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Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Michael P. Manahan
Nuclear Technology | Volume 85 | Number 3 | June 1989 | Pages 324-333
Technical Paper | Material | doi.org/10.13182/NT89-A34254
Articles are hosted by Taylor and Francis Online.
Small flakes that consist primarily of magnetite have been discovered on the secondary side of the steam generator of the Three Mile Island Unit 1 plant. These iron oxide flakes are believed to cause significant increases in flow resistance, which in turn causes abnormal increases in steam generator water level. It is necessary to measure the physical properties of the tube scale so that the maximum amount of loose flakes can be generated prior to hydrodynamic cleaning (water slap). It is also important to study the flake properties to shed light on the flake formation and transport mechanisms. Once the physical properties of the tube scale are determined, the effects of hydrodynamic cleaning (water slap) can be optimized by preconditioning the scale. There are several preconditioning options including prewetting, predrying, and thermal cycling of the steam generator tubes. Understanding the physical properties of the scale would also be beneficial in optimizing the water slap technique itself. Elastic modulus, fracture stress, thermal expansion, and swelling of the flakes were measured. With one exception, all of the flakes studied were either one-or two-layered as judged by microstructural variation. The fracture stress of the flake materials tested was in the range of 20.0 to 113.8 MPa (2.9 to 16.5 ksi). There did not appear to be a substantial change in the range of stresses measured at elevated temperatures. There was no evidence of delamination during bend testing. The mean coefficient of linear thermal expansion was a factor of ∼2 larger than that of Fe3O4. The maximum amount of swelling measured was 0.0012%, which is consistent with earlier data on flakes from the Oconee-2 plant.