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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Dirk Wilhelm
Nuclear Technology | Volume 39 | Number 1 | June 1978 | Pages 30-40
Nuclear Safety Analysis | Energy Modeling and Forecasting / Reactor | doi.org/10.13182/NT78-A17005
Articles are hosted by Taylor and Francis Online.
To calculate the depressurization and flow-coast-down accidents in a 1000-MW gas-cooled fast reactor (GCFR) with a secondary steam cycle, the PHAETON2 computer code is used, the emphasis being placed on the solution of one-dimensional unstationary helium flows. The fluid dynamics equations are solved one by one by a combination of implicit and explicit methods, taking into account most of the terms of the original equations. In the case of the accidents considered, the shutdown system is always activated, and inherent actions only of the GCFR are allowed. The results show a necessity of backup pressures above 150 kPa for the depressurization accidents and a minimum circulator frequency of 5 Hz for the flow-coastdown accidents.