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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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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Nuclear Science and Engineering
December 2025
Nuclear Technology
November 2025
Fusion Science and Technology
Latest News
DNFSB’s Summers ends board tenure, extending agency’s loss of quorum
Lee
Summers
The Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that Department of Energy facilities are protective of public health and safety, announced that the board’s acting chairman, Thomas Summers, has concluded his service with the agency, having completed his second term as a board member on October 18.
Summers’ departure leaves Patricia Lee, who joined the DNFSB after being confirmed by the Senate in July 2024, as the board’s only remaining member and acting chair. Lee’s DNFSB board term ends in October 2027.
18th International Probabilistic Safety Assessment and Analysis (PSA 2023)
Technical Session|Modeling, Analysis, and Methods (Advanced Methods and Tools)
Monday, July 17, 2023|3:15–5:00PM EDT|300A
Session Chair:
Nathan Siu (Retired_NRC)
Alternate Chair:
Camille Levine (Univ MD, College Park)
Session Organizer:
Askin Guler Yigitoglu
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Back to Basics: First Principles of HRA
3:15–3:40PM EDT
Torrey Mortenson (INL), Vincent Philip Paglioni (Univ. Maryland, College Park), Ronald Boring (INL)
Paper
Base Standardized Plant Analysis Risk (SPAR) Model Human Failure Event Application of Integrated Human Event Analysis System for Event and Condition Assessment (IDHEAS-ECA)
3:40–4:05PM EDT
Christopher Hunter (U.S. Nuclear Regulatory Commission), Qin Pan (U.S. Nuclear Regulatory Commission), Y. James Chang (U.S. Nuclear Regulatory Commission), Jing Xing (U.S. Nuclear Regulatory Commission), Kevin Coyne (U.S. Nuclear Regulatory Commission)
A Framework for Time-Based Human Reliability Evaluation Method in Dynamic PSA
4:05–4:30PM EDT
Wooseok Jo (Ulsan Nat'l Institute Science and Technology), Seung Jun Lee (Ulsan Nat'l Institute Science and Technology)
Estimating the Contributions to Human Error Probability from the Convolution of the Distribution of Time Available and Time Required
4:30–4:55PM EDT
Brett A. Jefferson (PNNL), Garill Coles (PNNL), Jessica Baweja (PNNL), Yung Hsien James Chang (U.S. Nuclear Regulatory Commission), Rajiv Prasad (PNNL)
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