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
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!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
The Frisch-Peierls memorandum: A seminal document of nuclear history
The Manhattan Project is usually considered to have been initiated with Albert Einstein’s letter to President Franklin Roosevelt in October 1939. However, a lesser-known document that was just as impactful on wartime nuclear history was the so-called Frisch-Peierls memorandum. Prepared by two refugee physicists at the University of Birmingham in Britain in early 1940, this manuscript was the first technical description of nuclear weapons and their military, strategic, and ethical implications to reach high-level government officials on either side of the Atlantic. The memorandum triggered the initiation of the British wartime nuclear program, which later merged with the Manhattan Engineer District.
2024 International Congress on Advances in Nuclear Power Plants (ICAPP)
Technical Session|Plant Safety, Regulations, and Licensing
Tuesday, June 18, 2024|1:00–2:45PM PDT|Palm D
Session Chair:
Mostafa Hamza (NCSU)
Alternate Chair:
Mihai A. Diaconeasa (NCSU)
Session Organizers:
Toru Nakatsuka (Japan Atomic Energy Agency)
Kukhee Lim (Korea Institute of Nuclear Safety)
Track Organizers:
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Multiple Radionuclides Source Term Estimation for Nuclear Accidents Based on Gaussian Puff Model and Ensemble Kalman Inversion
1:00–1:20PM PDT
Siho Jang (Seoul Nat'l Univ.), Juryong Park (Seoul Nat'l Univ.), Eung Soo Kim (Seoul Nat'l Univ.)
Paper
Iodine Suppression by Pool Reactor In-Vessel Storage
1:20–1:40PM PDT
Barry Mingst (TerraPower)
Engagement Activities with the United Kingdom Regulators for the Westinghouse Lead Fast Reactor
1:40–2:00PM PDT
J. Liao (Westinghouse Electric Co.), P. Ferroni (Westinghouse Electric Co.), F. Franceschini (Westinghouse Electric Co.), C.A. Stansbury (Westinghouse Electric Co.), A. Levinsky (Westinghouse Electric Co.), J. Preston (Westinghouse Electric Co.), A. Schroeder (Westinghouse Electric Co.), N. Shulyak (Westinghouse Electric Co.), R.F. Wright (Westinghouse Electric Co.), S.J. Lee (Fauske & Assoc.), M. Caramello (Ansaldo Nucleare), M. Frignani (Ansaldo Nucleare), M. Tarantino (ENEA), G. Grasso (ENEA)
Presentation Slides (Visible to Attendees)
Decommissioning Options at Sodium-Cooled Fast Reactors
2:00–2:20PM PDT
To join the conversation, you must be logged in and registered for the meeting.