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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Latest News
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.
A. B. Reynolds, J. L. Kelly, S. T. Kim
Nuclear Technology | Volume 74 | Number 1 | July 1986 | Pages 76-83
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT86-A33820
Articles are hosted by Taylor and Francis Online.
Fractional release rates of relatively low volatility fission products from fuel have been measured at the Sascha facility at Karlsruhe, Federal Republic of Germany, and elsewhere as a function of fuel temperature. A mass transfer model was developed to calculate these release rates. Of six materials (fission products or fission product oxides) analyzed at temperatures from 1800 to 2400°C, favorable comparisons between experiments and theory were obtained for silver, antimony, ruthenium, BaO, and ZrO2, while insufficient experimental data were available for SrO. The favorable comparison for the five materials provides a strong argument that vaporization mass transfer is controlling the release rate for certain low-volatility fission products.
