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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
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1486, Ed. 2 Tuesday, May 15, 1894
Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
May 15, 1894
Creator:
Smith, Winfield S.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat (Altus, Okla.), Vol. 6, No. 10, Ed. 1 Thursday, May 15, 1913
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1913
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star (Mangum, Okla.), Vol. 30, No. 48, Ed. 1 Wednesday, May 15, 1918
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1918
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Mirror (Mangum, Okla.), Vol. 1, No. 17, Ed. 1 Tuesday, May 15, 1917
Semi-weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1917
Creator:
Ryder, J. W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 29, No. 11, Ed. 1 Thursday, May 15, 1919
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1919
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Socialist Antidote (Granite, Okla.), Vol. 1, No. 7, Ed. 1 Monday, May 15, 1916
Monthly newspaper from Granite, Oklahoma that includes anti-socialist and pro-Christian viewpoints and arguments.
Date:
May 15, 1916
Creator:
Stone, Logan
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1485, Ed. 1 Tuesday, May 15, 1894
Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
May 15, 1894
Creator:
Smith, Winfield S.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 9, No. 7, Ed. 2 Saturday, May 15, 1897
Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
May 15, 1897
Creator:
Greer, Frank H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 56, Ed. 1 Wednesday, May 15, 1912
Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1912
Creator:
Hornaday, W. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 9, No. 7, Ed. 1 Saturday, May 15, 1897
Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
May 15, 1897
Creator:
Greer, Frank H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star And Southwest Eagle (Mangum, Okla.), Vol. 31, No. 48, Ed. 1 Thursday, May 15, 1919
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1919
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 23, No. 10, Ed. 1 Thursday, May 15, 1913
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1913
Creator:
Zimmerman, Warren
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 20, No. 12, Ed. 1 Thursday, May 15, 1919
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
May 15, 1919
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History