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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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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.”
Takashi Kato, Kunihiro Matsui, Susumu Shimamoto, Kazuhiko Nishida, Tadaaki Honda, Kazuya Hamada, Hiroshi Tsuji, Neil Michel, Kiyoshi Yoshida
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 1253-1257
Fusion Magnet Systems | doi.org/10.13182/FST96-A11963120
Articles are hosted by Taylor and Francis Online.
One of the safety analysis for superconducting magnet system in International Thermonuclear Experimental Reactor (ITER) was carried out. The ITER cryostat will hold many superconducting magnets, such as twenty of toroidal field coils, a central solenoid coil, and seven poloidal coils. Loss of vacuum of the cryostat was considered as the worst assumption and the safety analysis of the magnets was examined when the assumption would be occurred. Accordingly, the loss of vacuum will cause the loss of thermal shield vacuum for the magnets and then a large heat transfer will be generated in the cryostat The magnet pressure and temperature will rise, bringing the magnets to quench. Such behavior was simulated by using a developed computer-aided calculation code. As a result of the calculation, a catastrophic phenomenon doesn't appear in the assumption. It is observed that a quasi-stable state, where the magnet temperature is kept to be less than 7 K, is maintained for more than 600 seconds. Thus, the magnet current can be slowly discharged like as the ordinal operation without magnet quench even in such worst assumption due to a large volume of the cryostat.