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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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A webinar, and a new opportunity to take ANS’s CNP Exam
Applications are now open for the fall 2025 testing period for the American Nuclear Society’s Certified Nuclear Professional (CNP) exam. Applications are being accepted through October 14, and only three testing sessions are offered per year, so it is important to apply soon. The test will be administered from November 12 through December 16. To check eligibility and schedule your exam, click here.
In addition, taking place tomorrow (September 19) from 12:00 noon to 1:00 p.m. (CDT), ANS will host a new webinar, “How to Become a Certified Nuclear Professional.” More information is available below in this article.
R. W. Knight, A. E. Richt
Nuclear Technology | Volume 15 | Number 3 | September 1972 | Pages 384-390
Technical Paper | Reactor | doi.org/10.13182/NT72-A16035
Articles are hosted by Taylor and Francis Online.
The irradiation behavior of the High Flux Isotope Reactor (HFIR) control cylinders has been assessed. After 48 000 MWd of irradiation, the nuclear worth of the control cylinder has not changed significantly. The maximum surface oxide buildup was 0.003 to 0.005 in. thick and occurred over the tantalumaluminum dispersion. The hardness of the 6061 aluminum cladding was found to have increased from 45 DPH at the low burnup end of the cylinder to 110 DPH over the tantalumaluminum region which is located ∼5 in. below the area of maximum fastneutron fluence. Extensive metallographic examination revealed no degradation or reaction in either the tantalum aluminum or Eu2O3-Al portions of the cylinder.
