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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Latest News
2025 annual assessments out for U.S. reactors
The Nuclear Regulatory Commission has released its 2025 annual performance assessments of the country’s 95 operating commercial nuclear reactors. And of the 95 reactors, all but five earned the highest marks.
Nuclear power plant assessments can fall under one of five categories: Licensee Response, Regulatory Response, Degraded Cornerstone, Degraded Performance, and Unacceptable Performance. Ninety reactors fell under Licensee Response, the highest performance category in safety and security. Plants that achieve this level of performance are subject to a Reactor Oversight Process (ROP) baseline inspection.
Technical Session|Monte Carlo Methods and Applications
Monday, April 28, 2025|1:00–2:40PM MDT|Lawrence B
Session Chair:
Dan Kotlyar (Georgia Tech)
Alternate Chair:
David Griesheimer (Naval Nuclear Laboratory)
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A Hybrid Cross Section Generation Method Using Monte Carlo Codes for Nuclear Thermal Propulsion Nodal Diffusion Analysis
1:00–1:25PM MDT
Jacob Smith (Georgia Tech), Dan Kotlyar (Georgia Tech)
Paper
Clarification on the Various Methods of Calculating the P1 Transport Cross Section Using Monte Carlo Codes
1:25–1:50PM MDT
Vidor H. Lujan (Georgia Tech), Bailey Painter (Georgia Tech), Dan Kotlyar (Georgia Tech)
Multigroup Cross Section Generation with the Shift Monte Carlo Code
1:50–2:15PM MDT
Tara Pandya (ORNL), Friederike Bostelmann (ORNL), Donny Hartanto (ORNL), Steven Hamilton (ORNL), Matthew Jessee (ORNL), Nicholas Luciano (ORNL), Tarek Ghaddar (ORNL)
Implementation of the Iterated Fission Probability Method in OpenMC to Compute Adjoint-Weighted Kinetics Parameters
2:15–2:40PM MDT
Joffrey Dorville (ANL), Luke Labrie-Cleary (Copenhagen Atomics), Paul K. Romano (ANL)
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