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
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
H. Geng, S. M. Ghiaasiaan
Nuclear Science and Engineering | Volume 129 | Number 3 | July 1998 | Pages 294-304
Technical Paper | doi.org/10.13182/NSE98-A1983
Articles are hosted by Taylor and Francis Online.
A model for critical flow in capillaries and cracks of an initially subcooled liquid containing a dissolved noncondensable gas is presented. The model is based on the iterative numerical solution of, and the imposition of critical flow conditions on, one-dimensional two-phase flow conservation equations, everywhere assuming homogeneous equilibrium two-phase flow, and equilibrium between liquid and vapor-noncondensable mixture phases with respect to the concentration of the noncondensable.Model predictions are compared with data from two different sources with good agreement, indicating that the assumption of complete equilibrium between the two phases is adequate for estimating the critical flow in microchannels and cracks. The effect of dissolved noncondensables is examined, and it is shown that the desorption of dissolved noncondensables from water can lead to a slight (up to several percent) reduction in the critical flow rate.