Resource Type
Serial/Series Title
Chemical Processing Department Monthly Report
41
Winter Fuels Report
5
Irradiation Processing Department Monthly Record Report
3
Hanford Laboratories Operation Monthly Activities Report
2
Hanford Works Monthly Report
2
Irradiation Processing Department Monthly Report
2
A Real-Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report
1
Fiscal Year 1977
1
Fiscal Year 1992
1
Fiscal Year 1993
1
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Pelletizing/reslurrying as a means of distributing and firing clean coal
The objective of this study is to develop technology that permits the practical and economic preparation, storage, handling, and transportation of coal pellets, which can be reslurried into Coal water fuels (CWF) suitable for firing in small- and medium-size commercial and industrial boilers, furnaces, and engines. The project includes preparing coal pellets and capsules from wet filter cake that can be economically stored, handled, transported, and reslurried into a CWF that can be suitably atomized and fired at the user site. The wet cakes studied were prepared from ultra-fine (95% -325 mesh) coal beneficiated by advanced froth-flotation techniques. The coals studied included two eastern bituminous coals, one from Virginia (Elkhorn) and one from Illinois (Illinois No. 6) and one western bituminous coal from Utah (Sky Line coal).
Date:
November 21, 1991
Creator:
Conkle, H. N.; Raghavan, J. K.; Smit, F. J. & Jha, M. C.
System:
The UNT Digital Library
Method of independent timesteps in the numerical solution of initial value problems
In the numerical solution of initial-value problems in several independent variables, the timestep is controlled, especially in the presence of shocks, by a small portion of the logical mesh, what one may call the crisis zone. One is frustrated by the necessity of doing in the whole mesh frequent calculations required by only a small part of the mesh. It is shown that it is possible to choose different timesteps natural to different parts of the mesh and to advance each zone in time only as often as is appropriate to that zone's own natural timestep. Prior work is reviewed and for the first time an investigation of the conditions for well-posedness, consistency and stability in independent timesteps is presented; a new method results. The prochronic and parachronic Cauchy surfaces are identified; and the reasons (well-posedness) for constraining the Cauchy surfaces to be prochronic (as distinct from the method of Grandey), that is, to lie prior to the time of the crisis zone (the zone of least timestep), are indicated. Stability (in the maximum norm) of parabolic equations and (in the L2 norm) of hyperbolic equations is reviewed, without restricting the treatment to linear equations or constant coefficients, and stability …
Date:
July 21, 1976
Creator:
Porter, A. P.
System:
The UNT Digital Library
Cross-field injection of a charged, polarized, ion-electron beam
An early idea for fueling a controlled fusion device had been the injection of a polarized mixture of ions and electrons across a magnetic field and into the device. Now, the beam intensity (several kA/cm/sup 2/) required for this technique is available from pulsed ion diodes. Remaining feasibility questions involve beam optics and trapping. The most obvious advantage over neutral-beam injection is avoidance of the need to produce high-energy atoms. Therefore, the technique will compete best at ion energies above 100 keV. The method appears feasible for pulsed startup of mirror machines, but not for steady-state injection into a plasma.
Date:
April 21, 1976
Creator:
Hamilton, G. W.
System:
The UNT Digital Library
MST-80 microprocessor trainer. [Uses INTEL 8080A CPU and support chips housed in attache case]
This trainer is a complete, self-contained microcomputer system housed in a brief case for portability and convenience of use. It utilizes INTEL's 8080A microprocessor and associated support chips. The trainer is designed to allow the student to explore and learn the hardware and software capability of the 8080 microprocessor. It includes a breadboard socket so that experiments can be interfaced to the trainer. This option allows the student to learn both interfacing techniques and programing. A keyboard and numerical display are provided for the student to communicate with the trainer. The keyboard and numerical display can be used with either the octal number system or the hexadecimal number system. 8 figures. (RWR)
Date:
May 21, 1976
Creator:
Jones, G. D.
System:
The UNT Digital Library
Evaluation of BeO ceramic disks for thermally stimulated exoelectron dosimetry
BeO ceramic disks were evaluated for application as dosimeters for both penetrating and non-penetrating radiation. Response to penetrating radiation was measured as thermoluminescence (TL) and to non-penetrating radiation as thermally stimulated exoelectron emission (TSEE). Field experiments demonstrated that both TSEE and TL responses from BeO can monitor diverse radiation fields. BeO disks in a passive dosimeter were found to be sensitive to a lower exposure level of 100 pCi-day/liter of radon. The depth of the more active exoelectron layer in BeO was found to be 4 ..mu..m. A second less active, exoelectron layer extends to a depth of at least 16 ..mu..m.
Date:
November 21, 1975
Creator:
Bush, J. R.; Keeler, J. B. & Piret, J. J.
System:
The UNT Digital Library
The Xu-Tec process of introducing normally solid materials into substrate surfaces
Most of the initial alloying work has been with the interior of pipe segments. The source electrode, an Inconel 625 rod, was inserted into carbon steel pipe segment cathode. Alloy layers were deposited on the interior surfaces of these segments; maximum thickness (8 [mu]) was obtained for a potential difference of 200 V.
Date:
December 21, 1992
Creator:
Xu, Zhong.
System:
The UNT Digital Library
Data Director editor user's manual. [EDIT]
EDIT allows the user to edit or create text, either interactively or in the batch mode. The text may be a source program, program data, or documents. Special provisions permit the creation or editing of APT source-language programs. EDIT processes ASCII files from any accessible Data Director library and outputs files to any such library as specified by the user.
Date:
March 21, 1977
Creator:
McGoldrick, P.
System:
The UNT Digital Library
Design and simulation of the first blanket zone of the DEMO fusion device
An evaluation of the proposed design for the first blanket zone of the DEMO fusion device at Oak Ridge National Laboratory was performed by determining temperature profiles for a number of possible design geometries. Only one design configuration was acceptable and further evaluated by determining two-dimensional steady state temperature and tritium concentration profiles within the unit. The transient response of this design during periods of plasma shutdown was also determined to evaluate the maximum and minimum possible stress on the stainless steel cooling tubes. The preponderance of unacceptable designs of those investigated led to the recommendation that future studies consider only modules less than 25 cm thick and coolant temperature rises less than 67/sup 0/C.
Date:
December 21, 1976
Creator:
Lee, J. H.; Dweck, J. S. & Kraftick, K. A.
System:
The UNT Digital Library
Preliminary three-dimensional potential flow simulation of a five-liter flask air injection experiment
The preliminary results of an unsteady three-dimensional potential flow analysis of a five-liter flask air injection experiment (small-scale model simulation of a nuclear reactor steam condensation system) are presented. The location and velocity of the free water surface in the flask as a function of time are determined during pipe venting and bubble expansion processes. The analyses were performed using an extended version of the NASA-Ames Three-Dimensional Potential Flow Analysis System (POTFAN), which uses the vortex lattice singularity method of potential flow analysis. The pressure boundary condition at the free water surface and the boundary condition along the free jet boundary near the pipe exit were ignored for the purposes of the present study. The results of the analysis indicate that large time steps can be taken without significantly reducing the accuracy of the solutions and that the assumption of inviscid flow should not have an appreciable effect on the geometry and velocity of the free water surface. In addition, the computation time required for the solutions was well within acceptable limits.
Date:
March 21, 1977
Creator:
Davis, J. E.
System:
The UNT Digital Library
CPS: a continuous-point-source computer code for plume dispersion and deposition calculations
The continuous-point-source computer code calculates concentrations and surface deposition of radioactive and chemical pollutants at distances from 0.1 to 100 km, assuming a Gaussian plume. The basic input is atmospheric stability category and wind speed, but a number of refinements are also included.
Date:
May 21, 1976
Creator:
Peterson, K. R.; Crawford, T. V. & Lawson, L. A.
System:
The UNT Digital Library
Waste management analysis for the nuclear fuel cycle: parts I and II. Progress report for period ending March 31, 1977
Preliminary evaluation of leaching, acid digestion, and fusion methods for actinide recovery from incinerator ash was begun. Cold ash from the fluidized bed incinerator was used as a stand-in for contaminated ash being prepared. Solubilization of ash was used as the measure of method efficiency. Fusion with basic fluxes appears to be most promising both with respect to actinide recovery efficiency and minimum impact on waste volume and form. Evaluation was begun of methods and recycle preparation problems for salt waste and waste water streams. A feasibility study for removing actinides from the salt wastes with a bidentate organophosphorous extractant was initiated. The composition of these waste streams was defined and actinide extraction coefficients, using dihexyl-N, N-diethylcarbamylmethylene phosphonate as the extractant, were determined as a function of nitric acid concentration. For the waste water streams, preliminary flow sheets were developed for purifying water by reverse osmosis.
Date:
September 21, 1977
Creator:
Thompson, G. H.; Cash, D. L.; Childs, E. L.; Navratil, J. D.; Martella, L. L. & Plock, C. E.
System:
The UNT Digital Library
Preliminary flow sheet and process design for ZnSe thermochemical cycle
A preliminary design of the ZnSe cycle for thermochemical hydrogen production has been prepared for use in deriving economic costs for hydrogen production. The process flowsheet identifies key equipment items as well as major streams. Flow and heat loads have been estimated based on one mole of hydrogen output. The thermal efficiency of this cycle depends on two factors: (1) the ability to perform the dissolution of ZnSO/sub 4/ and the hydrolysis of ZnSe with a minimum amount of aqueous HCl, and (2) the ability to match the process heat requirements with available heat from the exothermic steps in the cycle. Estimates of the cycle's thermal efficiency range from 34--57 percent depending upon the process heat utilization.
Date:
June 21, 1976
Creator:
Otsuki, H. H. & Cox, K. E.
System:
The UNT Digital Library
LMFBR safety. 4. Review of current issues and bibliography of literature (1974--1975)
This report discusses the current status of liquid-metal fast breeder reactor (LMFBR) development and one of the principal safety issues, a hypothetical core-disruptive accident (HCDA). Bibliographic information on worldwide LMFBRs relative to the development of the breeder reactor as a safe source of nuclear power is presented for the period 1974 through 1975. The bibliography consists of approximately 1554 abstracts covering early research and development and operating experiences leading up to the present design practices that are necessary for the licensing of breeder reactors. Key-word, author, and permuted-title indexes are included for completeness.
Date:
March 21, 1977
Creator:
Buchanan, J. R. & Keilholtz, G. W.
System:
The UNT Digital Library
Glass transition temperatures of epoxy resins by pulsed nuclear magnetic resonance spectroscopy
Pulsed nuclear magnetic resonance spectroscopy has been used to measure the glass transition temperatures of cured epoxy resins. These measurements make it possible to monitor the cure and determine the glass transition temperature as a function of the curing conditions and the concentration of the components. Knowledge of the glass transition temperature of the cured epoxies allows screening of them for a number of uses, including adhesives and coatings operations.
Date:
April 21, 1976
Creator:
Rutenberg, A. C.; Dorsey, G. F. & Peck, C. G.
System:
The UNT Digital Library
Magnetic susceptibility and neutron diffraction investigation of. cap alpha. -/sup 242/Pu
Magnetic susceptibility and neutron diffraction measurements were made on a high purity, polycrystalline sample of ..cap alpha..-phase /sup 242/Pu. The susceptibility results show the existence of weak ferromagnetism below 50/sup 0/K. This suggests that the ..cap alpha..-phase is antiferromagnetic, the observed ferromagnetic moment (9.5 x 10/sup -4/ emu per gram of sample at 4.35/sup 0/K) originating within antiferromagnetic domain walls. No evidence for antiferromagnetic ordering was observed in the neutron diffraction study suggesting that the moment per Pu atom is too small to observe with this technique.
Date:
December 21, 1970
Creator:
Sparks, J. T.; Komoto, T. & Ramsey, W. J.
System:
The UNT Digital Library
Drywell pressurization test for the NRC 1/5 scale pressure suppression experiment
A drywell pressurization test was conducted at LLL on February 1, 1977, as part of the NRC /sup 1///sub 5/ scale pressure suppression experiment. A series of four test runs were completed with predicted initial drywell pressurization rates of 14.0, 18.6, 23.0, and 26.0 psi/sec (96.5, 128, 159, and 179 kPa/sec). Each test run consisted of charging various combinations of bottles with nitrogen under high pressure, evacuating the drywell to /sup 1///sub 5/ atmosphere, and opening a valve between the two to allow quick pressurization of the drywell. The pressure-time signatures of all four test runs were in excellent agreement with predicted results made through (1) a computer model developed at LLL and (2) the CONTEMPT-LT computer code which was run by E.G. and G. at the I.N.E.L. Based on the results of the test, only very minor adjustments will be made for the upcoming nitrogen tests with the drywell and toroidal wetwell system linked together.
Date:
February 21, 1977
Creator:
Altenbach, T. J. & Pitts, J. H.
System:
The UNT Digital Library
Survey of large-scale isotope applications: nuclear technology field
A preliminary literature survey of potential large-scale isotope applications was made according to topical fields; i.e., nuclear, biological, medical, environmental, agricultural, geological, and industrial. Other than the possible expansion of established large-scale isotope applications such as uranium, boron, lithium, and hydrogen, no new immediate isotope usage appears to be developing. Over the long term a change in emphasis for isotope applications was identified which appears to be more responsive to societal concerns for health, the environment, and the conservation of materials and energy. For gram-scale applications, a variety of isotopes may be required for use as nonradioactive ''activable'' tracers. A more detailed survey of the nuclear field identified a potential need for large amounts (tons) of special isotopic materials for advanced reactor components and structures. At this need for special materials and the development of efficient separation methods progresses, the utilization of isotopes from nuclear wastes for beneficial uses should also progress.
Date:
January 21, 1977
Creator:
Dewitt, R.
System:
The UNT Digital Library
Review of world experience and properties of materials for encapsulation of terrestrial photovoltaic arrays. Final report
Available information defining the state of the art of encapsulation materials and processes for terrestrial photovoltaic devices and related applications were collected and analyzed. Based on criteria of properties, processability, availability, and cost, candidate materials were identified which have potential for use in encapsulation systems for low-cost, long-life terrestrial photovoltaic arrays manufactured by automated, high-volume processes. The criteria for consideration of the encapsulation systems were based on the goals for arrays with a lifetime of over 20 years high reliability, an efficiency greater than 10 percent, a total array price less than $500/kW, and a production capacity of 5 x 10/sup 5/ kW/yr. (WDM)
Date:
July 21, 1976
Creator:
Carmichael, D. C.; Gaines, G. B.; Sliemers, F. A.; Kistler, C. W. & Igou, R. D.
System:
The UNT Digital Library
Neutron absorption lithium detector
It is planned to manufacture ceramic target elements for use in N-Reactor. The potential exists for overdilution of the lithium-aluminate with aluminum powder. One method of nondestructively determining the target element type is by neutron absorption. This technique makes use of the different thermal neutron cross sections of aluminum and lithium. The target element to be tested is placed between a neutron counter and a neutron source--the neutron count with the unknown sample is then compared with that of a standard. An experiment was conducted to determine if a neutron absorption instrument could be used to identify a lithium or aluminum target element. A sketch of the test arrangement is shown. Test results are presented.
Date:
December 21, 1965
Creator:
Dozer, B. E.
System:
The UNT Digital Library
Energy exchange within ecosystems. Fifth annual technical progress report, January 1--December 31, 1976. [Elodea densa]
During the past year we have studied the effect of pH and inorganic carbon concentration on the photosynthesis of Elodea densa. In the pH range of 6 to 9, there is a dramatic change in the response of photosynthesis to pH. At 1 mM inorganic carbon and below photosynthesis increases with decreasing pH as expected, but at 10 mM and above there is a peak. This peak is between pH 7.5 and 8.0 when the inorganic carbon concentration is 10 to 20 mM and shifts to lower pH's with increasing temperature and decreasing inorganic carbon concentration. At a given temperature the calculated concentration of free CO/sub 2/ is the same at those carbon levels studied. Calculations and experiments have indicated that the presence of lacunae is not a major source of error in our system under the conditions used.
Date:
September 21, 1976
Creator:
Gates, D. M.
System:
The UNT Digital Library
Photometric determination of 1,3,5-triamino-2,4, 6-trinitrobenzene (TATB) in dimethylsulfoxide (DMSO)
The molar absorbanceted by the RSI/TRANCO finite-element computer code and results obtained by ORNL personnel for the Lyons, Kansas site. A determination of the transient temperature field for the room and pillar configuration that is proposed for the New Mexico pilot-plant site is included along with an analysis of the thermoelastic stress distribution in the near-field vicinity of the sleeve-waste container at the New Mexico pilot-plant site. (JRD)
Date:
July 21, 1977
Creator:
Selig, W.
System:
The UNT Digital Library
Heat exchanger-ingot casting/slicing process. Silicon sheet growth development for the large area silicon sheet task of the low cost Silicon Solar Array Project. Third quarterly progress report, April 1, 1976--June 18, 1976
The object of this program is to demonstrate that large single-crystal ingots, 6-inch diameter by 4 inches tall, can be economically cast by the Heat Exchanger Method (HEM) and economically sliced into thin sheets, 0.008-inches thick, with a multi-wafer slicer. The thrust of the experimental work during this quarter was to establish the proper seed meltback and to nucleate single-crystal growth off the seed. Slicing tests were begun on the multi-blade wafering machine, using a newly fabricated sensitive feed mechanism and associated components. (WDM)
Date:
June 21, 1976
Creator:
Schmid, F. & Reynolds, B.
System:
The UNT Digital Library
Energy Technologies for the West: geothermal; energy from the Earth. Workshop held in San Francisco, California, 21 September 1976
Dr. John W. Shupe, Univ. of Hawaii, the first of seven speakers, reviewed geothermal sources in Hawaii by means of a slide presentation. Prof. Hamilton Hess, University of San Francisco, dealt philosophically with geothermal energy, considered an ''exotic alternative, or at best, a marginal energy source.'' Robert G. Lacy, San Diego Gas and Electric Co., discussed geothermal development in the Imperial Valley. Dr. Tsvi Meidav, Geonomics, Inc., discussed the size of the geothermal resource and how far away full utilization of the resource is. Donald Finn, Geothermal Energy Institute, presented slides of geothermal sources ranging from areas in New England to the geysers in the western U.S.; he touched on some legal aspects about leasing areas for geothermal development. John Aldridge, Nevada Power Co., discussed further the legal impediments to geothermal development, with comments especially on the Geothermal Steam Act of 1970. Jim Breesee, Acting Director, Division of Geothermal Development, ERDA commented further on ERDA's program. The questions asked and answered in the panel discussion that followed are presented. (MCW)
Date:
September 21, 1976
Creator:
unknown
System:
The UNT Digital Library
Safe explosives for shaped charges
It was demonstrated that high-performance shaped charges could be developed using as the explosive charge mixtures of ingredients that are not, by themselves, considered explosives. At least one of the ingredients needed to be a liquid, stored separately, that could be quickly injected into the shaped charge cavity to generate the active explosive. Precision copper shaped charge cones in diameters of 65.2, 83.8, and 100.2 mm (about 2.6, 3.3, and 4.0 in.) were obtained and appropriate hardware was fabricated. It was demonstrated that 4 cone diameters of penetration were obtained in 255 BHN armor plate steel if the explosive charge was nitromethane or a combination of fine crystalline ammonium nitrate at a density of 1.0 Mg/m/sup 3/ with nitromethane. However, when prilled ammonium nitrate was used with nitromethane, the jet failed to form. The shaped charges would be used to destroy the high explosive in a nuclear warhead in case of imminent enemy threat to the weapon.
Date:
January 21, 1977
Creator:
Scribner, K. J. & Davis, J. O.
System:
The UNT Digital Library