ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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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October 2024
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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.
J. A. Fleck, Jr.
Nuclear Science and Engineering | Volume 2 | Number 5 | September 1957 | Pages 694-708
Technical Paper | doi.org/10.13182/NSE57-A25437
Articles are hosted by Taylor and Francis Online.
The linearized hydrodynamic equations governing the expansion of a frictionless compressible coolant from a cylindrical untapered reactor core admit an exact solution. The pressure so obtained depends only on the time required for an acoustic signal to travel from the core boundary to the core center and is quite independent of the amount of fluid external to the reactor. The pressure should behave similarly in the case of moderate tapering of the core. In the case of extreme tapering it is necessary to consider the external fluid as incompressible. In this case it is possible to obtain an approximate solution for the pressure, which does depend on the amount of external fluid.