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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.
Bernard R. Bandini, Anthony J. Baratta
Nuclear Technology | Volume 87 | Number 4 | December 1989 | Pages 926-931
Technical Paper | TMI-2: Decontamination and Waste Management / Criticality Safety | doi.org/10.13182/NT89-A27686
Articles are hosted by Taylor and Francis Online.
Knowledge of the effective multiplication factor (keff) of variously configured damaged fuel at Three Mile Island Unit 2 (TMI-2) has greatly affected ongoing defueling operations. A recent DOT 4.3 discrete ordinates analysis has extended prior postaccident analyses of keff to “best-estimate”predictions of criticality at several crucial periods during the progression of the accident. Results from the current analysis show that the TMI-2 fuel was most likely in a highly subcritical configuration at all times during the accident. In addition, conservative calculations have shown that during the crucial initial coolant boiloff period of the accident, the conditions necessary for criticality are extremely unlikely.
