Modified Point-Kinetics Model for Neutron Precursors and Fission Product Behavior for Fluid-Fueled Molten Salt Reactors

Survey and Assessment of Computational Capabilities for Advanced (Non-LWR) Reactor Mechanistic Source Term Analysis.

“…The tool was designed to be as generic as possible to MSRs, but the authors note that its application to different reactor concepts such as fast spectrum reactors or pebble bed reactors may require a swapping out of the neutronics module or thermal hydraulic module, owing to the code's inherent ability to be tailored to the user's needs. For example, they implement a modified point-kinetics model with neutron precursor drift into a system modeling tool for application to a thermal spectrum, fluoride salt-fueled MSR, and further adapt that model for the generation, decay, reactivity feedback, and decay heat modeling of fission products [160]. By treating fission products as trace substances in the bulk flow, they allow for mass accountancy of these low concentration substances without having to worry about its effect on the other physical and chemical properties.…”

Dynamic System Models for Informing Licensing and Safeguards Investigations of Molten Salt Reactors (Revision 1)

“…For transport purposes, the various products are modeled as trace substances. Greenwood and Betzler's forthcoming publication (Greenwood and Betzler 2018) provides a more detailed description of the kinetics model used in this paper. The following subsections provide brief descriptions of the various parameters of the model.…”

“…The modified kinetics model used in this study is a point kinetics type model (Greenwood and Betzler 2018). The power profile is specified by the user instead of being determined by the physics of the system.…”

Nuclear Hybrid Energy Systems South East Regional Case Progress Report

“…The TRANSient Simulation Framework Of Reconfigurable Modules (TRANSFORM) [3] is a component library developed at Oak Ridge National Laboratory (ORNL) using the Modelica programming language to investigate dynamic thermal-hydraulic systems and other multiphysics systems. The TRANSFORM library has been successfully used for a variety of nuclear applications, including investigations into the performance of NHESs [4,5], liquid metal [6] and gas-cooled reactors [7], and molten salt applications, including kinetic behavior and fission product transport [8][9][10].…”