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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.
Tatsuhiko Uda, Hajime Iba, Hiroyuki Tsuchiya
Nuclear Technology | Volume 73 | Number 1 | April 1986 | Pages 109-115
Technical Paper | Material | doi.org/10.13182/NT86-A16207
Articles are hosted by Taylor and Francis Online.
Melt refining as a means of uranium decontamination of metallic wastes was examined. Samples of mild steel, contaminated with uranium, were melted by adding SiO2-CaO-Al2O3 ternary system fluxes. Various melting temperatures and times were used, and the uranium concentrations in the resulting ingots were determined. Flux, and hence slag, composition was found to influence the level of decontamination, but melting temperature and time had little effect. Using the most effective flux composition (10 SiO2-50 CaO-40 Al2O3), uranium concentration was lowered from a contamination level of 500 to 0.027 ppm, a value nearly that of the initial steel before contamination. When the ionic character of slag was defined using basicity [the mole ratio of basic oxide (CaO) to acidic oxide (SiO2 + Al2O3)], the optimum decontamination value was found near a basicity of 1.6. The slag anions of silicate or aluminate seemed to affect the uranium decontamination.
