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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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.”
Gregory J. Van Tuyle
Nuclear Technology | Volume 122 | Number 3 | June 1998 | Pages 330-354
Technical Paper | Accelerators | doi.org/10.13182/NT98-A2874
Articles are hosted by Taylor and Francis Online.
As a result of advances in particle accelerator technology and difficulties in building new nuclear reactors, increasingly ambitious applications of particle accelerator-driven spallation targets have been proposed in recent years. The simplest applications are the spallation neutron sources needed for basic nuclear sciences, with proton beams in the 1- to 5-MW range to be driven into targets of lead, mercury, or tungsten to produce neutron fluxes higher than is practical with nuclear reactors. On a much larger scale, the proposed accelerator production of tritium would use a 170-MW proton beam to generate sufficient neutrons to produce ~3 kg tritium/yr, based on neutron capture in a 3He feedstock. Other proposals include the use of subcritical neutron multiplication, using waste actinides and/or fertile actinides to transmute nuclear wastes or support alternate fuel cycles. The basic technology and technical aspects of the numerous-proposed applications are described. Fundamental relationships regarding machine efficiencies, neutron production, and subcritical multiplication are provided and utilized to cross-compare concepts.