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2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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The transformation of the NRC: 50 years of commissioners
The dust is beginning to settle following the whirlwind of changes at the Nuclear Regulatory Commission over the past year, and 2025 ultimately may be viewed as a transformative year, as well as the year the NRC celebrated its golden anniversary. The 12 months of that milestone year brought more change to the agency in its composition, its mandate, and its relationship to the executive branch than any comparable period in the preceding four decades.
Now at 51 years and counting, the NRC is working with a full commission and issuing new rulemakings to both regulate and support the next round of nuclear deployments. With the turbulence of 2025 still fresh in our minds, Nuclear News decided it was a good time to revisit the professional backgrounds of all 42 NRC commissioners who have served over the agency’s 50-year history to see how the composition of the commission has evolved over time.
Mirco Karl Grosse (KIT), Teun van Duijnhoven (KIT/FONTYS Univ of Applied Sciences), Martin Steinbrueck, Chongchong Tang, Sarfraz Ahmed, Uta Gerhards, Ingo Juergen Markel, Hans Juergen Seifert (KIT)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 590-597
Stacked couples of silicon carbide and Zircaloy-4 discs were annealed for 1 h in nominal inert atmosphere (6N Ar) at temperatures of 1200, 1400, 1500, 1550, 1575 and 1600°C. Strong interactions between silicon carbide and Zircaloy-4 occurred at temperatures of 1500°C and above. The width of the influenced zone exceeds 1 mm at 1550°C. A pronounced layer structure was found consisting of Zr-Si intermetallic compounds with different stoichiometry, the Zr-Sn intermetallic phase Zr2Sn and sub-stoichiometric ZrC1-x. The six different layers formed at temperatures of 1500°C and above contain these phases in diverse concentrations. At temperatures of 1575 and 1600°C, the discs welded together. This paper gives a detailed description of the results of the post-annealing examinations and an analysis of the interaction between the two materials.
