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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.
Robert Conn
Nuclear Science and Engineering | Volume 40 | Number 1 | April 1970 | Pages 17-24
Technical Paper | doi.org/10.13182/NSE70-A18876
Articles are hosted by Taylor and Francis Online.
The total one-phonon coherent neutron scattering cross section for graphite is evaluated using an approximate model of the dispersion relations. A relatively simple phonon frequency distribution is derived and multiphonon terms are calculated in the incoherent approximation. The results are compared with experimental and other theoretical calculations based upon the incoherent approximation. The latter have been consistently lower than the experimental results by a factor of two or more. It is found that the out-of-plane or z-mode contributes ∼ 75% of the one-phonon cross section. The value of [υ Σ01 (υ)]min is found to be ∼70% greater than the same quantity obtained with the same model in the incoherent approximation. Moreover, the λ-law or constant collision frequency domain only begins with neutron wavelengths >∼20 Å (the Bragg cutoff is 6.7 Å).
