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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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|Panel
Friday, November 12, 2021|10:10AM–12:10PM EST
Session Chair:
Richard S. Denning
Session Organizer:
Alternate Chair:
Jeff Gabor (Jensen Hughes)
Session Producer:
Chase Blaeser
Panelists will describe recent advances in computer codes for use in Level II/III PRA with emphasis on non light water reactors. Jennifer Leute will describe improvements in the MACCS code related to radionuclide dispersion and consequence analysis. Larry Humphries will describe modifications to MELCOR to expand its applicability to advanced reactor accident behavior. Dave Grabaskas will describe advanced reactor accident modeling developments in the DOE NEAMS program. Francis Bolger will describe EPRI accident modeling development activities.
Jennifer Leute
Sandia
David Grabaskas
ANL
Francis Bolger
EPRI
Larry Humphries
SNL
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