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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Ho Nieh nominated to the NRC
Nieh
President Trump recently nominated Ho Nieh for the role of commissioner in the Nuclear Regulatory Commission through the remainder of a term that will expire June 30, 2029.
Nieh has been the vice president of regulatory affairs at Southern Nuclear since 2021, though he is currently working as a loaned executive at the Institute of Nuclear Power Operations, where he has been for more than a year.
Nieh’s experience: Nieh started his career at the Knolls Atomic Power Laboratory, where he worked primarily as a nuclear plant engineer and contributed as a civilian instructor in the U.S. Navy’s Nuclear Power Program.
From there, he joined the NRC in 1997 as a project engineer. In more than 19 years of service at the organization, he served in a variety of key leadership roles, including division director of Reactor Projects, division director of Inspection and Regional Support, and director of the Office of Nuclear Reactor Regulation.
Tohru Haga, Sadao Hanazawa, Toshio Kimura
Nuclear Science and Engineering | Volume 69 | Number 2 | February 1979 | Pages 231-244
Technical Paper | doi.org/10.13182/NSE79-A20613
Articles are hosted by Taylor and Francis Online.
The physical behavior of the mockup burnable poison rods, containing 0.5, 1.0, and 2.0 wt% Gd2O3 in natural uranium oxide pellets, has been studied in critical experiments. Specifically, the reactivity effects, thermal-neutron density distributions, and overall temperature coefficient of reactivity were of interest when related to the poison effect. It was shown that the poison reactivity effect did not change greatly when the Gd2O3 content of the fuel pellets was >0.5 wt%. The poison also made the temperature coefficient of reactivity more negative. Some analytical methods are given, and the calculated and experimental results are compared.
