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Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
Meeting Spotlight
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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Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
El Salvador: Looking to nuclear
In 2022, El Salvador’s leadership decided to expand its modest, mostly hydro- and geothermal-based electricity system, which is supported by expensive imported natural gas and diesel generation. They chose to use advanced nuclear reactors, preferably fueled by thorium-based fuels, to power their civilian efforts. The choice of thorium was made to inform the world that the reactor program was for civilian purposes only, and so they chose a fuel that was plentiful, easy to source and work with, and not a proliferation risk.
Yang Hong Jung, Boung Ok Yoo
Nuclear Technology | Volume 207 | Number 5 | May 2021 | Pages 726-734
Technical Paper | doi.org/10.1080/00295450.2020.1805250
Articles are hosted by Taylor and Francis Online.
Chalk River Unidentified Deposit (CRUD) specimens were sampled and analyzed using an electron probe micro analyzer (EPMA; JEOL JXA-8230R) with a bundle of spent nuclear fuel (actual burnup 49 655 MWd/tonne U) from a Korean nuclear power plant. CRUD collection in the reactor refueling cavity was carried out using the following two methods. The first method used an Al2O3 scraper to scrape a specific area of the fuel cladding and then a paper filter to draw the suspended pieces around it. The second method removed CRUD deposited outside the cladding by vibrating the fuel bundle with an ultrasonic wave. In the first method, scraping some parts of the fuel rods with the Al2O3 scraper made it difficult to obtain an analytical sample because of the very small sample collection. However, the results of the analysis of the identified CRUD samples accurately confirmed the shape and composition of the CRUD in the specific area of the fuel rods desired by the user. In contrast, the second method using the ultrasonic cleaner made it very difficult to analyze samples because of the excessive amount of collected CRUD. In this study, we will discuss two methods for collecting corrosion products existing in the primary cooling system of a pressurized water reactor and the results of an analysis using a shielded EPMA. In addition, we will confirm the value of the Ni/Fe ratio.
