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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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!
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The Nuclear Family: Empowering parents and caregivers
The Diversity and Inclusion in ANS Committee is hosting a webinar today to celebrate the contributions of parents in the nuclear industry while fostering diversity and inclusion within the community.
Register now: The webinar, from 1:00-2:00 pm ET, will highlight how the nuclear industry supports caregivers, new parents, and new mothers, and will focus on life transitions and parental responsibilities.
Won S. Park, Yong H. Kim, Chang K. Park, Jong S. Chung, Chang H. Kim
Nuclear Science and Engineering | Volume 143 | Number 2 | February 2003 | Pages 188-201
Technical Paper | doi.org/10.13182/NSE03-A2329
Articles are hosted by Taylor and Francis Online.
A design study for the fission product (FP) target was performed to maximize the transmutation of 99Tc and 129I in the Hybrid Power Extraction Reactor (HYPER) system without causing any core safety concerns. Localized thermal flux is obtained by inserting moderators such as CaH2. Many types of target design concepts have been investigated. The concept where 99Tc is loaded as a plate type in the outermost region and 129I is loaded as NaI rods mixed with CaH2 rods in the inner region is concluded to be the most effective in terms of transmutation rate and core power peaking. The proposed FP target is estimated to have a net transmutation rate of 5.53%/effective full-power year (EFPY) and 11.41%/EFPY for 99Tc and 129I, respectively, which are much higher compared to the transmutation rates in other fast neutron systems. In addition, the support ratios of the HYPER system for 99Tc and 129I are 5.7 and 4.0, respectively, very similar to the support ratio of TRU. The maximum pin power peaking with the loading of the FP target is 1.232, which is within the acceptable range. The loading of the FP target increases the inventory of TRU and makes the core coolant void coefficient more negative but the Doppler coefficient less negative. The proposed FP target configuration causes no safety problems in terms of core neutronics.