ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
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.”
Nathan Lau, Hao Wang (Virginia Tech), Shawn St. Germain, Andrea S. Harvey (INL), Matthew B. Weinger, Shilo Anders (Vanderbilt Univ Medical Center)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 664-673
Nuclear power plant (NPP) outage represents a major operational cost that must be minimized to sustain competitiveness in the US energy market. However, outage management can be challenging because myriad of interdependent activities may need adjustment over the course of the outage. We conducted a site vist to the Advanced Test Reactor at the Idaho National Laboratory and a literature review to identify general directions for innovations in interactive visualization for outage management. First, new approaches are needed to represent task and scheduling uncertainty to better support estimates of effort and cost overruns as tasks change during outages. This would allow staff to project the likelihood of overruns and reallocate resources as appropriate. Second, outage support software should facilitate visualization of resource constraints whether hard (e.g., regulatory requirements) or ‘soft’ (i.e., those with cost, morale, or other consequences). When responding to emergent issues or unplanned work, the outage staff must be aware of all potential alternatives (e.g., overtime, additional staff, deferrable tasks) and the short- and longer-term implications of each choice. Third, there is currently limited understanding of how best to support outage staff’s ability to simulate the impact of potential schedule adjustments in response to new or reallocated work. Graphical “what if” scenario depictions should be an important component of future visualization capabilities. To realize the potential of AOCC, interactive visualization for outage management must better support situation awareness, decision-making and planning.