1.45 eV value for single crystal CdTe. The activation energy of the dominating trap level …
Date:
May 15, 1980
Creator:
Rod, R.L.; Bunshah, R.; Stafsudd, O.; Basol, B.M. & Nath, P.
Object Type:
Report
System:
The UNT Digital Library
Reactor Development Program Progress Report, April 1962
Research and development of water-cooled reactors are reported including work on EBWR and BORAX-V. Work on liquid metal cooled reactors is also reported in sections on general research and development, EBR-I and II, aud FARET. Other work is reported on genenal nuclear technology and advanced systems development. (J.R.D.)
Date:
May 15, 1962
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Operations plan for the Regional Seismic Test Network
The Regional Seismic Test Network program was established to provide a capability for detection of extremely sensitive earth movements. Seismic signals from both natural and man-made earth motions will be analyzed with the ultimate objective of accurately locating underground nuclear explosions. The Sandia National Laboratories, Albuquerque, has designed an unattended seismic station capable of recording seismic information received at the location of the seismometers installed as part of that specific station. A network of stations is required to increase the capability of determining the source of the seismic signal and the location of the source. Current plans are to establish a five-station seismic network in the United States and Canada. The Department of Energy, Nevada Operations Office, has been assigned the responsibility for deploying, installing, and operating these remote stations. This Operation Plan provides the basic information and tasking to accomplish this assignment.
Date:
May 15, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Podmoskovnaya Underground Coal Gasification Station
From abstract: "Survey of the Soviet effort in underground coal gasification and summarizes research conducted at the Podmoskovnaya Station until its close in 1963."
Date:
May 15, 1981
Creator:
Olness, D. U.
Object Type:
Report
System:
The UNT Digital Library
Air Force Aircraft: Preliminary Information on Air Force Tanker Leasing
Correspondence issued by the General Accounting Office with an abstract that begins "GAO addressed the Air Force's plan to replace a portion of its KC-135 aerial refueling tanker fleet with leased Boeing 767 aircraft. Although the Air Force has a long term requirement to replace its aging fleet of KC-135 tankers, the urgency of the need in the short term is unclear. The Air Force stated that the leasing arrangement would allow it to acquire new tankers three years earlier than through its most recent procurement plan. This would allow the Air Force to retire old, less capable KC-135s, thus saving maintenance costs on those aircraft. Because the Air Force is still negotiating the lease details, it could not provide information on the cost effectiveness of leasing aircraft instead of purchasing them. Although GAO has not taken a position on the overall policy of leasing versus purchasing defense equipment, it found that, from a cost standpoint, leasing is more expensive in the long run. Because the 767 aircraft is larger than the KC-135, there will be some infrastructure improvement costs, such as for building or modifying hangars, taxiways, and runway aprons. Additional costs would likely include simulators and project management. …
Date:
May 15, 2002
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Business Systems Modernization: DOD Continues to Improve Institutional Approach, but Further Steps Needed
A letter report issued by the Government Accountability Office with an abstract that begins "For decades, the Department of Defense (DOD) has not been successful in repeated attempts to modernize its timeworn business systems and operations. In 1995, we first designated DOD's business systems modernization as "high risk," and we continue to designate it as such today. As our research on successful public and private sector organizations has shown, attempting a large-scale systems modernization program in a large organization such as DOD without, among other things, a well-defined enterprise architecture and the associated investment management controls for implementing it often results in systems that are duplicative, stovepiped, non-integrated, and unnecessarily costly to manage, maintain, and operate. In May 2001, we made recommendations to the Secretary of Defense that provided the means for effectively developing and implementing an enterprise architecture and limiting systems investments until the department had a well-defined architecture and a corporate approach to investment control and decision making. In July 2001, the department initiated a business management modernization program to, among other things, develop a business enterprise architecture and establish the investment controls needed to effectively implement it. This effort was begun as part of the Secretary of …
Date:
May 15, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Financial Audit: Congressional Award Foundation's Fiscal Years 2007 and 2006 Financial Statements
A letter report issued by the Government Accountability Office with an abstract that begins "This report presents our opinion on the financial statements of the Congressional Award Foundation (the Foundation) for the fiscal years ended September 30, 2007, and 2006. These financial statements are the responsibility of the Foundation. This report also presents (1) our opinion on the effectiveness of the Foundation's related internal control as of September 30, 2007, and (2) the results of our tests of the Foundation's compliance in fiscal year 2007 with selected provisions of laws and regulations. We conducted our audit pursuant to section 107 of the Congressional Award Act, as amended (2 U.S.C. 807), and in accordance with U.S. generally accepted government auditing standards."
Date:
May 15, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Unemployed Older Workers: Many Face Long-Term Joblessness and Reduced Retirement Security
Testimony issued by the Government Accountability Office with an abstract that begins "Unemployment rates for workers of all ages have risen dramatically since the start of the recent recession in December 2007, and workers age 55 and over have faced particularly long periods of unemployment. The seasonally unadjusted unemployment rate for older workers increased from 3.1 percent in December 2007 to a high of 7.6 percent in February 2010, before it decreased to 6.0 percent in April 2012. As in prior recessions, smaller percentages of workers age 55 and over became unemployed in comparison with younger workers. Some researchers attribute older workers lower unemployment rates to the fact that older workers tend to have longer job tenure, and are consequently less likely to be laid off than younger workers."
Date:
May 15, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
DOD Business Systems Modernization: Progress in Establishing Corporate Management Controls Needs to Be Replicated Within Military Departments
A letter report issued by the Government Accountability Office with an abstract that begins "In 1995, GAO first designated the Department of Defense's (DOD) business systems modernization program as "high risk," and GAO continues to do so today. To assist in addressing this high-risk area, the Ronald W. Reagan National Defense Authorization Act for Fiscal Year 2005 contains provisions that are consistent with prior GAO investment management and enterprise architecture-related recommendations, and requires the department to submit annual reports to its congressional committees on its compliance with these provisions. The act also directs GAO to review each annual report. In response, GAO assessed the actions taken by DOD to comply with requirements of the act. To do so, GAO leveraged its recent reports on various aspects of the department's modernization management controls, and it reviewed, for example, the latest version of its business enterprise architecture and the associated transition plan and architecture federation strategy. GAO also interviewed key officials."
Date:
May 15, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
HUD Has Identified Performance Measures for Its Block Grant Programs, but Information on Impact Is Limited
Correspondence issued by the Government Accountability Office with an abstract that begins "Information on the overall effectiveness (or impact) of the CDBG and HOME programs is limited. According to HUD officials, the agency has faced challenges in evaluating the impact of CDBG and HOME because, among other things, such an evaluation would have to compare neighborhoods that received program assistance with those that did not. Our previous work has also identified the difficulties of evaluating the impact of block grant programs that do not represent a uniform package of activities or desired outcomes across the country, as well as the common problem of attributing differences in communities outcomes to the effect of a program in the absence of controls for other explanations. As a result, few comprehensive studies on the impact of the CDBG and HOME programs exist, but studies that focused on specific activities have generally found that each of the programs has made positive contributions. We identified two studies that attempted to examine the overall impact of the CDBG program on communities, but both studies encountered evaluation challenges due to the programs design. For example, a 1995 study that HUD considers the most comprehensive evaluation of CDBG suggests …
Date:
May 15, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Unmanned Aircraft Systems: Federal Actions Needed to Ensure Safety and Expand Their Potential Uses within the National Airspace System
A letter report issued by the Government Accountability Office with an abstract that begins "Government and private-sector interest is growing in unmanned aircraft systems (UAS) for use in a variety of missions such as U.S. border protection, hurricane research, law enforcement, and real estate photography. However, UASs can fly only after the Federal Aviation Administration (FAA) conducts a case-by-case safety analysis. GAO's research questions included (1) What are the current and potential uses and benefits of UASs? (2) What challenges exist in operating UASs safely and routinely in the national airspace system? and (3) What is the federal government's response to these challenges? To address these questions, GAO reviewed the literature, interviewed agency officials and aviation stakeholders, and surveyed 23 UAS experts."
Date:
May 15, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Flood Insurance: Emerging Opportunity to Better Measure Certain Results of the National Flood Insurance Program
A statement of record issued by the General Accounting Office with an abstract that begins "This testimony discusses the preliminary results of GAO's ongoing review of the National Flood Insurance Program (NFIP), which is run by the Federal Emergency Management Administration's (FEMA) Federal Insurance Administration (FIA) and Mitigation Directorate, a major component of the federal government's efforts to provide flood assistance. This program creates standards to minimize flood losses. GAO found that FEMA has several performance goals to improve program results, including increasing the number of insurance policies in force. Although these goals provide valuable insight into the degree to which the program has reduced flood losses, they do not assess the degree to which the most vulnerable residents--those living in flood-prone areas--participate in the program. Capturing data on the number of uninsured and insured structures in flood-prone areas can provide FEMA with another indication of how well the program is penetrating those areas with the highest flood risks, whether the financial consequences of floods in these areas are increasing or decreasing, and where marketing efforts can better be targeted. However, before participation rates can be used to measure the program's success, better data are needed on the total number …
Date:
May 15, 2001
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Motor Carrier Safety: Improvements to Drug Testing Programs Could Better Identify Illegal Drug Users and Keep Them off the Road
A letter report issued by the Government Accountability Office with an abstract that begins "Federal law requires commercial drivers to submit urine specimens for drug testing. The Federal Motor Carrier Safety Administration (FMCSA) is responsible for ensuring that motor carriers comply with these regulations. Recent reports have raised concerns that some drivers may not be tested, some may be tested but avoid detection, and some may test positive but continue to drive. GAO was asked to look at these challenges. This report reviews (1) the factors that contribute to challenges related to drug testing and (2) the various options that exist to address these challenges. GAO obtained information from a wide variety of stakeholders in the drug testing industry, and analyzed data from FMCSA and others to determine the potential effectiveness of various options."
Date:
May 15, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Homeland Security: Observations on DHS and FEMA Efforts to Prepare for and Respond to Major and Catastrophic Disasters and Address Related Recommendations and Legislation
Testimony issued by the Government Accountability Office with an abstract that begins "As a new hurricane season approaches, the Federal Emergency Management Agency (FEMA) within the Department of Homeland Security (DHS) faces the simultaneous challenges of preparing for the season and implementing the reorganization and other provisions of the Post-Katrina Emergency Management Reform Act of 2006. The Act stipulates major changes to FEMA intended to enhance its preparedness for and response to catastrophic and major disasters. As GAO has reported, FEMA and DHS face continued challenges, including clearly defining leadership roles and responsibilities, developing necessary disaster response capabilities, and establishing accountability systems to provide effective services while protecting against waste, fraud, and abuse. This testimony (1) summarizes GAO's findings on these challenges and FEMA's and DHS's efforts to address them; and (2) discusses several disaster management issues for continued congressional attention."
Date:
May 15, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Financial Audit: Congressional Award Foundation's Fiscal Years 2005 and 2004 Financial Statements
A letter report issued by the Government Accountability Office with an abstract that begins "This report presents our opinion on the financial statements of the Congressional Award Foundation for the fiscal years ended September 30, 2005, and 2004. These financial statements are the responsibility of the Congressional Award Foundation. This report also presents (1) our opinion on the effectiveness of the Foundation's related internal control as of September 30, 2005, and (2) our conclusion on the Foundation's compliance in fiscal year 2005 with selected provisions of laws and regulations we tested. We conducted our audit pursuant to section 107 of the Congressional Award Act, as amended (2 U.S.C. 807), and in accordance with U.S. generally accepted government auditing standards. This report also includes our determination required under section 104(c)(2)(A) of the Act (2 U.S.C. 804(c)(2)(A)) relating to the Foundation's financial operations."
Date:
May 15, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Rebuilding Iraq
Correspondence issued by the General Accounting Office with an abstract that begins "Rebuilding Iraq is a U.S. national security priority. As part of this effort, Congress appropriated $79 billon in emergency supplemental funds for fiscal year 2003 for military operations and Iraq's reconstruction, including humanitarian relief, peacekeeping, and economic and political reform. We have issued reports on similar programs to rebuild countries in the former Yugoslavia, the former Soviet Union, and other locations (see attachment III for a listing of previous GAO reports). Based on this work, we have developed short papers to help congressional decision-makers think about and prioritize the range of issues related to rebuilding Iraq."
Date:
May 15, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library