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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
Senate EPW Committee to hold Nieh nomination hearing
Nieh
The Senate Environment and Public Works Committee will hold a nomination hearing Wednesday for Ho Nieh, President Donald Trump’s nominee to serve as commission at the Nuclear Regulatory Commission.
Trump nominated Nieh on July 30 to serve as NRC commissioner the remainder of a term that will expire June 30, 2029, as Nuclear NewsWire previously reported.
Nieh has been vice president of regulatory affairs at Southern Nuclear since 2021, though since June 2024 he has been at the Institute of Nuclear Power Operations as a loaned executive.
A return to the NRC: If confirmed by the Senate, Nieh would be returning to the NRC after three previous stints totaling nearly 20 years.
Wenyu Cheng, Jie Liang, Mingjun Zhang, Fei Wei, Jinglin Li, Xiaochong Xue, Youshi Zeng, Ke Deng, Qin Zhang, Wei Liu
Nuclear Science and Engineering | Volume 197 | Number 7 | July 2023 | Pages 1534-1544
Technical Paper | doi.org/10.1080/00295639.2022.2158020
Articles are hosted by Taylor and Francis Online.
Large amounts of tritium will inevitably be produced during operation from the Thorium Molten Salt Reactor (TMSR) fueled by lithium salt, which is detrimental to the human body. Therefore, it is necessary to evaluate the radiation dose of the generated tritium. The tritium production, emission, and radiation dose of TMSRs were estimated by numerical calculation. According to this study, a 2-MW(thermal) TMSR produces 3.33E+14 Bq·yr−1 of tritium, discharges 2.42E+13 Bq·yr−1 of tritium, and causes 1.06 μSv·yr−1 of radiation dose. A 30-MW(thermal) TMSR produces 5.00E+15 Bq·yr−1 of tritiu.m, discharges 3.62E+14 Bq·yr−1 of tritium, and causes 2.02 μSv·yr−1 of radiation dose. A 2250-MW(thermal) TMSR produces 3.75E+17 Bq·yr−1 of tritium, discharges 2.77E+16 Bq·yr−1 of tritium, and causes 79 μSv·yr−1 of radiation dose. The radiation dose of TMSRs is much less than 1 mSv·yr−1, which is the dose limit for internal recruitment in China. It is determined that TMSRs are safe for humans regarding tritium hazard.
