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2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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NRC OKs I&C upgrade for Limerick
The Nuclear Regulatory Commission has amended the operating licenses of the two boiling water reactors at Constellation Energy's Limerick Generating Station (now known as Limerick Clean Energy Center), giving the company the green light to replace the units' analog safety-related instrumentation and controls systems with a state-of-the-art digital system.
Y. Hishinuma, T. Tanaka, T. Shinkawa, S. Murakami, K. Matsuda, T. Watanabe, T. Nagasaka, A. Sagara, T. Muroga
Fusion Science and Technology | Volume 66 | Number 1 | July-August 2014 | Pages 221-227
Technical Paper | doi.org/10.13182/FST13-762
Articles are hosted by Taylor and Francis Online.
Erbium oxide (Er2O3) coating layer is one of the suitable coatings to realize an advanced breeding blanket system because it has high electrical resistivity and hydrogen permeation suppression effect. In order to enhance these properties of Er2O3 coating, it is necessary to form a thick coating layer with high crystallinity. The formation of a double stacked coating layer on an austenitic stainless steel 316 substrate using an intermediate layer (buffer layer) was investigated for the thicker and high crystallinity of Er2O3 coating formation. Yttrium oxide (Y2O3) and cerium oxide (CeO2) were selected as buffer layer between the Er2O3 layer and austenitic stainless steel 316 substrate due to their similar lattice constant to that of Er2O3 crystal. The texture and grain growth direction of Er2O3 was controlled by the Y2O3 and CeO2 buffer layer. However, the suppression effect of hydrogen permeation by the double stacked coating was smaller than that of the single layer coating due to the thin Er2O3 formation.
