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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
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
NRC restores expiration dates for renewed Turkey Point licenses
The Nuclear Regulatory Commission announced this week that it has restored the expiration dates of the Turkey Point nuclear power plant's units 3 and 4 subsequent license renewals (SLR) to July 19, 2052, and April 10, 2053, respectively.
E. F. Kryuchkov, V. A. Apse, V. A.Yufereva, V. B. Glebov, A. N. Shmelev
Nuclear Science and Engineering | Volume 162 | Number 2 | June 2009 | Pages 208-213
Technical Note | doi.org/10.13182/NSE162-208
Articles are hosted by Taylor and Francis Online.
In the opinion of some experts in problems of nuclear nonproliferation, the threat that subnational terrorist groups may become owners of gas centrifuges is real. If enrichment of feeding uranium increases from 0.7 to 20%, then the scope of separative works and amount of the feeding uranium needed for uranium enrichment up to the weapons-grade level decreases by many times. In this connection it can be expected that a potential nuclear proliferator will use gas centrifuges for illegal reenrichment of 20% uranium, taken from export deliveries for research reactors or from any other sources, up to weapons-grade quality and then manufacture a crude nuclear explosive device. These reasons indicate that besides reduction of uranium enrichment to 20% 235U, other measures may also be required to upgrade self-protection of 20% uranium against its unauthorized reenrichment.Denaturing of 20% uranium due to the admixture of small 232U amounts (~0.1%) creates an effective barrier against its renrichment up to the weapons-grade level because in the reenriching process the following occurs: (a) the content of 232U increases; (b) the internal source of alpha radiation intensifies; (c) UF6 molecules are destroyed by alpha particles from decays of 232U with generation of low-volatile uranium fluorides and free fluorine; and (d) the neutron emission rate intensifies too, and this results in a cardinal reduction of energy yield from the chain fission reaction (CFR) by three orders of magnitude. So, uranium denatured with 232U becomes quite unattractive for potential nuclear proliferators.The authors are continuing the studies on the effects induced by the 232U admixture on the radiation resistance of UF6 and on the energy yield of CFR in reenriched uranium.