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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 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 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. 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.”
H. Chikaraishi, T. Inoue, T. Takami, K. Aoyama, T. Haga, LHD Experiment Group
Fusion Science and Technology | Volume 58 | Number 1 | July-August 2010 | Pages 586-592
Chapter 12. Superconducting Magnet System | Special Issue on Large Helical Device (LHD) | doi.org/10.13182/FST10-A10846
Articles are hosted by Taylor and Francis Online.
The Large Helical Device (LHD) has six superconducting coil pairs that form a magnetic field, and plasma experiments of LHD require high accuracy and stability to control the coil current, which must be controlled in a wide range to change the magnetic field. This paper introduces the power system for the LHD superconducting magnets and the enhancement of the power supplies.When designing the power supplies, it is difficult to satisfy the requirements for the current control with a simple controller installed in each power supply because of the tight magnetic coupling between the superconducting coils. In addition, synchronized operation of these power supplies is important for LHD operation. To satisfy the current control requirements and to synchronize operation of the power supplies, six dc power supplies controlled by a computer system were constructed and are operating. The fundamental operation of the LHD is performed under the dc magnetic field, and a power system suitable for steady-state operation was designed and constructed. With the progress in fusion plasma research, more dynamic experiments are planned, and they require dynamic control of the magnetic field. For this purpose, the output voltages of power supplies were enhanced using additional pulse power supplies.