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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
R. C. Anderson, C. A. Erdman, A. B. Reynolds
Nuclear Science and Engineering | Volume 88 | Number 4 | December 1984 | Pages 495-512
Technical Paper | doi.org/10.13182/NSE84-A18368
Articles are hosted by Taylor and Francis Online.
Droplet size distributions from the bulk flashing of 50°C superheated water were measured experimentally. The distributions were lognormal, with a geometric mean droplet diameter Dg of 124 µm and a geometric standard deviation σg of 1.30. Measured droplet size distributions at 40 and 30°C superheat were also lognormal, but the values for Dg and σg were not sufficiently reproducible to compare to the 50°C superheat results. Flashing occurred from a 16.4-ml chamber through a 19-mm-diam opening. The door opening time was 1.6 ms. Measurements were made by collecting droplets containing blue dye on paper mounted on a rotating bicycle wheel. Spot sizes were correlated with droplet sizes using neutron activation analysis by adding samarium nitrate to the water and activating the samarium. Measurements of pressure, temperature, and expansion velocity during the flashing process were made and compared with calculated values with moderately good agreement. Exploratory calculations of maximum droplet diameters based on the critical Weber number (aerodynamic fragmentation) were made with results within a factor of 2 or 3 of the measured values.