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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.
Alan M. Winslow
Nuclear Science and Engineering | Volume 32 | Number 1 | April 1968 | Pages 101-110
Technical Paper | doi.org/10.13182/NSE68-A18829
Articles are hosted by Taylor and Francis Online.
A formulation of asymptotic neutron diffusion theory for numerical calculations is presented which provides in simple ways for physical features not included in the elementary form of the theory. These are: 1) exponential time dependence, which is provided for by a transformation to steady state; 2) effect of surface curvature on the linear extrapolation length, provided for by means of the principal radii of curvature; 3) material discontinuities, provided for by limiting the current at an interface to its free surface value; and 4) prescribed sources and velocity dependence, provided for by a generalization of the number of secondary neutrons per collision. Numerical results are presented showing that the form of time-dependent multigroup neutron diffusion theory thus obtained is more accurate than the ordinary multigroup formulation especially for small or inhomogeneous systems.
