ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
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.”
H. Takenaga, H. Kubo, Y. Kamada, Y. Miura, Y. Kishimoto, T. Ozeki
Fusion Science and Technology | Volume 50 | Number 4 | November 2006 | Pages 503-507
Technical Paper | doi.org/10.13182/FST06-A1273
Articles are hosted by Taylor and Francis Online.
Accumulation of impurity injected for reduction of heat load to the divertor plates was of great concern with a peaked density profile. Applicability of impurity injection to a burning plasma with a peaked density profile was investigated for various impurity accumulation levels using the A-SSTR2 design parameters. Impurity transport analysis indicated that the argon density profile twice as peaked as the electron density profile can yield acceptable radiation profile even with a peaked density profile. The required confinement improvement factor over the IPB98(y,2) scaling slightly increased from 1.4 with the flat density profile to 1.5 with the peaked electron density profile at ne(r/a = 0)/ne(r/a = 0.7) ~ 3. When the argon density profile was determined by neoclassical transport, the radiation loss in the core plasma intensively increased with the peaked density profile, which requires higher confinement enhancement factor of 1.9 at ne(r/a = 0)/ne(r/a = 0.7) ~ 3.