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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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|Experimental Thermal Hydraulics
Wednesday, August 23, 2023|9:00–10:20AM EDT|Columbia 1
Session Chair:
Yue Jin (UM)
Alternate Chair:
Saya Lee (PSU)
Session Organizer:
Xiaodong Sun
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Coal Experiments Investigating the Reflooding of a 7 X 7 Rods Bundle During a Loss of Coolant Accident -- Effect of a Partially Blocked Area with Ballooned Rods
9:00–9:20AM EDT
G. Repetto (IRSN), Q. Grando (IRSN), B. Bruyère (IRSN), S. Eymery (IRSN), R. Fortman (STERN Laboratories), R. Van Lochem (STERN Laboratories)
Paper
Experimental Investigation of Minimum Film Boiling Temperature During Reflood Transients
9:20–9:40AM EDT
Turki K. Almudhhi (Penn State), Douglas J. Miller (Penn State), Grant R. Garrett (Penn State), Ian R. Lowery (Penn State), Fan-Bill Cheung (Penn State), Brian R. Lowery (Penn State), Stephen M. Bajorek (U.S. Nuclear Regulatory Commission), Kirk Tien (U.S. Nuclear Regulatory Commission), Chris L. Hoxie (U.S. Nuclear Regulatory Commission)
Spray Cooling of a Rod Bundle with a Counter-Current Steam Flow in Spent Fuel Pool Conditions
9:40–10:00AM EDT
G. Brillant (IRSN)
Uniform and Non-Uniform Flows Through a PWR-Type Rod Bundle with Mixing Grids at Reynolds Number Ranging from 800 up to 70000: Pressure Loss Measurements
10:00–10:20AM EDT
Clément Melin (CEA), Gilles Bernard-Michel (CEA), Benjamin Cariteau (CEA), Philippe Fillion (CEA)
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