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
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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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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.
W. C. Yee, W. Davis, Jr.
Nuclear Science and Engineering | Volume 24 | Number 1 | January 1966 | Pages 1-5
Technical Paper | doi.org/10.13182/NSE66-A18118
Articles are hosted by Taylor and Francis Online.
Prolonged exposure of the hydrogen form of a cation-exchange resin—a sulfonated copolymer of polystyrene crosslinked with divinylbenzene—to gamma radiation and flowing water caused more drastic changes in the chemical and physical properties of the material than has been reported by other investigators for resin exposed to like dosage in a static system. After a dose of 0.75 × 109 rads in a dynamic system, the rate of loss of strong-acid capacity was 20 to 25%/(W-h g) of dry resin, compared with the 4% and the 10 to 20% found by others for the static system. Also, de-crosslinking of more than 4% of the resin matrix accompanied this loss of capacity, compared with the more moderate de-crosslinking or even additional crosslinking reported for the static system. Gamma radiation also caused gas evolution, bead swelling, and produced a weak-acid capacity in the resin equivalent to 3 to 5% of the original strong-acid capacity. Decomposition products included soluble sulfuric, sulfonic, and oxalic acids and insoluble bits of resin. The average rate of loss of sulfur during exposure was estimated to represent 1.0 to 1.2 atoms lost per 100 eV of energy absorbed.