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Some Scoping Experiments for a Space Reactor
Some scoping experiments were performed to evaluate fuel performance in a lithium heat pipe reactor operating at a nominal 1500K heat pipe temperature. Fuel-coolant and fuel-coolant-clad relationships showed that once a failed heat pipe occurs temperatures can rise high enough so that large concentrations of uranium can be transported by the vapor phase. Upon condensation this uranium would be capable of penetrating heat pipes adjacent to the failed pipe. The potential for propagation of failure exists with UO/sub 2/ and a lithium heat pipe. Changing the composition of the metal of the heat pipe would have only a second order effect on the kinetics of the failure mechanism. Uranium carbide and nitride were considered as potential fuels which are nonreactive in a lithium environment. At high temperatures the nitride would be favored because of its better compatibility with potential cladding materials. Compositions of UN with small additions of YN appear to offer very attractive properties for a compact high temperature high power density reactor.
Date:
July 7, 1983
Creator:
Alexander, C. A. & Ogden, J. S.
Object Type:
Report
System:
The UNT Digital Library
Internal R and D task summary report: analytical methods development
International Coal Refining Company (ICRC) conducted two research programs to develop analytical procedures for characterizing the feed, intermediates,and products of the proposed SRC-I Demonstration Plant. The major conclusion is that standard analytical methods must be defined and assigned statistical error limits of precision and reproducibility early in development. Comparing all SRC-I data or data from different processes is complex and expensive if common data correlation procedures are not followed. ICRC recommends that processes be audited analytically and statistical analyses generated as quickly as possible, in order to quantify process-dependent and -independent variables. 16 references, 10 figures, 20 tables.
Date:
July 1, 1983
Creator:
Schweighardt, F.K.
Object Type:
Report
System:
The UNT Digital Library
Hawaii basic data for thermal springs and wells as recorded in geotherm
GEOTHERM sample file contains 34 records for Hawaii. The high average ambient air temperature found on the Hawaiian Islands required fluid samples to have a temperature of at least 30/sup 0/C to be included. A computer-generated index is found in appendices A of this report. The index give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Hawaii. The index is found in appendix A (p. is sorted by county and by the name of the source. Also given are well number (when appropriate), site type (spring, well, fumarole), latitude, longitude (both use decimal minutes), GEOTHERM record identifier, and temperature (/sup 0/C). In conducting a search of Appendix A, site names are quite useful for locating springs or wells for which a specific name is commonly used, but sites which do not have specific names are more difficult to locate.
Date:
July 1, 1983
Creator:
Bliss, J. D.
Object Type:
Report
System:
The UNT Digital Library
Improving the energy efficiency of residential clothes dryers
An experimental study on energy efficient electrical domestic clothes dryers is presented. A literature survey was performed and four basic energy saving techniques were identified: (1) reduced air flow rate and heater input, (2) recirculation of a portion of the exhaust air back into the clothes dryer, (3) heat recovery, utilizing an air-to-air heat exchanger, and (4) 100% recirculation of air through the dryer and a heat pump to condense water out of the air. Reduced air flow rate and heater input leads to energy savings around 8%, while recirculation of exhaust air reduces the energy consumption by approximately 18%. Because of the low cost of these two measures, they should be pursued by the manufacturers. When utilizing an air-to-air heat exchanger for heat recovery, two modes are considered. The first is to preheat the inlet air with heat from the exhaust air, which results in 20 to 26% energy savings depending upon the location of the dryer in the house. The second more attractive mode is 100% recirculation of air and condensation of water from this air in the heat exchanger (using indoor air as a heat sink) and represents a 100% heat recovery but leads to a 1 …
Date:
July 1, 1983
Creator:
Hekmat, D. & Fisk, W.J.
Object Type:
Report
System:
The UNT Digital Library
Low-Btu coal gasification in the United States: company topical. [Brick producers]
Hazelton and other brick producers have proved the reliability of the commercial size Wellman-Galusha gasifier. For this energy intensive business, gas cost is the major portion of the product cost. Costs required Webster/Hazelton to go back to the old, reliable alternative energy of low Btu gasification when the natural gas supply started to be curtailed and prices escalated. Although anthracite coal prices have skyrocketed from $34/ton (1979) to over $71.50/ton (1981) because of high demand (local as well as export) and rising labor costs, the delivered natural gas cost, which reached $3.90 to 4.20/million Btu in the Hazelton area during 1981, has allowed the producer gas from the gasifier at Webster Brick to remain competitive. The low Btu gas cost (at the escalated coal price) is estimated to be $4/million Btu. In addition to producing gas that is cost competitive with natural gas at the Webster Brick Hazelton plant, Webster has the security of knowing that its gas supply will be constant. Improvements in brick business and projected deregulation of the natural gas price may yield additional, attractive cost benefits to Webster Brick through the use of low Btu gas from these gasifiers. Also, use of hot raw gas (that …
Date:
July 1, 1983
Creator:
Boesch, L. P.; Hylton, B. G. & Bhatt, C. S.
Object Type:
Report
System:
The UNT Digital Library
Technically recoverable Devonian shale gas in Ohio
The technically recoverable gas from Devonian shale (Lower and Middle Huron) in Ohio is estimated to range from 6.2 to 22.5 Tcf, depending on the stimulation method and pattern size selected. This estimate of recovery is based on the integration of the most recent data and research on the Devonian Age gas-bearing shales of Ohio. This includes: (1) a compilation of the latest geologic and reservoir data for the gas in-place; (2) analysis of the key productive mechanisms; and, (3) examination of alternative stimulation and production strategies for most efficiently recovering this gas. Beyond a comprehensive assembly of the data and calculation of the technically recoverable gas, the key findings of this report are as follows: a substantial volume of gas is technically recoverable, although advanced (larger scale) stimulation technology will be required to reach economically attractive gas production rates in much of the state; well spacing in certain of the areas can be reduced by half from the traditional 150 to 160 acres per well without severely impairing per-well gas recovery; and, due to the relatively high degree of permeability anisotropy in the Devonian shales, a rectangular, generally 3 by 1 well pattern leads to optimum recovery. Finally, although …
Date:
July 1, 1983
Creator:
Kuushraa, V.A.; Wicks, D.E.; Sawyer, W.K. & Esposito, P.R.
Object Type:
Report
System:
The UNT Digital Library
Study of ebullated bed fluid dynamics. Final progress report, September 1980-July 1983
The fluid dynamics occurring in HRI's H-coal process development unit coal liquefaction reactor during Run PDU-10 were measured and compared with Amoco Oil cold-flow fluidization results. It was found that catalyst bed expansions and gas holdups are higher in the PDU than those observed in the cold-flow tests for slurries having the same nominal viscosity. Comparison of PDU results with cold-flow results shows that the bulk of the operating reactor gas flow lies in the ideal bubbly regime. It also appears that the gas bubbles in these PDU tests are rising quite slowly. Only two of the operating points in our test program on the PDU were found to lie in the churn turbulent regime. Existence of churn turbulent behavior during these two experiments is consistent with trends observed in earlier cold-flow experiments. Two- and three-phase fluidization experiments were carried out in Amoco's cold-flow fluid dynamics unit. The data base now includes fluidization results for coal char/kerosene slurry concentrations of 4.0, 9.8, and 20.7 vol% in addition to the 15.5 and 17.8 vol% data from our earlier work. Both HDS-2A and Amocat-1A catalysts were used in the tests. Bed expansion is primarily a function of slurry velocity, with gas velocity …
Date:
July 1, 1983
Creator:
Schaefer, R.J.; Rundell, D.N. & Shou, J.K.
Object Type:
Report
System:
The UNT Digital Library
Properties of jets in high-E/sub T/ events produced in pp collisions at. sqrt. s = 63 GeV
The properties of jets in high-E/sub tau/ events produced in pp collisions at ..sqrt..s = 63 GeV have been studied at the CERN Intersecting Storage Rings. The fragmentation of the jets is found to be similar to that of jets produced in e/sup +/e/sup -/ annihilation. The jets are wider than calculated from a constituent scattering model with no hard bremsstrahlung component. The charge correlations of positive and negative particles show differences consistent with expectation from valence-quark scattering. 11 references.
Date:
July 1, 1983
Creator:
Akesson, T.; Albrow, M.G.; Almehed, S.; Batley, R.; Benary, O.; Boggild, H. et al.
Object Type:
Article
System:
The UNT Digital Library
NCIS - a Nuclear Criticality Information System (overview)
A Nuclear Criticality Information System (NCIS) is being established at the Lawrence Livermore National Laboratory (LLNL) in order to serve personnel responsible for safe storage, transport, and handling of fissile materials and those concerned with the evaluation and analysis of nuclear, critical experiments. Public concern for nuclear safety provides the incentive for improved access to nuclear safety information.
Date:
July 1, 1983
Creator:
Koponen, B. L. & Hampel, V. E.
Object Type:
Article
System:
The UNT Digital Library
Trioxane-initiated formic acid denitration
The Savannah River Laboratory has developed a procedure for controlled low-temperature chemical denitration of acidic solutions. The procedure can be used in semi-continuous denitration facilities and can also be directly applied to nitric acid solutions in a storage tank (in situ denitration) if there is some provision for moderate heating (up to 80/sup 0/C) and cooling. The procedure works well for both highly acidic (approx. 11M) and moderately acidic (approx. 3M) solutions. Trioxane, the cyclic trimer of formaldehyde, is used to initiate the reaction, while the bulk of the denitration is effected by the formic acid. Once initiated, the off-gas rate is controlled by the formic acid addition rate and can easily be maintained within the capacity limits of the off-gas system. The procedure was successfully applied to a plant-scale in situ denitration at the Savannah River Plant.
Date:
July 1, 1983
Creator:
Reif, D. J.; Wright, W. V. & Monson, P. R., Jr.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0114.0400]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 7, 1983
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Failure Analysis of Cracked Head Spray Piping from the Dresden Unit 2 Boiling Water Reactor
Several sections of Type 304 stainless steel head spray piping, 6.25 cm (2.5 in.) in diameter, from the Dresden Unit 2 Boiling Water Reactor were examined to determine the nature and causes of coolant leakages detected during hydrostatic tests. Extensive pitting was observed on the outside surface of the piping, and three cracks, all located at a helical stripe apparently rubbed onto the outer surface of the piping, were also noted. Metallographic examination revealed that the cracking had initiated at the outer surface of the pipe, and showed it to be transgranular and highly branched, characteristic of chloride stress corrosion cracking. The surface pitting also appeared to have been caused by chlorides. A scanning electron microprobe x-ray analysis of the corrosion product in the cracks confirmed the presence of chlorides and also indicated the presence of calcium.
Date:
July 1983
Creator:
Diercks, D. R. & Dragel, Gabriel M.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0095.0727]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Cheryl Bohnsack, lead singer for the band Maya , belts out a song."
Date:
July 9, 1983
Creator:
Howell, Paul S.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0334]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Marie Connolly, seated, works on a jumpsuit while Diane Vasil, Left, and Diane Coady look on."
Date:
July 19, 1983
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0142.0623]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Danny Cooksey, Singer"
Date:
July 7, 1983
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0552]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Del City's Wade Compton beats Tri City/ Putnam City first baseman Doug Robison's attempt to tag him in first-round action of the Oklahoma City Majors American Legion Invitational Tournament."
Date:
July 13, 1983
Creator:
Howell, Paul S.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0154.0229]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Danny Davis, of Mustang, hopes his pop up goes foul in an OK Kids Minors state tournament baseball game."
Date:
July 26, 1983
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0171.0557]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Angela Helen learns from woodworking instructor Adrian Easlick about one phase of the world of jobs during the Comprehensive Educational Training Act program, under way at Southeast High School."
Date:
July 18, 1983
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0164.0577]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "A Doberman pinscher can be patriotic too!"
Date:
July 4, 1983
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0162.0365]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 19, 1983
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0162.0627]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Dirty Shame, Oklahoma."
Date:
July 21, 1983
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0164.0500]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ginger the Collie...a legend"
Date:
July 14, 1983
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0161.0291]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Yolanda Birdine, left, Charlotte Diaz, Mike Hand and Mary Talbart discuss blood drive."
Date:
July 5, 1983
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0162.0366]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mike Dillard: Karate Buff Turned Businessman"
Date:
July 26, 1983
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History