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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.
G. C. Hanna
Nuclear Science and Engineering | Volume 15 | Number 3 | March 1963 | Pages 325-337
Technical Paper | doi.org/10.13182/NSE63-A26444
Articles are hosted by Taylor and Francis Online.
Skyrme has given a theoretical treatment of the perturbation of the neutron flux in a diffusing medium by an absorbing foil. His theory is re-examined, with particular reference to the modification proposed by Ritchie and Eldridge, and the “edge correction” is evaluated. The accuracy of this modified Skyrme theory is tested by comparison with Dalton and Osborn’s computer calculations for monokinetic neutrons; the agreement is generally better than 1%. This theory is then extended to a Maxwellian neutron spectrum, for which computer calculations are not available, with the result
A is the activity per unit mass of a foil of thickness τ (in units of the absorption mean free path), Ao that of a zero thickness foil, , where t and R are the thickness and radius of the foil. The bars denote averages over the Maxwellian spectrum. The flux-depression parameter g is of the order of R/λtr, but its exact value depends on the velocity dependence of the transport mean free path, and on the thermalization properties of the medium. This formula is used to obtain, from the available measurements of the dependence of A on foil thickness, “experimental” values of g. For both graphite and hydrogenous media they are smaller than expected.
