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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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NRC proposed rule for licensing reactors authorized by DOE, DOD
Nuclear reactor designs approved by the Department of Energy or Department of Defense could get streamlined pathways through the Nuclear Regulatory Commission’s commercial licensing process should applicants wish to push the technology into the civilian sector.
A proposed rule introduced April 2 by the NRC would “improve NRC licensing review efficiency, where applicable, by explicitly establishing by regulation an additional means for reactor applicants to demonstrate the safety functions of their reactor designs, and thus, would contribute to the safe and secure use and deployment of civilian nuclear energy technologies.”
18th International Probabilistic Safety Assessment and Analysis (PSA 2023)
Workshop
Sunday, July 16, 2023|12:00–5:00PM EDT|Marriott Knoxville Downtown
Max. Attendees: 50
Description: Dynamic PRA methodologies explicitly account for the time element in probabilistic system evolution and heavily incorporate plant analysis/simulator tools to model possible dependencies between failure events that may arise from hardware/software/firmware/process/ human interactions. Dynamic PRA methodologies can also quantify the effects of phenomenological variability and model uncertainties on the consequences of upset conditions. They can benefit the PRA modeling of passive systems, including the representation of aging effects and digital instrumentation and control systems.
The workshop's objective is to provide a perspective on dynamic PRA methodologies, the circumstances under which they may be needed, and the existing challenges with their deployment. The use of some of the available software tools will be demonstrated.
Agenda
12:00 - 12:10 pm
Welcome and Introduction of Participants – Askin Guler Yigitoglu
12:10 - 12:25 pm
Dynamic PRA: A Historical Perspective by Tunc Aldemir (OSU) and Askin Guler Yigitoglu (ORNL)
12:25 - 12:45 pm
Current Activities and Methods by Valentin Rychkov and Claudia Picoco (EDF)
12:45 - 01:05 pm
01:05 - 01:45 pm
RAVEN Overview by Mohammad G. Abdo (INL)
01:45 - 02:30 pm
EMRALD Overview by Robby Christian (INL)
2:30 - 2:50 pm
Break
2:50 - 03:30 pm
EMRALD Demonstration by Robby Christian (INL)
3:30 - 4:15 pm
RAVEN LWR Demonstration by Mohammad G. Abdo (INL)
4:15 - 4:30 pm
DPRA for Advanced Reactors by Askin Guler Yigitoglu (ORNL)
4:30 - 5:00 pm
Wrap-up and Open Discussion
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Attachment — Statecharts as a Dynamic Method for PRA_Abstract
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