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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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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February 2025
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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?
F. S. Gunnerson, D. T. Sparks, D. K. Kerwin
Nuclear Technology | Volume 52 | Number 1 | January 1981 | Pages 86-99
Technical Paper | Fuel | doi.org/10.13182/NT81-A32692
Articles are hosted by Taylor and Francis Online.
An in-pile power-cooling-mismatch (PCM) test designed to investigate the behavior of a nine-rod PWR-type fuel bundle under intermittent and sustained periods of high temperature film boiling operation was recently conducted. Emphasis was placed on departure from nucleate boiling (DNB) and return to nucleate boiling (RNB), rod-to-rod interactions, and fuel rod failure. Results indicate that power-coolant variations induced DNB and RNB within the nine-rod test bundle in an irregular, nonsymmetric fashion. Direct rod-to-rod DNB, RNB, and fuel rod failure propagation were not observed. However, a single rod-to-rod interaction was suspected, that being RNB of one rod abetting the onset of DNB on an adjacent rod. This interaction was possibly due to hydraulic coupling. The power and inlet coolant conditions at the onset of DNB on the center fuel rod were indistinguishable from previously obtained PCM data for separately shrouded test rods; thus, the single-rod data base may be applicable for assessing the onset of DNB conditions of an interior fuel rod within a small cluster.
