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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.”
Austin Fleming, Ahmad Al-Rashdan, Colby Jensen, Pattrick Calderoni (INL)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1150-1153
Fuel-cladding interaction for pressurized water reactors is of interest to the nuclear energy community because of its impact on fuel safety and performance. The complex behavior of fuel-cladding mechanical interaction can result in diameter changes of the cladding. These can be due to internal pressure changes due to fission gas release or fuel pressing directly on the cladding due to fuel swelling. Regardless of the cause of diameter changes, an accurate diameter measurement of the cladding can provide detailed information about the conditions of the fuel and cladding. Other efforts have been made to perform cladding diameter measurements, but contact method have been used with limited applicability to many tests [1]. Electrical impedance based instrumentation is class of measurements that is based on “interrogating” a sensor by providing a current and measuring the voltage (or vise versa) across a system. The parameter of interest is determined by relating it to the measured impedance (calculated from the current and voltage) through the use of an analytic, empirical, or numerical model. These systems are used for a wide variety of measurands in the nuclear industry. They are attractive for in-pile applications because of the potential to be robust to irradiation.