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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
August 2024
Nuclear Technology
Fusion Science and Technology
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.”
T. Honda, T. Uda, K. Maki, T. Okazaki, Y. Seki, I. Aoki
Fusion Science and Technology | Volume 25 | Number 4 | July 1994 | Pages 451-468
Technical Paper | Safety/Environmental Aspect | doi.org/10.13182/FST94-A30252
Articles are hosted by Taylor and Francis Online.
A comprehensive safety analysis code system has been proposed for the quantitative investigation of the safety of nuclear fusion reactors such as the International Thermonuclear Experimental Reactor (ITER). As a first step, the plasma dynamics and the thermal characteristics of the core internal structures have been developed by a one-point model and a time-dependent one-dimensional heat transfer model, respectively. The thermal behavior of ITER during overpower events caused by thermal instability of the plasma has been analyzed. In a truly ignited operation (Q ∼ ∞), the plasma reaches the beta limit in ∼6.5 (3.5) s after insertion of a + 10% fluctuation in fuel density, when the ITER89-L power law (the offset-linear law) is applied. The surface temperature of the divert or tiles rises to ∼1900°C, which may result in damage from erosion and thermal stress. On the other hand, the outboard and inboard structures maintain their integrity during overpower events if the cooling systems function normally. The code system will be integrated step by step to provide overall safety analyses for nuclear fusion reactors.