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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.
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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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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.
S. H. Chan, H. H. Tseng
Nuclear Science and Engineering | Volume 71 | Number 2 | August 1979 | Pages 215-227
Technical Note | doi.org/10.13182/NSE79-A20415
Articles are hosted by Taylor and Francis Online.
In analyzing radiant energy exchange between fuel and coolant in a reactor, it is necessary to know the reflection, absorption, and emission characteristics of the fuel and its interface with the coolant. Because of the unavailability and great uncertainty of these radiation properties, they are calculated from the electromagnetic theory of optics, and results are presented here. Depending on the contacting medium, six types of surfaces received consideration. They are the interfaces between uranium dioxide and sodium, uranium dioxide and steel, uranium dioxide and a gas, water and a gas, steel and a gas, as well as sodium and a gas. The spectral interface reflectance and the spectral absorptance from one side of the medium to the other side are evaluated for all wavelengths. These spectral properties are further integrated to yield the total hemispherical properties for a black body source over a temperature range from 1200 to 6000 K. Comparisons are made with available experimental data or calculated values, and the agreement is found to be generally good.