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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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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Fusion Science and Technology
Latest News
ANS Standards Committee publishes joint ASME/ANS standard for Level 1/large early release frequency PRA
ANSI/ASME/ANS RA-S-1.1-2024, Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Applications, has been published by the American Nuclear Society. The document, which is a joint standard developed with the American Society of Mechanical Engineers by the ANS/ASME Joint Committee on Nuclear Risk Management, received the approval of the American National Standards Institute on February 29, 2024, and was issued on March 15, 2024.
Quanwen Wu, Wenhua Luo, Xiayan Yan, Jingwen Ba, Zhenhua Zheng, Zhiyong Huang, Jinchun Bao, Danling Dai, Daqiao Meng
Fusion Science and Technology | Volume 73 | Number 1 | January 2018 | Pages 50-58
Technical Note | doi.org/10.1080/15361055.2017.1368335
Articles are hosted by Taylor and Francis Online.
Tritium must be strictly defended in tritium systems because of its permeability and radioactivity. Detritiation devices are required in tritium systems, such as the glove box detritiation system, the vent detritiation system, and the air detritiation system in ITER. The method of catalytic oxidation and adsorption is widely used for air detritiation, and metal gas getter is used in glove box detritiation. Here, a Ce-based oxide-loaded honeycomb catalyst is prepared as a multifunctional detritiation catalyst. The properties of the Ce-based oxide and catalyst are characterized by X-ray diffraction, N2-adsorption/desorption (Brunauer-Emmet-Teller method), and H2 temperature programmed reduction. The catalytic performance is tested under both O2-lean and O2-rich atmospheres. Results indicate that the Pt/Ce0.7Zr0.3O2 honeycomb catalyst fully oxidizes H2 at room temperature with high space velocity (3.2 × 104 h−1) when oxygen is sufficient. When oxygen is deficient, H2 is also fully oxidized by the catalyst at 200°C, with the oxygen supplying from the support. A detritiation test using tritium as reactant is also carried out, and the results verify the feasibility for detritiation application. An improved detritiation reactor is designed and built based on the multifunctional catalyst.