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SOME EXPERIENCES IN THE WELD FABRICATION OF REFRACTORY METALS
Discussion is given on the welding fabrication of tungsten, molybdenum, niobium, and tantalum. Properties which make the four refractory metals important are tabulatcd along with titanium which is given for comparison. Extensive evaluation was conducted using the gas, tungsten arc welding process employing both manual and machine welding. Design data were obtained exclusively from machine welded sheet materials. Flash welding, resistance spot welding and brazing, electron beam welding, and high frequency resistance welding processes were also applied to molybdenum alloys. The oxidation of molybdenum, tantalum, and niobium in flowing air at 2000 deg F is also given. (P.C.H.)
Date:
February 10, 1961
Creator:
Thompson, E.G.
Object Type:
Report
System:
The UNT Digital Library
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
A Method of Determining the Intermediate Energy Neutron Dose
The intermediate energy neutron flux existing outside the biological shielding of reactors has not been studied to any great extent previous to this time, because of the lack of an instrument capable of detecting neutrons in the intermediate energy range. The instrument used at the MTR utilizes polyethylene spheres of various sizes to give different amounts of moderation and absorption to the impinging neutrons. A procedure for the approximate determination of the relative number of intermediate energy and fast neutrons is given. By graphical methods the following information is obtained: (1) fraction of intermediate neutrons, (2) fraction of fast neutrons, and (3) the approximate average energy of the fast neutrons. Since the instrument described can be used to determine the thermal neutron flux independent of intermediate and fast fluxes, only one instrument is required to determine the neutron flux in all three energy ranges. Dose calculations indicate the intermediate range neutrons give a dose greater than the dose delivered by fast neutrons around the MTR-ETR reactors under normal operating conditions. (auth)
Date:
March 10, 1961
Creator:
Hankins, D. E.
Object Type:
Report
System:
The UNT Digital Library
CHARGING AND DISCHARGING OF DEMINERALIZER RESINS. CORE I, SEED 2. Test Results (T-612085). Section 1
An investigation was conducted to flush the 1BD coolant purification system demineralizer of resin and to measurc the radiation level at pornts on the resin discharge line. It was found that the system demineralizer was satisfactorily flushed of resin. It was also found that the amount removed is measured by the amount required to recharge the demineralizer. (J.R.D.)
Date:
January 10, 1961
Creator:
unknown
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
STABILITY OF PLASMAS AGAINST ELECTROSTATIC PERTURBATIONS
None
Date:
August 10, 1961
Creator:
Fowler, T.K.
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
CATASTROPHIC OXIDATION OF HIGH-TEMPERATURE ALLOYS
The growth of nonprotective, crust-like oxide films was encountered in high-temperature alloy systems that contain molybdenum, vanadium, or tungsten as strengthening additions. The cause of accelerated oxidation in such alloys appears to be associated with the characteristically low melting temperatures of oxides of these refractory elements. The factors that contribute to a breakdown of oxidation protection in these systems are outlined and remedial methods which may be used to avoid catastrophic oxidation are discussed. Commonly encountered service failures that have resulted from catastrophic oxidation are also described. (auth)
Date:
November 10, 1961
Creator:
DeVan, J. H.
Object Type:
Report
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
[Photograph 2012.201.B0225.0495]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Witnesses at a hearing Wednesday in the probe of the Eastern State Hospital, Vinita, included T. L. Tackett, left, a Vinita farmer, and Owen Chuculate, assistant commissioner and corrections, both seated at the table."
Date:
May 10, 1961
Creator:
Cobb, Dick
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0051.1558]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Smashed car is death vehicle in which Purcell auto dealer Newell J. Barefoot, 47, was fatally injured Monday night in a head-on collision on NE 23 east of the Canadian River Bridge."
Date:
October 10, 1961
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0292.0008]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Richard Henry Dare, 26-year-old odd jobs laborer, who admitted killing his wife Patricia, her parents and a nephew in a fit of rage, was sentenced to the electric chair Wednesday."
Date:
May 10, 1961
Creator:
Matheson, Mandell
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0052.0792]
Photograph taken for a story in the Oklahoma City Times newspaper. Caption: "OVERTURNED TRUCK gives a spectacular appearance to a traffic mishap Monday at NW 30 and Classen. A car driven by Mrs. Alma Hanneman, 1924 NW 40. There were no injuries reported."
Date:
April 10, 1961
Creator:
King, Cliff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0316.0275]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Looking over the plans for staging the fashion show to be given at the garden party planned by the Women's Committee of the Oklahoma City Symphony Orchestra are Mrs. Paul K. Perkins, Ralph Robinson and Mrs. Paul Dudley."
Date:
August 10, 1961
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0293.0039]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "In a meeting Saturday in Oklahoma City, representatives of 11 tribes protested the closing of the Shawnee Indian tuberculosis hospital December 31."
Date:
December 10, 1961
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0545]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Opening night of the 1961-62 season for the Oklahoma City Symphony Orchestra drew record crowds estimated at more than 3, 400 persons."
Date:
October 10, 1961
Creator:
Matheson, Mandell
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0368]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Dr. George L. Cross / President of OU"
Date:
February 10, 1961
Creator:
King, Cliff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0301B.0368]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bethany police seized almost 10,000 Benzedrine pills after arresting five men Monday afternoon."
Date:
April 10, 1961
Creator:
Gumm, John
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0307B.0219]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Fred Jones - City Auto Dealer"
Date:
April 10, 1961
Creator:
Cobb, Dick
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0349.0604]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Captured floodwaters form a furious torrent on release through 10 gates from Grand Lake."
Date:
May 10, 1961
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0320B.0193]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Lee Johnson, prison sociologist, chats with a prisoner awaiting interview with a visiting psychiatrist."
Date:
November 10, 1961
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0349.0124]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
March 10, 1961
Creator:
Lucas, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0233.0162]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "These three top Enid State School officials, who testified Tuesday before a house investigating committee in Oklahoma City, are, left to right, Charles Duff, finance officer; Hubert Mullican, chief accountant, and Coble Gambill, personal officer."
Date:
April 10, 1961
Creator:
Cobb, Dick
Object Type:
Photograph
System:
The Gateway to Oklahoma History