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 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
Latest Magazine Issues
Jun 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
July 2026
Nuclear Technology
June 2026
Fusion Science and Technology
May 2026
Latest News
FERC approves Constellation waiver request on Crane restart
The Federal Energy Regulatory Commission has approved Constellation’s waiver request to transfer PJM capacity interconnection rights from one of its gas- and oil-powered plants to its Crane nuclear power plant (formerly Three Mile Island-1).
While Constellation executives previously said that an unsuccessful waiver request wouldn’t have prevented the Middletown, Pa., plant from restarting as soon as 2027, it could have impacted whether Crane could fully deliver power to the grid once it is on line. The decision, issued by FERC on June 1, likely helps facilitate Constellation’s path forward for the plant’s restart.
Technical Session
Tuesday, September 16, 2025|10:00–11:40AM CDT|Grand Salon DE
Session Chair:
Chris Chapman (ORNL)
Alternate Chair:
Travis M. Greene
Session Organizer:
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
CALINS: A New ASNR Software for Sensitivity and Uncertainty Analysis in Nuclear Criticality Safety Evaluations
10:00–10:20AM CDT
PETILLON Barthélémi (ASNR), PERON Arthur (ASNR), VUIART Romain (ASNR), JAISWAL Vaibhav (ASNR), BROVCHENKO Mariya (ASNR)
Paper
CRISTALV2.1: The Next Version of the Cristal V2 Criticality Calculation Package - News and Improvements
10:20–10:40AM CDT
Arnaud Entringer (ASNR), Coralie Carmouze (CEA), Francois-Xavier Giffard (CEA), Sebastien Lahaye (CEA), Stephane Mengelle (CEA), Tangi Nicol (CEA), Arthur Peron (ASNR), Odile Petit (CEA), Julien Taforeau (ASNR), Romain Vuiart (ASNR)
MCNP Criticality Calculation Support using Cyclone Sage AI Assistant
10:40–11:00AM CDT
Daniel Cork (Orthrus Software), Tom Page (Cerberus Nuclear)
LATEC-2.0, the CRISTALV2.1 Package Workbench for Integrated Criticality Modeling
11:00–11:20AM CDT
Arthur Peron (ASNR), Arnaud Entringer (ASNR)
Learning from Transitioning between Criticality Codes, including the Development of a Modelling Library
11:20–11:30AM CDT
Shaun Digwood (Urenco Capenhurst)
