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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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
May 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
July 2025
Nuclear Technology
June 2025
Fusion Science and Technology
Latest News
High-temperature plumbing and advanced reactors
The use of nuclear fission power and its role in impacting climate change is hotly debated. Fission advocates argue that short-term solutions would involve the rapid deployment of Gen III+ nuclear reactors, like Vogtle-3 and -4, while long-term climate change impact would rely on the creation and implementation of Gen IV reactors, “inherently safe” reactors that use passive laws of physics and chemistry rather than active controls such as valves and pumps to operate safely. While Gen IV reactors vary in many ways, one thing unites nearly all of them: the use of exotic, high-temperature coolants. These fluids, like molten salts and liquid metals, can enable reactor engineers to design much safer nuclear reactors—ultimately because the boiling point of each fluid is extremely high. Fluids that remain liquid over large temperature ranges can provide good heat transfer through many demanding conditions, all with minimal pressurization. Although the most apparent use for these fluids is advanced fission power, they have the potential to be applied to other power generation sources such as fusion, thermal storage, solar, or high-temperature process heat.1–3
Masahiro Saito
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 399-403
Biology | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22619
Articles are hosted by Taylor and Francis Online.
In a series of experiments, the dosimetry of OBT in the mice supplied with THO or OBT directly or indirectly from their mothers was studied. In the offspring mice nursed by mother mice supplied with THO as drinking water, the largest contribution of OBT to the total accumulated dose was found in the brain. The percent contribution of OBT to the total dose distributed between 17 and 42% among various soft tissues. The OBT localization to cell nuclei increases the microscopic dose to cell nuclei by a factor of 3 – 6 in the case of DNA-bound tritium in comparison with the dose estimated from the tissue-averaged tritium concentration. The tritium localization is of less importance in the case of protein-bound tritium. The blood level tritium was found to be useful and convenient for OBT dosimetry in a practical case of radiation protection of humans after acute and chronic intake of tritium. A new technique was developed to isolate mouse red bone marrow from tibia. A model experiment using mice has shown that the dose to red bone marrow in the case of oral THO intake was lower than the dose estimated for the blood pool.
