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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.
Jeffrey W. Ray, Albert B. Reynolds
Nuclear Technology | Volume 91 | Number 3 | September 1990 | Pages 394-403
Technical Paper | Material | doi.org/10.13182/NT90-A34460
Articles are hosted by Taylor and Francis Online.
The effect of various antioxidants and antioxidant concentrations on the room-temperature radiation stability of ethylene propylene diene monomer (EPDM) and cross-linked polyethylene (XLPE) materials used as insulation for electric cable in nuclear power plants is measured. Relative elongation to rupture between aged and unaged material is used as the measure of stability. The materials are irradiated to doses up to 2.0 MGy (200 Mrad) at a dose rate of 300 Gy/h (3 x 104 rad/h) in the Cobalt-60 Gamma Irradiation Facility at the University of Virginia. Several of the antioxidants in EPDM perform well to the maximum doses for which reliable data were obtained of either 1.0 or 1.6 MGy. An XLPE material with Agerite™ MA antioxidant performs well to the maximum dose for which reliable data were obtained of 1.0 MGy. Stabilization at 1.0 MGy increases with increasing antioxidant concentration, though not in proportion to the concentration.
