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Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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.
Shi-Chien Lin, Michiko Hamasaki, Yii-Der Chuang
Nuclear Science and Engineering | Volume 71 | Number 3 | September 1979 | Pages 251-266
Technical Paper | doi.org/10.13182/NSE79-A19062
Articles are hosted by Taylor and Francis Online.
This study is basic research on some mechanical properties of Zircaloy-4 and Zircaloy-2 addressed particularly to the influence of hydrogen attack and of the hydride-orientation and -shape effect. At room temperature, Zircaloy-4 has almost the same tensile properties as does Zircaloy-2, both before and after hydriding. Zircaloy-4 may serve well if its hydrogen content is lower than 300 ppm, although hydrogen embrittlement can be alleviated by elevated temperature. If we performed a spheroidization treatment on the platelet hydrogen in the matrix, it may serve satisfactorily when the hydrogen content is 650 ppm or more. Tensile tests of annealed Zircaloy-2 specimens, of hydrided specimens, and of spheroidized specimens containing two different hydrogen concentrations were carried out at temperatures up to 700°C The strain-rate effect on the mechanical properties was also studied for Zircaloy-2 specimens. The results show that a spheroidization treatment of the hydrided Zircaloy-2 can improve its mechanical properties—i.e., its ductility, toughness, and strength—as well as its hardenability.