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NRC looks to leverage previous approvals for large LWRs
During this time of resurging interest in nuclear power, many conversations have centered on one fundamental problem: Electricity is needed now, but nuclear projects (in recent decades) have taken many years to get permitted and built.
In the past few years, a bevy of new strategies have been pursued to fix this problem. Workforce programs that seek to laterally transition skilled people from other industries, plans to reuse the transmission infrastructure at shuttered coal sites, efforts to restart plants like Palisades or Duane Arnold, new reactor designs that build on the legacy of research done in the early days of atomic power—all of these plans share a common throughline: leveraging work already done instead of starting over from square one to get new plants designed and built.
Walter A. Hackler, Chihiro Kikuchi
Nuclear Science and Engineering | Volume 31 | Number 2 | February 1968 | Pages 175-182
Technical Paper | doi.org/10.13182/NSE68-A18229
Articles are hosted by Taylor and Francis Online.
The effects of fast-neutron and electron-induced defects on the diffusion properties of lithium in silicon have been studied. Lithium-diffused diodes were irradiated and later drifted with reverse bias at a constant temperature. Results show that fast-neutron and 0.9-MeV electron induced vacancies provide sites for the precipitation of lithium. Moreover, the lithium vacancy precipitate behaves like a solute in equilibrium with ions and ionized vacancies. The analysis of the lithium vacancy precipitate in this manner is analogous to the analysis of slightly soluble salts in water. The lithium diffusion coefficient for silicon exposed to fast neutrons, NN = 1.1 to 2.7 × 1014 n/cm2, can be expressed The range of (T) in the above expression is from 300 to 410°K. In addition, the lithium diffusion coefficient for silicon exposed to 0.9-MeV electrons, NE = 5 × 1015 to 3.3 × 1016 electrons/cm2 can be represented by The range of (T) in the above expression is from 300 to 330°K. Relative radiation damage between neutron and electrons was found to be in reasonable agreement with predictions based on radiation damage theory.
