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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
Takeshi Higashijima, Kenjiro Obara, Kiyoshi Shibanuma, Koichi Koizumi, Kazuhiro Kobayashi, Yasuhisa Oya, Wataru Shu, Takumi Hayashi, Masataka Nishi
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 731-735
Decontamination and Waste | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22683
Articles are hosted by Taylor and Francis Online.
Typical materials and elements such as carbon steel, grease lubricant, electric cable and AC servomotor for the ITER remote maintenance equipment were exposed to a tritiated moisture environment to choose the appropriate materials from the viewpoint of tritium contamination / decontamination and to contribute to the structural and maintenance design of the remote maintenance equipment. After the test samples were exposed, the concentrations of tritium adsorbed on the samples were measured and decontamination experiments using gas purges with three different moisture concentrations were performed. It was found that metallic oxidized layer (Fe3O4 coated on S45C, slightly rusted SS400, rusted Cu of electric connector of the AC servomotor) adsorbs larger amount of tritiated moisture. Grease lubricant was highly contaminated in proportion to the exposed surface area of the pasted layer. Cable jacket (cross-linked polyethylene) was also highly contaminated in spite of hydrophobicity. This is probably because the jacket contains the filler “white carbon (SiO2·nH2O)” which adsorbs large amount of moisture. Internal parts of the AC servomotor were contaminated in the same level as the outer surface, because tritiated moisture goes into the inside through the sealing gap between casing and brackets.