ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Mar 2026
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
March 2026
Nuclear Technology
February 2026
Fusion Science and Technology
April 2026
Latest News
NRC approves TerraPower construction permit
Today, the Nuclear Regulatory Commission announced that it has approved TerraPower’s construction permit application for Kemmerer Unit 1, the company’s first deployment of Natrium, its flagship sodium fast reactor.
This approval is a significant milestone on three fronts. For TerraPower, it represents another step forward in demonstrating its technology. For the Department of Energy, it reflects progress (despite delays) for the Advanced Reactor Demonstration Program (ARDP). For the NRC, it is the first approval granted to a commercial reactor in nearly a decade—and the first approval of a commercial non–light water reactor in more than 40 years.
Technical Session|Water-Cooled Reactor Operations and Accident Analysis
Tuesday, August 22, 2023|9:00–10:20AM EDT|Columbia 3/4
Session Chair:
Ki-Yong Choi (KAERI)
Alternate Chair:
Jun Liao (Westinghouse)
Session Organizer:
Chul-Hwa Song
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Prioritization of Regulatory Review Focuses on the Safety Analysis of Passive Safety System by REPAS Method
9:00–9:20AM EDT
Ju Yeop Park (Korea Institute of Nuclear Safety), Seong-Su Jeon (FNC Technology Co.), Yougjae Park (FNC Technology Co.), Jehee Lee (FNC Technology Co.)
Paper
Presentation Slides (Visible to Attendees) — presentation slides_JYP_rev01
To join the conversation, you must be logged in and registered for the meeting.