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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|New and Advanced Reactors
Tuesday, August 22, 2023|10:45AM–12:25PM EDT|Columbia 3/4
Session Chair:
Paolo Balestra (INL)
Alternate Chair:
Sunming Qin (INL)
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Modeling the Prismatic HTGR Core in SAM by Representative Channels
10:45–11:05AM EDT
Taiyang Zhang (Univ. Illinois, Urbana-Champaign), Thanh Hua (ANL), Zhiee Jhia Ooi (ANL), Ling Zou (ANL), Caleb S. Brooks (Univ. Illinois, Urbana-Champaign)
Paper
A Demonstration of the Risk-Informed NEI 18-04 Design Evaluation Model for the Modular High Temperature Gas Reactor
11:05–11:25AM EDT
Cesare Frepoli (FPoliSolutions), Stephen A. Heagy (FPoliSolutions), Jarrett Valeri (FPoliSolutions), Robert P. Martin (BWXT Advanced Technologies), Curtis L. Smith (INL), Kurt G. Vedros (INL)
Analysis of Flow Area in the Axial Cross-Vessel Annular Duct Following a Breach of the Primary Helium Boundary of an HTGR
11:25–11:45AM EDT
Silvino A. Balderrama Prieto (INL), David J. Arcilesi (Univ. Idaho)
Optimization of the Emergency Coolant Injection System of ALLEGRO
11:45AM–12:05PM EDT
Boris Kvizda (VUJE), Slavomír Bebjak (VUJE)
High-Fidelity Simulation of Pebble Beds: Toward an Improved Understanding of the Wall Channeling Effect
12:05–12:25PM EDT
David Reger (Penn State), Elia Merzari (Penn State), Saya Lee (Penn State), Paolo Balestra (INL), Yassin A. Hassan (TAMU)
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