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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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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Prepare for the 2025 PE Exam with ANS guides
The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall. Now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
Yigal Ronen, Yaakov Fahima
Nuclear Technology | Volume 67 | Number 1 | October 1984 | Pages 46-55
Technical Paper | Fission Reactor | doi.org/10.13182/NT84-A33528
Articles are hosted by Taylor and Francis Online.
Two methods for spectral shift control have been proposed for pressurized water reactors. The first method is a mechanical spectral shift where the moderator-to-fuel volume is changed. The second method is a chemical one in which the D2O/H2O ratio is changed. Utilization of a combination of the two methods has been suggested and analyzed. It was found that the advantage of the combined method is better than the sum of the advantages of the two methods separately. Emphasis was on using the spectral shift controls for one-batch reloads in order to increase the fuel cycle’s length and thus the electricity production. It was found that it is possible to increase electricity production during the plant’s lifetime by ∼6 to 9% compared to three and four batches using a regular control.