ANS 2024 Summer Meeting

Las Vegas, NV, June 16-19, 2024

Program Description

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

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.

Innovation in Nuclear Criticality Safety
Organizer: Deborah A. Hill
Chair: Ben Martin
Alternate Chair: James I. Cole

The PARADIGM Project: An Integral Experiment Optimized to Reduce Plutonium Intermediate Energy Nuclear Data Uncertainties
T. Cutler (LANL), K. Amundson (LANL), P. Brain (LANL), M. Devlin (LANL), N. Gibson (LANL), J. Hutchinson (LANL), N. Kleedtke (LANL), R. Little (LANL), D. Neudecker (LANL), E. Williamson (LANL)

Criticality Safety Support for Deactivated Facilitates at Savannah River Site
Tracy E. Stover (Savannah River Nuclear Solutions), David Lehner (Savannah River Nuclear Solutions)

Nuclear Criticality Safety Considerations for Hydraulic Elevator Systems
Adam Walker (Y-12 Nat'l Security Complex), Joshua Schwartz (Y-12 Nat'l Security Complex)

Equivalency Factors and Mixed Isotope Subcritical Limits in H-Canyon
R.M. Rice (Savannah River Nuclear Solutions), T.E. Stover (Savannah River Nuclear Solutions), N.P. Devine (Savannah River Nuclear Solutions), D. Randle (Savannah River Nuclear Solutions)

Nuclear Criticality Safety: General I
Organizer: Benjamin Martin
Chair: Catherine M. Percher
Alternate Chair: Walid A. Metwally

How to Safely Build a Criticality Experiment with 100-plus Kilograms of Weapons-Grade Plutonium
J. Hutchinson (LANL), T. Cutler (LANL), M. Grosskopf (LANL), D. Hayes (LANL), I. Michaud (LANL), T. Smith (LANL), N. Thompson (LANL), N. Wynne (LANL)

Criticality Safety Calculations for Inadvertent PuF6 Formation
Brindley Wade (TAMU), Tracy E. Stover (Savannah River Nuclear Solutions)

Nuclear Criticality Safety Co-Analyst Guide
Zachary Jaczesko (Y-12 National Security Complex)

On Estimating Uncertainty in Integral Benchmarks due to Inconsistencies in Geometrical Measurements
Kathryn Worrell (Univ. Tennessee, Knoxville), Vladimir Sobes (Univ. Tennessee, Knoxville), William Marshall (ORNL)

Zirconium Sludge Criticality Calculations in Large Process Tanks
Brindley Wade (TAMU), Nathan Devine (Savannah River Nuclear Solutions)

Nuclear Data Needs for Nuclear Criticality Safety and Advanced Reactor Concepts: I
Organizer: Kelsey Amundson
Chair: Kelsey Amundson
Alternate Chair: Jesse Brown

Current Overview of Neutron Moderator Thermal Scattering Kernels for HALEU-Fueled Advanced Reactors
Iyad I. Al-Qasir (ORNL), K. Lisa Reed (ORNL), W.J. Marshall (ORNL), Mathieu N. Dupont (ORNL), Chris W. Chapman (ORNL), Donny Hartanto (ORNL), Walid A. Metwally (ORNL), William A. Wieselquist (ORNL)

Nuclear Data Sensitivity/Uncertainty Studies of Tantalum-Reflected Systems
J. Hutchinson (LANL), R. Bulso (LANL), T. Cutler (LANL), N. Kleedtke (LANL), R. Little (LANL), I. Michaud (LANL), M. Rising (LANL)

Data Assimilation Using Deterministic Sampling Method to Selectively Reduce Uncertainty due to Thermal Neutron Scattering Law for Light Water
Yoshinari Harada (Nagoya Univ.), Hibiki Yamaguchi (Nagoya Univ.), Tomohiro Endo (Nagoya Univ.), Akio Yamamoto (Nagoya Univ.), Kenichi Tada (Japan Atomic Energy Agency)

Neutronics Study of HTR-10: Impact of Graphite Porosity Representation in ENDF/B-VIII.1 TSLs
Kemal Ramic (ORNL), Iyad Al-Qasir (ORNL), Friederike Bostelmann (ORNL), Chris W. Chapman (ORNL), Anne Campbell (ORNL), Kyle B. Grammer (ORNL), Zain Karriem (ORNL), Jose Ignacio Marquez Damian (European Spallation Source ERIC), Mark Baird (ORNL), Dorothea Wiarda (ORNL), Luke Daemen (ORNL), Eric Novak (ORNL), Jesse Brown (ORNL), Goran Arbanas (ORNL), Luiz Leal (ORNL), Germina Ilas (ORNL), William A. Wieselquist (ORNL)

Cross-Section Sensitivity Studies on Sodium-Cooled Fast Neutron Reactor Isotopes
A.C. Hellinger (PNNL), C.E. Goodson (PNNL), S.M. Lyons (PNNL)

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

The ANS-8 Forum allows the Nuclear Criticality Safety (NCS) community to learn about the consensus standards that are under development and what kinds of work items are being considered by the ANS-8 Subcommittee. ANS-8 working groups will also provide discussions about working group tasks and opportunities for stakeholders and volunteers to learn more about ANS-8 standards. Students and early-career individuals interested in standards are welcome to participate.

Nuclear Data Needs for Nuclear Criticality Safety and Advanced Reactor Concepts: II
Organizer: Kelsey Amundson
Chair: Kelsey Amundson
Alternate Chair: Jesse Brown

Nuclear Data Needs for MCFR Reactors
T. Cisneros (TerraPower), M. Wargon (TerraPower)

Design of Pre-Moderated Pulsed-Neutron Die-Away Experiments to Validate the Thermal Scattering Law of Beryllium
Rida Rahman (Univ. Tennessee, Knoxville), Daniel Siefman (Univ. California, Berkeley), Ruby Araj (LLNL), Catherine Percher (LLNL), Vladimir Sobes (Univ. Tennessee, Knoxville)

Bayesian Inference Re-estimation of 9Be(α, n) Cross Sections by Using Neutron Spectra Measurements
Sylvain Bertholon (CEA), Anis Ben-Yelles (CEA), David Bernard (CEA)

Review of Available Critical Experiments and Critical Experiments Facilities to Perform High-Assay Low-Enriched Uranium Fuel Transport Validation for Advanced Reactor Deployment
M.N. Dupont (ORNL), K.L. Reed Fassino (ORNL), W.J. Marshall (ORNL), W.A. Metwally (ORNL), W.A. Wieselquist (ORNL)

A Methodology for Validating the Evolution of Start-up Neutron Sources
Anis Ben-Yelles (CEA)

Nuclear Criticality Safety: General II
Organizer: Benjamin Martin
Chair: Ashley Raster
Alternate Chair: Michael A. Fendler

Flattop-HEU Benchmark Reevaluation Summary
Kristin Stolte (LANL), Theresa Cutler (LANL)
Presented by John Bess (JFoster and Assoc.)

Effect of Decay Time on Criticality Safety Analyses for High-Burnup and Extended Enrichment Fuels
A.M. Shaw (ORNL), W.A. Metwally (ORNL), M.N. Dupont (ORNL), W.J. Marshall (ORNL), C. Celik (ORNL), V. Karriem (ORNL), A. Lang (ORNL), K.L. Reed (ORNL)

A Resolved Resonance Evaluation for 51V with Resonance Parameter Covariance
Luiz Leal (ORNL), Goran Arbanas (ORNL), Nicolas Leclaire (IRSN), Klaus Guber (ORNL), Peter Schillebeeckx (EC, JRC-Geel), Stefan Kopecky (EC, JRC-Geel), Carlos Paradela (EC, JRC-Geel), Ettore Marcello Mafucci (Univ. degli Studi di Torino)

HALEU (LEU+) Commercial LWR Fuel Fabrication at 8 wt.% 235U
Lon E. Paulson (GE Hitachi Nuclear Energy), James F. DeGolyer (GE Hitachi Nuclear Energy), Brian K. Stone (GE Hitachi Nuclear Energy), David A. Eghbali (GE Hitachi Nuclear Energy), James E. Banfield (GE Hitachi Nuclear Energy), Joshua W. Thomas (GE Hitachi Nuclear Energy), Charles R. Priest (GE Hitachi Nuclear Energy), Ethan T. Reisker (GE Hitachi Nuclear Energy), Maddison C. Barber (GE Hitachi Nuclear Energy)

Conducting MUSiC Modeling Studies
W.J. Marshall (ORNL), M.T. Brandt (U.S. Naval Academy), L.M. Mulig (U.S. Naval Academy), T.M. Greene (ORNL), S.R. Blair (U.S. Naval Academy), A.M. Shaw (ORNL)

Integration of NCS into Facility Maintenance
Organizer: Kristan M. Wessels
Chair: Kristan M. Wessels
Alternate Chair: Kevin H. Reynolds

Nuclear criticality safety process analysis is required to determine that the entire process will be subcritical under both normal and credible abnormal upsets. The analysis documents generated tend to focus on the operating process and does not always address infrequent activities like preventative and/or corrective maintenance. Panelists will discuss the interface of NCS and maintenance activities at their facility.

Nuclear Criticality Safety: General III
Organizer: Benjamin Martin
Chair: Katy Worrell
Alternate Chair: Amy E. van der Vyver

Impact of Increased Monte Carlo Parameters on Sensitivity Calculations with SCALE
Travis M. Greene (ORNL), Kursat Bekar (ORNL)

Jemima Plate Characterization
J. Lamproe (LANL), K. Amundson (LANL), T. Cutler (LANL), K. Stolte (LANL)
Presented by Zachariah Rudy Lemke (LANL)

Investigating a Potential Hafnium Bias in SCALE
T.M. Greene (ORNL), W.J. Marshall (ORNL), M.T. Brandt (U.S. Naval Academy), L.M. Mulig (U.S. Naval Academy), S.R. Blair (U.S. Naval Academy), A.M. Shaw (ORNL)

Chlorine Worth Study and Nuclear Data
Nicholas W. Thompson (LANL), Theresa Cutler (LANL), Kelsey Amundson (LANL), Jeffrey A. Favorite (LANL), Travis Grove (LANL), Jesson Hutchinson (LANL), Noah Kleedtke (LANL)

ANS-8 Nuclear Criticality Safety Standards -- Are they Risk Informed, Performance Based?
Douglas G. Bowen (ORNL)