ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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.”
Guirec Audousse, Anne-Sophie Hintzy, Rushil Seewoonarain (EdF)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1581-1590
The purpose of the paper is to describe the ongoing work on methods and tools, reinforcing engineering confidence in several phases of the I&C systems design, including the verification of design implementation with regard to the upper level requirements, and the generation of tests. The first part of the paper will deal with a methodology to identify and formalize high-level requirements in the most generic way. The first steps of the methodology is based on a specification document analysis; it consists in identifying the studied system, its external systems, its main components, its operation modes and its requirements. These requirements are then formalized, before being modelled, simulated and analysed independently. Then, the requirements are simulated and analysed all together. Finally, the high-level requirements shall be coupled with lower-level requirements or production diagrams. The second part will describe the case used to implement the methodology, as well as the modeling tools. The use-case is the I&C part of electrical switchgears, which are pieces of equipment in conventional technology which interface I&C systems and actuators. STIMULUS (developed by ArgoSim) has been used for the high-level requirements and ControlBuild (developed by Dassault System) for the production diagrams. As a conclusion, the paper will describe what benefits the tool-base method provides to I&C Verification and Validation activities.