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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
NuScale Energy Exploration Center opens at SC State
NuScale Power Corporation’s latest Energy Exploration (E2) Center has opened at South Carolina State University, in Orangeburg. E2 Centers are designed to provide visitors with hands-on experiences in simulated scenarios of operations at nuclear power plants. NuScale has established 10 such centers around the world. The company officially presented the fully installed E2 Center to SC State on May 21, after a collaborative setup and training process was completed.
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.