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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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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.”
M. A. Abdou, P. J. Gierszewski, M. S. Tillack, K. Taghavi, K. Kleefeldt, G. Bell, H. Madarame, Y. Oyama, D. H. Berwald, J. K. Garner, R. Whitley, J. Straalsund, R. Burke, J. Grover, E. Opperman, R. Puigh, J. W. Davis, G. D. Morgan, G. Deis, M. C. Billone, K. I. Thomassen, D. L. Jassby
Fusion Science and Technology | Volume 8 | Number 3 | November 1985 | Pages 2595-2645
Overview | Blanket Engineering | doi.org/10.13182/FST85-A24685
Articles are hosted by Taylor and Francis Online.
The operating environment to be experienced by the nuclear components of a fusion reactor is unique and leads to a number of new phenomena and effects. New experimental knowledge is necessary to resolve many of fusion's remaining issues. Investigation of the required experiments reveals the importance of simulating multiple interactions among physical elements of components and combined effects of a number of operating environmental conditions. Some experiments require neutrons not only as a source of radiation damage effects but as a practical economical means for bulk heating and producing specific nuclear reactions. The evaluation of required facilities suggests important conclusions. Present fission reactors and accelerator-based neutron sources are useful and their use should be maximized worldwide, but they have serious limitations. Obtaining adequate data for fusion nuclear technology over the next 15 years requires a number of new nonneutron test facilities in addition to the use of fission reactors. Experiments in the fusion environment will then be required for integrated tests and concept verification. The key nuclear needs for a fusion facility are 20 MW of deuterium-tritium fusion neutron power over 10 m2 of experimental surface area with long (<1000 s) plasma burn and 2 to 10 MW · yr/m2 fluence capability. Fusion test devices with fusion power >100 MW are shown to be undesirable because of high cost and high risk. The analysis favors fusion devices that are able to operate at low total power and high power density. For fusion devices with large minimum power, e.g., conventional tokamaks, results indicate strong incentives for two separate test devices: one for plasma physics experiments and the other for fusion engineering research experiments.