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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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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.
Rafael Isayev, Natalia Pukhareva, Evgeniy Malinovskiy, Egor Korenevski, Pavel Dzhumaev
Nuclear Science and Engineering | Volume 199 | Number 4 | April 2025 | Pages 531-549
Review Article | doi.org/10.1080/00295639.2024.2383110
Articles are hosted by Taylor and Francis Online.
The compatibility of structural materials with lead and lead-bismuth eutectic is a significant challenge in the development of fast neutron reactors with heavy-liquid-metal coolants. Liquid-metal corrosion negatively affects ferritic-martensitic steel EP823-Sh. The mechanism of liquid-metal corrosion of steels corresponds to physicochemical dissolution when the oxygen content in lead is less than the equilibrium value. The selective dissolution of steel components from the surface of the claddings is observed. When the oxygen concentration exceeds the equilibrium value, the corrosion products are the outer oxide layer of magnetite and the chromium spinel of nonstoichiometric composition such as Fe(Fe1-x,Crx)2O4, as well as the development of an internal oxidation zone along the grain boundaries, which also can be observed. The pure-lead heat transfer sublayer between the fuel and the cladding causes the dissolution and deposition of steel components on the inner surface of the cladding. To increase corrosion resistance, it is proposed to modify the surface using plasma and laser processing, as well as by applying protective coatings.
