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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.
Sandra M. Sloan, Yassin A. Hassan
Nuclear Technology | Volume 89 | Number 2 | February 1990 | Pages 177-182
Technical Paper | Nuclear Safety | doi.org/10.13182/NT90-A34344
Articles are hosted by Taylor and Francis Online.
The results generated from the IBM version of RELAP5/MOD2 are compared with the experimental data of an International Atomic Energy Agency standard problem exercise. The standard problem exercise data were that of a 7.4% break loss-of-coolant accident conducted at a test facility in Hungary. The United States did not formally participate in this exercise, whose aim was to assess the capabilities of computer codes and modeling techniques and in which a total of 17 organizations from 12 countries participated. The results obtained by execution of RELAP5/MOD2 on the IBM-3090 computer for upper plenum pressure, core inlet and outlet coolant temperature, and secondary-side pressure differed slightly during the latter part of the transient, but in general compared favorably to the experimental data. The magnitude of the cold-leg mass flow rate was underpredicted by the code.
