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Division Spotlight
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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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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.”
Z. W. Lin
Nuclear Technology | Volume 168 | Number 1 | October 2009 | Pages 128-131
Dose/Dose Rate | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 1) / Radiation Protection | doi.org/10.13182/NT09-A9112
Articles are hosted by Taylor and Francis Online.
In space radiation calculations it is often useful to calculate the dose or dose equivalent in blood-forming organs (BFOs), the eye, or the skin. Sometimes, an equivalent sphere is used to represent the organ for a fast estimate of the organ dose. It has been found that the equivalent sphere model (ESM) can approximate organ dose or dose equivalent values in galactic cosmic-ray environments. In solar particle event (SPE) environments, the model works marginally for BFOs, but it does not work for the eye or the skin. Here, we study the improvement of the ESM. Motivated by the two-component thickness distributions of the eye and the skin, we use two spheres with proper weights to represent the eye or the skin, and this drastically improves the accuracy. For example, in SPE environments, the average error for the skin dose equivalent using two spheres to represent the skin is [approximately]8%, while the average error using a single sphere is [approximately]100%.