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648 full-text articles. Page 1 of 8.

Measurement And Prediction Of The Onset Of Intermittent Dryout During Blowdown Transients For Upward Annular Flow, Bradley A. Statham 2014 McMaster University

Measurement And Prediction Of The Onset Of Intermittent Dryout During Blowdown Transients For Upward Annular Flow, Bradley A. Statham

Open Access Dissertations and Theses

The effect of pressure transients on the onset of intermittent dryout in upward annular flow was experimentally investigated in order to resolve the conflict between the observations drawn from two major data sets in the literature. A delay in time to the onset of dryout at the test section exit relative to the time predicted based on steady-state data was observed in the R-12 experiments of Celata et al (1988; 1991). Steady-state prediction methods were sufficient to predict the upstream progression of a pre-existing dryout front in the water experiments of Lyons and Swinnerton (1983). Steady state and pressure transient ...


Solute Additives And Neutron Absorber Alloys For The Improvement Of Spent Fuel Pool Safety And Increased Storage Space, Seth H. Jobe, John R. Chalmers, Zach Hensley, Austin O'Connor, Nathan Shoman, Matthew Weeks 2014 University of Tennessee, Knoxville

Solute Additives And Neutron Absorber Alloys For The Improvement Of Spent Fuel Pool Safety And Increased Storage Space, Seth H. Jobe, John R. Chalmers, Zach Hensley, Austin O'Connor, Nathan Shoman, Matthew Weeks

University of Tennessee Honors Thesis Projects

No abstract provided.


Cd Dipping To Reduce Reactivity Of Fuel Assemblies In Spent Fuel Pools, John Clark Stooksbury 2014 University of Tennessee, Knoxville

Cd Dipping To Reduce Reactivity Of Fuel Assemblies In Spent Fuel Pools, John Clark Stooksbury

University of Tennessee Honors Thesis Projects

No abstract provided.


Improvement Of Spent Fuel Storage With Advanced Mechanical Shielding Placement, Gordon M. Petersen, Nicole Galante, Hannah Hale, Dylan Richardson, Robert Vance 2014 University of Tennessee, Knoxville

Improvement Of Spent Fuel Storage With Advanced Mechanical Shielding Placement, Gordon M. Petersen, Nicole Galante, Hannah Hale, Dylan Richardson, Robert Vance

University of Tennessee Honors Thesis Projects

No abstract provided.


Methods To Enhance Spent Fuel Pool And Dry Cask Storage, Dustin Giltnane, David Gotthold, Seth Langford, Michael Ratliff, Jessica Dawn Shewmaker, Cody Wiggins 2014 University of Tennessee, Knoxville

Methods To Enhance Spent Fuel Pool And Dry Cask Storage, Dustin Giltnane, David Gotthold, Seth Langford, Michael Ratliff, Jessica Dawn Shewmaker, Cody Wiggins

University of Tennessee Honors Thesis Projects

No abstract provided.


Time Correlated Measurements Using Plastic Scintillators With Neutron-~Photon Pulse Shape Discrimination, Norman Edison Richardson 2014 University of Nevada, Las Vegas

Time Correlated Measurements Using Plastic Scintillators With Neutron-~Photon Pulse Shape Discrimination, Norman Edison Richardson

UNLV Theses/Dissertations/Professional Papers/Capstones

Since the beginning of the nuclear age, there has been a strong demand for the development of efficient technologies for the detection of ionizing radiation. According to the United States' Department of Energy, the accurate assessment of fissile materials is essential in achieving the nonproliferation goals of enhancing safety and security of nuclear fuel cycle and nuclear energy facilities [1]. Nuclear materials can be characterized by the measurement of prompt and delayed neutrons and gamma rays emitted in spontaneous or induced fission reactions [2] and neutrons emitted in fission reactions are the distinctive signatures of nuclear materials. Today, the most ...


Simulating Scwr Thermal-Hydraulics With The Modified Cobra-Tf Subchannel Code, Dinusha Wikumpiya Lokuliyana 2014 McMaster University

Simulating Scwr Thermal-Hydraulics With The Modified Cobra-Tf Subchannel Code, Dinusha Wikumpiya Lokuliyana

Open Access Dissertations and Theses

Among the six GEN-IV reactor concepts recommended by the Gen-IV International Forum, supercritical water-cooled reactors (SCWR) have gained significant interests due to its economic advantage, technology and experience continuity. In the last few years, extensive R&D activities have been launched covering the various aspects of SCWR development, especially in thermal-hydraulic analysis. In Canada, most R&D projects are led by AECL or NRCan.

SCWR design and development require the modification of simulation codes used for design and safety demonstration of subcritical water-cooled reactors. This study modifies the subchannel code COBRA-TF, applicable to only subcritical water-cooled reactors, to a new ...


Citations Of Publications, Wojciech M. Budzianowski 2014 SelectedWorks

Citations Of Publications, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Tematyka Prac Doktorskich, Wojciech M. Budzianowski 2014 SelectedWorks

Tematyka Prac Doktorskich, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski 2014 SelectedWorks

Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Dynamic Testing Procedures For Performance Assessment Of Nuclear Fuel Rods, Travis M. Adams 2014 University of New Hampshire

Dynamic Testing Procedures For Performance Assessment Of Nuclear Fuel Rods, Travis M. Adams

Honors Theses

Existing transportation probabilistic risk assessment for spent nuclear fuel in the United States is based on short-term (decades) on-site storage at power plants before transport. Updated risk assessment estimates will be required as extended on-site storage (centuries) and higher burnup levels in fuel become standard. Nuclear fuel rods under these two conditions are more brittle than rods from short-term storage and intermediate burnup due to several mechanisms, including hydrogen embrittlement. Development of risk assessment requires characterizations of dynamic behavior of these degraded rods under transportation scenarios. This Honors thesis provides an initial literature review for a larger project that will ...


Mechanika Płynów Lab., Wojciech M. Budzianowski 2014 SelectedWorks

Mechanika Płynów Lab., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Tematyka Prac Dyplomowych Dla Studentów Wydziału Chemicznego Pwr., Wojciech M. Budzianowski 2014 SelectedWorks

Tematyka Prac Dyplomowych Dla Studentów Wydziału Chemicznego Pwr., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


C.V., Wojciech M. Budzianowski 2014 SelectedWorks

C.V., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


H-Index Rankings Of Scientists In Poland, Wojciech M. Budzianowski 2014 SelectedWorks

H-Index Rankings Of Scientists In Poland, Wojciech M. Budzianowski

Wojciech Budzianowski

This contribution provides subject area-specific h-index rankings of scientists in Poland. The rankings use Scopus scientific publications database as a publication and citation resource. 23 subject areas from Scopus are covered. The methodology of the rankings is explained.


A Review Of Graphene-Based Electrochemical Microsupercapacitors, Guoping Xiong, Chuizhou Meng, Ronald G. Reifenberger, Pedro Irazoqui, Timothy Fisher 2014 Purdue University

A Review Of Graphene-Based Electrochemical Microsupercapacitors, Guoping Xiong, Chuizhou Meng, Ronald G. Reifenberger, Pedro Irazoqui, Timothy Fisher

Birck and NCN Publications

The rapid development of miniaturized electronic devices has led to a growing need for rechargeable micropower sources with high performance. Among different sources, electrochemical microcapacitors or micro-supercapacitors provide higher power density than their counterparts and are gaining increased interest from the research and engineering communities. To date, little work has appeared on the integration of microsupercapacitors onto a chip or flexible substrates. This review provides an overview of research on microsupercapacitors, with particular emphasis on state-of-the-art graphene-based electrodes and solid-state devices on both flexible and rigid substrates. The advantages, disadvantages, and performance of graphene-based microsupercapacitors are summarized and new trends ...


Development Of A Monitoring Framework For The Detection Of Diversion Of Intermediate Products In A Generic Natural Uranium Conversion Plant, Jennifer L. Ladd-Lively 2013 University of Tennessee, Knoxville

Development Of A Monitoring Framework For The Detection Of Diversion Of Intermediate Products In A Generic Natural Uranium Conversion Plant, Jennifer L. Ladd-Lively

Doctoral Dissertations

The objective of this work is the development of an on-line monitoring and data analysis framework that could detect the diversion of intermediate products such as uranium dioxide, uranium tetrafluoride, and uranium hexafluoride in a natural uranium conversion plant (NUCP) using a multivariate statistical approach. This was an initial effort to determine the feasibility of this approach for safeguards applications. This study was limited to a 100 metric ton of uranium (MTU) per year NUCP using the wet solvent extraction method for the purification of uranium ore concentrate. A key component in the multivariate statistical methodology was the Principal Component ...


Monte Carlo And Depletion Reactor Analysis For High-Performance Computing Applications, Brenden Thomas Mervin 2013 University of Tennessee, Knoxville

Monte Carlo And Depletion Reactor Analysis For High-Performance Computing Applications, Brenden Thomas Mervin

Doctoral Dissertations

This dissertation discusses the research and development for a coupled neutron trans- port/isotopic depletion capability for use in high-preformance computing applications. Accurate neutronics modeling and simulation for \real" reactor problems has been a long sought after goal in the computational community. A complementary \stretch goal" to this is the ability to perform full-core depletion analysis and spent fuel isotopic characterization. This dissertation thus presents the research and development of a coupled Monte Carlo transport/isotopic depletion implementation with the Exnihilo framework geared for high-performance computing architectures to enable neutronics analysis for full-core reactor problems.

An in-depth case study of ...


Optimization Of Scintillator Based Radiation Portal Monitors, Matthew J. Urffer 2013 University of Tennessee, Knoxville

Optimization Of Scintillator Based Radiation Portal Monitors, Matthew J. Urffer

Doctoral Dissertations

Alternative neutron detection technologies are needed to replace the current He- 3 based Radiation Portal Monitors (RPM) which are employed to detect special nuclear material that may be entering the United States illicitly. Replacement technologies must fulfill the following criteria established by the Department of Homeland Security (DHS): 1) a neutron detection efficiency, 2) a gamma insensitivity, and 3) the performance of the detector should not suffer in the presence of a strong gamma field. Polymeric films containing Li-6 ranging from 15 to 300 microns have the ability to fulfill these criteria if suitably utilized. For a typical detector material ...


Assessing Different Zeolitic Adsorbents For Their Potential Use In Kr And Xe Separation, Breetha Alagappan 2013 University of Nevada, Las Vegas

Assessing Different Zeolitic Adsorbents For Their Potential Use In Kr And Xe Separation, Breetha Alagappan

UNLV Theses/Dissertations/Professional Papers/Capstones

Separation of Kr from Xe is an important problem in spent nuclear fuel fission gas management. The energy intensive and expensive cryogenic distillation method is currently used to separate these gases. In this thesis, we have carried out the research into appropriate sorbents for the separation of Kr and Xe using pressure swing adsorption. We have examined zeolites using gas adsorption studies as they have the potential to be more cost effective than other sorbents. Zeolites are microporous aluminosilicates and have ordered pore structures. The pores in zeolites have extra-framework cations are substantially free to move. The mobility of cations ...


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