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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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From operator to entrepreneur: David Garcia applies outage management lessons
David Garcia
If ComEd’s Zion plant in northern Illinois hadn’t closed in 1998, David Garcia might still be there, where he got his start in nuclear power as an operator at age 24.
But in his ninth year working there, Zion closed, and Garcia moved on to a series of new roles—including at Wisconsin’s Point Beach plant, the corporate offices of Minnesota’s Xcel Energy, and on the supplier side at PaR Nuclear—into an on-the-job education that he augmented with degrees in business and divinity that he sought later in life.
Garcia started his own company—Waymaker Resource Group—in 2014. Recently, Waymaker has been supporting Holtec’s restart project at the Palisades plant with staffing and analysis. Palisades sits almost exactly due east of the fully decommissioned Zion site on the other side of Lake Michigan and is poised to operate again after what amounts to an extended outage of more than three years. Holtec also plans to build more reactors at the same site.
For Garcia, the takeaway is clear: “This industry is not going away. Nuclear power and the adjacent industries that support nuclear power—and clean energy, period—are going to be needed for decades upon decades.”
In July, Garcia talked with Nuclear News staff writer Susan Gallier about his career and what he has learned about running successful outages and other projects.
T. D. Beynon, I. S. Grant
Nuclear Science and Engineering | Volume 23 | Number 4 | December 1965 | Pages 368-379
Technical Paper | doi.org/10.13182/NSE65-A21074
Articles are hosted by Taylor and Francis Online.
Double P/0 diffusion theory is shown to be a sufficiently accurate representation for calculating resonance absorption and its temperature coefficient. The theory is formulated to allow for non-uniform temperature distributions and spatial variation of neutron cross sections. It is applied to uranium rods in graphite-moderated reactors, assuming a parabolic fuel-temperature distribution. Volume and surface temperature coefficients for absorption are defined. The energy distributions of these coefficients in strongly absorbing resonances are shown to differ Significantly. It is found that the total volume coefficient exceeds the total surface coefficient by 15% at normal operating temperatures. At higher temperatures the total volume coefficient is larger by 5%. Rowlands' formula for the effective uniform temperature is shown to be reliable for calculating the resonance integral and the volume temperature coefficient, but not for the surface coefficient.
