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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.
Yoshihiro Asano, Toshiro Itoga, Xavier Marechal
Nuclear Technology | Volume 168 | Number 2 | November 2009 | Pages 387-390
Shielding | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Protection | doi.org/10.13182/NT09-A9214
Articles are hosted by Taylor and Francis Online.
The characteristics of radiation were investigated for a prototype X-ray free electron laser machine with 250-MeV electrons and 49-nm-wavelength light. The doses both inside and outside the shield tunnel including the maze were measured in relation to the electron beam losses and were compared with the empirical formula and Monte Carlo simulations.