ANS 2025 Summer Meeting

Chicago, IL, June 15-18, 2025

ANS-8 Standards Forum
Organizer: Douglas G. Bowen
Chair: Douglas G. Bowen
Alternate Chair: Kevin H. Reynolds

Subcommittee ANS-8, Operations with Fissile Material Outside Reactors, meets to discuss various technical and administrative aspects of the approximately 20 national consensus standards under its purview. In addition to status and progress updates by representatives of individual working groups, formal presentations on the technical bases of numerical values such as subcritical limits and experiences with applications of particular standards are solicited. Agenda topics such as new and expanded standards are also encouraged.

Reverse Knowledge Transfer - Bridging the Generational Divide
Organizer: Deborah A. Hill
Chair: Deborah A. Hill
Alternate Chair: John Miller

Knowledge transfer has traditionally been primarily viewed as a one-way process from the older generation to the younger generation, shaped by the valuable knowledge, wisdom and skills of the former. However, the concept of reverse knowledge transfer (where the two roles are reversed) has become increasingly important in today’s fast-evolving world – it is essential for keeping societies adaptive, workplaces innovative and individuals of all ages relevant and empowered. This session will interview a number of early and mid-career members of the Division. As well as seeking advice to their peers, modern insight will be sought (e.g. on technologies, trends or new ways of thinking) that can help to drive improvements in the nuclear criticality safety community, aided through this intergenerational collaboration. Questions will be solicited from the audience as part of the session.

Updates/Revisions to Series 8 Standards
Organizer: Michael Fendler
Chair: Douglas G. Bowen
Alternate Chair: Douglas G. Bowen

This Panel will help inform the NCS community of recent changes to the ANS Series 8 Standards. In particular, the recent revision to 8.3 and 8.12 will be explored. Intended panelists include members of the standards subcommittees as well as practitioners using these standards.

Data, Analysis, and Operations in Nuclear Criticality Safety: I
Organizer: Benjamin Martin
Chair: John A. Miller
Alternate Chair: Amy E. van der Vyver

Importance of the HTC Experiments for High Burnup and Extended Enrichment Fuels in Burnup Credit Criticality Safety Analyses
Mathieu Dupont (ORNL), Walid A. Metwally (ORNL)

The Effect of 155Gd and 157Gd Evaluations on the LEU-COMP-THERM-054 Benchmark Experiments
Luiz C. Leal (ORNL), Adimir dos Santos (ORNL), Travis Greene (ORNL), Mathieu Dupont (ORNL)

Preliminary CAAS Coverage Assessment for GNF-A Natrium Fuel Fabrication Facility at 20 wt.% 235U
James E. Banfield (Global Nuclear Fuel), Lon E. Paulson (GE Hitachi Nuclear Energy)

Similarity Evaluation of the STACY Core to Pseudo Fuel Debris Model
Shigeki Shiba (Nuclear Regulatory Authority of Japan)

Uncertainty of Structural Material Compositions
Jeffrey A. Favorite (LANL)

Sharing of Good Industry Practices and/or Lessons Learned in NCS
Organizer: Deborah A. Hill
Chair: Deborah A. Hill
Alternate Chair: Benjamin Martin

Fundamental to the successful operation of any nuclear site is a first-class safety culture which strives to continually improve in response to good industry practices and operating experience feedback. Presenters will provide examples of either specific good practices and / or lessons learned at their site, following which an audience discussion will be initiated on alternative good practices and experiences in these areas.

Data, Analysis, and Operations in Nuclear Criticality Safety: II
Organizer: Natalie Cannon
Chair: Benjamin Martin
Alternate Chair: Benjamin Martin

Verified, Archived Library of Inputs and Data (VALID) Online Repository
Travis M. Greene (ORNL), Robert A. Lefebvre (ORNL)

Criticality Safety Nuclide Rankings for TRISO Spent Fuel Applications
Alex Shaw (ORNL), Veronica V. Karriem (ORNL), Walid A. Metwally (ORNL)

Microreactor Assembly Transportation Cask Model for Criticality Safety Basis Assessment
Zhaopeng Zhong (ANL), Ahmed Amin Abdelhameed (ANL), Nicolas E. Stauff (ANL), Cihangir Celik (ORNL)

A New Benchmark Evaluation of Historical Experiments with HEU Cylinders and Annuli with 10-Inch Graphite Reflectors
Kathryn Worrell (Univ. Tennessee, Knoxville), Vladimir Sobes (Univ. Tennessee, Knoxville), William J. Marshall (ORNL)

Criticality Evaluations of Additional Neutron Absorber for LEU+ ATF in Fuel Storage Systems
Keon il Cha (Sejong Univ.), Kyoon ho Cha (Sejong Univ.)