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Filtering by: Creator Robinson, Sara C. Remove constraint Creator: Robinson, Sara C. Advisor Robinson, Alan H. Remove constraint Advisor: Robinson, Alan H.

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  • Neutron-induced autoradiography of lithiasilica microspecimens : Specimen preparation and preliminary alpha tracking

    Creator:
    Wood, F. W. (Floyd William), 1926-
    Abstract:
    Lithia-silica compositions between lithium disilicate and pure silica were explored theoretically and experimentally, with special emphasis on structural miscibility. Diffusion couples of vitreous materials were prepared and annealed. Best success in preparation was achieved by using electron-bombardment heating in vacuum to melt the less refractory glass and let it solidify...
    Resource Type:
    Masters Thesis
    Full Text:
    . Robinson Lithia- silica compositions between lithium disilicate and pure silica were explored

  • A simulated two-group method for computing boiling water reactor power distributions

    Creator:
    Hatteberg, Ronald Leonard
    Abstract:
    A computer code capable of modeling the burnup dependent static behavior of a boiling water reactor was developed. The code calculates three-dimensional quarter core power distributions using a simulated two-group diffusion theory model. Thermal-hydraulic calculations account for the interaction between power, coolant flow, and void fraction distributions. Cross sections are...
    Resource Type:
    Masters Thesis
    Full Text:
    H. Robinson A computer code capable of modeling the burnup dependent static be- havior of a

  • PERT-IV, a two-dimensional perturbation theory code for fast reactors

    Creator:
    Hardie, Ralph Wayne
    Abstract:
    A two-dimensional perturbation theory computer code, PERT-IV, has been developed that will calculate reactivity coefficients, the delayed neutron fraction, and the neutron generation time. The program uses the output flux and adjoint flux from either a diffusion theory or transport theory program. A discussion and derivation of the perturbation equation...
    Resource Type:
    Masters Thesis
    Full Text:
    .'Robinson A two-dimensional perturbation theory computer code, PERT-IV, has been developed that will

  • High speed motion neutron radiography of two-phase flow

    Creator:
    Wang, Shou-Kong Lancelot
    Abstract:
    Current research in the area of two-phase flow utilizes a wide variety of sensing devices, but some limitations exist on the information which can be obtained. Neutron radiography is a feasible alternative to "see" the two-phase flow. A system to perform neutron radiographic analysis of dynamic events which occur on...
    Resource Type:
    Masters Thesis
    Full Text:
    radiography is to freeze the image of moving object. Originally initiated by A. H. Robinson and C. R. Porter

  • A comparison of iterative methods for the solution of elliptic partial differential equations, particularly the neutron diffusion equation

    Creator:
    Schwinkendorf, Kevin N.
    Abstract:
    Two new concepts have been explored in solving the neutron diffusion equation in one and two dimensions. At the present time, the diffusion equation is solved using source iterations. These iterations are performed in a mathematical form which has a great deal of physical significance. Specifically, the neutron production term...
    Resource Type:
    Masters Thesis
    Full Text:
    : Ann H. Robinson Two new concepts have been explored in solving the neutron diffusion equation in one

  • Numerical solutions of the neutron transport equation

    Creator:
    Skeen, David Roy
    Abstract:
    Because of the high cost of fuel for nuclear reactors, fuel cycle costs must be predicted accurately. This leads to the high cost computer computations and a search for cheaper yet still accurate methods. For this paper we have chosen to study an alternate method for calculating thermal neutron cell...
    Resource Type:
    Dissertation
    Full Text:
    , as Robinson did (36), that A (i)( v) has the form bi(oi) , (3-5)A (i)(v) = e -T (i) /v g(c., v) [b

  • High speed motion neutron radiography

    Creator:
    Bossi, Richard Henry
    Abstract:
    A system to perform neutron radiographic analysis of dynamic events taking place over the order of several milliseconds has been developed at Oregon State University. The design consists of a TRIGA reactor capable of pulsing to 3000 MW peak power, a neutron beam collimator with an L/D of about 30:1,...
    Resource Type:
    Dissertation
    Full Text:
    RADIOGRAPHY Redacted for Privacy Abstract approved: C-'L 'Alln H. Robinson A system to perform neutron

  • Optimization of in-core nuclear fuel management in a pressurized water reactor

    Creator:
    Stout, Richard Bartholomew
    Abstract:
    Fuel loading patterns which have a minimum power peak are economically desirable to allow power reactors to operate at the highest possible power density and to minimize the possibility of fuel failure. A computer code called SHUFLE was developed for pressurized water reactors which shuffles the fuel in search of...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Alan H. Robinson Fuel loading patterns which have a minimum power peak are

  • Nonintrusive intelligent monitoring for nuclear power plant emergency classification

    Creator:
    Greene, Kenneth R. (Kenneth Ray), 1958-
    Abstract:
    A prototype real-time process monitoring emergency classification expert system, RT/EM-CLASS, has been developed for use at the Trojan Nuclear Power Plant. This knowledge-based system features the integration of electronically sensed plant data with the menu selection data representation of its predecessor, EM-CLASS. This prototype demonstrates the techniques required to acquire...
    Resource Type:
    Dissertation
    Full Text:
    . Robinson A prototype real-time process monitoring emergency classification expert system, RT/EM-CLASS

  • A two-group study on the gadolinium particle depletion in light water reactor fuel rods

    Creator:
    Lee, Chungchan
    Abstract:
    The effect of gadolinia particles on the assembly criticality of a light water reactor was investigated using two 2-group models. The particle effect was calculated by comparing the criticalities of two fuel assemblies, each containing one gadolinia-poisoned rod. For purposes of comparison, both rods contained an equal quantity of gadolinia,...
    Resource Type:
    Dissertation
    Full Text:
    :_ Alan H. Robinson The effect of gadolinia particles on the assembly criticality of a light water

  • A comparison of three coarse-mesh nodal methods for boiling water reactor analysis

    Creator:
    Cho, Byung-Oh
    Abstract:
    Computer codes for versions of STORM, capable of calculating power distributions in a three-dimensional quarter-core of a boiling water reactor, were developed by using both a modified one-group and two-group diffusion theory model with several different power calculation schemes. Several numerical examples that demonstrate the high efficiency of the coarse-mesh...
    Resource Type:
    Masters Thesis
    Full Text:
    Methods for Boiling Water Reactor Analysis Redacted for Privacy Abstract approved: Alan H. Robinson

  • Energy models for computing fast reactor parameters

    Creator:
    Lorenzini, Paul Gilbert
    Abstract:
    Because of the complicated form of the diffusion equation, approximations are necessary to treat the energy dependence for practical problems. The standard model is the few group approximation. A second approximate form, the overlapping group or modal method, is examined and more fully developed in this work to provide an...
    Resource Type:
    Dissertation
    Full Text:
    PARAMETERS Abstract approved: Redacted for Privacy Alan H. Robinson Because of the complicated form of the

  • A comparative study of nodal course-mesh methods for pressurized water reactors

    Creator:
    Bukar, Kyari Abba
    Abstract:
    Several computer codes based on one and two-group diffusion theory models were developed for SHUFFLE. The programs were developed to calculate power distributions in a two-dimensional quarter core geometry of a pressurized power reactor. The various coarse-mesh numerical computations for the power calculations yield the following: the Borresen's scheme applied...
    Resource Type:
    Masters Thesis
    Full Text:
    . Robinson Several computer codes based on one and two-group diffusion theory models were developed for

  • Electron microscopic observation of alpha particle tracks in cellulose nitrate

    Creator:
    Fish, Robert Lawrence
    Abstract:
    The work in this thesis involves the development of specimen preparation techniques for the observation with an electron microscope of alpha particle tracks in cellulose nitrate plastic. Both direct observation using thin films and replica production techniques were investigated. Direct observation of the alpha tracks was accomplished by cutting thin...
    Resource Type:
    Masters Thesis
    Full Text:
    Particle Tracks in Cellulose Nitrate Redacted for Privacy Abstract approved: Alan H. Robinson The work

  • Hard spectrum reactor design criterion for actinide utilization

    Creator:
    Prichard, Andrew W.
    Abstract:
    The United States nuclear industry is under significant public pressure to close the nuclear fuel cycle. Closing the fuel cycle will require that nuclear waste, fission products and transuranics, except plutonium (actinides), be disposed of by permanent burial. The actinides can be buried with the fission products, but this will...
    Resource Type:
    Masters Thesis
    Full Text:
    :_hlIA_14LeCALILM_RgALIDI_D_Qaign_LXiigrionior Abstract approved: __ Redacted for privacy "Dr. Alan H. Robinson The United States nuclear

  • One and two dimensional space-energy flux synthesis with spatially discontinuous trial functions

    Creator:
    Olson, Willard Orvin
    Abstract:
    The development of nuclear reactors as an energy source requires a substantial investment in capital and effort. This development depends heavily on accurate calculational methods. Space-energy flux synthesis, also variously called the spectral synthesis method, modal method, and overlapping group method, is one possible method. In this method the energy...
    Resource Type:
    Dissertation
    Full Text:
    ACKNOWLEDGEMENTS I would like to-thank my major professor, Dr. Alan H. Robinson. His advice and encouragement

  • Neutron shadow holography: a feasibility study

    Creator:
    Coe, Douglas H.
    Abstract:
    Neutron shadow holography is a method of obtaining a three-dimensional neutron radiograph of an object using a Fresnel zone plate as an encoding aperture. The object is reconstructed by passing laser light through a miniature copy of the radiograph. The technique has been applied extensively with X-rays and gamma rays...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract Approved: A. H. Robinson Neutron shadow holography is a method of obtaining a three-dimensional

  • A method for calculation of group-averaged resonance parameters

    Creator:
    Nail, James Harold
    Abstract:
    A method of treating resonance captures for few energy group calculations is developed using the Narrow Resonance-Infinite Absorber approximation to the resonance integral. The application of this method is not restricted to this approximation, however, as other approximations to the resonance integral could also be used. The approach presented defines...
    Resource Type:
    Masters Thesis
    Full Text:
    Resonance Parameters Redacted for Privacy Abstract approved Alan H. Robinson A method of treating

  • A study of the behavior of actinides continuously recycled in a hard spectrum reactor

    Creator:
    Schofield, Paul Edwin
    Resource Type:
    Masters Thesis
    Full Text:
    . Robinson The behavior of actinides continuously recycled through the central region of an EBR-II type

  • A knowledge-based approach for monitoring and situation assessment at nuclear power plants

    Creator:
    Heaberlin, Joan Oylear
    Abstract:
    An approach for developing a computer-based aid to assist in monitoring and assessing nuclear power plant status during situations requiring emergency response has been developed. It is based on the representation of regulatory requirements and plant-specific systems and instrumentation in the form of hierarchical rules. Making use of inferencing techniques...
    Resource Type:
    Dissertation
    Full Text:
    : Alan H. Robinson An approach for developing a computer-based aid to assist in monitoring and