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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.
R. A. Karam, K. D. Dance, T. Nakamura, J. E. Marshall
Nuclear Science and Engineering | Volume 40 | Number 3 | June 1970 | Pages 414-423
Technical Paper | doi.org/10.13182/NSE70-A20193
Articles are hosted by Taylor and Francis Online.
An integral transport method was developed and applied to the calculation of the central reactivity worths of various samples measured in a 2700-liter uranium-carbide fast core and in a 4000-liter UO2 fast core. The method was used to obtain corrections to multigroup first-order perturbation calculations, incorporating self-shielding effects inside and outside the sample, as well as scattering, fission, and edge-effect perturbations. Resonance interaction between a 238U sample and the 238U in the core as well as resonance self-shielding in the sample itself were explicitly considered. A similar treatment was used for 235U samples. ENDF/B data were used in all of the analyses. The calculated central worths of 10B and tantalum were in very good agreement with the measured values, indicating that the calculated value of βeff used to convert percent Δk/k to period measurements was reasonably accurate. The calculated worths of 235U were 5 to 10% greater than the measured values. The discrepancy between the calculated and measured values for 238U was 15 to 20%. The discrepancy for graphite in particular and scatterers in general was rather large, indicating that the distribution of the adjoint function is not adequately calculated.
