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Environmental studies group. Annual report for 1978
Group projects included radioecological studies of aquatic and terrestrial systems, land management activities, foodstuff monitoring, dust transport studies including fugitive dust measurements and modeling, and several support programs involving evaluation of the plant's ambient air samplers and airborne tritium monitoring techniques. Some salient results from the several project reports include determination of an appropriate model for mechanically generated fugitive dust dispersion, a radionuclide inventory of Smart Ditch Pond (Pond D-1), a coefficient of community determination for two terrestrial sample plots on the plant site buffer zone, a natality and mortality rate determination for fawns in the plant deer herd (including one positive coyote-kill determination), inlet loss and filter paper collection efficiencies for the plant ambient air samplers, and differential tritium sampling measurements of the vapor in Building 771 stack effluent.
Date:
August 21, 1980
Creator:
Hunt, D. C. & Hurley, J. D.
Object Type:
Report
System:
The UNT Digital Library
Numerical analysis of laminar forced convection in a spherical annulus
Calculations of steady laminar incompressible fluid-flow and heat transfer in a spherical annulus are presented. Steady pressures, temperatures, velocities, and heat transfer coefficients are calculated for an insulated outer sphere and a 0/sup 0/C isothermal inner sphere with 50/sup 0/C heated water flowing in the annulus. The inner sphere radius is 13.97 cm, the outer sphere radius is 16.83 cm and the radius ratio is 1.2. The transient axisymmetric equations of heat, mass, and momentum conservation are solved numerically in spherical coordinates. The transient solution is carried out in time until steady state is achieved. A variable mesh is used to improve resolution near the inner sphere where temperature and velocity gradients are steep. It is believed that this is the first fully two-dimensional analysis of forced flow in a spherical annulus. Local and bulk Nusselt numbers are presented for Reynolds numbers from 4.4 to 440. Computed bulk Nusselt numbers ranged from 2 to 50 and are compared to experimental results from the literature. Inlet flow jetting off the inner sphere and flow separation are predicted by the analysis. The location of wall jet separation was found to be a function of Reynolds number, indicating the location of separation depends …
Date:
July 21, 1980
Creator:
Tuft, D.B.
Object Type:
Article
System:
The UNT Digital Library
Gene-enzyme telationships in somatic cells and their organismal derivatives in higher plants. Progress report
Progress is reported in the following subject areas: (1) chemistry of the arogenate molecule; (2) plant enzymology at the organismal level; (3) isolation of regulatory mutants in tobacco; and (4) stability of the haploid state in Nicotiana sylvestris.
Date:
April 21, 1980
Creator:
Jensen, R. A.
Object Type:
Report
System:
The UNT Digital Library
Preliminary planning study for safety relief valve experiments in a Mark III BWR pressure suppression system
In response to a request from the Water Reactor Safety Research Division of the US NRC, a preliminary study is provided which identifies key features and consideration involved in planning a comprehensive in-plant Safety Relief Valve experimental program for a Mark III containment design. The report provides identification of program objectives, measurement system requirements, and some details quantifying expected system response. In addition, a preliminary test matrix is outlined which involves a supporting philosophy intended to enhance the usefulness of the experimental results for all members of the program team: experimentalists, analysts, and plant operator.
Date:
April 21, 1980
Creator:
McCauley, E.W. & Holman, G.S.
Object Type:
Report
System:
The UNT Digital Library
Interim report: studies of boron deposition near geothermal power plants
Measurements in the Geysers area from April until October 1979 when the onset of seasonal rains limited field work are presented. Field studies involved the following three basic types of measurements: cooling tower drift deposition, plant ecological studies, and animal population studies. Brief summaries of the data are presented to demonstrate the types of information obtained. (MHR)
Date:
April 21, 1980
Creator:
Koranda, J.J.
Object Type:
Report
System:
The UNT Digital Library
Experimental determination of lower plenum ECC injection effectiveness
The effectiveness of lower plenum emergency core coolant (ECC) injection during a double ended offset shear cold leg break loss-of-coolant accident (LOCA) was investigated experimentally in a small-scale model of a pressurized water reactor (PWR). In order to determine relative merit of the lower plenum injection concept to mitigate the severity of a large break LOCA, data from lower plenum injection experiments were compared to data from an experiment in the Semiscale Mod-3 sytem in which cold leg ECC injection was utilized. The results indicated that lower plenum injection was extremely effective in initiating early reflooding of the core and earlier rod quenching than was observed in the cold leg injection experiment.
Date:
November 21, 1980
Creator:
Hanson, R.G.
Object Type:
Article
System:
The UNT Digital Library
Surface treatment of lead glass microsphere
The structural arrangement of a hydrated glass surface depends on the composition, thermal history and surface treatment. This paper considers the surface treatment of a lead glass with weak and strong acid solutions and in particular hydrogen peroxide, to give a microscopically clean microsphere.
Date:
May 21, 1980
Creator:
Andrews, J.E. Jr. & Koo, J.C.
Object Type:
Article
System:
The UNT Digital Library
Evaluation of refractory materials for a nuclear waste incinerator
An experiment to find a suitable refractory lining for a nuclear waste incinerator has been completed. Eleven brick and six castable products were analyzed by optical and scanning microscopy. All the materials were fashioned into cup shapes and subjected to temperatures ranging from 800 to 1200/sup 0/C for as long as six weeks. Some of the cups were charged weekly with pellets made from ash materials that would contact an incinerator liner. Refractory products containing a high percentage of aluminum oxide had the greatest resistance to cracking and slag buildup. 35 figures.
Date:
July 21, 1980
Creator:
Grotzky, V. K.; Kneale, P. A. & Teter, A. R.
Object Type:
Report
System:
The UNT Digital Library
Qualification of tribological materials and coatings for use in sodium. [LMFBR]
This paper describes some of the essential performance measures used to qualify materials for tribological applications in liquid sodium environments and summarizes relative properties of some of the newer tribological materials now qualified for use in sodium systems.
Date:
April 21, 1980
Creator:
Johnson, R. N. & Farwick, D. G.
Object Type:
Article
System:
The UNT Digital Library
Literature search for the non-aqueous separation of zinc from fuel rod cladding. [After dissolution in liquid metal]
This report reviews the literature of processes for the nonaqueous separation of zinc from dissolved fuel assembly cladding. The processes considered were distillation, pyrochemical processing, and electrorefining. The last two techniques were only qualitatively surveyed while the first, distillation, was surveyed in detail. A survey of available literature from 1908 through 1978 on the distillation of zinc was performed. The literature search indicated that a zinc recovery rate in excess of 95% is possible; however, technical problems exist because of the high temperatures required and the corrosive nature of liquid zinc. The report includes a bibliography of the surveyed literature and a computer simulation of vapor pressures in binary systems. 129 references.
Date:
June 21, 1980
Creator:
Sandvig, R. L.; Dyer, S. J.; Lambert, G. A. & Baldwin, C. E.
Object Type:
Report
System:
The UNT Digital Library
New developments in measurement technology relevant to the studies of deep geological repositories in domed salt and basalt
This report briefly describes recent geophysical and geotechnical instrumentation developments relevant to the studies of deep geologic repositories. Special emphasis has been placed on techniques that appear to minimize measurement problems associated with repositories constructed in basalt or domed salt. Included in the listing are existing measurement capabilities and deficiencies that have been identified by a few authors and instrumentation workshops that have assessed the capabilities of existing instrumentation with respect to repository applications. These deficiencies have been compared with the reported advantages and limitations of the new developments described. Based on these comparisons, areas that merit further research and development have been identified. The report is based on a thorough literature review and on discussions with several instrumentation specialists involved in instrumentation development.
Date:
May 21, 1980
Creator:
Ramirez, A.L. & Mao, N.H.
Object Type:
Report
System:
The UNT Digital Library
Silicon-on ceramic process: silicon sheet growth and device development for the large-area silicon sheet task of the Low-Cost Solar Array Project. Quarterly report No. 14, January 1-March 31, 1980
The purpose of this research program is to investigate the technical and economic feasibility of producing solar-cell-quality sheet silicon by coating inexpensive ceramic substrates with a thin layer of polycrystalline silicon. The coating methods to be developed are directed toward a minimum-cost process for producing solar cells with a terrestrial conversion efficiency of 11% or greater. By applying a graphite coating to one face of a ceramic substrate, molten silicon can be made to wet only that graphite-coated face and produce uniform, thin layers of large-grain polycrystalline silicon; thus, only a minimal quantity of silicon is consumed. A dip-coating method for putting silicon on ceramic (SOC) has been shown to produce solar-cell-quality sheet silicon. This method and a continuous-coating process also being investigated have excellent scale-up potential which offers an outstanding, cost-effective way to manufacture large-area solar cells. The dip-coating investigation has shown that, as the substrate is pulled from the molten silicon, crystallization continues to occur from previously grown silicon. Therefore, as the substrate length is increased (as would be the case in a scaled-up process), the expectancy for larger crystallites increases. Results and accomplishments are reported. (WHK)
Date:
April 21, 1980
Creator:
Whitehead, A B; Zook, J D; Grung, B L; McHenry, K; Schuldt, S B & Chapman, P W
Object Type:
Report
System:
The UNT Digital Library
Hydrogen absorption by YNi/sub 5/, LaPt/sub 5/, and ThNi/sub 5/ intermetallics
The absorption of H by YNi/sub 5/, LaPt/sub 5/ and ThNi/sub 5/ at pressures above those reported in the literature were studied. These alloys were reported to absorb no significant H/sub 2/ at low pressures. (FS)
Date:
February 21, 1980
Creator:
Lakner, J. F. & Takeshita, T.
Object Type:
Report
System:
The UNT Digital Library
Lunar radionuclide records of average solar-cosmic-ray fluxes over the last ten million years
Because changes in solar activity can modify the fluxes of cosmic-ray particles in the solar system, the nature of the galactic and solar cosmic rays and their interactions with matter are described and used to study the ancient sun. The use of cosmogenic nuclides in meteorites and lunar samples as detectors of past cosmic-ray variations are discussed. Meteorite records of the history of the galactic cosmic rays are reviewed. The fluxes of solar protons over various time periods as determined from lunar radionuclide data are presented and examined. The intensities of solar protons emitted during 1954 to 1964 (11-year solar cycle number 19) were much larger than those for 1965 to 1975 (solar cycle 20). Average solar-proton fluxes determined for the last one to ten million years from lunar /sup 26/Al and /sup 53/Mn data show little variation and are similar to the fluxes for recent solar cycles. Lunar activities of /sup 14/C (and preliminary results for /sup 81/Kr) indicate that the average fluxes of solar protons over the last 10/sup 4/ (and 10/sup 5/) years are several times larger than those for the last 10/sup 6/ to 10/sup 7/ years; however, cross-section measurements and other work are needed to …
Date:
March 21, 1980
Creator:
Reedy, R. C.
Object Type:
Article
System:
The UNT Digital Library
On-line monitoring of toxic materials in sewage at the Lawrence Livermore Laboratory
It is becoming increasingly important for industry to prevent releases of potentially toxic material to the environment. The Lawrence Livermore Laboratory has developed a system to monitor its sewage effluent on a continuous basis. A representative fraction of the total waste stream leaving the Plant is passed through a detection assembly consisting of an x-ray fluorescence unit which detects high levels of metals, sodium iodide crystal detectors that scan the sewage for the presence of elevated levels of radiation, and an industrial probe for pH monitoring. With the aid of a microprocessor, the data collected is reduced and analyzed to determine whether levels are approaching established environmental limits. Currently, if preset pH or radiation levels are exceeded, a sample of the suspect sewage is automatically collected for further analysis, and an alarm is sent to a station where personnel can be alerted to respond on a 24-hour basis. In the same manner, spectral data from the x-ray fluorescence unit will be routed through the 24-hour alarm system as soon as evaluation of the unit is complete. The design of the system and operational experience is discussed.
Date:
February 21, 1980
Creator:
Auyong, M.; Cate, J.L. Jr. & Rueppel, D.W.
Object Type:
Article
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 72, No. 8, Ed. 1 Thursday, February 21, 1980
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
February 21, 1980
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 72, No. 34, Ed. 1 Thursday, August 21, 1980
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
August 21, 1980
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
[News Clip: SMU Iranians]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 21, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: FWISD]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 21, 1980, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bush/Pennsylvania]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 21, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Arlington City Hall]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 21, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Colvin Graham]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 21, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bank Robbery]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 21, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Kennedy Kopechne]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 21, 1980, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library