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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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 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.”
Tim D. Bohm, Laila El-Guebaly, ARIES Team
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 278-282
In-Vessel Components - FW, Blanket, Shield & VV | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1) | doi.org/10.13182/FST11-A12365
Articles are hosted by Taylor and Francis Online.
In ARIES tokamak designs, there are assembly gaps between adjacent blanket and shield modules. These gaps allow increased levels of radiation to reach outer components. Three-dimensional models of the tokamak were used to analyze the effect of radiation streaming through both straight and stepped gaps of 1 cm and 2 cm wide. We proposed a novel idea of inserting a WC shield block within the double step region to further attenuate the streaming neutrons. Radiation damage parameters were calculated for the inboard components including the first wall, shield, manifolds, vacuum vessel, and magnet. Our results show that straight gaps allow too much radiation to reach the inboard components, resulting in large peaking in radiation damage parameters. The double stepped gap with WC shield block show reduced peaking and are effective at protecting the vacuum vessel and magnet.