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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!
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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.”
Sung Kon Kang, Kyung Min Kim, Ki Hwan Kim, Yeon Sub Jung (KHNP)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 158-165
We had first developed APR1400 simulator with the form of emulation to perform HFE V&V of the MMIS in the construction phase of Saewool 1&2 nuclear power plant. And then APR1400 simulator was developed gradually reflecting design change and transformed into the APR1400 training simulator, and finally contributed to the acquisition of the operating license. But if MMIS related problem or MMIS design change happens in the digitalized MMIS in the plant operation phase, we need to perform MMIS V&V including control logic and MMI function through the most similar testbed. But plant MMIS cannot be fully tested with the limited condition of the emulated simulator. We have come up with new method to perform operator training and MMIS V&V simultaneously. Accordingly, we adopted virtual Distributed Control System (DCS) to implement plant MMIS in the APR1400 training simulator. This virtual DCS has the same control logic and MMI function as plant is provided. Three types for simulator operation will be provided. First mode is hybrid mode which is implemented with the form of emulated MMI and real plant control logic implemented with virtual DCS for operators’ training as well as control logic V&V. Second mode is emulation mode which is implemented with the form of emulated MMI and control logic. Final mode is stimulation mode which is fully implemented with the form of real plant MMIS including control logic and MMI function. This approach provides opportunity that complex control logic such as NSSS Process Control System can be validated before real control logics are applied in plant MMIS and improves coping capability of operator due to operator’s training in the same environment as plant. Application of this method can reduce plant transient state and unexpected plant event through the resolution of MMIS fault in advance.