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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Magdi Ragheb, Otto Lazareth
Fusion Science and Technology | Volume 6 | Number 2 | September 1984 | Pages 195-224
Technical Paper | Blanket Engineering | doi.org/10.13182/FST84-A23153
Articles are hosted by Taylor and Francis Online.
Student's t-distribution is used for the direct estimation of the modeling and geometrical perturbations in the Monte Carlo simulation of fusion blankets. A test of hypothesis is carried out for the equivalence of the means for the reference and perturbed systems at different confidence levels. If the test is failed, intervals for the difference of means or perturbation can be directly deduced. No variance reduction is attempted in the application of this methodology. Application of the methodology to the neutronic and photonic analysis of the conceptual HYFIRE high-temperature process heat fusion reactor blanket is carried out. The use of a two-dimensional model for the analysis versus one-dimensional models leads to differences in the estimated system parameters (e.g., breeding ratio) ranging from 1.5 to 7% at the 70% confidence level. Accounting for the penetrations, using three- versus two-dimensional models, affects those system parameters in the range of 12.8 to 20.9% at the same confidence level. These uncertainties are judged significantly large and need to be accounted for in future reactor designs.