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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.
Shee-Ming Chen, Leon J. Lidofsky
Nuclear Science and Engineering | Volume 29 | Number 2 | August 1967 | Pages 198-209
Technical Paper | doi.org/10.13182/NSE67-A18528
Articles are hosted by Taylor and Francis Online.
From pulsed-neutron measurements, the most probable slowing down times of 14.1-MeV neutrons to 1.1 and 0.8 eV in water are found to be 1.55 ± 0.15 and 1.85 ± 0.15 µsec, using cadmium-shielded 6LiI scintillators at distances 10 to 50 cm from the source. No spatial dependence can be found. Subsequent Monte Carlo study of 120 000 neutron cases not only confirms the experimental results, but also yields a more detailed space-energy-time neutron distribution as well as average slowing down times to various epithermal energies.
