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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.
H. L. Garabedian and R. E. Lynch
Nuclear Science and Engineering | Volume 21 | Number 4 | April 1965 | Pages 550-564
Technical Paper | doi.org/10.13182/NSE65-A18799
Articles are hosted by Taylor and Francis Online.
This study is concerned with two-group reactor kinetics in a multi region reactor for problems which involve time-dependent coefficients and nonlinear terms. The method of solution described can be used in problems in which the cross sections are given as linear combinations of powers of the fluxes or as powers of the integrated fluxes. Numerical integration schemes are suggested to solve this class of problems. Included in the possible inherent shutdown mechanisms of a reactor is the Doppler broadening of absorption resonances. It is this particular phenomenon that is used in a Model Problem to illustrate techniques that may be used to solve a much wider class of problems. The Model Problem is based on two-group diffusion theory, with one group of delayed neutrons, in a multi region slab reactor. The results obtained are readily extensible to cylindrical and spherical geometries in one space variable.
