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
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
BWXT announces nuclear manufacturing plant expansion
BWX Technologies announced today plans to expand and add advanced manufacturing equipment to its manufacturing plant in Cambridge, Ontario, Canada.
A $36.3 million USD ($50M CAD) expansion will increase the plant’s size by 25 percent—to 280,000 square feet—and another $21.7 million USD ($30M CAD) will be spent on new equipment to increase and accelerate its output of large nuclear components. The investment will increase capacity and create more than 200 long-term jobs for skilled workers, engineers, and support staff, according to the company.
Kazuya Furuichi, Kazunari Katayama, Hiroyuki Date, Toshiharu Takeishi, Satoshi Fukada
Fusion Science and Technology | Volume 68 | Number 2 | September 2015 | Pages 458-464
Technical Note | Proceedings of TOFE-2014 | doi.org/10.13182/FST14-969
Articles are hosted by Taylor and Francis Online.
In this study, tritiated water was poured in a packed bed of natural soil and subsequently distilled water was poured in the bed to recover tritium retained in the soil at room temperature. From tritium balance, 22.5 % (7.1 MBq) of input tritium (31.5 MBq) was retained in the soil bed. By distilled water purge, 70 % (5 MBq) of retained tritium was recovered but 30% (2.1MBq) was left. To recover residual tritium, the soil was immersed in distilled water for 531 days but the amount of tritium released to distilled water was slight (0.04 MBq). A part of the soil immersed in the water was taken out and heated up to 300°C under humid oxygen atmosphere. Tritium release terminated at about 50 hours. 11 % (0.23 MBq) of retained tritium was released. By heating to 1000°C, the release amount of tritium increased proportionally to the time and additional 4% (0.09 MBq) was released at 5 hours. The desorption rates of tritium in each process was quantified.
Tritium is quite slowly released from the natural soil exposed to tritiated water in water at room temperature. However, a long time heating by 1000°C would be required to try to recover all tritium from the contaminated soil positively, although tritium recovery was not completed in this work.