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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.
Richard D. Peters, Urban P. Jenquin, Langdon K. Holton, Jr.
Nuclear Technology | Volume 90 | Number 1 | April 1990 | Pages 78-86
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT90-A34387
Articles are hosted by Taylor and Francis Online.
Measurement and prediction of outside surface exposure rates and measurement of gamma photon spectra from radioactive sources are described. The sources were 30-cm-diam canisters filled with borosilicate glass to a height of ∼100 cm. Each canister contained up to 237 kCi of 137 Cs and 159 kCi of 90Sr. Exposure rates on the outside surfaces ranged from 26 000 to 320 000 R/h, chiefly from decay of 137 Cs. The radiation field around the canisters was modeled using two codes based on point kernel theory (ISOSHLD-II and QAD-CG) and a transport theory code (ANISN). It was found that the point kernel codes overpredicted surface exposure rates for the radioactive canisters by a factor of ∼2. The surface exposure rates calculated by the transport theory code were ∼25% higher than the measurements. Spectral measurements indicate that most exposure is associated with gamma radiation in the 0.1- to 0.5-MeV range.
