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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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Fusion Science and Technology
Latest News
Argonne to investigate Pu chemistry to aid Hanford cleanup
Researchers at the Department of Energy’s Argonne National Laboratory are investigating the details of plutonium chemistry with the goal of aiding the cleanup of the Hanford Site in Washington state. For more than 40 years, reactors located at Hanford produced plutonium for America’s defense program, resulting in millions of gallons of liquid radioactive and chemical waste.
Kazuyuki Takase, Tomoaki Kunugi
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 645-650
Safety and Environment (Poster Session) | doi.org/10.13182/FST98-A11963687
Articles are hosted by Taylor and Francis Online.
The dust mobilization in the vacuum vessel under the Loss-of-Vacuum-Accident (LOVA) event was measured quantitatively using the preliminary LOVA apparatus. The particle size distributions in the mobilized dust were characterized and analyzed using a high performance optical-microscope and image analysis software. It was found that around 10% of the initial dust weight was transported upward inside the VV when the breach located at the roof of the VV and an incoming flow from the outside through the breach directly hit the dust. On the other hand, the transported dust weight was less than 1% of the initial dust weight when the breach position was at the side wall of the VV and an incoming flow from the outside indirectly hit the dust. The relationship between the dust mobilization and breach position was clarified from the present experimental results.