ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
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.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Eliseo Visca, Enrico Di Pietro, Giancarlo Ceccotti, Giovanni Mercurio
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 689-693
Divertor Design and Experiments | doi.org/10.13182/FST96-A11963016
Articles are hosted by Taylor and Francis Online.
The design of plasma-facing components for ITER, as for any of the envisaged next-step machines, relies on the use of junctions for coupling the armour materials to the heat sink and cooling tubes. A suitable diffusion bonding process for manufacturing the high heat flux components of ITER have been developed. The process parameters for defining the bonding technology are reported. The dependence of the load applied on the sample, the bonding temperature, dwell time and surface preparation were studied and the results applied in the construction of the mockups. Results of the shear tests performed to define the process parameters for different heat sink materials, such as CuCrZr alloy and DS copper, are reported. The S65 beryllium grade used (supplied by Brush and Wellman) had cubic and castellated finishing to increase its high heat flux resistance. A shear strength of about 150 MPa was obtained by using an interlayer of electrolytic copper deposited on the activated beryllium surface. This electrolytic deposition method gave good results and reproducibility so it was decided to use copper as interlayer in order to obtain a silver-free joint. After selecting the best process, medium-scale mockups of high heat flux components for testing on the electron beam facility were manufactured. The actively cooled mockups had a 50×30×8mm beryllium armour (castellated and non-castellated), with two kinds of heat sink material (Glidcop A125 and CuCrZr alloy). Both the samples produced for the shear tests as well as the mockups have been submitted to ultrasonic inspection to detect bonding defects.