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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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!
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Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
Dragonfly, a Pu-fueled drone heading to Titan, gets key NASA approval
Curiosity landed on Mars sporting a radioisotope thermoelectric generator (RTG) in 2012, and a second NASA rover, Perseverance, landed in 2021. Both are still rolling across the red planet in the name of science. Another exploratory craft with a similar plutonium-238–fueled RTG but a very different mission—to fly between multiple test sites on Titan, Saturn’s largest moon—recently got one step closer to deployment.
On April 25, NASA and the Johns Hopkins University Applied Physics Laboratory (APL) announced that the Dragonfly mission to Saturn’s icy moon passed its critical design review. “Passing this mission milestone means that Dragonfly’s mission design, fabrication, integration, and test plans are all approved, and the mission can now turn its attention to the construction of the spacecraft itself,” according to NASA.
J.P. Krasznai, S. Smith, R.E. Massey, L. Rodrigo, P. Agg, J.M. Miller
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 1342-1346
Design, Operation, and Maintenance of Tritium System | Proceedings of the Fifth Topical Meeting on Tritium Technology In Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30598
Articles are hosted by Taylor and Francis Online.
When organic materials are exposed to elemental tritium, the hydrocarbons incorporate the tritium as a result of radiation induced reactions. The use of oil based vacuum pumps in tritium service gives rise to waste oil which contains, in addition to significant amounts of dissolved HT and HTO, a complex mixture of dissolved hydrocarbon species with a wide range of volatilities. The behaviour of these species in the human body is not as well understood, and consequently, reliable dosimetry models only exist for the two most common tritiated species, HT and HTO. A quantitative radio-gas chromatography technique was developed to analyse the head space above waste vacuum pump oils. The technique was then applied at the Darlington Tritium Removal Facility (TRF) to assess the tritium exposure to personnel changing the oil from one of the high tritium cold boxes.
