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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.
Lung Kwang Pan, Cheng Si Tsao
Nuclear Technology | Volume 102 | Number 3 | June 1993 | Pages 313-322
Technical Paper | Nuclear Fuel Cycle | doi.org/10.13182/NT93-A17030
Articles are hosted by Taylor and Francis Online.
A nondestructive measurement of spent fuel pins from the Taiwan Research Reactor has been performed at the Institute of Nuclear Energy Research. The analysis is based on a simplified balance equation for integrated flux and a series of one-group burnup-dependent microscopic cross-section libraries. A semiempirical test is used for evaluating the burnup values of two different kinds of spent fuel pins [natural uranium (0.7% 235U) and enriched uranium (7.0% 235U)] by the 134Cs/137Cs activity ratio. Results are compared with radiochemical burnup measurements. The agreement is within 3.8%, which verifies the accuracy of this method. The results are also compared with a theoretical estimation by the ORIGEN-II code. This indicates that the ORIGEN-II code’s library might have an overestimated σa (133Cs), which leads to a 134Cs/137Cs ratio that would result in a burnup value ∼24 to 35% lower than the measured data.
