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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.
Gottfried Class, Klaus Hain, Rainer Meyder
Nuclear Technology | Volume 69 | Number 1 | April 1985 | Pages 72-81
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT85-A33596
Articles are hosted by Taylor and Francis Online.
Thermocouples (TCs) spot welded on a surface, in two-phase flow, may rewet much sooner than the surrounding surface; they even may act as promoters for rewetting. In some loss-of-flow-test experiments, such spot-welded TCs are used to measure the cladding surface temperature of the fuel rods. Tests in the controlled blowdown simulation facility Karlsruhe (COSIMA) were performed using fuel rod simulators with and without such TCs. The cladding surface temperatures measured with the COSIMA pyrometers were compared, and it was concluded that the influence of the TCs cannot be neglected.
