ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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November 2024
Latest News
Acceleron Fusion raises $24M in seed funding to advance low-temp fusion
Cambridge, Mass.–based fusion startup Acceleron Fusion announced that it has closed a $24 million Series A funding round co-led by Lowercarbon Capital and Collaborative Fund. According to Acceleron, the funding will fuel the company’s efforts to advance its low-temperature muon-catalyzed fusion technology.
Hideyuki Hosokawa, Makoto Nagase, Motomasa Fuse, Yutaka Watanabe
Nuclear Science and Engineering | Volume 175 | Number 2 | October 2013 | Pages 135-148
Technical Paper | doi.org/10.13182/NSE12-80
Articles are hosted by Taylor and Francis Online.
The formation process of a ferrite oxide film (which can effectively suppress radioactive nuclide deposition on piping surfaces) was evaluated from the viewpoints of forming optimum film structures and reducing waste disposal. Both pH and oxidation-reduction potential (ORP) of ferrite film formation solution were found to be important, and the film formation process could be understood on the basis of a Pourbaix diagram of the iron-water system. To make a thin and closely packed oxide film, the pH and ORP values should be maintained within the magnetite stability domain by controlling the hydrazine concentration, which promotes the film formation reactions. Use of chemical solutions such as formic acid and hydrazine was confirmed to get catalyst decomposition into easily handled substances. This film formation process could be evaluated taking into consideration the charge balance and chemical equilibrium equations of each reaction involved in the film formation. It was clarified that preoxidation of the ferrite film under certain oxidizing water chemistry conditions (such as normal water chemistry) in boiling water reactors could further improve the film cobalt deposition suppression performance due to the formation of hematite. Our selected film forming process and waste solution decomposition conditions were confirmed using the simulated flow system apparatus of one-tenth actual plant scale. The method was applied to the actual plant just after the chemical decontamination. After one cycle elapsed, dose rate of the reactor recirculation system piping coated with ferrite film was half that before the ferrite film was formed.