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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.
Vishnu B. Subrahmanyam, Dwayne R. Speer
Nuclear Technology | Volume 86 | Number 2 | August 1989 | Pages 207-213
Technical Paper | Decontamination and Decommissioning / Radioactive Waste Management | doi.org/10.13182/NT89-A34272
Articles are hosted by Taylor and Francis Online.
Transuranic waste isotope activity of 0.11 TBq (2.93 Ci) was found in 40 replaceable cartridges of a deep-bed fiberglass filter assembly. An investigation was initiated to provide information required for preparation of safety analyses and decommissioning plans. The filter assembly was suspected to contain 4 TBq (100 Ci) of plutonium, based on ambient neutron flux, confirmed by thermoluminescent dosimeters, and quantified by passive activation of indium foils. However, chemical analyses of smear samples are not consistent with this predicted activity. Americium-241, 244Cm, and isotopes of plutonium are identified by chemical separations and alpha energy analysis of dissolved smears. Isotopic composition based on measured relative alpha activities is used to establish the transuranic content. A major fraction of the observed ambient neutron flux is attributable to 244Cm, a nontransuranic radionuclide.
