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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Building momentum for a stronger ANS
Hash Hashemianpresident@ans.org
The 2025 ANS Annual Conference in Chicago was a powerful springboard to begin my term as president. With over 1,400 attendees, it was one of our most dynamic gatherings in recent memory—full of energy, ideas, and a shared commitment to advancing nuclear science and technology.
As we move forward, my focus is clear: to elevate the role of nuclear in environmental protection, national security, energy diversity, and grid stability. These priorities are not just strategic—they are essential to a cleaner, more resilient future.
The goals I laid out at the conclusion of the Board of Directors meeting in June are simple, but I am sure they will be effective in engaging our community.
One simple change to start is the move away from the term meetings—the American Nuclear Society now uses the term conferences to describe its two yearly flagship gatherings, to more appropriately reflect the more than 1,000 attendees that these events bring together.
Advanced Reactor Safety (ARS)
Technical Session
Wednesday, June 19, 2024|10:00–11:45AM PDT|Palm A
Session Chair:
Aslak Stubsgaard
Session Organizer:
Alternate Chair:
Mihai A. Diaconeasa
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Improving the Efficiency of Dynamic Probabilistic Risk Assessment with Monte Carlo Tree Search and Importance Sampling
10:00–10:20AM PDT
Joseph O'Leary (Univ. Maryland), Yunfei Zhao (Univ. Maryland)
Paper
Towards a Deep-Learning based Heuristic for Optimal Variable Ordering in Binary Decision Diagrams to Support Fault Tree Analysis
10:20–10:40AM PDT
Arjun Earthperson (NCSU), Egemen M. Aras (NCSU), Asmaa A. Farag (NCSU), Mihai A. Diaconeasa (NCSU)
Quantifying Safety System Unavailability Margins via Inverse Estimation of Event Sequence Frequencies
10:40–11:00AM PDT
Arjun Earthperson (NCSU), Priyanka M. Pandit (NCSU), Mihai A. Diaconeasa (NCSU)
Markov Decision Processes for Intelligent, Risk-Informed Asset-Management Decision-Making
11:00–11:20AM PDT
David Grabaskas (ANL), Yunfei Zhao (Ohio State), Carol Smidts (Ohio State), Vera Moiseytseva (ANL), Roberto Ponciroli (ANL), Pascal Brocheny (Framatome)
Data Updating Model Development with Bayesian Inference for Data Analysis for Probabilistic Risk Assessment Application
11:20–11:40AM PDT
Joomyung Lee (NCSU), Rawan Mustafa (NCSU), Mostafa Hamza (NCSU), Olivier Retourne (X-energy), Huafei Liao (X-energy), Glen Lawson (X-energy), Mihai A. Diaconeasa (NCSU)
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