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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Russell D. Mosteller, Peter J. Jensen, Michael J. Anderson,+ Laurance D. Eisenhart, Rana Abdollahian, Jason Chao, Walter J. Eich
Nuclear Technology | Volume 86 | Number 1 | July 1989 | Pages 40-48
Technical Paper | Nuclear Safety | doi.org/10.13182/NT89-A34280
Articles are hosted by Taylor and Francis Online.
A pressurized water reactor (PWR) with a positive moderator temperature coefficient of reactivity is potentially susceptible to a severe overheating transient. This study identifies a scenario in which such a transient could occur and is similar in some respects to the accident at Chernobyl Unit 4. The scenario so identified is a natural circulation test at beginning of life under the assumption that all scrams are disabled. The results obtained demonstrate that a runaway power excursion does not occur and that the domestically designed PWR that was analyzed displays inherently safe behavior for the chosen scenario. The analysis is performed using two codes in tandem over three sequential stages of the analysis. Since the transient is assumed to be quasi-steady-state, steadystate calculations first are performed with the advanced three-dimensional core simulation code ARROTTA to generate a moderator reactivity table for input to the point kinetics model in the RETRAN-02 systems transient code. The entries in this table are taken directly from ARROTTA results, so they implicitly contain three-dimensional reactivity effects. Next, a RETRAN-02 transient analysis is performed for the system as a whole. This analysis serves two purposes: It predicts the overall behavior of the plant during the transient, and it also produces time-dependent forcing functions for ARROTTA. Finally, ARROTTA is run in a transient mode, providing a detailed description of the behavior of the core during the transient. The high level of consistency produced by the two transient calculations validates the initial assumption of quasisteady-state behavior. A methodology that may be applied to the analysis of this and similar transients is developed and tested as part of this study.