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OPEN AIR DEMOLITION OF FACILITIES HIGHLY CONTAMINATED WITH PLUTONIUM
The demolition of highly contaminated plutonium buildings usually is a long and expensive process that involves decontaminating the building to near free- release standards and then using conventional methods to remove the structure. It doesn't, however, have to be that way. Fluor has torn down buildings highly contaminated with plutonium without excessive decontamination. By removing the select source term and fixing the remaining contamination on the walls, ceilings, floors, and equipment surfaces; open-air demolition is not only feasible, but it can be done cheaper, better (safer), and faster. Open-air demolition techniques were used to demolish two highly contaminated buildings to slab-on-grade. These facilities on the Department of Energy's Hanford Site were located in, or very near, compounds of operating nuclear facilities that housed hundreds of people working on a daily basis. To keep the facilities operating and the personnel safe, the projects had to be creative in demolishing the structures. Several key techniques were used to control contamination and keep it within the confines of the demolition area: spraying fixatives before demolition; applying fixative and misting with a fine spray of water as the buildings were being taken down; and demolishing the buildings in a controlled and methodical manner. In …
Date:
May 31, 2007
Creator:
LLOYD, E.R.
Object Type:
Article
System:
The UNT Digital Library
Optimal Real-time Dispatch for Integrated Energy Systems
This report describes the development and application of a dispatch optimization algorithm for integrated energy systems (IES) comprised of on-site cogeneration of heat and electricity, energy storage devices, and demand response opportunities. This work is intended to aid commercial and industrial sites in making use of modern computing power and optimization algorithms to make informed, near-optimal decisions under significant uncertainty and complex objective functions. The optimization algorithm uses a finite set of randomly generated future scenarios to approximate the true, stochastic future; constraints are included that prevent solutions to this approximate problem from deviating from solutions to the actual problem. The algorithm is then expressed as a mixed integer linear program, to which a powerful commercial solver is applied. A case study of United States Postal Service Processing and Distribution Centers (P&DC) in four cities and under three different electricity tariff structures is conducted to (1) determine the added value of optimal control to a cogeneration system over current, heuristic control strategies; (2) determine the value of limited electric load curtailment opportunities, with and without cogeneration; and (3) determine the trade-off between least-cost and least-carbon operations of a cogeneration system. Key results for the P&DC sites studied include (1) in …
Date:
May 31, 2007
Creator:
Firestone, Ryan Michael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Oral History Interview with Frank Herzog, May 31, 2007
The National Museum of the Pacific War presents an interview with Frank Herzog. Herzog joined the Army in April of 1943. He trained in the Signal Corps to work as a lineman. In October of 1943 he traveled to England. He provides details of his travels and accommodations overseas, aboard the troop ship Alexandria. In October Herzog was assigned to an Army Air Forces B-26 unit and prepared for the Normandy landings scheduled for June of 1944. They traveled to a chateau in Northern France, where he worked with the Red Cross as a baker. He shares his experiences at the base in France, watching the B-26s, hearing the machine guns and witnessing bombings by the Germans. He completed infantry training in England, though Germany surrendered before he went to the front lines. Herzog served as a POW guard after the war ended. He remained a Private throughout his service and was discharged 1 January 1946.
Date:
May 31, 2007
Creator:
Herzog, Frank
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Frank Herzog, May 31, 2007
The National Museum of the Pacific War presents an interview with Frank Herzog. Herzog joined the Army in April of 1943. He trained in the Signal Corps to work as a lineman. In October of 1943 he traveled to England. He provides details of his travels and accommodations overseas, aboard the troop ship Alexandria. In October Herzog was assigned to an Army Air Forces B-26 unit and prepared for the Normandy landings scheduled for June of 1944. They traveled to a chateau in Northern France, where he worked with the Red Cross as a baker. He shares his experiences at the base in France, watching the B-26s, hearing the machine guns and witnessing bombings by the Germans. He completed infantry training in England, though Germany surrendered before he went to the front lines. Herzog served as a POW guard after the war ended. He remained a Private throughout his service and was discharged 1 January 1946.
Date:
May 31, 2007
Creator:
Herzog, Frank
Object Type:
Text
System:
The Portal to Texas History
Pay Equity Legislation in the 110th Congress
None
Date:
May 31, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 115, No. 106, Ed. 1 Thursday, May 31, 2007
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 2007
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Polk County Enterprise (Livingston, Tex.), Vol. 125, No. 43, Ed. 1 Thursday, May 31, 2007
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2007
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 37, No. 22, Ed. 1 Thursday, May 31, 2007
Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with extensive advertising.
Date:
May 31, 2007
Creator:
Judson, Mary Henkel
Object Type:
Newspaper
System:
The Portal to Texas History
Probabilistic Fracture Mechanics Evaluation of Selected Passive Components – Technical Letter Report
This report addresses the potential application of probabilistic fracture mechanics computer codes to support the Proactive Materials Degradation Assessment (PMDA) program as a method to predict component failure probabilities. The present report describes probabilistic fracture mechanics calculations that were performed for selected components using the PRO-LOCA and PRAISE computer codes. The calculations address the failure mechanisms of stress corrosion cracking, intergranular stress corrosion cracking, and fatigue for components and operating conditions that are known to make particular components susceptible to cracking. It was demonstrated that the two codes can predict essentially the same failure probabilities if both codes start with the same fracture mechanics model and the same inputs to the model. Comparisons with field experience showed that both codes predict relatively high failure probabilities for components under operating conditions that have resulted in field failures. It was found that modeling assumptions and inputs tended to give higher calculated failure probabilities than those derived from data on field failures. Sensitivity calculations were performed to show that uncertainties in the probabilistic calculations were sufficiently large to explain the differences between predicted failure probabilities and field experience.
Date:
May 31, 2007
Creator:
Simonen, Fredric A.; Doctor, Steven R.; Gosselin, Stephen R.; Rudland, David L.; Xu, H.; Wilkowski, Gery M. et al.
Object Type:
Report
System:
The UNT Digital Library
Production of Endohedral Fullerenes by Ion Implantation
The empty interior cavity of fullerenes has long been touted for containment of radionuclides during in vivo transport, during radioimmunotherapy (RIT) and radioimaging for example. As the chemistry required to open a hole in fullerene is complex and exceedingly unlikely to occur in vivo, and conformational stability of the fullerene cage is absolute, atoms trapped within fullerenes can only be released during extremely energetic events. Encapsulating radionuclides in fullerenes could therefore potentially eliminate undesired toxicity resulting from leakage and catabolism of radionuclides administered with other techniques. At the start of this project however, methods for production of transition metal and p-electron metal endohedral fullerenes were completely unknown, and only one method for production of endohedral radiofullerenes was known. They therefore investigated three different methods for the production of therapeutically useful endohedral metallofullerenes: (1) implantation of ions using the high intensity ion beam at the Oak Ridge National Laboratory (ORNL) Surface Modification and Characterization Research Center (SMAC) and fullerenes as the target; (2) implantation of ions using the recoil energy following alpha decay; and (3) implantation of ions using the recoil energy following neutron capture, using ORNL's High Flux Isotope Reactor (HFIR) as a thermal neutron source. While they were unable …
Date:
May 31, 2007
Creator:
Diener, Michael D.; Alford, J. Michael & Mirzadeh, Saed
Object Type:
Report
System:
The UNT Digital Library
Report on Toyota/Prius Motor Torque Capability, Torque Property, No-Load Back EMF, and Mechanical Losses, Revised May 2007
In today's hybrid vehicle market, the Toyota/Prius drive system is currently considered the leader in electrical, mechanical, and manufacturing innovations. It is significant that in today's marketplace, Toyota is able to manufacture and sell the vehicle for a profit. This project's objective is to test the torque capability of the 2004 Prius motor and to analyze the torque properties relating to the rotor structure. The tested values of no-load back electromotive force (emf) and mechanical losses are also presented.
Date:
May 31, 2007
Creator:
Hsu, J.S.; Ayers, C.W.; Coomer, C.L.; Wiles, R.H.; Burress, T.A.; Campbell, S.L. et al.
Object Type:
Report
System:
The UNT Digital Library
Research Tax Credit: Current Status and Selected Issues for Congress
None
Date:
May 31, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Retiree Health Benefits: Majority of Sponsors Continued to Offer Prescription Drug Coverage and Chose the Retiree Drug Subsidy
A letter report issued by the Government Accountability Office with an abstract that begins "The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (MMA) created a prescription drug benefit for beneficiaries, called Medicare Part D, beginning in January 2006. The MMA resulted in options for sponsors of employment-based prescription drug benefits, such as a federal subsidy payment--the retiree drug subsidy (RDS)--when sponsors provide benefits meeting certain MMA requirements to Medicare-eligible retirees. The MMA required GAO to conduct two studies on trends in employment-based retiree health coverage and the MMA options available to sponsors. The first study, Retiree Health Benefits: Options for Employment-Based Prescription Drug Benefits under the Medicare Modernization Act (GAO-05-205), was published February 14, 2005. In this second study, GAO determined which MMA prescription drug coverage options sponsors selected, the factors they considered in selecting these options, and the effect these decisions may have on the provision of employment-based health benefits for retirees. GAO identified options that sponsors selected using data from employer benefit surveys and the Centers for Medicare & Medicaid Services (CMS), the federal agency that administers Medicare. To obtain sponsors' views about the factors they considered and the effects of their decisions, GAO also interviewed …
Date:
May 31, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Review and assessment of nanofluid technology for transportation and other applications.
This report provides a literature review on the research and development work contributing to the current status of nanofluid technology for heat transfer applications in industrial processes. Nanofluid technology is a relatively new field, and as such, the supporting studies are not extensive. Specifically, the experimental results and theoretical predictions regarding the enhancement of the thermal conductivity and convective heat transfer of nanofluids relative to conventional heat transfer fluids were reviewed and assessments were made of the current status to derive future research and development directions for industrial applications. Pertinent parameters were considered individually as to the current state of knowledge. Experimental results from multiple research groups were cast into a consistent parameter, 'the enhancement ratio,' to facilitate comparisons of data among research groups and identification of thermal property and heat transfer trends. The current state of knowledge is presented as well as areas where the data are currently inconclusive or conflicting. Heat transfer enhancement for available nanoparticles is known to be in the 15-40% range, with a few situations resulting in orders of magnitude enhancement. The direction of future research should be to substantiate the lower range results and to continue investigations into the higher enhancements. The focus of …
Date:
May 31, 2007
Creator:
Yu, W.; France, D. M.; Choi, S. U. S.; Routbort, J. L. & Systems, Energy
Object Type:
Report
System:
The UNT Digital Library
Rio Grande Herald (Rio Grande City, Tex.), Vol. 94, No. 21, Ed. 1 Thursday, May 31, 2007
Weekly newspaper from Rio Grande City, Texas that includes local, state and national news along with extensive advertising.
Date:
May 31, 2007
Creator:
Roberts, Kenneth
Object Type:
Newspaper
System:
The Portal to Texas History
Russian Political, Economic, and Security Issues and U.S. Interests
None
Date:
May 31, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Sachse News (Sachse, Tex.), Vol. 3, No. 18, Ed. 1 Thursday, May 31, 2007
Weekly newspaper from Sachse, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2007
Creator:
Fisher, Donnita Nesbit
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 173, Ed. 1 Thursday, May 31, 2007
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 2007
Creator:
Mattox, Jami
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
SASSE MODELING OF A URANIUM MOLYBDENUM SEPARATION FLOWSHEET
H-Canyon Engineering (HCE) is evaluating the feasibility of processing material from the Super Kukla Prompt Burst Reactor, which operated at the Nevada Test Site from 1964 to 1978. This material is comprised of 90 wt % uranium (U) (at approximately 20% 235U enrichment) alloyed with 10 wt % molybdenum (Mo). The objective is to dissolve the material in nitric acid (HNO{sub 3}) in the H-Canyon dissolvers and then to process the dissolved material through H-Canyon First and Second Cycle solvent extraction. The U product from Second Cycle will be sent to the highly enriched uranium (HEU) blend down program. In the blend down program, enriched U from the 1EU product stream will be blended with natural U at a ratio of 1 part enriched U per 3.5 parts natural U to meet a reactor fuel specification of 4.95% 235U before being shipped for use by the Tennessee Valley Authority (TVA) in its nuclear plants. The TVA specification calls for <200 mg Mo/g U (200 ppm). Since natural U has about 10 mg Mo/g U, the required purity of the 1EU product prior to blending is about 800 mg Mo/g U, allowing for uncertainties. HCE requested that the Savannah River National …
Date:
May 31, 2007
Creator:
Laurinat, J
Object Type:
Report
System:
The UNT Digital Library
Seismic velocity estimation from time migration
This is concerned with imaging and wave propagation in nonhomogeneous media, and includes a collection of computational techniques, such as level set methods with material transport, Dijkstra-like Hamilton-Jacobi solvers for first arrival Eikonal equations and techniques for data smoothing. The theoretical components include aspects of seismic ray theory, and the results rely on careful comparison with experiment and incorporation as input into large production-style geophysical processing codes. Producing an accurate image of the Earth's interior is a challenging aspect of oil recovery and earthquake analysis. The ultimate computational goal, which is to accurately produce a detailed interior map of the Earth's makeup on the basis of external soundings and measurements, is currently out of reach for several reasons. First, although vast amounts of data have been obtained in some regions, this has not been done uniformly, and the data contain noise and artifacts. Simply sifting through the data is a massive computational job. Second, the fundamental inverse problem, namely to deduce the local sound speeds of the earth that give rise to measured reacted signals, is exceedingly difficult: shadow zones and complex structures can make for ill-posed problems, and require vast computational resources. Nonetheless, seismic imaging is a crucial part …
Date:
May 31, 2007
Creator:
Cameron, Maria Kourkina
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Sensor System Based on Semi-Conductor Metal Oxide Technology for In Situ Detection of Coal Fired Combustion Gases
Sensor Research and Development Corporation (SRD) proposed a two-phase program to develop a robust, autonomous prototype analyzer for in situ, real-time detection, identification, and measurement of coal-fired combustion gases and perform field-testing at an approved power generation facility. SRD developed and selected sensor materials showing selective responses to carbon monoxide, carbon dioxide, nitric oxide, nitrogen dioxide, ammonia, sulfur dioxide and hydrogen chloride. Sensor support electronics were also developed to enable prototype to function in elevated temperatures without any issues. Field-testing at DOE approved facility showed the ability of the prototype to detect and estimate the concentration of combustion by-products accurately with relatively low false-alarm rates at very fast sampling intervals.
Date:
May 31, 2007
Creator:
Marquis, Brent
Object Type:
Report
System:
The UNT Digital Library
Simulation of Aluminum Combustion and PETN Afterburning in a Confined Explosion
None
Date:
May 31, 2007
Creator:
Kuhl, A L; Bell, J B; Beckner, V E & Khasainov, B
Object Type:
Article
System:
The UNT Digital Library
South Florida Ecosystem: Restoration Is Moving Forward but Is Facing Significant Delays, Implementation Challenges, and Rising Costs
A letter report issued by the Government Accountability Office with an abstract that begins "The South Florida ecosystem covers about 18,000 square miles and is home to the Everglades, a national resource. Over the past 100 years, efforts to manage the flow of water through the ecosystem have jeopardized its health. In 2000, a strategy to restore the ecosystem was set; restoration was expected to take at least 40 years and cost $15.4 billion. The restoration comprises hundreds of projects, including 60 key projects known as the Comprehensive Everglades Restoration Plan (CERP), to be undertaken by a partnership of federal, state, local, and tribal governments. Given the size and complexity of the restoration, GAO was asked to report on the (1) status of project implementation and expected benefits, (2) factors that determine project sequencing, (3) amount of funding provided for the effort and extent that costs have increased, and (4) primary mathematical models that guide the restoration."
Date:
May 31, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Stamford American (Stamford, Tex.), Vol. 86, No. 7, Ed. 1 Thursday, May 31, 2007
Weekly newspaper from Stamford, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History