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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.
A. Y. K. Chen, T. Yoshida, T. Tanabe
Nuclear Science and Engineering | Volume 150 | Number 3 | July 2005 | Pages 349-356
Technical Paper | doi.org/10.13182/NSE05-A2521
Articles are hosted by Taylor and Francis Online.
The authors have proposed a technique using special metal structures to efficiently convert gamma rays to low-energy electrons, with possible applications such as detoxification of water and hydrogen production using gamma rays from radioactive waste. The present study employed the Monte Carlo N-Particle (MCNP) transport code to understand in detail the mechanisms of low-energy photon and electron generation from gamma rays in water vessels containing various metal structures. The study demonstrated that the amount of low-energy electrons in water generally increases with (a) the Z number of the metal, (b) the volume of the metal, (c) the ability of low-energy electrons to escape from the metal and into the water region, (d) the closeness with adjacent metal plates, and (e) the ability of metal plates to reflect high-energy primary photons to delay their exit from the vessel. Based on these basic understandings, more sophisticated structures were designed and compared in computer simulations. The simulation results indicated that closed-type structures, such as a honeycomb tube, can provide better performance in terms of efficiently generating low-energy electrons in water.