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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Nuclear Science and Engineering
February 2025
Nuclear Technology
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Latest News
Reboot: Nuclear needs a success . . . anywhere
The media have gleefully resurrected the language of a past nuclear renaissance. Beyond the hype and PR, many people in the nuclear community are taking a more measured view of conditions that could lead to new construction: data center demand, the proliferation of new reactor designs and start-ups, and the sudden ascendance of nuclear energy as the power source everyone wants—or wants to talk about.
Once built, large nuclear reactors can provide clean power for at least 80 years—outlasting 10 to 20 presidential administrations. Smaller reactors can provide heat and power outputs tailored to an end user’s needs. With all the new attention, are we any closer to getting past persistent supply chain and workforce issues and building these new plants? And what will the election of Donald Trump to a second term as president mean for nuclear?
As usual, there are more questions than answers, and most come down to money. Several developers are engaging with the Nuclear Regulatory Commission or have already applied for a license, certification, or permit. But designs without paying customers won’t get built. So where are the customers, and what will it take for them to commit?
Florence L. Harrison
Nuclear Technology | Volume 11 | Number 3 | July 1971 | Pages 444-458
Technical Paper | Nuclear Explosion Engineering / Nuclear Explosive | doi.org/10.13182/NT71-A30877
Articles are hosted by Taylor and Francis Online.
Properties of nuclear debris that affect its distribution and concentration in water systems and the biological availability of radionuclides to edible aquatic organisms were assessed for debris from nuclear cratering events. From particle size distribution, it was calculated that longdistance transport of debris can occur in dynamic water systems. Leachability of debris was found to vary with the radionuclide and with the composition of the leaching solution, and to depend on particle size and distribution of activity in the particle. Biological availability was studied in aquaria or large pool systems where radionuclide concentrations were followed in water, suspended material, and aquatic organisms. Bivalve molluscs and crustaceans usually had higher radionuclide concentrations than fish. The availability of some radionuclides was less than that observed in experiments with pure, commercially obtained radionuclides and may be due to differences in physical and chemical form. Estimates of the whole-body dose to man from consumption of the aquatic organisms indicate that 131I, 140Ba/140La, 110mAg, and 181W are potential major contributors.
