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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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Jul 2024
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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.”
William Christopher Allen, Man-Sung Yim
Nuclear Technology | Volume 168 | Number 3 | December 2009 | Pages 949-956
Miscellaneous | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radioactive Waste Management and Disposal | doi.org/10.13182/NT09-A9332
Articles are hosted by Taylor and Francis Online.
Current fuel assembly designs can achieve burnups that exceed the design burnups for many shipping casks. A proposed solution for this situation is regionalized loading, which involves administratively separating the fuel basket of a shipping cask into two or more regions and loading fuel with different burnup, cooling times, and enrichments into each region. The analysis evaluated how regionalized loading affected spent-fuel shipments.Fuel having a range of burnups and a shipping cask were used in the analysis. The SCALE5 control module SAS2 was used to develop the radiological source terms, and MCNP5 was used to calculate the dose rates associated with the different loading patterns. The analysis indicated that the use of dual-zone loading patterns violated the principles of as-low-as-reasonably-achievable radiation levels. However, the analysis also showed that dual-zone loading patterns reduced the dose rates associated with shipping high-burnup fuel and reduced the time required to ship the fuel. Further analyses were performed to see if a compromise existed.