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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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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.
Alex Galperin
Nuclear Technology | Volume 73 | Number 3 | June 1986 | Pages 343-349
Technical Paper | Fuel Cycle | doi.org/10.13182/NT86-A16076
Articles are hosted by Taylor and Francis Online.
A novel concept of thorium once-through fuel cycle for CANDU-type reactors is proposed. The main innovation of the concept is described, including segregation of enriched uranium from thorium to allow separate fuel management routes. Geometry is chosen to enhance leakage of uranium-born neutrons to subcritical thorium parts of the core. Discharged burnup values for thorium and uranium are subjects to optimization regarding uranium savings benefit. Neu-tronic analysis indicated a potential for significant savings in the uranium requirement (∼50%). Fuel cycle cost calculations based on a simple economic model and reasonable set of economic parameters show no economic penalty in realizing fuel utilization improvements.
