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Conference Spotlight
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.
A. M. Shahub, M. M. R. Williams
Nuclear Technology | Volume 86 | Number 1 | July 1989 | Pages 80-86
Technical Note | Nuclear Safety | doi.org/10.13182/NT89-A34286
Articles are hosted by Taylor and Francis Online.
The importance of Brownian and gravitational collision efficiencies in aerosol coagulation is examined through results from the AEROSIM computer code, which models the behavior of nuclear aerosol particles in a closed volume. Viscous, retarded London van der Waals and electrostatic forces are included in the NACE computer program for the calculation of collision efficiency. Results reveal that the minimum ratios of particle concentration with and without calculated collision efficiencies are 0.51 for Brownian coagulation plus sedimentation, 0.01 for gravitational coagulation plus sedimentation, and 0.08 when all the mechanisms are included.
