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Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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.”
Yousry Gohar, Shi-Tien Yang
Fusion Science and Technology | Volume 8 | Number 2 | September 1985 | Pages 2010-2020
Technical Paper | Blanket Comparison and Selection Study | doi.org/10.13182/FST85-A24576
Articles are hosted by Taylor and Francis Online.
The Blanket Comparison and Selection Study (BCSS) carried out 16 blanket concepts [7 tokamaks and 9 tandem mirror reactors (TMRs)] for the final evaluation process. This process requires all the blanket design parameters, including the energy multiplication factors, the atomic displacement rate in the first wall, and the shielding definition for the reactor. A shielding assessment is performed to determine shielding materials, compositions, arrangements, and thicknesses for each concept. Two shielding criteria are adopted for this assessment: (a) workers are permitted in the reactor hall 1 day after shutdown, and (b) superconductor coils are required to function for a 150 MW·yr/m2 deuterium-tritium neutron exposure at the first wall without a change in their performances. For the design purpose, the occupational exposure is 0.5 mrem/h, based on working 8 h/day and 40 h/week. This dose level is used to concur with current practice in the nuclear industry and the exposure policy of the U.S. Department of Energy, which limits the on-site personnel exposure level to less than one-fifth of the maximum permissible dose equivalent limits. The personnel exposure criterion is used to size the outboard bulk shield for tokamak reactors and the shield thickness between the central cell coils for TMRs. In the fusion power environment the insulator materials are the most sensitive components in the superconductor coils from the radiation damage point of view. A maximum insulator dose of 1010 rad in the thermal insulator is used to size the bulk shield in the inboard section of the tokamak reactors and the central cell sections under the coils for TMRs. As a result of this criterion, all other nuclear responses do not exceed any design limit for the superconductor materials or the copper stabilizer. Also, the nuclear heating in the winding materials is ∼0.1 mW/cm3, which is very close to the optimum design conditions for TMRs and quite satisfactory for the design of the toroidal field coils in tokamak reactors. An analysis for the energy multiplication factors, the energy loss to the shield, the atomic displacement rate in the first wall, and the shield definition for the 16 blanket concepts of the BCSS is provided.