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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
May 2024
Fusion Science and Technology
Latest News
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
L. Patryl, D. Galeriu, P. Armand
Fusion Science and Technology | Volume 60 | Number 4 | November 2011 | Pages 1228-1231
Environmental and Organically Bound Tritium | Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2) | doi.org/10.13182/FST11-A12652
Articles are hosted by Taylor and Francis Online.
Precipitation scavenging coefficients, such as the HTO washout rate, are often derived from raindrop intensity and average velocity of drop. In this study, several Drop Size Distribution (DSD) functions based on experimental data are compared to calculate HTO concentration, by using Chamberlain equation, then the washout rate. Variability of Gamma, Lognormal and Marshall-Palmer distributions on the rain concentrations and washout rates are estimated. The fall velocities of drops are computed for every DSD with Kessler, Andronache, Seinfield and Loosmore and empirical formula used in the CEA code called CERES which is the CEA reference computational tool for impact assessment. Results show that the HTO concentration in drops and the scavenging coefficient depends very closely on rain characteristics. More than the choice of velocity drop calculations, which represent an uncertainty less than 20%, the choice of the distribution is important and depends on the rain observed. Certain assumptions can lead to uncertainty about a factor 2 to 3 on HTO concentration in rain and on the washout rate.