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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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!
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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.
Alan V. Jones
Nuclear Science and Engineering | Volume 105 | Number 2 | June 1990 | Pages 105-122
Technical Paper | doi.org/10.13182/NSE90-A23741
Articles are hosted by Taylor and Francis Online.
One of the more severe scenarios for a single subassembly accident in a liquid-metal fast breeder reactor is the formation of a bottled-up pool of fuel and steel in the assembly and its subsequent lateral discharge into a neighbor through a breach in the can wall. Most of the calculations and experiments to investigate this scenario have assumed that the discharge is single phase. Recent experimental evidence from SCARABEE suggests that the discharge is more likely to be two phase. A series of SIMMER calculations has been performed to examine the major features of a two-phase fuel discharge into a rod bundle. Flashing is found to reduce the mass flux of the discharge; the vapor so generated then accelerates the liquid in the discharge, resulting in higher melt velocities and generally deeper penetration of the discharge into the bundle before plugging occurs as compared with the singlephase case.