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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Maman Kartaman Ajiriyanto, Aslina Br. Ginting, Sungkono, Supardjo, Juan Carlos Sihotang
Nuclear Technology | Volume 211 | Number 5 | May 2025 | Pages 953-962
Research Article | doi.org/10.1080/00295450.2024.2365485
Articles are hosted by Taylor and Francis Online.
Post-irradiation examination (PIE) of a low-enriched-uranium silicide fuel plate, irradiated in the Indonesian Reaktor Serba Guna–Gerrit Augustinus Siwabessy (RSG-GAS) multipurpose reactor, was successfully conducted. The objective of the PIE project was to evaluate the performance and integrity of the fuel under radiation exposure and, furthermore, to explore the potential for increasing the burnup level, enhancing its efficiency and effectiveness. The targeted fuel plate, identified as IDA0045, was extracted from the experimental silicide fuel element RI-SIE2, which had a burnup level of approximately 56% loss of 235U. A scanning electron microscope combined with energy dispersive X-ray spectroscopy microstructural examination and a Vickers microhardness test were conducted for the top, middle, and bottom sections of the fuel. The PIE results indicated minimal occurrence of fuel swelling and good fuel integrity under irradiation, suggesting the possibility of increasing the burnup level.
