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
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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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August 2024
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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 Jin Lee, Chan Y. Paik, Robert E. Henry, Michael Epstein, Martin G. Plys
Nuclear Technology | Volume 125 | Number 2 | February 1999 | Pages 182-196
Technical Paper | Reactor Safety | doi.org/10.13182/NT99-A2941
Articles are hosted by Taylor and Francis Online.
The Modular Accident Analysis Program Version 4 (MAAP4) is an integrated severe accident analysis code that integrates a large number of phenomena and models into a single plant simulation. MAAP4 was used to predict the containment response to a simulated small-break loss-of-coolant accident steam blowdown followed by the release of a hydrogen/helium gas mixture (test E11.2) in the decommissioned German Heiss Dampf Reaktor facility. The test also incorporated external spray cooling of the steel dome near the end of the transient. In MAAP4, 29 nodes and 44 flow junctions were used to model the highly compartmentalized containment. The MAAP4 prediction of the containment pressure and gas temperature over the duration of the transient and the transient distribution of hydrogen/helium in the containment compartments are compared with experimental results. MAAP4 overpredicts the pressure and correctly predicts the thermal and hydrogen stratification that was observed in the E11.2 test.