Index Catalog // ScholarsArchive@OSU

Benchmark comparison of the Oregon State TRIGA reactor between MCNP6 and Serpent 2

Creator:: Law, Tyler
Abstract:: A model of the Oregon State TRIGA reactor was developed in Serpent 2 by translating a previously accepted MCNP model. Both models were verified and validated via comparison of each model and data gathered from the core start-up. Reactivity bias in each code was determined. Using the rod drop method,...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Steven Reese A model of the Oregon State TRIGA® reactor was developed in Serpent 2 by

Validation of a Transient Coupled CFD-Reactor Physics Model: An Experimental Methodology to Quantify the Accuracy of CONSTELATION for the HENRI System

Creator:: Warren, Austin M.
Abstract:: The HENRI system was developed to narrow the pulse width of TREAT from 89 ms to below 60 ms with the goal of improving the test reactor's ability to simulate RIAs in LWRs by rapidly injecting helium-3, a strong neutron poison, into the core. A coupled model using the CFD...
Resource Type:: Masters Thesis
Full Text:: approved: Guillaume P. Mignot Wade Marcum The Helium-3 Enhanced Negative Reactivity Insertion (HENRI

Temporal gamma-ray spectrometry to quantify relative fissile material content

Creator:: Williford, Russell S.
Abstract:: A new method for delayed gamma-ray spectrometry to quantify the relative content of fissile material is developed and demonstrated to support international efforts in bolstering non-destructive assay capabilities. Previous traditional delayed gamma-ray spectrometry techniques rely upon nuclear data that often carry very high uncertainty. The new method removes the requirement...
Resource Type:: Dissertation
Full Text:: : Steven R. Reese A new method for delayed gamma-ray spectrometry to quantify the relative content

Steady-State Computational Fluid Dynamics Analysis of a Quarter-Core Liquid Metal-hydride Cooled Microreactor

Creator:: Stevens, Kaeley R.
Abstract:: This thesis assessed the passive, natural circulation, design for a Bi-Ca-CaH2 cooled microreactor based on initial figures of merit. The values for the figures of merit selected for this thesis were: the maximum temperature in the core should not be more than 150 K above the average core outlet temperature,...
Resource Type:: Masters Thesis
Full Text:: ........................ 50 Figure 4.5: Locations of cross-sectional planes used for ∆P calculations

A simplification of existing methods of calculating decay heat following reactor shut-down and an investigation of the effects of power history upon decay heat

Creator:: Holm, Jerald Steven
Abstract:: A method of calculating decay heat is presented which is a simplification of existing calculational methods, the summation method in particular. The method involves the assumption that one physical process, neutron capture, is negligible in order to simplify the governing physical equations. A Greens function is derived and the decay...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jerald Steven Holm for the

The contribution of fission product decay energy uncertainty to uncertainty in calculated reactor decay power

Creator:: Baker, Steven M.
Abstract:: The uncertainty in decay energy for those fission products which contribute significantly to reactor shutdown power was evaluated. The methodology used assigned significantly larger uncertainties for data which were theoretically predicted than it did for experimentally determined data. The uncertainty was modeled as an increasing function of distance from beta...
Resource Type:: Masters Thesis
Full Text:: uncertainty to uncertainty in calculated reactor decay power AN ABSTRACT OF THE THESIS OF Steven M. Baker

A Beta-Gamma Radioxenon Detection System using Ultra-Bright Inorganic Scintillators and Solid State Detectors

Creator:: Czyz, Steven A.
Abstract:: The atmospheric detection of four radioxenon isotopes (131mXe, 133mXe, 133Xe, and 135Xe) released during a nuclear detonation is a key tool utilized by the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) to identify clandestine nuclear weapon testing activity. These radioxenon isotopes all decay via the near-simultaneous release of an electron and a...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Steven A. Czyz for the degree of Doctor of Philosophy in Nuclear

A Compact Radioxenon Detection System Using CZT, an Array of SiPMs, and a Plastic Scintillator

Creator:: Czyz, Steven A.
Abstract:: Several radioxenon isotopes (¹³¹ᵐXe, ¹³³Xe, ¹³³ᵐXe, ¹³⁵Xe) are characteristic byproducts of nuclear explosions, and due to their chemically nonreactive nature can easily escape from tests occurring underground and enter the atmosphere. It has been shown that by utilizing beta-gamma coincidence techniques, the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) can...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Steven A. Czyz for the

Characterization of the Advanced Plant Experiment (APEX) passive residual heat removal system heat exchanger

Creator:: Stevens, Owen L.
Abstract:: The Oregon State University (OSU) Radiation Center (RC) is the location of a one quarter scale model of the Westinghouse Electric Corporation advanced light-water nuclear reactor design called the AP-600. The full scale AP-600 is a 600 megawatt electric nuclear power plant that incorporates unique passive systems to perform the...
Resource Type:: Masters Thesis
Full Text:: ). PRHR Hx tube row head loss, i.e. hLA is the tube row A head loss, AP/p; ft lbf/lbm, Pa/(kg*m3); eq

Control Rod Shadowing Effects in Control Rod Calibrations of The Oregon State TRIGA® Reactor

Creator:: Spoerer, Tracey T.
Abstract:: Control rod calibration experiment results for the Oregon State TRIGA® Reactor (OSTR) immediately following LEU conversion in 2008, and MCNP® 5 predicted rod worths from the 2008 LEU Conversion Safety Analysis Report (CSAR) are discussed. The reactivity worth of the four OSTR control rods are measured using the rod-pull method....
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Steven Reese

ScholarsArchive@OSU

Benchmark comparison of the Oregon State TRIGA reactor between MCNP6 and Serpent 2

Validation of a Transient Coupled CFD-Reactor Physics Model: An Experimental Methodology to Quantify the Accuracy of CONSTELATION for the HENRI System

Temporal gamma-ray spectrometry to quantify relative fissile material content

Steady-State Computational Fluid Dynamics Analysis of a Quarter-Core Liquid Metal-hydride Cooled Microreactor

A simplification of existing methods of calculating decay heat following reactor shut-down and an investigation of the effects of power history upon decay heat

The contribution of fission product decay energy uncertainty to uncertainty in calculated reactor decay power

A Beta-Gamma Radioxenon Detection System using Ultra-Bright Inorganic Scintillators and Solid State Detectors

A Compact Radioxenon Detection System Using CZT, an Array of SiPMs, and a Plastic Scintillator

Characterization of the Advanced Plant Experiment (APEX) passive residual heat removal system heat exchanger

Control Rod Shadowing Effects in Control Rod Calibrations of The Oregon State TRIGA® Reactor

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