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871 Matching Results
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Atmospheric transport and dispersion of pollutants and related meteorological studies. Final report for 1990
A new National Meteorological Support Plan for Federal responses to the release of hazardous materials into the atmosphere is being formulated. The plan summarizes Government agencies` responsibilities for characterizing, validating, identifying, tracking, monitoring, and forecasting the transport and dispersion of released hazardous materials. Under Chapter 2, Agency Requirements and Capabilities, the plan states that Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) research activities in atmospheric transport and dispersion are conducted primarily within NOAA`s Air Resources Laboratory (ARL). The DOE is also a participating agency responding to capabilities and requirements. To fulfill these obligations, ARL is continuing to develop its Immediate Response Program (IRP) composed of: Analysis -- forecast trajectory models; analysis -- forecast transport and dispersion models; and meteorological support -- data access and display programs. Progress is described.
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Design-for-analysis or the unintended role of analysis in the design of piping systems
The paper discusses the evolution of piping design in the nuclear industry with its increasing reliance on dynamic analysis. While it is well recognized that the practice has evolved from ``design-by- rule `` to ``design-by-analysis,`` examples are provided of cases where the choice of analysis technique has determined the hardware configuration, which could be called ``design-for-analysis.`` The paper presents practical solutions to some of these cases and summarizes the important recent industry and regulatory developments which, if successful, will reverse the trend towards ``design-for-analysis.`` 14 refs.
Date:
December 31, 1991
Creator:
Antaki, G. A.
Object Type:
Article
System:
The UNT Digital Library
Development of novel copper-based sorbents for hot-gas cleanup. Technical report, September 1--November 30, 1991
The objective of this investigation is to evaluate several novel copper-based binary oxides for their suitability as regenerable sorbents for hot gas cleanup application in the temperature range of 650{degree} to 850{degree}C (1200{degree}--1550{degree}F). To achieve this objective, several novel copper-based binary oxide sorbents will be prepared. Experimental tests will be conducted at ambient pressure to determine the stability, sulfidation capacity, regenerability, and sulfidation kinetics of the novel sorbents. Tests will also be conducted at high pressure for the determination of the sulfidation reactivity, regenerability, and durability of the sorbents. The attrition characteristics of the sorbents will also be determined.
Date:
December 31, 1991
Creator:
Abbasian, J.
Object Type:
Report
System:
The UNT Digital Library
Development of the chemical and electrochemical coal cleaning process. Technical progress report, July 1, 1991--September 30, 1991
Liberation studies on the Elkhorn No. 3 coal were completed in this quarter. The results obtained from the 65 {times} 150 mesh samples showed that the amount of mineral matter and pyrite liberated by the Chemical and Electrochemical Coal Cleaning (CECC) process increases with time. The free mineral matter undergoes some reduction in size during the CECC treatment and the majority of the liberated mineral particles in this sample are finer than 150 mesh. This is opposite that found for the Pittsburgh No. 8 coal, which may explain the better response of the Elkhorn No. 3 coal to CECC treatment. The continuous bench-scale unit was modified during the quarter to satisfy the health and safety requirements of the university. The unit was modified to ensure that any spill or leakage can be contained. Due to these modifications, continuous testing work was delayed.
Date:
December 31, 1991
Creator:
Basilio, C. I. & Yoon, Roe-Hoan
Object Type:
Report
System:
The UNT Digital Library
Development of the chemical and electrochemical coal cleaning process. Technical progress report, October 1, 1991--December 31, 1991
The continuous testing of the Chemical and Electrochemical Coal Cleaning (CECC) bench-scale unit (Task 6) was completed successfully in this quarter using Middle Wyodak and Elkhorn No. 3 coal samples. The CECC unit was run under the optimum conditions established for these coal samples in Task 4. For the Middle Wyodak coal, the ash content was reduced from 6.96% to as low 1.61%, corresponding to an ash rejection (by weight) of about 83%. The ash and sulfur contents of the Elkhorn No. 3 coal were reduced to as low as 1.8% and 0.9%. The average ash and sulfur rejections were calculated to be around 84% and 47%. The CECC continuous unit was used to treat -325 mesh Elkhorn No. 3 coal samples and gave ash and sulfur rejection values of as high as 77% and 66%. In these test, the clean -325 mesh coal particles were separated from the liberated mineral matter through microbubble column flotation, instead of wet-screening.
Date:
December 31, 1991
Creator:
Basilio, C. I. & Yoon, Roe-Hoan
Object Type:
Report
System:
The UNT Digital Library
Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 11, April 1, 1991--June 30, 1991
This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings. The overall project scope of the engineering development project is to conceptually develop a commercial flowsheet to maximize pyritic sulfur reduction at practical energy recovery values. This is being accomplished by utilizing the basic research data on the surface properties of coal, mineral matter and pyrite obtained from the Coal Surface Control for Advanced Fine Coal Flotation Project, to develop this conceptual flowsheet. The conceptual flowsheet must be examined to identify critical areas that need additional design data. This data will then be developed using batch and semi-continuous bench scale testing. In addition to actual bench scale testing, other unit operations from other industries processing fine material will be reviewed for potential application and incorporated into the design if appropriate. The conceptual flowsheet will be revised based on the results of the bench scale testing and areas will be …
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 12, July 1, 1991--September 30, 1991
The design criteria for each unit operation have been developed based upon a number of variables. These variables, at this time, are based upon the best engineering design information available to industry. A number of assumptions utilized in the design criteria are uncertain. The uncertainties of inert atmospheres for grinding and flotation as well as pyrite depressants were answered by the Surface Control Project. It was determined that inerting was not required and no ``new`` reagents were presented that improved the flotation results. In addition, Tasks 5 and 6 results indicated the required reagent dosage for conventional flotation and advanced flotation. Task 5 results also indicated the need for a clean coal,thickener, the flocculent dosages for both the clean coal and refuse thickeners, and final dewatering requirements. The results from Tasks 5 and 6 and summarized in Task 7 indicate several uncertainties that require continuous long duration testing. The first is the possibility of producing a grab product for both the Pittsburgh and Illinois No. 6 coals in conventional flotation. Second what does long-term recirculation of clarified water do to the product quality? The verification process and real data obtained from Tasks 5 and 6 greatly reduced the capital and …
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Environmental remediation 1991: ``Cleaning up the environment for the 21st Century``. Proceedings
This report presents discussions given at a conference on environmental remediation, September 8--11, Pasco, Washington. Topics include: public confidence; education; in-situ remediation; Hanford tank operations; risk assessments; field experiences; standards; site characterization and monitoring; technology discussions; regulatory issues; compliance; and the UMTRA project. Individual projects are processed separately for the data bases.
Date:
December 31, 1991
Creator:
Wood, D. E.
Object Type:
Article
System:
The UNT Digital Library
Fabrication of Thin-wall Hollow Nickel Spheres and Low Density Syntactic Foams
A process has been developed to fabricate thin-wall hollow spheres from conventional oxide powders at room temperature. The polymer- bonded powder shells are fired in air to sinter the walls, leaving the shells either impervious or porous. Alternatively, the oxide shells can be preferentially reduced to produce thin-wall hollow metal spheres which can be bonded together to produce an ultra light weight closed-cell foam. Processing and properties of this class of low density structures will be discussed.
Date:
December 31, 1991
Creator:
Clancy, R. B.; Sanders, T. H. Jr. & Cochran, J. K.
Object Type:
Article
System:
The UNT Digital Library
Food production and consumption near the Savannah River Site
Routine operations at the Savannah River Site (SRS) result in the release of radionuclides to the atmosphere and to the Savannah River. The resulting radiological doses to the off-site maximum individual and the 80-km population are estimated on a yearly basis. These estimates are generated using dose models prescribed in the NRC Reg. Guide 1.109 for the commercial nuclear power industry. A study of land and water usage characteristics in the region of the Savannah River Site has been conducted to determine site-specific values of the NRC dose model parameters. The study`s scope included local characteristics of meat, milk, vegetable production; Savannah River recreational activities and fish harvests; meat, milk, vegetable, and seafood consumption rates; and Savannah River drinking-water populations. Average and maximum consumption rates of beef, milk, vegetables, and fish have been determined for individuals residing in the southern United States. The study suggest that many of the consumption rates provided by the NRC may not be appropriate for residents of the South. Average consumption rates are slightly higher than the defaults provided by the NRC. Maximum consumption rates, however, are typically lower than NRC values. Agricultural productivity in the SRS region was found to be quite different than …
Date:
December 31, 1991
Creator:
Hamby, D. M.
Object Type:
Article
System:
The UNT Digital Library
Hanford Environmental Dose Reconstruction Project. Monthly report, December 1991
The objective of the Hanford Environmental Dose Reconstruction Project is to estimate the radiation doses that individuals and populations could have received from nuclear operations at Hanford since 1944. The project is being managed and conducted by the Pacific Northwest Laboratory (PNL) under the direction of an independent Technical Steering Panel (TSP). The TSP consists of experts in environmental pathways, epidemiology, surface-water transport, ground-water transport, statistics, demography, agriculture, meteorology, nuclear engineering, radiation dosimetry, and cultural anthropology. Included are appointed technical members representing the states of Oregon and Washington, a representative of Native American tribes, and an individual representing the public. The project is divided into the following technical tasks. These tasks correspond to the path radionuclides followed, from release to impact on human (dose estimates): Source Terms; Environmental Transport; Environmental Monitoring Data; Demographics, Agriculture, Food Habits and; Environmental Pathways and Dose Estimates.
Date:
December 31, 1991
Creator:
Finch, S. M. & McMakin, A. H.
Object Type:
Report
System:
The UNT Digital Library
Partial-wave analyses of hadron scattering below 2 GeV. Progress report May 1991--April 30, 1992
The Center for Analysis of Particle Scattering (CAPS) in the Department of Physics at Virginia Polytechnic Institute and State University has analyzed basic two-body hadron reactions below 2 GeV for the last two decades. Reactions studied were nucleon-nucleon, pion-nucleon, K{sup +}-nucleon and pion photoproduction systems. In addition to analyses of these systems, a computer graphics system (SAID) has been developed and disseminated to over 250 research institutions using VAX computers. The computer-interactive system for disseminating information on basic scattering reactions is also accessible to the physics community through TELNET on the VPI&SU physics department VAX. 6 refs.
Date:
December 31, 1991
Creator:
Arndt, Richard A. & Roper, L. David
Object Type:
Report
System:
The UNT Digital Library
A perspective of hazardous waste and mixed waste treatment technology at the Savannah River Site
Treatment technologies for the preparation and treatment of heavy metal mixed wastes, contaminated soils, and mixed mercury wastes are being considered at the Savannah River Site (SRS), a DOE nuclear material processing facility operated by Westinghouse Savannah River Company (WSRC). The proposed treatment technologies to be included at the Hazardous Waste/Mixed Waste Treatment Building at SRS are based on the regulatory requirements, projected waste volumes, existing technology, cost effectiveness, and project schedule. Waste sorting and size reduction are the initial step in the treatment process. After sorting/size reduction the wastes would go to the next applicable treatment module. For solid heavy metal mixed wastes the proposed treatment is macroencapsulation using a thermoplastic polymer. This process reduces the leachability of hazardous constituents from the waste and allows easy verification of the coating integrity. Stabilization and solidification in a cement matrix will treat a wide variety of wastes (i.e. soils, decontamination water). Some pretreatments may be required (i.e. Ph adjustment) before stabilization. Other pretreatments such as soil washing can reduce the amount of waste to be stabilized. Radioactive contaminated mercury waste at the SRS comes in numerous forms (i.e. process equipment, soils, and lab waste) with the required treatment of high mercury …
Date:
December 31, 1991
Creator:
England, J. L.; Venkatesh, S.; Bailey, L. L.; Langton, C. A.; Hay, M. S.; Stevens, C. B. et al.
Object Type:
Article
System:
The UNT Digital Library
Seismicity and focal mechanisms for the Southern Great Basin of Nevada and California in 1990
For the calendar year 1990, the Southern Great Basin seismic network (SGBSN) recorded about 1050 earthquakes in the SGB, as compared to 1190 in 1989. Local magnitudes, M{sub L}, ranged from 0.0 for various earthquakes to 3.2 for an earthquake on April 3, 1990 5:47:58 UTC, 37.368{degrees} North, 117.358{degrees} West, Mud Lake, Nevada quadrangle. 95% of those earthquakes have the property, M{sub L} {le} 2.4. Within a 10 km radius of the center of Yucca Mountain, the site of a potential national, high-level nuclear waste repository, one earthquake with M{sub L} = 0.6 was recorded at 40-Mile Wash. The estimated depth of focus of this earthquake is 3.8 km below sea level. Other, smaller events may have also occurred in the immediate vicinity of Yucca Mountain, but would have been below the detection threshold (M{sub L}{approx}0.0 at Yucca Mountain). Focal mechanisms are computed for seventeen earthquakes in the Nevada Test Site (NTS) and in the SGB west of the NTS for the year 1990. Solutions are mostly strike-slip, although normal slip is observed for a hypocenter at Stonewall Flat, Nevada, and reverse slip is observed for a hypocenter at Tucki Mountain, California. The average direction of the focal mechanism P-axes …
Date:
December 31, 1991
Creator:
Harmsen, S. C.
Object Type:
Report
System:
The UNT Digital Library
The study of multi-institutional collaborations in high-energy physics. Progress report, January 1989--March 1991
Since World War II, the organizational framework for scientific research is increasingly the multi-institutional collaboration, especially in high-energy physics. A broad preliminary survey, into the functioning of research collaborations involving three or more institutions is described. The study is designed to identify patterns of collaborations, define the scope of the documentation problems, field-test possible solutions, recommend future actions, and build an archives of oral history interviews and other resources for scholarly use. Once the study is completed, its findings will be used to promote systems to document significant collaborative research.
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 98, No. 274, Ed. 1 Monday, December 30, 1991
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1991
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 70, No. 50, Ed. 1 Sunday, December 29, 1991
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 29, 1991
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 16, Number 96, Pages 7665-7762, December 27, 1991
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
December 27, 1991
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Vol. 100, No. 246, Ed. 1 Thursday, December 26, 1991
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 26, 1991
Creator:
Plummer, George
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Jewish Herald-Voice (Houston, Tex.), Vol. 83, No. 41, Ed. 1 Thursday, December 26, 1991
Weekly Jewish newspaper from Houston, Texas that includes local, state, and national news along with advertising.
Date:
December 26, 1991
Creator:
Samuels, Jeanne F.
Object Type:
Newspaper
System:
The Portal to Texas History
Věstník (Temple, Tex.), Vol. 79, No. 50, Ed. 1 Wednesday, December 25, 1991
Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date:
December 25, 1991
Creator:
Sefcik, R. J.
Object Type:
Newspaper
System:
The Portal to Texas History
The Wylie News (Wylie, Tex.), Vol. 44, No. 29, Ed. 1 Wednesday, December 25, 1991
Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.
Date:
December 25, 1991
Creator:
Smith, C. Truett
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 16, Number 95, Pages 7573-7664, December 24, 1991
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
December 24, 1991
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
[Historic Marker Application: Post Hospital Annex]
Application materials submitted to the Texas Historical Commission requesting a historic marker for the Post Hospital Annex, in Brownsville, Texas. The materials include the inscription text of the marker, original application, narrative, and photographs.
Date:
December 23, 1991
Creator:
Texas Historical Commission
Object Type:
Text
System:
The Portal to Texas History