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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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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?
Dirk Wilhelm
Nuclear Technology | Volume 39 | Number 1 | June 1978 | Pages 30-40
Nuclear Safety Analysis | Energy Modeling and Forecasting / Reactor | doi.org/10.13182/NT78-A17005
Articles are hosted by Taylor and Francis Online.
To calculate the depressurization and flow-coast-down accidents in a 1000-MW gas-cooled fast reactor (GCFR) with a secondary steam cycle, the PHAETON2 computer code is used, the emphasis being placed on the solution of one-dimensional unstationary helium flows. The fluid dynamics equations are solved one by one by a combination of implicit and explicit methods, taking into account most of the terms of the original equations. In the case of the accidents considered, the shutdown system is always activated, and inherent actions only of the GCFR are allowed. The results show a necessity of backup pressures above 150 kPa for the depressurization accidents and a minimum circulator frequency of 5 Hz for the flow-coastdown accidents.
