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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
Gennadij T. Razdobarin, Gianfranco Federici, Vladimir M. Kozhevin, Eugeny E. Mukhin, Vladimir V. Semenov, Sergey Yu. Tolstyakov
Fusion Science and Technology | Volume 41 | Number 1 | January 2002 | Pages 32-43
Technical Paper | doi.org/10.13182/FST02-A198
Articles are hosted by Taylor and Francis Online.
A technique based on laser-induced breakdown spectroscopy is proposed for detecting in situ dust on the plasma-exposed surfaces and in the grooves of plasma-facing components in the next generation of fusion devices (e.g., ITER). It is based on laser-induced ablation of wall material and spectral analysis of the laser spark flash-light collected by imaging optics and transmitted to the detection system. This could give space- and time-resolved information on the presence of dust or loosely bound films, their characteristic deposition patterns, elemental composition, and possibly their hydrogen content, without the necessity of breaking the machine vacuum. We have performed some simple proof-of-principle experiments to demonstrate the suitability of this technique, which might provide an effective nonintrusive in situ surface analysis method for surveying in-vessel dust accumulation in future fusion devices. The preliminary results are discussed, and some of the inherent advantages and difficulties of this method are highlighted. The usefulness of this technique to provide reliable information on the quantity of dust at the probed location still depends on the resolution of several aspects, which are the subject of ongoing experimental investigation. Areas of further research and development are identified, and some of the design issues to integrate this system in a next-step fusion device such as ITER are briefly discussed.