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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
Roger O. Wooton
Nuclear Technology | Volume 87 | Number 1 | August 1989 | Pages 310-325
Technical Paper | TMI-2: Materials Behavior / Nuclear Safety | doi.org/10.13182/NT89-A27659
Articles are hosted by Taylor and Francis Online.
Calculations with the STCP version of MARCH were performed as part of the Three Mile Island Unit 2 (TMI-2) Analysis Exercise. In the light of the present knowledge of what happened at TMI-2, a number of modeling enhancements were found necessary to interpret the accident. These enhancements and the results of calculations are described. The modified version of MARCH reproduced many of the key accident signatures, including the timing of core heatup, reasonable predictions of the core melt and cladding reaction fractions, the primary system pressure, and the hydrogen release to the containment, which eventually produced a burn at 10 h.
