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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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Nuclear Science and Engineering
August 2024
Nuclear Technology
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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.”
Arnaud Duthou, Clara Pinhas, Aurélien MatteI, Yann Challamel (Rolls-Royce)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1463-1471
Most of the nuclear power plants in the world have been in service for more than 30 years and are likely to pursue a life extension to 60 or even 80 years. The modernization of their equipment, in particular I&C systems, must be achieved in order to preserve and enhance their safety, obtain their operating license according to applicable standards, but also improve their productivity. The modernization or deployment of new I&C systems, in particular for safety classified I&C can be very complex and risky. Therefore many aspects should be considered while building the scope of the modernization, in particular the qualification and licensing, the schedule constraints, the cohabitation between the new systems and the older systems (notably when the new equipment is based on digital technology while the rest is analog) but also organizational requirements. This paper gives an overview of a successful modernization of major parts of the I&C of 2 VVER plants in Loviisa (Finland) including the context, regulatory requirements, stakes, objectives and progress as well as of the technology and technical solutions deployed. It will explain the different phases to consider while conducting such modernization project: - Define the optimum scope to modernize - Consider the site constraints - Monitor project with clear schedule and milestones - Work closely with local safety authorities - Propose the appropriate technologies fitting plants requirements and systems in place From this successful project we will extract the key factors of a successful modernization and how they can be adapted and deployed to other utilities in the world.