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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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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Fusion Science and Technology
November 2025
Latest News
What’s the most difficult question you’ve been asked as a maintenance instructor?
Blye Widmar
"Where are the prints?!"
This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.
“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.
Sergey Ananyev, Boris Kuteev
Fusion Science and Technology | Volume 81 | Number 8 | November 2025 | Pages 869-884
Research Article | doi.org/10.1080/15361055.2025.2502287
Articles are hosted by Taylor and Francis Online.
Over a period of time from 2012 to 2023, a special program (computer code), which currently has no analogues in the Russian Federation, was created and modified. The FC-FNS code was developed for simulating fuel nuclide fluxes and their inventories in fuel cycle systems, with allowance for the fuel cycle architecture and candidate technology solutions, including the system for the injection of neutral beams of different isotopic compositions. The results of using the code for determining the parameters of fuel injection and for pumping and processing tritium-containing gas mixture are presented for various plasma parameters in fusion facilities with blankets.
Despite using a fairly simple interface and the Microsoft Excel environment instead of the special programming language, the code allows for simulating the coordinated operation of many fuel cycle systems, including the tokamak vacuum vessel with plasma. The distinctive feature of the model is not the precise modeling the entire system (including plasma), but the modeling of the joint operation of a large number of interconnected elements in which physical and chemical processes occur, which differ by several orders of magnitude both in duration and the amount of substance involved.
