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HANFORD STUDIES FOR EGCR COMBUSTION CHARACTERISTICS. Summary Report
The temperature, geometry, and flow conditions which exist in the EGCR were duplicated in a mock-up designated as the EGCR Burning Rig to establish the combustion conditions in the reactor. The conditions under which the EGCR Burning Rig will ignite were established and an analytical model was developed which predicts these conditions. Because the Burning Rig cannot exactly dupIicate the reactor situation the final prediction of the safety of the EGCR must rest on computer calculations employing the above analytical model. No advantage in retarding combustion was found in using silicon carbide coated fuel sleeves. The negative results of these tests are due both to the particular geometry of the EGCR moderator and sleeves as well as to the fact that all sleeves tested contained imperfections in the coatings. Chlorine was demonstrated to be an effective agent for extinguishing graphite fires. Concentrations in air of about 1% were observed to extinguish graphite fires at temperatures as high as 1000 deg C. (auth)
Date:
October 10, 1961
Creator:
de Halas, D.R.; Dahl, R.E. & Jackson, J.L.
Object Type:
Report
System:
The UNT Digital Library
Delayed Failure Hydrogen Embrittlement of Zirconium. Summary Report, September 15, 1961 to September 14, 1962
The extent to which zirconium and zirconium alloys exhibit delayed failure (static fatigue) as caused by a combination of absorbed hydrogen and applied stress was investigated. Susceptibility to time-dependent fracture was evaluated for unalloyed zirconium and Zircaloy-2 with 200 and 500 ppm hydrogen as well as for an experimental Zr Al-Sn-Mo alloy and the Canadian Zr-2.5Nb cladding material. For unalloyed zirconium and Zircaloy-2 containing up to 500 ppm hydrogen, no room-temperature, timedependent fracture occurred which could be definitely attributed to the delayed failure phenomenon; an increased grain size, 20% cold deformation by rolling, or corrosion in 750 deg F steam did not significantly affect this behavior. The curve of applied stress versus time to failure at room temperature for the high-strength Zr-Al-Sn--Mo alloy containing 500 ppm hydrcgen established a strong susceptibility to delayed failure due to hydrogen absorption; studies on vacuum-annealed material showed no failures. Further, reduced temperature indicated that the occurrence of static fatigue is temperature dependent. Data for heattreated Zr 2.5Nb containing 500 ppm hydrogen indicated that this material is moderately sensitive to delayed failure at room temperature; higher hydrogen contents caused a greatly increased susceptibility to time-dependent fracture. (auth)
Date:
October 10, 1962
Creator:
Weinstein, D. & Holtz, F. C.
Object Type:
Report
System:
The UNT Digital Library
Petroleum marketing monthly, October 1991. [Contains glossary]
This report is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiner's acquisition cost of crude oil. Sales data for motor gasoline, distillates, residuals, aviation fuels, kerosene, and propane are presented. 12 figs., 55 tabs.
Date:
October 10, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Kilowatt Isotope Power System: component test report for the ground demonstration system accumulator. 77-KIPS-100
The purpose of this test was to demonstrate that the system accumulator for the developmental program to be conducted on the Kilowatt Isotope Power System (KIPS) fulfilled the requirements of the test procedure (TP 400) test objectives. The results of the expulsion testing performed on the system accumulator are presented.
Date:
October 10, 1977
Creator:
Brainard, E.L.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Nancy Cason to Sue Pacey, October 10, 1991]
Photocopy of a letter from Nancy Cason, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Sue Pacey, Young Audiences of Greater Dallas. Inviting Pacey and other staff members of Young Audiences to three live, interactive teleworkshops on the arts. Cason writes that their institute has arranged for viewing space and the use of an 800 telephone line in Chilton Hall of UNT campus for the upcoming events. Attached to the letter is an program list of the teleworkshops and their description details.
Date:
October 10, 1991
Creator:
Cason, Nancy
Object Type:
Letter
System:
The UNT Digital Library
Upgrade of the Proton West secondary beamline
As originally designed and operated, protons entering PW6 were steered by a series of EPB dipoles into a single interaction length beryllium target, some 43 feet from the enclosure wall. Ensuing secondary beams, either p{sup +}/{pi}{sup +} or p{sup -}/{pi}{sup -}, were collected by a string of quadrupoles following the target, steered westward, away from the Proton Center line, through PW6 and PW7, and ultimately focussed on experiment production targets located within the large PW8 hall. Around the Spring of 1988 it was decided to upgrade the existing Proton West secondary beamline to allow for transport of a primary proton beam, anticipated to be either 800 or 900 GeV/c, through PW8. This upgrade project, which is now nearing completion, was largely motivated by the then recent approval of E-771, a hadronic beauty production experiment located in PW8. E-771 represents the third in a series of experiments for the large-acceptance dimuon spectrometer presently located at the end of the Proton West beamline. This Technical Memo is a summary of the upgrade --- an explanation of the underlying strategy and a documentation of the final locations of the secondary beamline elements. 6 refs., 2 figs., 2 tabs.
Date:
October 10, 1989
Creator:
Spiegel, L.
Object Type:
Report
System:
The UNT Digital Library
Analytical model for the dynamic resistivity of electrically-exploded conductors
A detailed model for the dynamic resistivity of an exploding conductor presents many difficulties. An electrically-exploded conductor undergoes significant hydrodynamic expansion as it is heated. Resistivity is a function of both the temperature and density of a conductor and realistic models for resistivity over the range of parameter space experienced by an exploding conductor are quite complex. See for example, the model of Lee and More (1984). Calculation of the hydrodynamic expansion of the conductor during and subsequent to the explosion is likewise dependent on detailed knowledge of the equation of state for the conductor in a range where few experimental data exist. A further complication is the strong magnetic field which couples the hydrodynamic expansion to the currents flowing in the expanding material. In spite of the difficulties, progress is being made on detailed modeling of fuses and exploding conductors (Lidemuth and co-workers, 1985). A simpler approach has proved to be quite useful for modeling the electrical behavior of exploding bridgewire and slapper detonators and for modeling the explosionss of large conductors exploded with large capacitor banks. In the work described here, a simple, empirical model was developed which can be expressed as a closed-form algebraic expression involving four …
Date:
October 10, 1986
Creator:
Lee, R. S.
Object Type:
Article
System:
The UNT Digital Library
Dosimetry measurements external to a 10 kiloliter liquid-air vessel containing a D-T neutron source. [14 MeV neutrons]
To determine the radiation attenuation characteristics of liquid air (109 g/cm/sup 2/ thick) for 14 MeV neutrons from a central D-T source in a 10 kL vessel, radiation dose measurements were made using a large tissue-equivalent ion chamber external to the vessel. The shielding characteristics of steel spherical shells were also investigated. Experimental results were analyzed and compared with TARTNP Monte Carlo code calculations. Degradation of the ion chamber's response to high-energy neutrons was established and incorporated into the analysis. The dose attenuation factor for the unshielded detector was measured to be 0.073, compared with the calculated value of 0.081. The shielded detector signals were reduced only modestly; with a 10-cm-thick shell, the signal from the filled vessel dropped twofold.
Date:
October 10, 1977
Creator:
Tripler, D. J.; Goldberg, E. & Farley, W. E.
Object Type:
Report
System:
The UNT Digital Library
THE FABRICATION AND IRRADIATION TESTING OF DISPERSION-TYPE BeO-UO$sub 2$ CERAMIC FUEL MATERIALS
Considerations affecting the design of dispersion-type ceramic fuel materials are discussed. The results of measurements made to study the effect of fuel loading on the properties of the fuel bodies and the results of irradiation tests of fuel pellets composed of 20 vol% UO/sub 2/ dispersed in BeO are presented. Experience in the fabrication of dispersion-type BeO --UO/sub 2/ ceramic fuel materials is described. From the results obtained, it is believed that BeO --UO/sub 2/ fuel materials of the type studied will exhibit satisfactory performance in the Experimental Beryllium Oxide Reactor. (auth)
Date:
October 10, 1962
Creator:
Johnson, D. E. & Lofftus, F. H.
Object Type:
Report
System:
The UNT Digital Library
Air Lift Performance at Low Liquid Rates Using Oversized Piping and Lateral Runs
The use of oversized piping in an air lift for transferring solutions at rates less than 5 liters per hour was proven feasible with certain limitations. Reliable operation was also obtained with air lifts containing a lateral run inserted between the point of air injection and the final discharge point. Discharge of the air lifts, especially at low liquid flows, was very erratic under the conditions studied. (auth)
Date:
October 10, 1961
Creator:
Chamberlain, H. V.
Object Type:
Report
System:
The UNT Digital Library
World nuclear fuel cycle requirements 1991
The nuclear fuel cycle consists of mining and milling uranium ore, processing the uranium into a form suitable for generating electricity, burning'' the fuel in nuclear reactors, and managing the resulting spent nuclear fuel. This report presents projections of domestic and foreign requirements for natural uranium and enrichment services as well as projections of discharges of spent nuclear fuel. These fuel cycle requirements are based on the forecasts of future commercial nuclear power capacity and generation published in a recent Energy Information Administration (EIA) report. Also included in this report are projections of the amount of spent fuel discharged at the end of each fuel cycle for each nuclear generating unit in the United States. The International Nuclear Model is used for calculating the projected nuclear fuel cycle requirements. 14 figs., 38 tabs.
Date:
October 10, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
CHEMISTRY DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING JUNE 20, 1961
Progress in the fields of nuclear chemistry, isolation and chemical properties of synthetic elements, chemical separation of isotopes, radiation chemistry, organic chemistry, chemistry of aquecus systems, electrochemistry of corrosion, nonaqueous systems at high temperature, and chemical physics for the year ending June 20, 1961, is reported. Separate abstracts were prepared for each topic. (M.C.G.)
Date:
October 10, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Fracture-mechanics analysis of a thirty-inch gas autoclave
None
Date:
October 10, 1975
Creator:
Thompson, W. F.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Carjacking]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 10, 1994, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
NEUTRON FLUX AND Cd RATIO MEASUREMENTS IN THE HN-1 BEAM HOLE FOR THREE FUEL LOADINGS OF THE OAK RIDGE RESEARCH REACTOR
Neutron flux measurements were made in the Oak Ridge Research Reactor beam hole HN-l shield plug. at low reactor power (N/sub L/) with three fuel configurations. The purpose of these tests was to determine the most favorable fuel arrangement in the region of the experimental hole in order to permit minimization of exposure time of an in-pile slurry loop experiment using pure thoria. It was found that the perturbed thermal neutron flux decreased by factors of 2, each 1.4 in., at the forward end of the beam hole. Maximum and average fluxes observed for three fuel configurations were: high, 9.7 x l0/sup 13/ , 5.6 x 10/sup 13/; intermediate, 8.0 x 10/sup 13/, 4.7 x l0/sup 13/; and present operating, 7.4 x l0/sup 13/, 3.8 x 10/sup 13/. In the high and intermediate configurations fuel elements were located in the outer row of the lattice adjacent to the beam hole. Cadmium ratios were generally high (22 to 111) implying low available epi-cadmium flux under any of these configurations. (auth)
Date:
October 10, 1961
Creator:
Shor, A.J.f Mauney, T.H.
Object Type:
Report
System:
The UNT Digital Library
SUMMARY OF HRT RUN 21
The HRT was operated experimentally during run 2l at powers up to 5 Mw to explore the limiting conditions of fuel stability and to demonstrate the reliability of the system. The effect of core pressure on fuel stability was investigated over the range from l250 to 1750 psig. Stable operation at 5 Mw (2.6 Mw in the core) was demonstrated at 1250 psig. At 1600 and 1750 psig, fuel instability accompanied by rapid loss of reactivity occurred at powers down to 2.5 Mw. The threshold power for reactivity loss at intermediate pressures was raised by increasing the fuel acid/sulfate ratio from 0.28 to 0.34. In other studies the fuel temperature was varied from 240 to 275 deg C at sev eral different pressures. In some instances the reactor appeared more stable at the lower temperatures. The effects of suspended solids and oxygen concentration were examined briefly without conclusive results. At times during operation at low pressure and high power, an increase in reactivity, indicating deposition of uranium on the core tank, was observed. During an experiment to investigate this effect, a hole was melted in the core near the equator. The reactor was shut down for examination and modifications to …
Date:
October 10, 1961
Creator:
Haubenreich, P.N.; Bauman, H.F.; Bradley, N.C.; Engel, J.R.; Kolb, J.O.; Piper, H.B. et al.
Object Type:
Report
System:
The UNT Digital Library
Longitudinal spin fluctuations in nickel
The longitudinal and transverse spin fluctuations in Ni have been measured below {Tc} by means of polarized neutron scattering in the momentum range 0.06 < q < 0.18 {angstrom}{sup -1}. In transverse scans spin wave peaks at E{sub q} = Dq{sup 2} appear as expected from early measurements performed with unpolarized neutrons. The longitudinal magnetic scattering {sub {chi}L}(q, E), on the other hand, is quasielastic without any signature of inelastic peaks near E{sub q}. The q and T dependences of {sub {chi}L}(q, E) resemble the paramagnetic scattering above {Tc}, i.e., the linewidth is roughly proportional to q{sup 2.5} and the integrated intensity I(q) is proportional to (q{sup 2} + {kappa}{sub z}{sup 2}){sup -1}. 8 refs., 3 figs.
Date:
October 10, 1989
Creator:
Boeni, P.; Martinez, J. L. & Tranquada, J. M.
Object Type:
Article
System:
The UNT Digital Library
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 37, Ed. 1 Thursday, October 10, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 1918
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat. (Altus, Okla.), Vol. 1, No. 30, Ed. 1 Thursday, October 10, 1907
Weekly newspaper from Altus, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
October 10, 1907
Creator:
Williams, Bob
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 28, No. 25, Ed. 1 Thursday, October 10, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 1918
Creator:
Golobie, John
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat (Altus, Okla.), Vol. 5, No. 31, Ed. 1 Thursday, October 10, 1912
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 1912
Creator:
Kirk, Brant
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 14, No. 14, Ed. 1 Thursday, October 10, 1901
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
October 10, 1901
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 20, No. 15, Ed. 1 Thursday, October 10, 1907
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
October 10, 1907
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla.), Vol. 13, No. 14, Ed. 1 Wednesday, October 10, 1900
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
October 10, 1900
Creator:
Townsend, G. B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History