Apr, 2026
Conference Paper
Publications
Showing 19 results for Author: Carol W. Sizemore
Apr, 2026
Journal
Investigation of irradiation damage and heat deposition: a comparative analysis for HEU-to-LEU conversion in HFIR
The planned conversion of the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory from highly enriched uranium (HEU) to low-enriched uranium (LEU) fuel requires detailed evaluation of experiment-relevant parameters to ensure continued performance for materials testing and isotope production. This study presents the first comprehensive assessment of displaceme…
Mar, 2026
Conference Paper
Fuel Conversion Efforts at the High Flux Isotope Reactor – a 2025 Status Update
Mar, 2026
Conference Paper
Heat Deposition Analysis of Target Materials in the High Flux Isotope Reactor for HEU and LEU Cores
Jul, 2025
ORNL Report
HFIR LEU High Density Silicide Dispersion Optimized Design Steady-State Heat Transfer Analyses
Steady-state heat transfer simulations of the Oak Ridge National Laboratory High Flux Isotope Reactor (HFIR) with the low-enriched uranium (LEU) high-density silicide dispersion Optimized fuel design were performed to support comprehensive performance and safety metric studies concerning this design. The LEU Optimized design operates at 95 MW to maintain HFIR’s current hig…
Jun, 2025
ORNL Report
HFIR LEU High Density Silicide Dispersion Optimized Design Neutronics Analyses with PHAME
A high-fidelity neutronics model of the Oak Ridge National Laboratory High Flux Isotope Reactor (HFIR) with the low-enriched uranium (LEU) high-density silicide dispersion Optimized fuel design was updated and analyzed to generate reactor physics-based metrics to support follow-on thermal hydraulic and transient analyses of this design. The Python HFIR Analysis and Measure…
Oct, 2024
Journal
Californium-252 production at the High Flux Isotope Reactor – II: Comparison between the highly enriched uranium and a proposed low-enriched uranium core
This is the second paper on a 252Cf production study performed in support of efforts to convert the High Flux Isotope Reactor (HFIR) from highly enriched uranium (HEU) to low-enriched uranium (LEU) fuel. The first paper primarily focuses on validating computational tools and nuclear data. This companion paper evaluates another critical aspect: the 252Cf production capabili…
Oct, 2024
Journal
Californium-252 production at the High Flux Isotope Reactor − I: Validation study using campaign data
This paper presents a series of 252Cf production validation and code-to-code comparison studies performed based on data from the production campaigns at the High Flux Isotope Reactor (HFIR). These studies support efforts to convert HFIR from using highly enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. HFIR must maintain its world-class performance and missi…
May, 2024
Conference Paper
High Flux Isotope Reactor Low-Enriched Uranium Conversion – Design and Fuel Qualification Overview