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The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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 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. 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.”
J. L. Duchateau, J. Y. Journeaux, B. Gravil
Fusion Science and Technology | Volume 56 | Number 3 | October 2009 | Pages 1092-1123
Technical Papers | Tore Supra Special Issue | doi.org/10.13182/FST09-A9170
Articles are hosted by Taylor and Francis Online.
We review the main design choices for the toroidal field system and associated cryogenic system for Tore Supra, which introduced the use of 1.8K superfluid helium as coolant for a large NbTi magnet system. The main steps of the system commissioning are presented, with a description of the main difficulties encountered, showing the evolution of the monitoring and of the safety system to take into account the lessons drawn from the first operating experience.The impact of plasma operations such as plasma initiation, long plasma discharges, and disruption is given in detail, highlighting their impact on cryogenics, which remains in all cases weak. The fast safety discharges (FSDs) of the system can disturb normal operation. Origin of and statistics about FSDs are discussed, detailing efforts to decrease their number.Finally, maintenance and monitoring of the cryogenic system and of the various sensors are presented with some consideration regarding the aging of the system and its overall availability. Details are given regarding minor failures on components all along the operation. Overall, the accumulated experience is certainly a useful tool to prepare the manufacture and operation of the ITER superconducting magnets despite the differences in design and size.