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.”
A Konstantellos, J L Hemmerich, A C Bell, J Mart, J Yorkshades, K Walker, N Skinner, G Jones, F Delvart
Fusion Science and Technology | Volume 21 | Number 2 | March 1992 | Pages 365-370
Safety; Measurement and Accountability; Operation and Maintenance; Application | doi.org/10.13182/FST92-A29772
Articles are hosted by Taylor and Francis Online.
The JET Active Gas Handling System (AGHS) consists of a number of interlinked processing systems for recovery of the radioactive tritium, its purification, separation from the other hydrogen isotopes, storage and recycling to the JET machine. To meet the stringent safety requirements and the multiplicity of monitoring, control and operational tasks, a plant-wide process control system was designed to integrate all tritium related functions. The AGH Control system is based on an industrial Distributed Control System (DCS) by Fischer & Porter which was tailored to the specific sequential/batch, closed loop and coordinating needs of the plant. Approximately 3600 Input Output (I/O) points are interfaced to the front-end consisting of 16 processors linked via a dual Ethernet Highway network and fast (0.1 s) 4-loop controllers. Three identical console processors support 6 screens which can access any point of the plant. The system has data-links to PLC's, analytical instrumentation and the JET CODAS network. It was installed in a dedicated control room in 1990 and is now being tested and commissioned. This paper describes the design of the system, the selection of the DCS hardware and the special emphasis which was put on the preparation of the software requirements and documentation.